CN101989978A - Method, device and system for forwarding data by real time streaming protocol (RTSP) proxy - Google Patents
Method, device and system for forwarding data by real time streaming protocol (RTSP) proxy Download PDFInfo
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- CN101989978A CN101989978A CN2009101095582A CN200910109558A CN101989978A CN 101989978 A CN101989978 A CN 101989978A CN 2009101095582 A CN2009101095582 A CN 2009101095582A CN 200910109558 A CN200910109558 A CN 200910109558A CN 101989978 A CN101989978 A CN 101989978A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1045—Proxies, e.g. for session initiation protocol [SIP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
Abstract
The embodiment of the invention discloses a method, device and system for forwarding data by a real time streaming protocol (RTSP) proxy. The method comprises the following steps of: receiving an RTSP request of an RTSP client end by an RTSP proxy; generating a relevance relation list of a client end identification and a business identification according to the RTSP request; and forwarding the RTSP response message to the RTSP client end corresponding to the client end identification according to the relevance relation list. The invention solves the problem that the client end can not receive the response message because the RTSP proxy can not distinguish the RTSP client end to which the response message returned by a server belongs, perfects the function of the RTSP proxy and simplifies the processing flow of the RTSP proxy.
Description
Technical field
The present invention relates to communication technical field, particularly relate to method, Apparatus and system that a kind of real-time streaming protocol agency transmits data.
Background technology
(Real Time Streaming Protocol is the agreement that is exclusively used in media-on-demand control RTSP), based on server/customer end constitution to real-time streaming protocol.Client, server can initiatively send message to the other side.Will set up a TCP between the client-server earlier and connect, the message of later session control all occurs in this connection.Real-time streaming protocol 2.0 has defined several main message m ethod, in order to the required major function of expression control, to come media flow transmission is controlled by using these message, for example described message has the inquiry of description DESCRIBE, GET_PARAMETER gets parms, option OPTIONS suspends PAUSE, plays PLAY, be redirected REDIRECT, build session SETUP, parameter S ET_PARAMETER is set, end session TEARDOWN.
It is the network equipment between the server RTSP Server (below abbreviation Server) between the client RTSP of RTSP agreement Client (below abbreviation Client) and RTSP agreement that real-time streaming protocol is acted on behalf of RTSP Proxy, be illustrated in figure 1 as real-time streaming protocol and act on behalf of Organization Chart, RTSP Proxy has forwarding RTSP signaling and transmits the function of Server to the RTP Media Stream of Client.RTSP Proxy takes on server and client side's role simultaneously, and as Fig. 1, for RTSP Client, RTSP Proxy is exactly its server, and for RTSP Server, RTSP Proxy is exactly its client.When RTSP Client when RTSP Server sends the RTSP request message, after RTSP Proxy receives this request message, be transmitted to RTSP Server; After returning the response message that response message receives Server for RTSPClient, RTSP Proxy, RTSP Server is transmitted to RTSP Client.
In research and practice process to prior art, the inventor finds that there is following problem in prior art: when a RTSP Proxy inserts a plurality of RTSP Client, can receive a plurality of RTSP request messages of a plurality of RTSP Client, but because the message bearing between RTSP Proxy and the RTSP Server is on same network link (TCP links or UDP links), therefore when RTSP Proxy should a plurality of request messages be transmitted to RTSP Server, RTSP Server can't distinguish the RTSP Client that these message belongs to, can't create session for each RTSP Client, the response message that while RTSPProxy also can't return RTSP Server sends to corresponding request end RTSPClient, cause client can't receive this response message, influence the mutual of signaling message.
Summary of the invention
The embodiment of the invention provides a kind of real-time streaming protocol to act on behalf of method, Apparatus and system that RTSP Proxy transmits data, be used to solve RTSP Proxy and insert a plurality of RTSP protocol clients, the response message that RTSP Proxy can't return RTSP Server sends to corresponding request end RTSP Client, thereby causes client can't receive the problem of this response message.
A kind of real-time streaming protocol that the embodiment of the invention provides is acted on behalf of the method that RTSP Proxy transmits data, comprising:
Reception is from the first real-time streaming protocol RTSP request of a plurality of real-time streaming protocol clients;
According to described RTSP request,, and generate the incidence relation table of described client identification and service identification for described real-time streaming protocol client is distributed client identification and service identification;
The RTSP request of carrying described service identification is transmitted to the real-time streaming protocol server;
Receive a RTSP response message of described real-time streaming protocol server, carry described service identification in the described RTSP response message, and be index with described service identification, obtain client identification by searching described incidence relation table, a described RTSP response message is transmitted to the real-time streaming protocol client corresponding with described client identification.
A kind of real-time streaming protocol that the embodiment of the invention provides is acted on behalf of the device that RTSP Proxy transmits data, comprising:
First receiving element is used to receive the first real-time streaming protocol RTSP request from a plurality of real-time streaming protocol clients;
The incidence relation table generates the unit, is used for for described real-time streaming protocol client is distributed described client identification and service identification, and generating the incidence relation table of described client identification and service identification according to described RTSP request;
First transmitting element, the RTSP request that is used for carrying described service identification is transmitted to the real-time streaming protocol server;
Second receiving element is used to receive a RTSP response message of described real-time streaming protocol server, carries described service identification in the described RTSP response message;
Second transmitting element, the service identification that is used for carrying with the RTSP response message that described second receiving element receives is an index, obtain client identification by searching described incidence relation table, described RTSP response message is transmitted to the real-time streaming protocol client corresponding with described client identification.
A kind of real-time streaming protocol that the embodiment of the invention provides is acted on behalf of the system that RTSP Proxy transmits data, comprising: a plurality of real-time streaming protocol clients, real-time streaming protocol agency and real-time streaming protocol server:
Described real-time streaming protocol client is connected with described real-time streaming protocol agency, is used to send the first real-time streaming protocol RTSP and asks to described real-time streaming protocol agency, and receive the RTSP response message that described real-time streaming protocol agency returns;
Described real-time streaming protocol agency is connected with described real-time streaming protocol server with described real-time streaming protocol client respectively, is used to receive the first real-time streaming protocol RTSP request from a plurality of real-time streaming protocol clients; According to described RTSP request,, and generate the incidence relation table of described real-time streaming protocol client identification and service identification for described real-time streaming protocol client is distributed described client identification and professional mark; The RTSP request of carrying described service identification is transmitted to the real-time streaming protocol server; And receive the RTSP response message of described server, carry described service identification in the described RTSP response message, and be index with described service identification, by searching the described client identification that described incidence relation table is attained at described service identification correspondence, described RTSP response message is transmitted to the described real-time streaming protocol client corresponding with described client identification.
Described real-time streaming protocol server, be connected with described real-time streaming protocol agency, be used to receive the RTSP request that described real-time streaming protocol agency sends, according to different described service identifications, for described real-time streaming protocol client is set up different sessions, and return described RTSP response message and give described real-time streaming protocol agency, wherein, carry described service identification in the described RTSP response message.
The embodiment of the invention provides a kind of real-time streaming protocol agency to transmit the method for data, and Apparatus and system is by receiving the first real-time streaming protocol RTSP request from a plurality of real-time streaming protocol clients; According to described RTSP request,, and generate the incidence relation table of described client identification and service identification for described real-time streaming protocol client is distributed client identification and service identification; The RTSP request of carrying described service identification is transmitted to the real-time streaming protocol server; Receive a RTSP response message of described real-time streaming protocol server, carry described service identification in the described RTSP response message, and be index with described service identification, obtain client identification by searching described incidence relation table, a described RTSP response message is transmitted to the real-time streaming protocol client corresponding with described client identification, solve RTSP Proxy and inserted a plurality of RTSP protocol clients, the response message that RTSP Proxy can't return RTSP Server sends to corresponding request end RTSP Client, thereby cause client can't receive the problem of this response message, the perfect function of RTSP Proxy has been simplified the handling process of RTSP Proxy.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 acts on behalf of Organization Chart for the present invention's a kind of real-time streaming protocol of the prior art;
Fig. 2 is the method flow diagram that a kind of real-time streaming protocol agency in the embodiment of the invention transmits data;
Fig. 3 is the specific implementation flow chart that a kind of real-time streaming protocol agency transmits data in the embodiment of the invention;
Fig. 4 is a kind of session association relation table in the embodiment of the invention;
Fig. 5 is an another kind of session association relation table in the embodiment of the invention;
Fig. 6 is the specific implementation flow chart that another kind of real-time streaming protocol agency transmits data in the embodiment of the invention;
Fig. 7 is a kind of affairs incidence relation table in the embodiment of the invention;
Fig. 8 is the structure drawing of device that a kind of real-time streaming protocol agency transmits data in the embodiment of the invention;
Fig. 9 is the system construction drawing that a kind of real-time streaming protocol agency in the embodiment of the invention transmits data.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
As shown in Figure 2, act on behalf of the method flow diagram that RTSP Proxy transmits data, may further comprise the steps for a kind of real-time streaming protocol in the embodiment of the invention:
Step S202 receives the first real-time streaming protocol RTSP request from a plurality of real-time streaming protocol client RTSP Client.
Be specially: RTSP Proxy receives the different RTSP request that a plurality of RTSP Client send.
Step S204, according to described real-time streaming protocol RTSP request, for described a plurality of RTSP Client distribute client identification and service identification respectively, and generate the incidence relation table of described real-time streaming protocol client identification and service identification, wherein said client identification comprises: the Transaction Identifier of described client, perhaps described client-side session sign.
When described client identification is the Transaction Identifier of described client, describedly distribute described client identification and service identification, and the incidence relation table that generates described real-time streaming protocol client identification and service identification comprises specifically for described RTSPClient:
RTSP Proxy is that described RTSP Client distributes described client transaction sign and service identification, and generates the incidence relation table of described client transaction sign and service identification.
When described Client ID is described client-side session sign, describedly distribute described client identification and service identification, and the incidence relation table that generates described real-time streaming protocol client identification and service identification comprises specifically for described RTSPClient:
RTSP Proxy is that described RTSP Client distributes described client-side session sign and service identification;
Generating described client session sign, service identification and described server is the incidence relation table of the described server session sign of described client distribution, and wherein said server session sign is by receiving the RTSP response message acquisition of described Server.
Wherein, described RTSP Server server side is when the RTSP request of handling session, storing about service identification and described RTSP Server simultaneously is the incidence relation table of the described server session sign of described client distribution, use when session is handled so that carry out next time, can certainly this incidence relation table not stored at server side, can further handle session by the service identification and the server session identification that carry in the RTSP request message.
Step S206 is transmitted to real-time streaming protocol server RTSP Server with the RTSP request of carrying described service identification.
Step S208, receive the RTSP response message of described RTSP Server, carry described service identification in the described RTSP response message, and be index with described service identification, obtain corresponding client session sign by searching described incidence relation table, a described RTSP response message is transmitted to and the corresponding described RTSP Client of described client session sign.
When described client identification was described client-side session sign, described method also comprised:
RTSP Proxy receives the second real-time streaming protocol RTSP request from described RTSP Client, carries described client session sign in the described second real-time streaming protocol RTSP request;
Be designated index with described client session,, obtain described server session sign and the service identification corresponding with described client by searching described incidence relation table;
Described server session sign and service identification are carried in described the 2nd RTSP request, are transmitted to and the corresponding RTSP Server of described server session sign, make described RTSP Server carry out session and handle according to described server session sign;
Receive the 2nd RTSP response message that described RTSP Server returns, carry described service identification in the described RTSP response message, and be index with described service identification, by searching described incidence relation table, described RTSP response message is transmitted to the described RTSPClient corresponding with described client identification.
A wherein said RTSP request message and described the 2nd RTSP request message can for: the inquiry DESCRIBE, GET_PARAMETER gets parms, option OPTIONS, suspend PAUSE, play PLAY, be redirected REDIRECT, build session SETUP, parameter S ET_PARAMETER is set, any one or a few message of end session TEARDOWN, and when the first time, the RTSP request message was session, described the 2nd RTSP request message can or wait successively for the third time and ask to RTSP Rroxy for the second time, and is not limited to number of times.
The flow process that above-mentioned steps is described can be applied in session interaction flow process and the transaction interaction flow process, for example: the session interaction flow process of typically playing and finishing can be described in the following embodiments in detail.
The embodiment of the invention is by receiving the first real-time streaming protocol RTSP request from a plurality of real-time streaming protocol client RTSP Client; According to described RTSP request, generate the incidence relation table of described real-time streaming protocol client identification and service identification; The RTSP request of carrying described service identification is transmitted to real-time streaming protocol server RTSP Server; By receiving the RTSP response message of described RTSP Server, and be index with the described service identification that carries in the RTSP response message, search described incidence relation table, described RTSP response message is transmitted to and the corresponding described RTSPClient of described client session sign, solve RTSP Proxy and inserted a plurality of RTSP protocol clients, the response message that RTSP Proxy can't return RTSP Server sends to corresponding request end RTSP Client, thereby cause client can't receive the problem of this response message, the perfect function of RTSP Proxy has been simplified the handling process of RTSP Proxy.
As shown in Figure 3, act on behalf of the specific implementation flow chart that RTSP Proxy transmits data, may further comprise the steps for a kind of real-time streaming protocol in the embodiment of the invention:
It is conversation request message that the following examples specifically describe when real-time streaming protocol client RTSP Client sends the first real-time streaming protocol RTSP request message, and described real-time streaming protocol client identification Client ID is the situation of described client-side session sign Client Session ID, but be not limited to the application scenarios of session, can also use in the request message with other.
Step S300, real-time streaming protocol client RTSP Client sends real-time streaming protocol RTSP and asks to act on behalf of RTSP Proxy to real-time streaming protocol.
Wherein, the RTSP Client that is connected with described RTSP Proxy has a plurality of, and described RTSP request is meant that RTSP Client sends to the request message of RTSP Proxy for the first time, and described request message can be conversation request message, also can be other request message.
Step S302, RTSP Proxy receives the RTSP request that a plurality of RTSP Client send, for described RTSP Client distributes described client session sign and service identification, and generate the incidence relation table of described real-time streaming protocol client session sign, service identification and server session identification, wherein, described server session sign is obtained from a RTSP response message that returns.
The incidence relation table of concrete described client session sign, service identification and server session identification as shown in Figure 4.
Fig. 4 is a kind of session association relation table in the embodiment of the invention, comprise in the table: the client session sign, be that RTSP Proxy is the client session sign that described RTSP Client distributes, for the different RTSP request that each RTSP Client among a plurality of RTSP Client sends, RTSP Proxy identifies by client session that to distinguish be the RTSP request which RTSP Client sends; Described server session sign is that described RTSP Server is that described RTSP Client distributes, and specifically carries in the response message that returns by RTSP Server to return, and is used for RTSP Server and distinguishes RTSPClient; Described service identification is used for RTSP Proxy and distinguishes the response message corresponding service data field that RTSP Server returns, and also is used for the different sessions request that RTSP Server distinguishes next same RTSP Proxy.RTSP Proxy is that a session distributes a service identification, and in session interaction process, service identification remains unchanged.For example: RTSP Proxy generation client-side session is designated " 1 " and then can be expressed as: client-side session sign-1; Service identification is " X ", then is expressed as: service identification-x; The session identification of the server end that returns according to the RTSP response message is " A ", then is expressed as: the session identification-A of server end.
Wherein, can also comprise in the described session association relation table: session information Session-Info option, be used for information such as the address of the session information of the session information of described Client, Server, Client or message parameter are recorded in this option, this point is all to need in the present session to be described, and just no longer specifically describes at this.
The RTSP request that step S304, RTSP Proxy will carry described service identification is transmitted to real-time streaming protocol server RTSP Server.
Be specially: by expanding described RTSP request message, in described message, carry described ServiceID, described message is sent to corresponding RTSP Server to be handled, wherein said can RTSPServer be a plurality of, but concrete this RTSP that receives asks to select the concrete RTSP Server among a plurality of RTSP Server to handle for RTSP Proxy according to the content decision of request.
Step S306, RTSP Server receive described RTSP request, according to described request, for the request message that the different business from same Proxy identifies, set up different sessions.
Step S308, RTSP Server are described RTSP Client distribution server session identification, and return a RTSP response request and give described RTSP Proxy, carry described server session sign and service identification in the described RTSP response request.
Step S310, RTSP Server are stored as the server session sign of described RTSP Client distribution and the incidence relation table of service identification.
The incidence relation table of concrete server session sign and service identification is shown in Figure 5.
Fig. 5 is an another kind of session association relation table in the embodiment of the invention, is stored in RTSP Server side, and described incidence relation table comprises: server session sign and service identification; This server session sign is used for RTSP Server this client has been set up session, so that when next time, this RTSP Client asked once more, this session is proceeded to handle, and avoids repeating to set up session; Described service identification is used for RTSP Proxy and distinguishes the response message corresponding service data field that RTSP Server returns, and also is used for the different sessions request that RTSP Server distinguishes next same RTSP Proxy.RTSPProxy is that a session distributes a service identification, and in session interaction process, service identification remains unchanged.For example: RTSP Proxy generation client-side session is designated " 1 " and then can be expressed as: client-side session sign-1; Service identification is " X ", then is expressed as: service identification-x; The session identification of the server end that returns according to the RTSP response message is " A ", then is expressed as: the session identification-A of server end.
Specifically can be referring to the detailed description of following example.
It should be noted that this step 310 is an optional step, promptly can be stored as the server session sign of described RTSP Client distribution and the incidence relation table of service identification, also can not store in RTSP Server side.When if RTSP Server does not store this incidence relation table, also can carry out session and handle according to the server session sign of carrying in the RTSP request.
Wherein, step S308 and step S310 do not have the restriction of sequencing.
Step S312, RTSP Proxy receives the RTSP response message that RTSP Server returns, and the server session that the server session sign of carrying in the described RTSP response message is write in the described incidence relation table identifies in the option
Step S313, RTSP Proxy is an index according to the service identification that carries in the described RTSP response message, find described service identification clients corresponding sign by the described incidence relation table of storing among the RTSP Proxy, described RTSP response message is transmitted to the described RTSP Client corresponding with described client identification.
Step S314, RTSP Client send the 2nd RTSP request message to RTSP Proxy, carry described client session sign in described second request.
Step S316, RTSP Proxy receives described the 2nd RTSP request message, according to the client session sign of carrying in the described request message, search the session association relation table of self storing, obtain described server session sign and the service identification corresponding with described client.
Wherein, the described incidence relation table of self storing is that described client session sign, service identification and described server are the incidence relation table of the described server session sign of described client distribution, and is promptly shown in Figure 4.
Step S318, RTSP Proxy is carried at described server session sign and service identification in the described RTSP request, is transmitted to and the corresponding RTSP Server of described server session sign.
Step S320, RTSP Server receive described second request message, according to the server session sign of carrying in the described request message, described session are handled.
Step S322 returns the 2nd RTSP response message and gives described RTSP Proxy, carries described service identification in described the 2nd RTSP response message.
Wherein, RTSP Server also determines whether that according to the value of service identification needs generate a plurality of business, such as, when Server receives the service request of same Proxy, if the different business sign is arranged, Server will be considered as the different business request, can generate a plurality of business datums district.
Step S324, RTSP Proxy receive described the 2nd RTSP response message, are index with the described service identification that carries in the described response message, by searching described incidence relation table, obtain described client session sign.
Step S326 is transmitted to described the 2nd RTSP response message and the corresponding described RTSP Client of described client session sign, makes RTSP Client receive described RTSP response message.
Wherein,, can upgrade the corresponding information of this session, the session information after the described renewal be write in the session information Session-Info option in the incidence relation table of self storing according to described service identification.
Above-mentioned interaction flow also is applicable to the application scenarios that a RTSP Proxy need be connected with a plurality of Server, only need carry the service identification field in the Signalling exchange message between RTSP Proxy and a plurality of RTSP Server and get final product.
Specifically describe below in conjunction with a typical session interaction flow process of playing and finishing, described request comprises about RTSP: build session Setup, play Play, suspend Pause and end session Teardown.For example: RTSP Client is SETUP message to the RTSP request that RTSP Proxy sends, and message is exemplified below:
C-＞P：SETUP?rtsp：//foo/twister/video?RTSO/1.0
CSeq：1
Transport：RTP/AVP；unicast；client_port＝8002-8003
RTSP Proxy generates client session sign Client Session ID: client session sign Client Session ID-1 and service identification ServiceID: service identification ServiceID-x, and transmit this message and give RTSP Server, carry service identification ServiceID-x field or option in the message, message is exemplified below (followingly represents service identification with ServiceID, but be not that the unique use Service ID of expression represents service identification, only describe as example.Described service identification is used for RTSP Proxy and distinguishes the response message corresponding service data field that RTSP Server returns, and also is used for the different sessions request that RTSP Server distinguishes next same RTSP Proxy.RTSPProxy is that a session distributes a service identification, and in session interaction process, what service identification remained unchanged all can represent this service identification):
P-＞S：SETUP?rtsp：//foo/twister/video?RTSP/1.0
CSeq：1
Transport：RTP/AVP；unicast；client_port＝10000-10001
Service-ID：1234
RTSP Server is the described server session sign ServerSession ID:Server Session ID-A that described client is distributed, and the service identification ServiceID-x that receives of record, returning to after the processing in the response message of RTSP Proxy needs to carry ServiceID-x, is exemplified below:
S-＞P：RTSP/1.0?200?OK
CSeq：1
Transport：RTP/AVP；unicast；client_port＝10000-10001；
server_port＝12004-12005
Session：22345679
Service-ID：1234
RTSP Proxy according to service identification ServiceID-x, search the incidence relation table of self storing, find corresponding Client Session ID-1, and the session identification of record RTSP Server generation: Server Session ID-A, according to this session identification Server Session ID-A, response message is transmitted to Client, is exemplified below:
P-＞C：RTSP/1.0?200?OK
CSeq：1
Transport：RTP/AVP；unicast；client_port＝8002-8003；
server_port＝9004-9005
Session：12345678
When RTSP Client sends PLAY message to Proxy, message is exemplified below:
C-＞P：PLAY?rtsp：//foo/twister?RTSP/1.0
CSeq：2
Range：npt＝0-
Session：12345678
RTSP Proxy identifies according to client-side session: Client Session ID-1 finds the corresponding service sign: ServiceID-x and server session identification Server Session ID-A, in being transmitted to the Play message of RTSP Server, carry server session sign Server SessionID-A and service identification: the ServiceID-x field, message is exemplified below:
P-＞S：PLAY?rtsp：//foo/twister?RTSP/1.0
CSeq：2
Range：npt＝0-
Session：22345679
Service-ID：1234
RTSP Server finds corresponding data field according to session identification Server Session ID-A, and returning to after the processing in the response message of RTSP Proxy needs to carry service identification: the ServiceID-x field is exemplified below:
S-＞P：RTSP/1.0?200?OK
CSeq：2
Session：22345679
RTP-Info：url＝rtsp：//foo/twister/video；
seq＝10092；rtptime＝1120089
Service-ID：1234
RTSP Proxy finds the session identification of clients corresponding according to service identification: ServiceID-x: Client Session ID-1, identify according to this client-side session: Client Session ID-1 is transmitted to RTSP Client to response message, is exemplified below:
P-＞C：RTSP/1.0?200?OK
CSeq：2
Session：12345678
RTP-Info：url＝rtsp：//foo/twister/video；
seq＝40023；rtptime＝3450012
When RTSP Client is identical to the flow process that RTSP Proxy sends the flow process of PAUSE message and teardown such as above-mentioned description, do not repeat them here.
The embodiment of the invention provides a kind of real-time streaming protocol to act on behalf of the specific implementation method that RTSP Proxy transmits data, by receiving the real-time streaming protocol RTSP request from a plurality of real-time streaming protocol client RTSP Client; According to described RTSP request, generate the incidence relation table of described real-time streaming protocol client identification ClientSession ID and service identification Service ID; The RTSP request of carrying described Service ID is transmitted to real-time streaming protocol server RTSP Server; By receiving the RTSP response message of described RTSPServer, and be index with the described Service ID that carries in the RTSP response message, search described incidence relation table, described RTSP response message is transmitted to the described RTSP Client corresponding with described ClientSessionID, solve RTSP Proxy and inserted a plurality of RTSP protocol clients, the response message that RTSP Proxy can't return RTSP Server sends to corresponding request end RTSP Client, thereby cause client can't receive the problem of this response message, the perfect function of RTSP Proxy has been simplified the handling process of RTSP Proxy.
Fig. 6 acts on behalf of the specific implementation flow chart that RTSP Proxy transmits data for another kind of real-time streaming protocol in the embodiment of the invention, does specific descriptions below in conjunction with the specific implementation flow chart that Fig. 6 acts on behalf of RTSP Proxy forwarding data to another kind of real-time streaming protocol in the embodiment of the invention.
Real-time streaming protocol is described below to be acted on behalf of RTSP Proxy and not only can receive outside the RTSP message of real-time streaming protocol client about session, can also receive RTSP message about affairs, application scenarios such as message such as option OPTIONS, inquiry DESCRIBE, announcement ANNOUNCE, message flow is only finished by a pair of request and response message, and this class message is referred to as transactions classes message.Proxy only need be these class message establishing affairs.Comprise client transaction sign and service identification in the incidence relation table about affairs, carry this service identification with the interaction message of real-time streaming protocol server RTSP Server, receive the response message of RTSP Server, according to service identification location incidence relation table, response message is transmitted to client, whole affairs promptly finish, and are specific as follows:
Step S600, real-time streaming protocol client RTSP Client sends real-time streaming protocol RTSP and asks to act on behalf of RTSP Proxy to real-time streaming protocol.
Wherein, the RTSP Client that is connected with described RTSP Proxy has a plurality of, and described request message can be transaction request message.
Step S602, described RTSP Proxy receives the RTSP request that a plurality of RTSP Client send, for described RTSP Client distributes the Transaction Identifier and the service identification of described client, and generate the incidence relation table of described real-time streaming protocol client identification and service identification.
Be client transaction when sign about described client identification specifically, the affairs incidence relation table that generates described client transaction sign and service identification as shown in Figure 7.
Fig. 7 is a kind of affairs incidence relation table in the embodiment of the invention, be stored among the RTSP Proxy, comprise in the table: the client transaction sign, be that RTSP Proxy is the client transaction sign that described RTSP Client distributes, for the different RTSP request that each RTSP Client among a plurality of RTSP Client sends, RTSP Proxy identifies by client transaction that to distinguish be the RTSP request which RTSP Client sends; Described service identification is used for RTSP Proxy and distinguishes the response message corresponding service data field that RTSP Server returns, and also is used for the different sessions request that RTSP Server distinguishes next same RTSP Proxy.RTSP Proxy is that a session distributes a service identification, and in session interaction process, service identification remains unchanged.For example: RTSP Proxy generation client transaction is designated " 1 " and then can be expressed as: client transaction sign-1; Service identification is " Y ", then is expressed as: service identification-Y has been described in detail in the following concrete example.
The RTSP request that step S604, RTSP Proxy will carry described Service ID is transmitted to real-time streaming protocol server RTSP Server.
Be specially: field by expanding in the described RTSP request message of RTSP Proxy, carry described service identification, described message is sent to corresponding RTSP Server to be handled, wherein said RTSP Server is a plurality of, but concrete this RTSP that receives asks to select the concrete RTSP Server among a plurality of RTSP Server to handle for RTSP Proxy according to the content decision of request.
Step S606, RTSP Server receive described RTSP request, and according to described request, RTSPServer carries out Message Processing for the request message of the different Service ID of next same Proxy.
Step S607 returns the RTSP Proxy that the RTSP response message is given response, carries described service identification in the described response message.
Step S608, RTSP Proxy receives the RTSP response message that RTSP Server returns, according to the service identification that carries in the described RTSP response message is index, by searching the described affairs incidence relation table of storing among the RTSP Proxy, obtains the client transaction sign.
Step S610, RTSP Proxy is transmitted to described RTSP response message and the corresponding RTSP Client of described client transaction sign, makes described RTSP Client receive the RTSP response message that described RTSP Proxy returns.
Above-mentioned interaction flow also is applicable to the application scenarios that a RTSP Proxy need be connected with a plurality of Server, only need carry described service identification field in the Signalling exchange message between RTSP Proxy and a plurality of RTSP Server and get final product.
Specifically describing below in conjunction with a typical transaction interaction flow, is that option OPTIONS message is example with the RTSP request message:
This RTSP Client sends Options message to RTSP Proxy, and message is exemplified below:
C-＞P：OPTIONS*RTSP/1.0
CSeq：0
Require：implicit-play
Proxy-Require：gzipped-messages
RTSP Proxy at first generates the client transaction sign: Client Transaction ID:ClientTransaction ID-1 and related service identification ServiceID:ServiceID-x, RTSP Proxy transmits options message and gives RTSP Server, increase the ServiceID field in the message, message is exemplified below that (the described client transaction sign is here represented with Client Transaction ID, service identification is represented with ServiceID, but be not that the unique use Service ID of expression represents service identification, only describe as example.Described service identification is used for RTSP Proxy and distinguishes the response message corresponding service data field that RTSPServer returns, and also is used for the different sessions request that RTSP Server distinguishes next same RTSP Proxy.RTSP Proxy is that a session distributes a service identification, and in session interaction process, what service identification remained unchanged all can represent this service identification):
P-＞S：OPTIONS*RTSP/1.0
CSeq：0
Require：implicit-play
Proxy-Require：gzipped-messages
Service-ID：1235
Return to the service identification that needs to carry in the response message of RTSP Proxy from RTSP Proxy after RTSP Server handles: ServiceID-x is exemplified below:
S-＞P：RTSP/1.0?200?OK
CSeq：0
Public：DESCRIBE，SETUP，TEARDOWN，PLAY，PAUSE
Service-ID：1235
RTSP Proxy searches affairs incidence relation table according to service identification ServiceID-x, finds corresponding Transaction Identifier Client Transaction ID-1, according to Transaction Identifier response message is transmitted to corresponding RTSP Client, and message is exemplified below:
P-＞C：RTSP/1.0?200?OK
CSeq：0
Public：DESCRIBE，SETUP，TEARDOWN，PLAY，PAUSE
Equally, when described RTSP message is other transaction message such as DESCRIBE message, also can handle, just repeat no more here by above-mentioned flow process.
The embodiment of the invention provides another kind of real-time streaming protocol to act on behalf of the specific implementation method that RTSP Proxy transmits data, by receiving the real-time streaming protocol RTSP request from a plurality of real-time streaming protocol client RTSP Client; According to described RTSP request, generate the Transaction Identifier Client Transaction ID of described real-time streaming protocol client and the incidence relation table of service identification Service ID; The RTSP request of carrying described Service ID is transmitted to real-time streaming protocol server RTSP Server; By receiving the RTSP response message of described RTSP Server, and be index with the described Service ID that carries in the RTSP response message, search described incidence relation table, described RTSP response message is transmitted to the described RTSP Client corresponding with described Client Transaction ID, solve RTSPProxy and inserted a plurality of RTSP protocol clients, the response message that RTSP Proxy can't return RTSP Server sends to corresponding request end RTSP Client, thereby cause client can't receive the problem of this response message, the perfect function of RTSP Proxy has been simplified the handling process of RTSP Proxy.
As shown in Figure 8, Fig. 8 acts on behalf of the structure drawing of device that RTSP Proxy transmits data for a kind of real-time streaming protocol in the embodiment of the invention, comprising:
First receiving element 800 is used to receive the first real-time streaming protocol RTSP request from a plurality of real-time streaming protocol clients;
The incidence relation table generates unit 802, is used for for described real-time streaming protocol client is distributed described client identification and service identification, and generating the incidence relation table of described client identification and service identification according to described RTSP request;
First transmitting element 804, the RTSP request that is used for carrying described service identification is transmitted to the real-time streaming protocol server;
Second receiving element 806 is used to receive a RTSP response message of described real-time streaming protocol server, carries described service identification in the described RTSP response message;
Second transmitting element 808, the service identification that is used for carrying with the RTSP response message that described second receiving element receives is an index, obtain client identification by searching described incidence relation table, described RTSP response message is transmitted to the real-time streaming protocol client corresponding with described client identification.
Wherein, when described client identification is described client transaction sign, described incidence relation table generates unit 802 and specifically is used to described real-time streaming protocol client to distribute client transaction sign and service identification, and generates the incidence relation table of described client transaction sign and described service identification.
When described client identification was described client-side session sign, described incidence relation table generated the unit and specifically is used to described real-time streaming protocol client to distribute described client-side session sign and service identification; Generating described client session sign, service identification and described real-time streaming protocol server is the incidence relation table of the server session sign of described real-time streaming protocol client distribution, and wherein said server session sign is by receiving the RTSP response message acquisition of described real-time streaming protocol server.
And when described client identification was described client-side session sign, described device also comprised:
Described first receiving element 800 also is used to receive the second real-time streaming protocol RTSP request from described real-time streaming protocol client, carries described client session sign in the described request;
Acquiring unit 810 is used for being designated index with the described client session of described first receiving element, crosses and searches described incidence relation table, obtains described server session sign and the service identification corresponding with described client;
Described first transmitting element 804, also be used for described server session sign and service identification are carried at described the 2nd RTSP request, be transmitted to and the corresponding real-time streaming protocol server of described server session sign, make described real-time streaming protocol server carry out session and handle according to described server session sign;
Described second receiving element 806 also is used to receive the 2nd RTSP response message that described real-time streaming protocol server returns, and carries described service identification in described the 2nd RTSP response message;
Described second transmitting element 808, the described Transaction Identifier that also is used for receiving with described second receiving element is an index, obtain and described service identification clients corresponding sign by searching described incidence relation table, described the 2nd RTSP response message is transmitted to the described real-time streaming protocol client corresponding with described client identification.
Need to prove: this real-time streaming protocol is acted on behalf of each module in the device that RTSP Proxy transmits data and can be built in a kind of real-time streaming protocol and act on behalf of among the RTSP Proxy, also can be independent device, the reciprocal process of the each several part of this device can just repeat no more here referring to the description to the embodiment of Fig. 3 and Fig. 6.
The embodiment of the invention provides a kind of real-time streaming protocol to act on behalf of the device that RTSP Proxy transmits data, install the mutual mutually of each module by this, the RTSP response message that the RTSP server is returned is transmitted to the described RTSP Client corresponding with described client identification by the incidence relation table of described real-time streaming protocol client identification and service identification, solved the real-time streaming protocol client that response message belonged to that the real-time streaming protocol agency can't the Differentiated Services device returns, thereby cause client can't receive the problem of this response message, the perfect function of RTSP Proxy has been simplified real-time streaming protocol agency's handling process.
As shown in Figure 9, Fig. 9 acts on behalf of the system construction drawing that RTSP Proxy transmits data for a kind of real-time streaming protocol in the embodiment of the invention, comprising:
A plurality of real-time streaming protocol client RTSP Client902, real-time streaming protocol are acted on behalf of RTSPProxy904 and real-time streaming protocol server RTSP Server906;
Described RTSP Client902 is connected with described real-time streaming protocol agency, is used to send the first real-time streaming protocol RTSP and asks to described real-time streaming protocol agency, and receive the RTSP response message that described real-time streaming protocol agency returns;
Described real-time streaming protocol is acted on behalf of RTSP Proxy904, is connected with described real-time streaming protocol server with described real-time streaming protocol client respectively, is used to receive the first real-time streaming protocol RTSP request from a plurality of real-time streaming protocol clients; According to described RTSP request,, and generate the incidence relation table of described real-time streaming protocol client identification and service identification for described real-time streaming protocol client is distributed described client identification and professional mark; The RTSP request of carrying described service identification is transmitted to the real-time streaming protocol server; And receive the RTSP response message of described server, carry described service identification in the described RTSP response message, and be index with described service identification, by searching the described client identification that described incidence relation table is attained at described service identification correspondence, described RTSP response message is transmitted to the described real-time streaming protocol client corresponding with described client identification;
Described real-time streaming protocol server RTSP Server906, be connected with described real-time streaming protocol agency, be used to receive the RTSP request that described real-time streaming protocol agency sends, according to different described service identifications, for described real-time streaming protocol client is set up different sessions, and return described RTSP response message and give described real-time streaming protocol agency, wherein, carry described service identification in the described RTSP response message.
When described client identification is the client session sign,
Described real-time streaming protocol agency specifically is used for for described real-time streaming protocol client is distributed described client identification and service identification, and generating the incidence relation table of described client identification and service identification according to described RTSP request;
It is the described client described server session sign of distributing and the incidence relation table of described service identification that described real-time streaming protocol server also is used to obtain and store described server, and wherein, described service identification obtains from described RTSP request message.
When described client identification is described client session sign,
Described real-time streaming protocol client also is used to send the second real-time streaming protocol RTSP and asks to carry described client session sign in the described request to described real-time streaming protocol agency, and receives the 2nd RTSP response that described real-time streaming protocol agency returns;
Described real-time streaming protocol agency, also be used to receive described the 2nd RTSP request, described client session is designated index, cross and search described incidence relation table, obtain described server session sign and the service identification corresponding with the client session sign, described server session sign and service identification are carried in described the 2nd RTSP request, are transmitted to and the corresponding real-time streaming protocol server of described server session sign; And receive the 2nd RTSP response message that described real-time streaming protocol server returns, carry described service identification in described the 2nd RTSP response message; With described service identification is index, obtains and described service identification clients corresponding session identification by searching described incidence relation table, and described RTSP response message is transmitted to and the corresponding described real-time streaming protocol client of described client session sign;
Described real-time streaming protocol server, also be used to receive described the 2nd RTSP request that described real-time streaming protocol agency transmits, according to the described server session sign of carrying in the described request described session is handled, and return the 2nd RTSP response message and give described real-time streaming protocol agency, carry described service identification in described the 2nd RTSP response message.
When institute's client identification is described client transaction sign,
Described real-time streaming protocol agency specifically is used for according to described RTSP request, for described real-time streaming protocol client is distributed client transaction sign and service identification, and generates the incidence relation table of described client transaction sign and described service identification.
The embodiment of the invention provides a kind of real-time streaming protocol to act on behalf of the system that RTSP Proxy transmits data, by the RTSP Client in the system, mutually mutual between RTSP Proxy and the RTSP Server, the RTSP response message that the RTSP server is returned is transmitted to the described RTSP Client corresponding with described client identification by the incidence relation table of described real-time streaming protocol client identification and service identification D, solved the real-time streaming protocol client that response message belonged to that the real-time streaming protocol agency can't the Differentiated Services device returns, thereby cause client can't receive the problem of this response message, the perfect function of RTSPProxy has been simplified real-time streaming protocol agency's handling process.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can come or realize by hardware by the mode that software adds essential general hardware platform, based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (12)
1. the method for real-time streaming protocol agency forwarding data is characterized in that, comprising:
Reception is from the first real-time streaming protocol RTSP request of a plurality of real-time streaming protocol clients;
According to described RTSP request,, and generate the incidence relation table of described client identification and service identification for described real-time streaming protocol client is distributed client identification and service identification;
The RTSP request of carrying described service identification is transmitted to the real-time streaming protocol server;
Receive a RTSP response message of described real-time streaming protocol server, carry described service identification in the described RTSP response message, and be index with described service identification, obtain client identification by searching described incidence relation table, a described RTSP response message is transmitted to the real-time streaming protocol client corresponding with described client identification.
2. method according to claim 1, it is characterized in that, when described client identification is client transaction when sign, describedly distribute described client identification and service identification, and the incidence relation table that generates described client identification and service identification comprises specifically for described real-time streaming protocol client:
For described real-time streaming protocol client is distributed client transaction sign and service identification, and generate the incidence relation table of described client transaction sign and described service identification.
3. method according to claim 1, it is characterized in that, when described client identification is described client-side session sign, describedly distribute described client identification and service identification, and the incidence relation table that generates described client identification and service identification comprises specifically for described real-time streaming protocol client:
For described real-time streaming protocol client is distributed described client-side session sign and service identification;
Generating described client session sign, service identification and described real-time streaming protocol server is the incidence relation table of the server session sign of described real-time streaming protocol client distribution, and wherein said server session sign is by receiving the RTSP response message acquisition of described real-time streaming protocol server.
4. method according to claim 3 is characterized in that, described method also comprises:
Reception is carried described client session sign from the second real-time streaming protocol RTSP request of described real-time streaming protocol client in the described request;
Be designated index with described client session, cross and search described incidence relation table, obtain described server session sign and the service identification corresponding with described client;
Described server session sign and service identification are carried in described the 2nd RTSP request, be transmitted to and the corresponding real-time streaming protocol server of described server session sign, make described real-time streaming protocol server carry out session and handle according to described server session sign;
Receive the 2nd RTSP response message that described real-time streaming protocol server returns, carry described service identification in described the 2nd RTSP response message, and be index with described service identification, obtain and described service identification clients corresponding sign by searching described incidence relation table, described the 2nd RTSP response message is transmitted to the described real-time streaming protocol client corresponding with described client identification.
5. the device of real-time streaming protocol agency forwarding data is characterized in that, comprising:
First receiving element is used to receive the first real-time streaming protocol RTSP request from a plurality of real-time streaming protocol clients;
The incidence relation table generates the unit, is used for for described real-time streaming protocol client is distributed described client identification and service identification, and generating the incidence relation table of described client identification and service identification according to described RTSP request;
First transmitting element, the RTSP request that is used for carrying described service identification is transmitted to the real-time streaming protocol server;
Second receiving element is used to receive a RTSP response message of described real-time streaming protocol server, carries described service identification in the described RTSP response message;
Second transmitting element, the service identification that is used for carrying with the RTSP response message that described second receiving element receives is an index, obtain client identification by searching described incidence relation table, described RTSP response message is transmitted to the real-time streaming protocol client corresponding with described client identification.
6. device according to claim 5, it is characterized in that, when institute's family end is designated described client transaction sign, described incidence relation table generates the unit and specifically is used to described real-time streaming protocol client to distribute client transaction sign and service identification, and generates the incidence relation table of described client transaction sign and described service identification.
7. device according to claim 5, it is characterized in that, when described client identification was described client-side session sign, described incidence relation table generated the unit and specifically is used to described real-time streaming protocol client to distribute described client-side session sign and service identification; Generating described client session sign, service identification and described real-time streaming protocol server is the incidence relation table of the server session sign of described real-time streaming protocol client distribution, and wherein said server session sign is by receiving the RTSP response message acquisition of described real-time streaming protocol server.
8. device according to claim 7 is characterized in that, when described client identification was described client-side session sign, described device also comprised:
Described first receiving element also is used to receive the second real-time streaming protocol RTSP request from described real-time streaming protocol client, carries described client session sign in the described request;
Acquiring unit is used for being designated index with the described client session of described first receiving element, crosses and searches described incidence relation table, obtains described server session sign and the service identification corresponding with described client;
Described first transmitting element, also be used for described server session sign and service identification are carried at described the 2nd RTSP request, be transmitted to and the corresponding real-time streaming protocol server of described server session sign, make described real-time streaming protocol server carry out session and handle according to described server session sign;
Described second receiving element also is used to receive the 2nd RTSP response message that described real-time streaming protocol server returns, and carries described service identification in described the 2nd RTSP response message;
Described second transmitting element, the described service identification that also is used for receiving with described second receiving element is an index, obtain and described service identification clients corresponding sign by searching described incidence relation table, described the 2nd RTSP response message is transmitted to the described real-time streaming protocol client corresponding with described client identification.
9. the system of real-time streaming protocol agency forwarding data is characterized in that, comprising: a plurality of real-time streaming protocol clients, real-time streaming protocol agency and real-time streaming protocol server;
Described real-time streaming protocol client is connected with described real-time streaming protocol agency, is used to send the first real-time streaming protocol RTSP and asks to described real-time streaming protocol agency, and receive the RTSP response message that described real-time streaming protocol agency returns;
Described real-time streaming protocol agency is connected with described real-time streaming protocol server with described real-time streaming protocol client respectively, is used to receive the first real-time streaming protocol RTSP request from a plurality of real-time streaming protocol clients; According to described RTSP request,, and generate the incidence relation table of described real-time streaming protocol client identification and service identification for described real-time streaming protocol client is distributed described client identification and professional mark; The RTSP request of carrying described service identification is transmitted to the real-time streaming protocol server; And receive the RTSP response message of described server, carry described service identification in the described RTSP response message, and be index with described service identification, by searching the described client identification that described incidence relation table is attained at described service identification correspondence, described RTSP response message is transmitted to the described real-time streaming protocol client corresponding with described client identification;
Described real-time streaming protocol server, be connected with described real-time streaming protocol agency, be used to receive the RTSP request that described real-time streaming protocol agency sends, according to different described service identifications, for described real-time streaming protocol client is set up different sessions, and return described RTSP response message and give described real-time streaming protocol agency, wherein, carry described service identification in the described RTSP response message.
10. system according to claim 9 is characterized in that, when described client identification is the client session sign,
Described real-time streaming protocol agency specifically is used for for described real-time streaming protocol client is distributed described client identification and service identification, and generating the incidence relation table of described client identification and service identification according to described RTSP request;
It is the described client described server session sign of distributing and the incidence relation table of described service identification that described real-time streaming protocol server also is used to obtain and store described server, and wherein, described service identification obtains from described RTSP request message.
11. system according to claim 9 is characterized in that, when described client identification is described client session sign,
Described real-time streaming protocol client also is used to send the second real-time streaming protocol RTSP and asks to carry described client session sign in the described request to described real-time streaming protocol agency, and receives the 2nd RTSP response that described real-time streaming protocol agency returns;
Described real-time streaming protocol agency, also be used to receive described the 2nd RTSP request, described client session is designated index, cross and search described incidence relation table, obtain described server session sign and the service identification corresponding with the client session sign, described server session sign and service identification are carried in described the 2nd RTSP request, are transmitted to and the corresponding real-time streaming protocol server of described server session sign; And receive the 2nd RTSP response message that described real-time streaming protocol server returns, carry described service identification in described the 2nd RTSP response message; With described service identification is index, obtains and described service identification clients corresponding session identification by searching described incidence relation table, and described RTSP response message is transmitted to and the corresponding described real-time streaming protocol client of described client session sign;
Described real-time streaming protocol server, also be used to receive described the 2nd RTSP request that described real-time streaming protocol agency transmits, according to the described server session sign of carrying in the described request described session is handled, and return the 2nd RTSP response message and give described real-time streaming protocol agency, carry described service identification in described the 2nd RTSP response message.
12. system according to claim 9 is characterized in that, when institute's client identification is described client transaction sign,
Described real-time streaming protocol agency specifically is used for according to described RTSP request, for described real-time streaming protocol client is distributed client transaction sign and service identification, and generates the incidence relation table of described client transaction sign and described service identification.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101095582A CN101989978A (en) | 2009-08-05 | 2009-08-05 | Method, device and system for forwarding data by real time streaming protocol (RTSP) proxy |
| PCT/CN2010/075535 WO2011015111A1 (en) | 2009-08-05 | 2010-07-29 | Method, device and system for real time streaming protocol proxy forwarding data |
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| CN2009101095582A CN101989978A (en) | 2009-08-05 | 2009-08-05 | Method, device and system for forwarding data by real time streaming protocol (RTSP) proxy |
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| CN2009101095582A Pending CN101989978A (en) | 2009-08-05 | 2009-08-05 | Method, device and system for forwarding data by real time streaming protocol (RTSP) proxy |
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| CN109067860A (en) * | 2018-07-20 | 2018-12-21 | 山东中创软件工程股份有限公司 | A kind of mobile terminal message treatment method and relevant apparatus |
| CN111988205A (en) * | 2019-05-24 | 2020-11-24 | 上海诺基亚贝尔股份有限公司 | Method for serving remote physical equipment and core proxy equipment |
| CN114244908A (en) * | 2021-11-05 | 2022-03-25 | 浙江蓝卓工业互联网信息技术有限公司 | Cross-domain RTSP streaming media transmission method |
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| WO2011015111A1 (en) | 2011-02-10 |
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Application publication date: 20110323 |