WO2015058490A1

WO2015058490A1 - Method and apparatus for forwarding packet

Info

Publication number: WO2015058490A1
Application number: PCT/CN2014/074126
Authority: WO
Inventors: 姜恩龙; 吴建芳; 翟春莹
Original assignee: 华为技术有限公司
Priority date: 2013-10-25
Filing date: 2014-03-26
Publication date: 2015-04-30
Also published as: CN103561007A; CN103561007B

Abstract

The present invention relates to the technical field of the Internet, and provided are a method and apparatus for forwarding a packet. The method comprises: receiving a packet sent by the network layer, and judging whether the packet is the first package of a packet flow; when the packet is the first package of the packet flow, forwarding the packet to the application layer; when the packet is not the first package of the packet flow, judging whether the packet is the first package of a message in the packet flow; when the packet is the first package of the message in the packet flow, forwarding the packet to the application layer; and when the packet is not the first package of the message in the packet flow, forwarding the packet to the network layer. By means of the present invention, whether each packet in a packet flow is the first package of a message in the packet flow can be judged, and if yes, it is submitted to the application layer for resolution; and if not, each packet is forwarded to a network directly. Forwarding a large number of packets that are not required to be resolved to a network can not only improve the efficiency of forwarding a packet, but also can reduce the burden of the application layer resolving the packet.

Description

A method for message forwarding 3⁄41⁄4 setting

The present invention relates to the field of Internet technologies, and in particular, to a packet forwarding method and apparatus. Background technique

With the continuous development of the Internet, the fine management of network traffic has been increasingly applied. Message recognition, flow control, and data statistics are common. When the operator wants to know the usage of the service, the application of the hotspot, and the distribution of the user, in order to expand the targeted value-added services, the data needs to be parsed to obtain detailed data in the packet network. However, in the current situation, when doing data parsing, the application layer usually parses the packet containing the first row and the header field. However, in the process of processing the packet, the application layer encounters many without including the first row and the header. The packets of the domain are used to reduce the efficiency of the application layer to parse packets and forward packets.

Faced with this problem, it is especially important to eliminate packets that do not need to be parsed in the message stream. In the prior art, a method for removing a packet that does not need to be parsed in a packet flow is as follows: The transport layer transmits all the packets in the packet flow to the application layer, and when the application layer receives the packet that does not need to be parsed, According to the state of the internal record of the packet, the packet skipping action is performed, the packet is forwarded to the network, and then the next packet is parsed.

As shown in the above solution, the application layer needs to judge and analyze each packet in the packet flow, which not only reduces the parsing efficiency of the application layer, but also reduces the efficiency of packet forwarding. Summary of the invention

The embodiment of the invention provides a method and a device for forwarding a packet, which can not only improve the efficiency of forwarding packets, but also reduce the burden of parsing packets by the application layer.

A first aspect of the embodiments of the present invention discloses a packet forwarding method, and the method includes: receiving a packet sent by a network layer, determining whether the packet is a first packet of a packet flow; When the packet is the first packet of the packet, the packet is forwarded to the application layer; when the packet is not the first packet of the packet, the packet is determined to be the first packet of the packet in the packet flow; When the packet is the first packet of the message in the packet flow, the packet is forwarded to the application layer; when the packet is not the first packet of the packet in the packet flow, the packet is forwarded to the network layer.

With reference to the first aspect, in a first implementation manner of the first aspect, the determining, by the packet, whether the packet is the first packet of the message in the packet flow includes:

Obtaining a length of a first message body carried by the packet; acquiring a first message of the stored message The total length of the second message body; the total length of the third message body of the transmitted portion of the message to which the message belongs is obtained; the sum of the total length of the third message body and the length of the first message body is greater than the second Determining, in the total length of the message body, the packet is a first packet of the message in the packet flow; and the sum of the total length of the third message body and the length of the first message body is less than or equal to the total of the second message body When the length is determined, it is determined that the message is not the first packet of the message in the stream.

With the first implementation of the first aspect, in the second implementation manner of the first aspect, when the packet is the first packet of the message in the packet flow, after forwarding the packet to the application layer, Also includes:

Receiving a length of a message header in the packet sent by the application layer, adding a length of the first message body to a total length of the third message body, and subtracting a total length of the second message body, and then subtracting The length of the message header in the packet is the total length of the fifth message body;

Updating the total length of the third message body to the total length of the fifth message body.

With the first implementation of the first aspect or the second implementation of the first aspect, in a third implementation manner of the first aspect, after the forwarding the packet to the application layer, the method further includes:

Receiving a total length of the sixth message body sent by the application layer, and updating the total length of the second message body by using the total length of the sixth message body, where the total length of the sixth message body indicates a message of the message to which the message belongs Total length of the body.

With reference to the first implementation manner of the first aspect or the second implementation manner of the first aspect, or the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect, the third message body When the sum of the total length and the length of the first message body is less than or equal to the total length of the second message body, the method further includes:

The stored total length of the third message body is updated to be the sum of the total length of the third message body and the length of the first message body.

In combination with the first implementation of the first aspect or the second implementation of the first aspect or the third implementation of the first aspect or the fourth implementation of the first aspect, in a fifth implementation manner of the first aspect The obtaining the length of the first message body carried by the packet includes:

Receiving a total length of the packet sent by the network layer and a network layer header length of the packet; and acquiring a transport layer header length of the packet;

The length of the network layer header of the packet is subtracted from the total length of the packet, and the length of the transport layer header of the packet is subtracted to obtain the length of the first message body carried by the packet.

In combination with the first implementation of the first aspect or the second implementation of the first aspect or the third implementation of the first aspect or the fourth implementation of the first aspect, the sixth implementation manner in the first aspect The obtaining the length of the first message body carried by the packet includes:

Obtaining the total length of the message;

Obtaining a transport layer header length of the packet;

The length of the first message body carried by the packet is obtained by subtracting the length of the transport layer header of the packet by using the total length of the packet.

The first aspect or the first implementation of the first aspect or the second implementation of the first aspect or the third implementation of the first aspect or the fourth implementation of the first aspect or the fifth implementation of the first aspect The implementation manner or the sixth implementation manner of the first aspect, in the seventh implementation manner of the first aspect, the determining whether the packet is the first packet of the packet flow includes:

Determining whether the quintuple of the packet has been stored. If the quintuple of the packet is not stored, the packet is the first packet of the packet stream.

With the seventh implementation of the first aspect, in the eighth implementation manner of the first aspect, when the packet is the first packet of the packet flow, the method further includes:

The quintuple of the message is stored.

A second aspect of the embodiments of the present invention discloses a packet forwarding apparatus, where the apparatus includes: a receiving unit, configured to receive a packet sent by a network layer; and a determining unit, configured to determine, by the receiving unit, a packet received by the receiving unit Whether the text is the first packet of the packet flow; when determining that the packet is not the first packet of the packet flow, determining whether the packet is the first packet of the message in the packet flow; and the forwarding unit is determined by the determining unit When the packet is the first packet of the packet, the packet is forwarded to the application layer; when the determining unit determines that the packet is the first packet of the message in the packet, the packet is forwarded to the application layer. And when the determining unit determines that the packet is not the first packet of the message in the packet flow, forwarding the packet to the network layer.

With reference to the second aspect, in a first implementation manner of the second aspect, the method further includes an acquiring unit, where the acquiring unit is configured to obtain a length of the first message body carried by the packet, and obtain the stored message of the packet The total length of the second message body; obtaining the total length of the third message body of the transmitted portion of the message to which the message belongs;

The determining unit is specifically configured to:

Determining that the packet is a packet when the sum of the length of the first message body acquired by the acquiring unit and the total length of the third message body acquired by the acquiring unit is greater than the total length of the second message body acquired by the acquiring unit The first packet of the message in the stream;

Determining that the packet is not a report when the sum of the length of the first message body acquired by the acquiring unit and the total length of the third message body acquired by the acquiring unit is less than or equal to the total length of the second message body acquired by the acquiring unit. The first packet of the message in the stream.

With reference to the first implementation of the second aspect, in a second implementation manner of the second aspect, the computing unit and the first updating unit are further included.

When the determining unit determines that the packet is the first packet of the message in the packet flow, after the forwarding unit forwards the packet to the application layer,

The receiving unit is further configured to receive a length of a message header in the packet sent by the application layer, where the calculating unit is configured to use the total length of the first message body acquired by the acquiring unit, and the obtained by the acquiring unit a third message body length, further subtracting a total length of the second message body obtained by the acquiring unit, and subtracting a length of the message header in the message received by the receiving unit to obtain a total length of the fifth message body; An update unit is configured to update the total length of the third message body to the total length of the fifth message body calculated by the calculation unit.

With reference to the first implementation manner of the second aspect or the second implementation manner of the second aspect, in a third implementation manner of the second aspect, the second update unit is further included, and the total length of the sixth message body sent by the layer The total length of the sixth message body indicates the total length of the message body of the message to which the message belongs;

The second update unit is configured to update the total length of the second message body to a total length of the sixth message body received by the receiving unit.

With reference to the first implementation manner of the second aspect, or the second implementation manner of the second aspect, or the third implementation manner of the second aspect, in a fourth implementation manner of the second aspect, When the determining unit determines that the sum of the length of the first message body acquired by the acquiring unit and the total length of the third message body acquired by the acquiring unit is less than or equal to the total length of the second message body acquired by the acquiring unit,

The third update unit is configured to update the total length of the third message body to a sum of a total length of the third message body and a length of the first message body.

In combination with the first implementation of the second aspect or the second implementation of the second aspect or the third implementation of the second aspect or the fourth implementation of the second aspect, the fifth implementation in the second aspect In the way,

The receiving unit is further configured to receive a total length of the packet sent by the network layer and a network layer header length of the packet;

The obtaining unit is further configured to: acquire a transport layer header length of the packet; receive by using a receiving unit The length is the length of the first message body carried by the packet.

With reference to the first implementation of the second aspect or the second implementation of the second aspect or the third implementation of the second aspect or the fourth implementation of the second aspect, the sixth implementation in the second aspect In the mode, the obtaining unit is further configured to:

Obtaining a total length of the packet; obtaining a transport layer header length of the packet; and using the total length of the packet minus the length of the transport layer header of the packet to obtain the first packet carrying The length of the message body.

The second aspect or the first implementation of the second aspect or the second implementation of the second aspect or the third implementation of the second aspect or the fourth implementation of the second aspect or the second aspect In a fifth implementation manner, in a seventh implementation manner of the second aspect, the determining, by the determining unit, whether the packet is the first packet of the packet flow, includes: if not, the packet is a packet flow First package.

With reference to the seventh implementation manner of the second aspect, in an eighth implementation manner of the second aspect, the method further includes: when the packet is the first packet of the packet flow,

The storage unit stores the quintuple of the message.

It can be seen from the foregoing technical solutions provided by the embodiments of the present invention that, by using the packet forwarding method and apparatus provided by the embodiments of the present invention, it can be determined whether each packet in the packet flow is the first packet of the message in the packet flow. If it is the first packet of the message, it is submitted to the application layer for parsing; if it is not the first packet of the message, it is directly forwarded to the network. Since there are fewer first packets and more packets than the first packet, there will be a large number of packets that do not need to be parsed. Direct forwarding to the network not only improves the efficiency of forwarding packets, but also reduces the burden on the application layer to parse packets.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described. It is obvious that the drawings in the following description are only some embodiments of the present invention. It will be apparent to those skilled in the art that other drawings may be obtained from these drawings without the inventive labor.

FIG. 1 is a flowchart of a method for accelerating application layer parsing according to an embodiment of the present invention;

FIG. 2 is a flowchart of a method for accelerating application layer parsing according to another embodiment of the present invention; FIG. 3 is a flowchart of a method for accelerating application layer parsing according to another embodiment of the present invention; FIG. A device structure diagram for accelerating application layer analysis; FIG. 5 is a structural diagram of an apparatus for accelerating application layer parsing according to another embodiment of the present invention; FIG. 6 is a structural diagram of an apparatus for accelerating application layer parsing according to another embodiment of the present invention;

FIG. 7 is a structural diagram of an apparatus for accelerating application layer parsing according to another embodiment of the present invention; FIG.

FIG. 8 is a structural diagram of an apparatus for accelerating application layer parsing according to another embodiment of the present invention; FIG.

FIG. 9 is a structural diagram of an apparatus for accelerating application layer parsing according to another embodiment of the present invention.

detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

A method for packet forwarding according to an embodiment of the present invention is described below with reference to FIG. 1, which describes that each packet in a packet stream is determined to be forwarded to an application layer or forwarded to a network. Specifically include:

101. Receive a packet sent by the network layer, and determine whether the packet is the first packet of the packet flow.

Receiving a packet sent by the network layer, determining whether the quintuple of the packet has been stored, and if the quintuple of the packet is not stored, the packet is the first packet of the packet flow; if the packet is If the quintuple has been stored, the message is not the first packet of the message stream. The quintuple of the message includes an IP (Internet Protocol) address, a source port, a destination IP address, a destination port, and a transport layer protocol number.

The packet stream includes at least one message, and one message can be carried by at least one message. The first packet of the packet flow is the first packet of the packet flow and the first packet of the message.

102. When the packet is the first packet of the packet flow, forward the packet to the application layer.

When the packet is the first packet of the packet, the first packet includes the header of the message to which the packet belongs, and the packet needs to be forwarded to the application layer, and the application layer parses the header of the message to which the packet belongs. In order to obtain the required information, common information such as user distribution, hot application and business usage. The message header of the message may include a first line and a header field, and may also include a first line, or may include a header field.

When the packet is the first packet of the packet flow, the quintuple of the packet needs to be stored. When receiving the subsequent packet of the packet flow, it may determine that the subsequent packet is not the first packet of the packet flow according to the stored quintuple of the packet.

103. When the packet is not the first packet of the packet flow, determine whether the packet is the first packet of the message in the packet flow. When the packet is not the first packet of the packet flow, the packet needs to be further judged to determine whether the packet is the first packet of the message in the packet flow. The specific method for determining whether the packet is the first packet of the packet in the packet flow is: obtaining the length of the first message body carried by the packet; and obtaining the stored second message body of the message The total length, the message is a message that has transmitted part of the content to the application layer; the total length of the third message body of the stored part of the message to which the message belongs is obtained; the total length of the third message body and the When the sum of the lengths of the first message body is greater than the total length of the second message body, determining that the message is the first packet of the message in the packet flow; and the sum of the total length of the third message body and the length of the first message body is less than or When it is equal to the total length of the second message body, it is determined that the message is not the first packet of the message in the message stream.

Get the length of the first message body carried by the packet. The total length of the packet sent by the network layer and the network layer header length of the packet are obtained; the length of the transport layer header of the packet is obtained; and the network layer of the packet is subtracted from the total length of the packet. The length of the header, and then the length of the transport layer header of the packet is subtracted to obtain the length of the first message body carried by the packet.

Get the length of the first message body carried by the packet. The length of the packet in the transport layer and the length of the packet transport layer header are obtained, and the length of the transport layer header of the packet is subtracted from the total length of the packet to obtain the length of the first message body carried by the packet.

Since a message is carried by at least one message, and the message in the message stream is continuous, one message may contain the content of one message, which may contain the contents of two messages.

The total length of the second message body of the stored message is obtained, and the message is a message that has transmitted part of the content to the application layer. The total length of the second message body refers to the total length of the message to which the message belongs. If the message is carried by multiple messages, the sum of the message lengths carried by the multiple messages is the total length of the message. If the message carries the contents of the two messages, the message in the total length of the second message body that obtains the stored message refers to the message that the existing part of the content is transmitted to the application layer, and the total length has been stored. .

Obtain the total length of the third message body of the message to which the stored message stream has been transmitted to the application layer. The message content needs to be divided into several pieces of messages for transmission. Before the message, the other messages belonging to the message have already transmitted a part of the message content to the application layer. The length of the part of the message content is the total length of the third message body.

104. When the packet is the first packet of the message in the packet flow, forward the packet to the application layer.

When the packet is the first packet of the message in the packet flow, the packet needs to be forwarded to the application layer because the packet includes the header of the message to which the packet belongs, and the application layer performs the message header of the message to which the packet belongs. Analysis, In order to obtain the required information, common information such as user distribution, hot application and business usage.

105. When the packet is not the first packet of the message in the packet flow, the packet is forwarded to the network layer.

When the packet is not the first packet of the packet in the packet flow, the packet does not include the header of the message to which the packet belongs, so the packet does not need to be parsed, and the packet can be forwarded to the network layer. Improve forwarding efficiency and reduce the analytical burden of the application layer.

It can be seen from the above that the packet forwarding method provided by the embodiment of the present invention can determine whether each packet in the packet flow is the first packet of the message in the packet flow, and if it is the first packet of the message, submit the application layer for parsing. If it is not the first packet of the message, it is directly forwarded to the network. Since there are fewer first packets and more packets than the first packet, forwarding a large number of packets that do not need to be parsed directly to the network can improve the forwarding of packets. Efficiency can also reduce the burden on the application layer to parse messages.

Another method for packet forwarding according to an embodiment of the present invention is described in FIG.

201. Receive a packet sent by the network layer, and determine whether the packet is the first packet of the packet flow.

Receiving a packet sent by the network layer, determining whether the quintuple of the packet has been stored, and if the quintuple of the packet is not stored, the packet is the first packet of the packet flow; if the packet is If the quintuple has been stored, the message is not the first packet of the message stream. The quintuple of the packet includes a source IP address, a source port, a destination IP address, a destination port, and a transport layer protocol number.

202. When the packet is the first packet of the packet flow, forward the packet to the application layer, and store the quintuple of the packet.

203. When the packet is not the first packet of the packet flow, determine whether the packet is the first packet of the message in the packet flow. If the packet is not the first packet of the message in the packet flow, go to 204, if the packet Text is the message in the message stream First package, turn to 205.

When the packet is not the first packet of the packet flow, the packet needs to be further judged to determine whether the packet is the first packet of the message in the packet flow. The specific method for determining whether the packet is the first packet of the message in the packet flow is: obtaining the length of the first message body carried by the packet; and obtaining the stored second message of the message The total length of the third message body of the transmitted portion of the message to which the message belongs is obtained; when the sum of the total length of the third message body and the length of the first message body is greater than the total length of the second message body, The packet is the first packet of the message in the packet flow. When the sum of the total length of the third message body and the length of the first message body is less than or equal to the total length of the second message body, the packet is not in the packet stream. The first package of the message.

Get the length of the first message body carried by the packet. The total length of the packet sent by the network layer and the network layer header length of the packet are obtained; the length of the transport layer header of the packet is obtained; and the network layer of the packet is subtracted from the total length of the packet. The length of the transport layer header of the packet is further subtracted from the length of the header to obtain the length of the first message body carried by the packet.

204. When the packet is not the first packet of the message in the packet flow, forward the packet to the network layer.

When the packet is not the first packet of the message in the packet flow, the packet does not contain the first row and the header field of the message, so it does not need to be parsed and can be directly forwarded to the network layer. 205. When the packet is the first packet of the message in the packet flow, forward the packet to the application layer, and switch to 206. When the packet is the first packet of the message in the packet flow, the packet needs to be forwarded to the application layer because the packet includes the header of the message to which the packet belongs, and the application layer performs the message header of the message to which the packet belongs. Parsing, in order to obtain the required information, common information such as user distribution, hot application and business usage.

As the packet is the first packet of the packet, the quintuple of the packet needs to be stored to provide a basis for determining whether the subsequent packet is the first packet of the packet.

206. Receive a length of a message header in the packet sent by the application layer, add a length of the first message body, a total length of the third message body, a total length of the second message body, and subtract the message in the packet. The length of the header gets the total length of the fifth message body.

Using the length of the first message body plus the total length of the third message body minus the total length of the second message body is obtained by using the message length of other messages carried by the message, and then the length of the message header of the other message is obtained. The total length of the fifth message body carried by the message.

207. Update the total length of the third message body to the total length of the fifth message body.

Since the message contains the contents of other messages, indicating that one message ends, another message begins. The packet carries the content of the two messages. Therefore, the length of the transmitted message body needs to be updated, and the total length of the transmitted third message body is updated by using the packet to carry the total length of the fifth message body. The judgment of subsequent messages of other messages provides a basis.

208. Receive a total length of the sixth message body sent by the application layer, and update the total length of the second message body by using the total length of the sixth message body. The total length of the sixth message body indicates the total message body of the message to which the message belongs. length.

Receiving a total length of the sixth message body sent by the application layer, and updating the total length of the second message body by using the total length of the sixth message body. The total length of the sixth message body is obtained by the application layer by parsing the message content length field of the message, and the message includes the content of two messages, and is obtained by parsing the message content length field included in the message. Is the content of one of the messages. Updating the total length of the second message body by using the total length of the sixth message body includes replacing or covering the total length of the second message body with the total length of the sixth message body, so that the next time the total length of the second message body is obtained, Is the total length of the second message body that has been updated.

It can be seen from the above that the packet forwarding method provided by the embodiment of the present invention can determine whether each packet in the packet flow is the first packet of the message in the packet flow, and if it is the first packet of the message, submit the application layer for parsing. If it is not the first packet of the message, it will be forwarded directly to the network, because the first packet is less, the non-first packet There are many texts. The large number of packets that do not need to be parsed can be directly forwarded to the network. This improves the efficiency of forwarding packets and reduces the burden of parsing packets at the application layer.

FIG. 3 illustrates another method for packet forwarding according to an embodiment of the present invention.

301. Receive a packet sent by the network layer, and determine whether the packet is the first packet of the packet flow.

302. When the packet is the first packet of the packet flow, forward the packet to the application layer, and store the quintuple of the packet.

303. When the packet is not the first packet of the packet flow, determine whether the packet is the first packet of the message in the packet flow. If the packet is not the first packet of the message in the packet flow, go to 304, if the packet The text is the first packet of the message in the message stream, and it turns to 305.

When the packet is not the first packet of the packet flow, the packet needs to be further judged to determine whether the packet is the first packet of the message in the packet flow. The specific method for determining whether the packet is the first packet of the message in the packet flow is: obtaining the length of the first message body carried by the packet; and obtaining the stored second message of the message The total length of the third message body of the transmitted portion of the message to which the message belongs is obtained; when the sum of the total length of the third message body and the length of the first message body is greater than the total length of the second message body, The packet is the first packet of the message in the packet flow. When the sum of the total length of the third message body and the length of the first message body is less than or equal to the total length of the second message body, the packet is not in the packet stream. The first package of the message. Get the length of the first message body carried by the packet. The total length of the packet sent by the network layer and the network layer header length of the packet are obtained; the length of the transport layer header of the packet is obtained; and the network layer of the packet is subtracted from the total length of the packet. The length of the transport layer header of the packet is further subtracted from the length of the header to obtain the length of the first message body carried by the packet.

304. When the packet is not the first packet of the message in the packet flow, forward the packet to the network layer, and go to 309. When the packet is not the first packet of the message in the packet flow, the packet does not contain the first row and the header field of the message, so it does not need to be parsed and can be directly forwarded to the network layer.

305. When the packet is the first packet of the message in the packet flow, forward the packet to the application layer and transfer the packet to 306. When the packet is the first packet of the message in the packet flow, the packet needs to be forwarded to the application layer because the packet includes the header of the message to which the packet belongs, and the application layer performs the message header of the message to which the packet belongs. Parsing, in order to obtain the required information, common information such as user distribution, hot application and business usage.

306. Receive a length of a message header in the packet sent by the application layer, add a length of the first message body, a total length of the third message body, a total length of the second message body, and subtract the message in the packet. Head length The total length of the fifth message body is obtained.

307. Update the total length of the third message body to the total length of the fifth message body.

308. Receive a total length of the sixth message body sent by the application layer, and update the total length of the second message body by using the total length of the sixth message body. The total length of the sixth message body indicates the total message body of the message to which the message belongs. length.

309. Update the total length of the third message body to the sum of the total length of the third message body and the length of the first message body.

Since the content of the message carried by the message completely belongs to a message, and the content carried by the message belongs to the content of the message to which the message belongs, the total length of the stored third message body needs to be updated. Adding a message body length carried by the message to the stored total length of the message body of the message to which the message belongs, and updating the stored message stream with the added sum to transmit the partial content to the application layer The total length of the message body of the message to which the message belongs is used to provide a judgment basis for subsequent messages of the message to which the message belongs.

It can be seen that, by using the packet forwarding method and device provided by the embodiment of the present invention, it can be determined whether each packet in the packet flow is the first packet of the message in the packet flow, and if it is the first packet of the message, the application layer is submitted. If the first packet of the message is not forwarded, it will be directly forwarded to the network. Since there are fewer first packets and more packets than the first packet, a large number of packets that do not need to be parsed are directly forwarded to the network. The efficiency of the text can also reduce the burden on the application layer to parse the message. A device 40 for packet forwarding according to an embodiment of the present invention is described below with reference to FIG. As shown in FIG. 4, the device 40 includes:

The receiving unit 401, the determining unit 402, and the forwarding unit 403.

The receiving unit 401 is configured to receive a packet sent by the network layer.

The determining unit 402 is configured to determine whether the packet received by the receiving unit 401 is the first packet of the packet flow; when the packet is not the first packet of the packet flow, determine whether the packet is a message in the packet flow. First package.

The determining unit 402 determines whether the quintuple of the packet has been stored. If the quintuple of the packet is not stored, the packet is the first packet of the packet stream; if the quintuple of the packet has been If it is stored, the packet is not the first packet of the packet stream. The quintuple of the packet includes a source IP address, a source port, a destination IP address, a destination port, and a transport layer protocol number.

When the determining unit 402 determines that the packet is not the first packet of the packet flow, the packet needs to be further judged to determine whether the packet is the first packet of the message in the packet flow.

The determining unit 402 further determines the packet, so as to determine whether the packet is the first packet of the message in the packet flow, the method is: obtaining the length of the first message body carried by the packet; and acquiring the stored message The total length of the second message body; the total length of the third message body of the transmitted part of the message to which the message belongs is obtained; the sum of the total length of the third message body and the length of the first message body is greater than the total length of the second message body The length of the message is determined to be the first packet of the message in the packet flow. When the sum of the total length of the third message body and the length of the first message body is less than or equal to the total length of the second message body, the message is determined. Not the first packet of the message in the message stream.

The forwarding unit 403, when the determining unit 402 determines that the packet is the first packet of the packet flow, forwards the packet to the application layer; when the determining unit 402 determines that the packet is the first packet of the message in the packet flow, the application unit The layer forwards the packet, and when the determining unit 402 determines that the packet is not the first packet of the message in the packet stream, the packet is forwarded to the network.

When the determining unit 402 determines that the packet is the first packet of the packet flow or the first packet of the message in the packet flow, since the packet includes the message header of the message to which the packet belongs, the application layer needs the message header of the message. The parsing is performed, so the forwarding unit 403 forwards the message to the application layer. The message header of the message may include a first line and a header field, and may also include a first line, and may also include a header field.

When the determining unit 403 determines that the packet is not the first packet of the message in the packet stream, the packet does not include the packet. The message header of the message belongs to the message. Therefore, the packet does not need to be parsed, and the forwarding unit 403 forwards the packet to the network layer, thereby improving forwarding efficiency and reducing the analysis burden of the application layer.

It can be seen from the above that the device for forwarding a packet according to the embodiment of the present invention can determine whether each packet in the packet flow is the first packet of the message in the packet flow, and if it is the first packet of the message, submit the application layer for parsing. If it is not the first packet of the message, it is directly forwarded to the network. Since there are fewer first packets and more packets than the first packet, forwarding a large number of packets that do not need to be parsed directly to the network can improve the forwarding of packets. Efficiency can also reduce the burden on the application layer to parse messages.

Another apparatus 50 for message forwarding according to an embodiment of the present invention will be described below with reference to FIG. As shown in Figure 5, device 50 includes:

The receiving unit 501, the determining unit 502, the storing unit 503, the obtaining unit 504, the forwarding unit 505, the calculating unit 506, the first updating unit 507, and the second updating unit 508.

The receiving unit 501 is configured to receive a packet sent by the network layer.

The determining unit 502 is configured to determine whether the packet received by the receiving unit 501 is the first packet of the packet flow, and when the packet is not the first packet of the packet flow, determine whether the packet is a message in the packet flow. The first pack.

The determining unit 502 determines whether the quintuple of the packet has been stored. If the quintuple of the packet is not stored, the packet is the first packet of the packet stream; if the quintuple of the packet has been If it is stored, the packet is not the first packet of the packet stream. The quintuple of the packet includes a source IP address, a source port, a destination IP address, a destination port, and a transport layer protocol number.

When the determining unit 502 determines that the packet is not the first packet of the packet flow, the packet needs to be further judged to determine whether the packet is the first packet of the message in the packet flow.

The storage unit 503, when the determining unit 502 determines that the message is the first packet of the message stream, stores the quintuple of the message.

The obtaining unit 504, when the determining unit 502 determines whether the packet is the first packet of the message in the packet flow, obtains the length of the first message body carried by the packet; and obtains the total length of the second message body of the stored message; The stored total length of the transmitted portion of the message to which the message belongs to the third message body of the application layer.

The obtaining unit 504 obtains the first message body length carried by the packet. The receiving unit 501 is further configured to receive the total length of the packet sent by the network layer and the network layer header length of the packet. The obtaining unit 504 obtains the transport layer header length of the packet, and receives the length of the transport layer header by using the receiving unit 501. The total length of the packet is subtracted from the network layer header length of the packet, and the length of the transport layer header of the packet is subtracted to obtain the packet carrying the packet. The length of a message body.

The obtaining unit 504 obtains the length of the first message body carried by the packet. The total length of the packet that has been sent to the transport layer and the length of the packet transport layer header are obtained, and the total length of the packet is subtracted from the total length of the transport layer header of the packet to obtain the first packet carrying the packet. The length of the message body.

Since a message is carried by at least one message, and the message in the message stream is continuous, one message may contain the content of one message, and may also contain the contents of two messages.

The obtaining unit 504 obtains the total length of the second message body of the stored message. The total length of the second message body refers to the total length of the message to which the message belongs. If the message is carried by multiple messages, the sum of the message lengths carried by the multiple messages is the total length of the message. If the message carries the contents of the two messages, the message in the total length of the second message body that obtains the stored message refers to the message that the existing part of the content is transmitted to the application layer, and the total length has been stored. .

The obtaining unit 504 acquires the total length of the third message body of the message to which the stored message stream has been transmitted. The message content of the message has been transmitted to the application layer. The length of the content of the message is the total length of the third message body, because a message needs to be divided into several messages for transmission. Before the message, other messages belonging to the message have already transmitted a part of the message content to the application layer.

The determining unit 502 determines whether the packet is the first packet of the message in the packet flow, and the determining unit 502 determines whether the sum of the first message body length acquired by the obtaining unit 504 and the total length of the third message body acquired by the obtaining unit 504 is greater than The total length of the second message body obtained by the obtaining unit 504.

The determining unit 502 determines that the sum of the first message body length acquired by the obtaining unit 504 and the total length of the third message body acquired by the obtaining unit 503 is greater than the total length of the second message body acquired by the obtaining unit 504, and determines that the message is 4 The first packet of the message in the essay stream.

The forwarding unit 505, when the determining unit 502 determines that the packet is the first packet of the packet flow, forwards the packet to the application layer; when the determining unit 502 determines that the packet is the first packet of the message in the packet flow, the application unit The process forwards the message, and when the determining unit 502 determines that the message is not the first packet of the message in the packet flow, the packet is forwarded to the network.

When the determining unit 502 determines that the packet is the first packet of the packet flow or the first packet of the message in the packet flow, the forwarding unit 505 forwards the packet to the application layer because the first packet contains the message header of the message to which the packet belongs. The application layer parses the message header of the message to obtain the required information, such as the distribution of the household, the hotspot application, and the usage of the service. The message header of the message may include a first line and a header field, and may also include a first line, or may include a header field.

When the determining unit 502 determines that the message is not the first packet of the message in the packet flow, the message does not contain the message. The message header is not required to be parsed, and the forwarding unit 505 forwards the packet to the network layer, thereby improving forwarding efficiency and reducing the analysis burden of the application layer.

The accepting unit 501 is further configured to receive a length of a message header in the message sent by the application layer.

The calculating unit 506 is configured to use the total length of the first message body acquired by the obtaining unit 504, and the length of the third message body acquired by the acquiring unit, and subtract the total length of the second message body acquired by the acquiring unit, and subtract the receiving The length of the message header in the message received by the unit 501 is the total length of the fifth message body.

The calculation unit 506 obtains, by using the total length of the first message body, the length of the third message body, and the total length of the second message body, the message length of other messages carried by the message, and then uses the message to carry the message. The length of the message of the other message minus the length of the message header in the message received by the receiving unit 501 is obtained to obtain the total length of the fifth message body.

The first updating unit 507 updates the total length of the third message body to the calculating unit 506 to calculate the fifth message body length.

The receiving unit 501 is further configured to receive a sixth message body length, where the total length of the sixth message body indicates a total length of the message body of the message to which the message belongs, and the message refers to a message that has not been completely transmitted to the application layer.

The forwarding unit 505 forwards the packet to the application layer, and after receiving the packet, the application layer parses the packet. Because the packet contains the contents of two messages, the application layer parses the message carried by the packet to obtain the total length of the sixth message body.

The second updating unit 508 updates the total length of the second message body by using the total length of the sixth message body received by the receiving unit 501.

Updating the total length of the second message body by using the total length of the sixth message body includes replacing or covering the total length of the second message body with the total length of the sixth message body, so that when the total length of the second message body is acquired next time, the obtained The total length of the second message body that has been updated. The total length of the sixth message body is obtained by the application layer by parsing the message content length field of the message, and the total length of the sixth message body is the total length of the message body of the message to which the message belongs. Messages that have not been fully transferred to the application layer. Since the message is the first packet of other messages, the total length of the sixth message body is the total length of the other messages.

It can be seen that, by using the packet forwarding device provided by the embodiment of the present invention, it can be determined whether each packet in the packet flow is the first packet of the message in the packet flow, and if it is the first packet of the message, submit to the application layer. If it is not the first packet of the message, it will be directly forwarded to the network. Since there are fewer first packets and more packets than the first packet, a large number of packets that do not need to be parsed are directly forwarded to the network. The efficiency can also reduce the burden on the application layer to parse the message.

Next, a device 60 for message forwarding according to an embodiment of the present invention will be described with reference to FIG. As shown in Figure 6, device 60 includes:

The receiving unit 601, the determining unit 602, the storing unit 603, the obtaining unit 604, the forwarding unit 605, the third updating unit 606, the calculating unit 607, the first updating unit 608, and the second updating unit 609.

The receiving unit 601 is configured to receive a packet sent by the network layer.

The determining unit 602 is configured to determine whether the packet received by the receiving unit 601 is the first packet of the packet flow, and when the packet is not the first packet of the packet flow, determine whether the packet is a message in the packet flow. The first pack.

The determining unit 602 determines whether the quintuple of the packet has been stored. If the quintuple of the packet is not stored, the packet is the first packet of the packet stream; if the quintuple of the packet has been If it is stored, the packet is not the first packet of the packet stream. The quintuple of the packet includes a source IP address, a source port, a destination IP address, a destination port, and a transport layer protocol number.

When the determining unit 602 determines that the packet is not the first packet of the packet flow, the packet needs to be further judged to determine whether the packet is the first packet of the message in the packet flow.

The storage unit 603 stores the quintuple of the packet when the determining unit 602 determines that the packet is the first packet of the packet stream.

The obtaining unit 604, when the determining unit 602 determines whether the packet is the first packet of the message in the packet flow, obtains the length of the first message body carried by the packet; and obtains the total length of the second message body of the stored message; The stored total length of the transmitted portion of the message to which the message belongs to the third message body of the application layer.

The obtaining unit 604 obtains the length of the first message body carried by the packet. The receiving unit 601 is further configured to receive the total length of the packet sent by the network layer and the network layer header length of the packet. The acquiring unit 604 obtains the transport layer header length of the packet, and receives the length of the transport layer header by using the receiving unit 601. The total length of the packet is subtracted from the network layer header length of the packet, and the length of the transport layer header of the packet is subtracted to obtain the length of the first message body carried by the packet.

The obtaining unit 604 obtains the first message body length carried by the packet. The total length of the packet that has been sent to the transport layer and the length of the packet transport layer header are obtained, and the total length of the packet is subtracted from the total length of the transport layer header of the packet to obtain the first packet carrying the packet. The length of the message body. Since a message is carried by at least one message, and the message in the message stream is continuous, one message may contain the content of one message, and may also contain the contents of two messages.

The obtaining unit 604 obtains the total length of the second message body of the stored message. The total length of the second message body refers to the total length of the message to which the message belongs. If the message is carried by multiple messages, the sum of the message lengths carried by the multiple messages is the total length of the message. If the message carries the contents of the two messages, the message in the total length of the second message body that obtains the stored message refers to the message that the existing part of the content is transmitted to the application layer, and the total length has been stored. .

The obtaining unit 604 acquires the total length of the third message body of the message to which the stored message stream has been transmitted. The message content of the message has been transmitted to the application layer. The length of the content of the message is the total length of the third message body, because a message needs to be divided into several messages for transmission. Before the message, other messages belonging to the message have already transmitted a part of the message content to the application layer.

The determining unit 602 determines whether the packet is the first packet of the message in the packet flow, and the determining unit 602 determines whether the sum of the first message body length acquired by the obtaining unit 604 and the total length of the third message body acquired by the obtaining unit 504 is greater than The total length of the second message body obtained by the obtaining unit 504.

The determining unit 602 determines that the sum of the first message body length acquired by the obtaining unit 604 and the total length of the third message body acquired by the obtaining unit 603 is greater than the total length of the second message body acquired by the obtaining unit 604, and determines that the message is 4 The first packet of the message in the essay stream.

The forwarding unit 605, when the determining unit 602 determines that the packet is the first packet of the packet flow, forwards the packet to the application layer; when the determining unit 602 determines that the packet is the first packet of the message in the packet flow, the application unit The process forwards the message, and when the determining unit 602 determines that the message is not the first packet of the message in the packet flow, the packet is forwarded to the network.

When the determining unit 602 determines that the packet is the first packet of the packet flow or the first packet of the message in the packet flow, the forwarding unit 605 forwards the packet to the application layer because the first packet contains the message header of the message to which the packet belongs. The application layer parses the message header of the message to obtain the required information, such as the distribution of the household, the hotspot application, and the usage of the service. The message header of the message may include a first line and a header field, and may also include a first line, or may include a header field.

When the determining unit 602 determines that the packet is not the first packet of the message in the packet stream, the packet does not include the header of the message, so the packet does not need to be parsed, and the forwarding unit 605 forwards the packet to the network layer. , thereby improving forwarding efficiency and reducing the analysis burden of the application layer.

The third update unit 606, when the determining unit 602 determines that the packet is not the first packet of the message in the packet flow, the total length of the third message body is updated to be the total length of the third message body and the length of the first message body. with. Since the content of the message carried by the packet belongs to a message completely, the content carried by the packet belongs to the content of the sent message of the packet, and therefore the total length of the stored third message body needs to be updated. The third update unit 606 adds the message body length carried by the message to the stored total length of the message body of the message to which the message belongs, and updates the stored message stream with the added sum. The total length of the message body of the message to which the message belongs is used to determine whether the subsequent message is the first packet of the packet flow or the first packet of the message in the packet flow.

The accepting unit 601 is further configured to receive a length of a message header in the packet sent by the application layer.

The calculating unit 607 is configured to use the total length of the first message body acquired by the acquiring unit 604, plus the length of the third message body acquired by the acquiring unit, and subtract the total length of the second message body acquired by the acquiring unit, and subtract the receiving The length of the message header in the message received by the unit 601 is the total length of the fifth message body.

The calculation unit 607 obtains, by using the total length of the first message body, the length of the third message body, and the total length of the second message body, the message length of other messages carried by the message, and then uses the message to carry the message. The length of the message of the other message minus the length of the message header in the message received by the receiving unit 601 is the total length of the fifth message body.

The first updating unit 608 updates the total length of the third message body to the calculating unit 607 to calculate the fifth message body length.

The receiving unit 601 is further configured to receive a sixth message body length, where the total length of the sixth message body indicates a total length of the message body of the message to which the message belongs, and the message refers to a message that has not been completely transmitted to the application layer.

The forwarding unit 605 forwards the packet to the application layer, and after receiving the packet, the application layer parses the packet. Because the packet contains the contents of two messages, the application layer parses the message carried by the packet to obtain the total length of the sixth message body.

The second updating unit 609 updates the total length of the second message body by using the total length of the sixth message body received by the receiving unit 601.

Updating the total length of the second message body by using the total length of the sixth message body includes replacing or covering the total length of the second message body with the total length of the sixth message body, so that when the total length of the second message body is acquired next time, the obtained The total length of the second message body that has been updated. The total length of the sixth message body is obtained by the application layer by parsing the message content length field of the message, and the total length of the sixth message body is the report. The total length of the message body of the message to which the text belongs. This message refers to the message that has not been completely transmitted to the application layer. Since the message is the first packet of other messages, the total length of the sixth message body is the total length of the other messages.

FIG. 7 illustrates a structure of a message forwarding device according to another embodiment of the present invention, including at least one processor 701 (eg, a CPU), a memory 702, at least one network interface 703, and at least one communication bus 704 for implementing these Connection communication between devices. The processor 701 is configured to execute executable modules, such as computer programs, stored in the memory 702. The memory 702 may include a high speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory such as at least one disk memory. The communication connection between the network device and at least one other network element is implemented by at least one network interface 703 (which may be wired or wireless), and may use an internet, a wide area network, a local area network, a metropolitan area network, or the like.

In some embodiments, the memory 702 stores a program 7021, and the program 7021 can be executed by the processor 701. The program includes: receiving a message sent by the network layer, determining whether the message is a first packet of the message flow; When the packet is the first packet of the packet flow, the packet is forwarded to the application layer; when the packet is not the first packet of the packet flow, it is determined whether the packet is the first packet of the message in the packet flow; When the first packet of the message in the packet flow is forwarded, the packet is forwarded to the application layer. When the packet is not the first packet of the packet in the packet flow, the packet is forwarded to the network layer. The specific implementation steps are the same as those in the embodiment shown in FIG. 1, and are not described herein again.

FIG. 8 illustrates a structure of a message forwarding device according to another embodiment of the present invention, including at least one processor 801 (eg, a CPU), a memory 802, at least one network interface 803, and at least one communication bus 804 for implementing these Connection communication between devices. The processor 801 is configured to execute executable modules, such as computer programs, stored in the memory 802. The memory 802 may include a high speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory (non-volatile memory). Memory ), such as at least one disk storage. The communication connection between the network device and at least one other network element is implemented by at least one network interface 803 (which may be wired or wireless), and may use an Internet, a wide area network, a local area network, a metropolitan area network, or the like.

In some embodiments, the memory 802 stores a program 8021, and the program 8021 can be executed by the processor 801. The program includes: receiving a message sent by the network layer, determining whether the message is a first packet of the message flow; When the packet is the first packet of the packet, the packet is forwarded to the application layer, and the quintuple of the packet is stored. When the packet is not the first packet of the packet, the packet is determined to be a packet flow. The first packet of the message; when the packet is the first packet of the message in the packet flow, the packet is forwarded to the application layer; the length of the message header in the packet sent by the application layer is received, and the first message body is used. Adding the length of the third message body minus the total length of the second message body, and subtracting the length of the message header in the message to obtain the total length of the fifth message body; updating the total length of the third message body to the first The total length of the fifth message body is received, and the total length of the sixth message body sent by the application layer is received, and the total length of the second message body is updated by the total length of the sixth message body. The total length of the sixth message body indicates the message to which the message belongs. Total message body lengthThe specific implementation steps are the same as those in the embodiment shown in FIG. 2, and details are not described herein again.

FIG. 9 illustrates a structure of a message forwarding device according to another embodiment of the present invention, including at least one processor 901 (eg, a CPU), a memory 902, at least one network interface 903, and at least one communication bus 904 for implementing these Connection communication between devices. The processor 901 is operative to execute executable modules, such as computer programs, stored in the memory 902. The memory 902 may include a high speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory such as at least one disk memory. The communication connection between the network device and at least one other network element is implemented by at least one network interface 903 (which may be wired or wireless), and may use an internet, a wide area network, a local area network, a metropolitan area network, or the like.

In some embodiments, the memory 902 stores a program 9021, and the program 9021 can be executed by the processor 901. The program includes: receiving a message sent by the network layer, determining whether the message is a first packet of the message flow; When the packet is the first packet of the packet, the packet is forwarded to the application layer, and the quintuple of the packet is stored. When the packet is not the first packet of the packet, the packet is determined to be a packet flow. The first package of the message; When the packet is not the first packet of the packet in the packet flow, the packet is forwarded to the network layer, and the total length of the third message body is updated to be the sum of the total length of the third message body and the length of the first message body; When the packet is the first packet of the message in the packet flow, the packet is forwarded to the application layer; the length of the message header in the packet sent by the application layer is received, and the total length of the first message body is added to the length of the third message body. Subtracting the total length of the second message body, and subtracting the length of the message header in the packet to obtain a total length of the fifth message body; updating the total length of the third message body to the total length of the fifth message body; receiving the application layer The total length of the sixth message body is sent, and the total length of the second message body is updated by the total length of the sixth message body. The total length of the sixth message body indicates the total length of the message body of the message to which the message belongs. The specific implementation steps are the same as those in the embodiment shown in FIG. 3, and details are not described herein again.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because in accordance with the present invention, certain steps may be performed in other sequences or concurrently. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

For the information exchange, the execution process, and the like between the above-mentioned devices and the modules in the system, the content is the same as that of the method embodiment of the present invention. For details, refer to the description in the method embodiment of the present invention, and details are not described herein again.

A person skilled in the art can understand that all or part of the process of implementing the above embodiments can be completed by a computer program to instruct related hardware, and the above program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM: Read Random Memory), or a random access memory (RAM). The description of the examples is only for helping to understand the method and the idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific embodiments and application scopes. The description is not to be construed as limiting the invention.

Claims

Rights request

1. A message forwarding method, characterized in that the method includes:

Receive the message sent by the network layer and determine whether the message is the first packet of the message flow;

When the message is the first packet of the message flow, forward the message to the application layer;

When the message is not the first packet of the message flow, determine whether the message is the first packet of the message in the message flow;

When the message is the first packet of the message in the message flow, forward the message to the application layer;

When the message is not the first packet of the message in the message flow, the message is forwarded to the network layer.

2. The method of message forwarding according to claim 1, characterized in that, determining whether the message is the first packet of a message in the message flow includes:

Obtain the length of the first message body carried by the message;

Obtain the total length of the stored second message body of the message to which the message belongs;

Obtain the stored total length of the third message body of the transmitted part of the message to which the message belongs;

When the sum of the total length of the third message body and the length of the first message body is greater than the total length of the second message body, determine that the message is the first packet of the message in the message flow;

When the sum of the total length of the third message body and the length of the first message body is less than or equal to the total length of the second message body, it is determined that the message is not the first packet of the message in the message flow.

3. The method of message forwarding according to claim 2, wherein when the message is the first packet of a message in the message flow, after forwarding the message to the application layer, the method further: include:

Receive the length of the message header in the message sent by the application layer, add the first message body length to the total length of the third message body, and then subtract the total length of the second message body, and then subtract The length of the message header in the message is used to obtain the total length of the fifth message body;

The total length of the third message body is updated to the total length of the fifth message body.

4. The message forwarding method according to claim 2 or 3, characterized in that, after forwarding the message to the application layer, it further includes:

Receive the total length of the sixth message body sent by the application layer, and update the total length of the second message body with the total length of the sixth message body, where the total length of the sixth message body represents the message to which the message belongs. total body length.

5. The message forwarding method according to claim 2, wherein the sum of the total length of the third message body and the length of the first message body is less than or equal to the total length of the second message body. , the method also includes: The total length of the third message body is updated to the sum of the total length of the third message body and the length of the first message body.

6. The message forwarding method according to any one of claims 2 to 5, characterized in that said obtaining the length of the first message body carried by the message includes:

Receive the total length of the message sent by the network layer and the network layer header length of the message; obtain the transport layer header length of the message;

The length of the network layer header of the message is subtracted from the total length of the message, and then the length of the transport layer header of the message is subtracted to obtain the length of the first message body carried by the message.

7. The message forwarding method according to any one of claims 2 to 5, characterized in that said obtaining the length of the first message body carried by the message includes:

Get the total length of the message;

Obtain the transport layer header length of the message;

The length of the first message body carried by the message is obtained by subtracting the length of the transport layer header of the message from the total length of the message.

8. The message forwarding method according to any one of claims 1 to 7, wherein the determining whether the message is the first packet of the message flow includes:

Determine whether the quintuple of the message has been stored. If the quintuple of the message has not been stored, the message is the first packet of the message flow.

9. The method of message forwarding according to claim 8, characterized in that, when the message is the first packet of the message flow, it also includes:

Store the five-tuple of the message.

10. A device for forwarding messages, characterized in that the device includes:

The receiving unit is used to receive messages sent by the network layer;

A judgment unit, used to judge whether the message received by the receiving unit is the first packet of the message flow; when judging that the message is not the first packet of the message flow, judge whether the message is the first packet of the message flow. The first packet of the message; the forwarding unit, when the judgment unit judges that the message is the first packet of the message flow, forwards the message to the application layer; when the judgment unit judges that the message is in the message flow When the judgment unit determines that the message is not the first packet of the message in the message flow, the message is forwarded to the network layer.

11. The device for message forwarding according to claim 10, further comprising an acquisition unit, the acquisition unit being used to acquire the length of the first message body carried by the message; The total length of the second message body of the message to which the message belongs; Obtaining the total length of the stored third message body of the transmitted part of the message to which the message belongs;

The judgment unit is specifically used for:

When the sum of the length of the first message body obtained by the obtaining unit and the total length of the third message body obtained by the obtaining unit is greater than the total length of the second message body obtained by the obtaining unit, it is determined that the message is a message The first packet of the message in the stream;

When the sum of the length of the first message body obtained by the obtaining unit and the total length of the third message body obtained by the obtaining unit is less than or equal to the total length of the second message body obtained by the obtaining unit, it is determined that the message is not in the message stream The first packet of the message.

12. The device for message forwarding according to claim 11, further comprising a calculation unit and a first update unit, when the judgment unit determines that the message is the first packet of a message in the message flow, After the forwarding unit forwards the message to the application layer,

The receiving unit is also used to receive the length of the message header in the message sent by the application layer; the calculating unit is used to add the total length of the first message body obtained by the obtaining unit to the total length obtained by the obtaining unit. The length of the third message body is obtained by subtracting the total length of the second message body obtained by the obtaining unit and subtracting the length of the message header in the message received by the receiving unit to obtain the total length of the fifth message body; An update unit is used to update the total length of the third message body to the total length of the fifth message body calculated by the calculation unit.

13. The message forwarding device according to claim 11 or 12, further comprising a second update unit; the total length of the sixth message body sent by the layer, and the total length of the sixth message body represents The total length of the message body of the message to which the message belongs;

The second update unit is configured to update the second message body total length to the sixth message body total length received by the receiving unit.

14. The device for message forwarding according to any one of claims 11 to 13, characterized in that it further includes a third update unit, and the judging unit judges that the length of the first message body obtained by the obtaining unit is the same as the length of the first message body obtained by the obtaining unit. When the obtained total length of the third message body is less than or equal to the total length of the second message body obtained by the obtaining unit,

The third update unit is configured to update the total length of the third message body to the sum of the total length of the third message body and the length of the first message body.

15. The device for forwarding messages according to any one of claims 11 to 14, characterized in that the receiving unit is further configured to receive the total length of the message sent by the network layer and the network layer of the message. head length;

The obtaining unit is also used to: obtain the length of the transport layer header of the message; use the length received by the receiving unit to obtain the length of the first message body carried by the message.

16. The device for forwarding messages according to any one of claims 11 to 14, characterized in that the acquisition unit is also used to:

Obtain the total length of the message; Obtain the transport layer header length of the message; Subtract the transport layer header length of the message from the total length of the message to obtain the first value carried by the message. Message body length.

17. The device for forwarding messages according to any one of claims 10 to 16, characterized in that the judgment unit determines whether the message is the first packet of the message flow by: not being stored, then the message The packet is the first packet of the message flow.

18. The device for forwarding messages according to claim 17, further comprising a storage unit, when the message is the first packet of the message flow,

The storage unit stores the five-tuple of the message.