CN1984137B - Method for determining header domain supported by server at session initial protocol terminal - Google Patents
Method for determining header domain supported by server at session initial protocol terminal Download PDFInfo
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- CN1984137B CN1984137B CN200610060256A CN200610060256A CN1984137B CN 1984137 B CN1984137 B CN 1984137B CN 200610060256 A CN200610060256 A CN 200610060256A CN 200610060256 A CN200610060256 A CN 200610060256A CN 1984137 B CN1984137 B CN 1984137B
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Abstract
This invention discloses a method that one kind conversation initial protocol terminal confirming server supports first domain. The step includes: set the inquiry mark to conversation initial protocol information that the conversation initial protocol terminal sends to conversation initial protocol server. When conversation initial protocol server receives this information, it will put its supporting first domain information to conversation initial protocol terminal response information. Then it sends out this response information. The technology scheme enhances the compatibility of SIP equipment and the user's specific business. It is helpful to improve users' operation efficiency and quality.
Description
Technical field
The present invention relates to the internet multimedia technical field, be specifically related to the method for a kind of SIP (SessionInitiation Protocol, session initiation protocol) terminal check header field that server is supported.
Background technology
SIP is organized in proposed in 1999 one in IP network by IETF (Internet Engineering Task Force), particularly in the network environment of a kind of like this structure of Internet, realizes a kind of signaling protocol that real-time communication is used.Session Initiation Protocol is widely used in foundation, revises and stop the Multimedia session (Session) of IP based network, and so-called session just is meant the exchanges data between the user.In the application based on Session Initiation Protocol, each session can be various dissimilar contents, can be common text data, also can be audio frequency, video data through digitized processing, also has IM, Presence and multimedia conferencing etc.The Internet standard that is based on Session Initiation Protocol designs, and belongs to the part of Internet multimedia framework, cooperates with existing Internet agreement and finishes multimedia service.Standard as an IETF proposition, Session Initiation Protocol has been used for reference the Internet agreement of other various extensive existence to a great extent, as HTTP (HTML (Hypertext Markup Language)), SMTP (Simple Mail Transfer protocol) etc., the text based coded system that the same SIP with these agreements also adopts, this also is that Session Initiation Protocol is compared one of maximum characteristics with other existing standards of video communication field.Session Initiation Protocol has flexibly, the easy characteristics of expansion, since the Session Initiation Protocol standardization, has been subjected to the extensive concern of industry, is called as one of the most promising agreement.
3GPP and 3GPP2 are international 3G (Third Generation) Moblie tissues, are responsible for the business relevant with following 3G network, the research of aspects such as technology and standardization effort.Because the advantage that had of Session Initiation Protocol itself, this agreement among the IMS that especially defines (IP Multimedia Subsystem, IP Multimedia System), has consequence in 3GPPR5 in the middle of the 3G network in 3GPP and 3GPP2 future.IMS is the center that the 3G core network provides end-to-end multimedia service and cluster multimedia service, in 3GPP R6 version, IMS has been defined as supporting the multimedia service core net of all IP Access Networks, can support any mobile or fixing, wired or wireless IP-CAN (IP Connectivity Access Networks), comprising W-CDMA, CDMA2000, Ethernet, xDSL and Wireless LAN or the like.Employed Session Initiation Protocol is a benchmark with the RFC 3261 of IEFT tissue issue in the middle of the IMS.IETF and 3GPP and 3GPP2 carried out the expansion of part at the deficiency of RFC 3261, and the Session Initiation Protocol after will expanding are used in the middle of the IMS after the requirement of concrete business and network is analyzed.The effect that SIP is born in IMS mainly is the controlled function of Multimedia session, comprises real-time multimedia end to end, video tour, download etc., and make IMS can realize different Access Networks smoothly, the intercommunication between the different business.
Because flexibly, the advantage of aspect such as can expand, Session Initiation Protocol will have more widely in future to be used.Simultaneously Session Initiation Protocol also will be along with the continuous increase of using, constantly expand according to the demand of business, thus increasingly sophisticated inevitably and abundant.In order to realize the normal utilization of Session Initiation Protocol, require each terminal with effectively linking up and exchange at the expansion content of Session Initiation Protocol between each sip server, that is to say that terminal should understand targetedly by the Session Initiation Protocol related expanding that certain mechanism is supported sip server or other SIP entity, and then on this basis, on purpose carry out specific transactions.
In the prior art, receive client UA (User Agent at server, the user agent) after the message of sending, can handle sip message line by line according to interpreter, when running into unsupported header field information, can ignore this header field, perhaps return an errored response, the relevant information that this header field comprised will all be lost.
Prior art does not provide a kind of mechanism of confirming server institute retrieving head field type, just because of such reason, the SIP client just can't judge also that before commencing business this business whether can trouble-free operation on sip server, thereby had reduced professional efficient and quality of carrying out.
Along with carrying out of Session Initiation Protocol related service, application on the sip server will get more and more, the header field of expansion also can increase gradually, and complexity also can increase gradually, in this case, if server can greatly improve the compatibility and the professional specific aim of carrying out of Session Initiation Protocol at the support situation of different professional clear and definite its header fields.
Sip request message (Request) comprises three elements: request row, header field, message body; Sip response message (Response) comprises three elements: statusline, header field, message body.Request row and header field have defined the essence of calling out according to business, address and protocol characteristic, and message body is independent of Session Initiation Protocol and can comprises any content.
SIP has defined following signaling message:
INVITE (invitation signaling message): be used to invite the user to add calling.
BYE (termination signaling message): be used to stop the calling between two users that call out.
OPTIONS (detecting signaling message): be used to ask information about server-capabilities.
CANCEL: be used to cancel and sent but the not final request that finishes;
ACK: be used to confirm that client computer has received the final response to INVITE.
REGISTER: be used to provide the mapping of address resolution, allow server know other user's position.
INFO: be used for the session signaling.
Be the example of several concrete SIP signaling messages below:
1, INVITE:
INVITE?sip：bob@biloxi.com?SIP/2.0
Via：SIP/2.0/UDP?pc33.atlanta.com；branch＝z9hG4bKkjshdyff
To：Bob<sip:bob@biloxi.com>
From：Alice<sip:alice@atlanta.com>；tag＝88aja8x
Max-Forwards：70
Call-ID：987asjd97y7atg
Cseq：986759INVITE
2,200OK message (being used to confirm INVITE):
SIP/2.0I200OK
Via：SIP/2.0/UDP?pc33.atlanta.com；branch＝z9hG4bKkjshdyff
To：Bob<sip:bob@biloxi.com>；branch＝z9hG4bKkjshdyaa
From：Alice<sip:alice@atlanta.com>；tag＝88sja8x
Max-Forwards：70
Call-ID：987asjd97y7atg
Cseq：986759INVITE
3, ACK message (being used to confirm 200OK message):
ACK?sip：bob@biloxi.com?SIP/2.0
Via：SIP/2.0/UDP?pc33.atlanta.com；branch＝z9hG4bKkjshdyff
To：Bob<sip:bob@biloxi.com>；tag＝99sa0xk
From：Alice<sip:alice@atlanta.com>；tag＝88sja8x
Max-Forwards：70
Call-ID：987asjd97y7atg
Cseq：986759ACK
From top example we as can be seen, the SIP signaling message must comprise 6 following header fields:
Via: the path of having described the request message process.
From: the source that request has been described.
To: the reciever that request has been described.
Max-Forwards: be transferred to counting or the max-forwards number of times of its destination jump as limit request.
Call-ID: the unique identification that is used to distinguish different sessions.
CSeq: be used for distinguishing affairs in same session.
Summary of the invention
The technical problem to be solved in the present invention provides the method that a kind of sip terminal is confirmed header field that server is supported, overcome the header field type that prior art can't confirm that before the SIP client is commenced business server is supported, thereby reduced the professional efficient of carrying out and the shortcoming of quality.
The present invention adopts following technical scheme:
A kind of conversation beginning protocol terminal is confirmed the method for header field that server is supported, comprise step: the inquiry sign is set in conversation beginning protocol terminal sends to the session initiation protocol signaling message of session initial protocol server, after session initial protocol server is received this signaling message, according to the inquiry sign its header field information of supporting is inserted in the response signaling message that is ready for sending to conversation beginning protocol terminal, and sent this response signaling message.
Described conversation beginning protocol terminal is confirmed the method for header field that server is supported, wherein: use and detect signaling message and inquire about the header field of its support, comprise step to session initial protocol server:
A1, in conversation beginning protocol terminal is ready for sending support header field to the detecting signaling message of session initial protocol server, fill in the inquiry sign;
A2, conversation beginning protocol terminal send the detecting signaling message to session initial protocol server;
After A3, session initial protocol server are received the detecting signaling message, in the permission header field that is ready for sending to the response signaling message of conversation beginning protocol terminal, enumerate the title of the header field of its support;
A4, session initial protocol server send this response signaling message to conversation beginning protocol terminal.
Described conversation beginning protocol terminal is confirmed the method for header field that server is supported, wherein: in session initiation protocol, increase the inquiry signaling message that is used for the header field inquiry, use the inquiry signaling message to inquire about the header field of its support, comprise step to session initial protocol server:
B1, in conversation beginning protocol terminal is ready for sending support header field to the inquiry signaling message of session initial protocol server, fill in the inquiry sign;
B2, conversation beginning protocol terminal send the inquiry signaling message to session initial protocol server;
After B3, session initial protocol server are received the inquiry signaling message, in the permission header field that is ready for sending to the response signaling message of conversation beginning protocol terminal, enumerate the title of the header field of its support;
B4, session initial protocol server send this response signaling message to conversation beginning protocol terminal.
Described conversation beginning protocol terminal is confirmed the method for header field that server is supported, wherein: described inquiry sign comprises the option-tag of whole header fields that sign inquiry session initial protocol server is supported and the option-tag of the specific header field that sign inquiry session initial protocol server is supported.
Described conversation beginning protocol terminal is confirmed the method for header field that server is supported, wherein said steps A 1 comprises step: in conversation beginning protocol terminal is ready for sending support header field to the detecting signaling message of session initial protocol server, fill in the option-tag of whole header fields that sign inquiry session initial protocol server supported; Perhaps fill in the option-tag of the specific header field that sign inquiry session initial protocol server supported, in the permission header field of detecting signaling message, enumerate the title of specific header field simultaneously.
Described conversation beginning protocol terminal is confirmed the method for header field that server is supported, wherein said steps A 3 comprises step: after session initial protocol server is received the detecting signaling message, option-tag as if the whole header fields that find sign inquiry session initial protocol server to be supported, then in the permission header field that is ready for sending to the response signaling message of conversation beginning protocol terminal, enumerate all titles of the header field of its supports.
Described conversation beginning protocol terminal is confirmed the method for header field that server is supported, wherein said steps A 3 comprises step: after session initial protocol server is received the detecting signaling message, option-tag as if the specific header field that finds sign inquiry session initial protocol server to be supported, then in the specific header field title of from the permission header field of detecting signaling message, enumerating, select the header field title that it is supported, and write it and be ready for sending in the permission header field to the response signaling message of conversation beginning protocol terminal.
Described conversation beginning protocol terminal is confirmed the method for header field that server is supported, wherein said step B1 comprises step: in conversation beginning protocol terminal is ready for sending support header field to the inquiry signaling message of session initial protocol server, fill in the option-tag of whole header fields that sign inquiry session initial protocol server supported; Perhaps fill in the option-tag of the specific header field that sign inquiry session initial protocol server supported, in the permission header field of inquiry signaling message, enumerate the title of specific header field simultaneously.
Described conversation beginning protocol terminal is confirmed the method for header field that server is supported, wherein said step B3 comprises step: after session initial protocol server is received the inquiry signaling message, option-tag as if the whole header fields that find sign inquiry session initial protocol server to be supported, then in the permission header field that is ready for sending to the response signaling message of conversation beginning protocol terminal, enumerate all titles of the header field of its supports.
Described conversation beginning protocol terminal is confirmed the method for header field that server is supported, wherein said step B3 comprises step: after session initial protocol server is received the inquiry signaling message, option-tag as if the specific header field that finds sign inquiry session initial protocol server to be supported, then in the specific header field title of from the permission header field of inquiry signaling message, enumerating, select the header field title that it is supported, and write it and be ready for sending in the permission header field to the response signaling message of conversation beginning protocol terminal.
Technical scheme of the present invention is in response to the different application environment requirement, use the detecting signaling message or use the inquiry signaling message that is used for the header field inquiry that increases, inquire about the header field of its support to session initial protocol server, the technological means that makes things convenient for of inquiry header field that sip server is supported is provided for the user who uses Session Initiation Protocol; The option-tag of the sign inquiry session header field that initial protocol server is supported that uses in the technical scheme, comprise the option-tag of whole header fields that sign inquiry session initial protocol server is supported and the option-tag of the specific header field that sign inquiry session initial protocol server is supported; Guaranteed the flexibility of inquiry; Technical scheme of the present invention has strengthened the SIP compatibility of apparatus, has improved the specific aim that the user commences business, and helps to improve efficient and the quality that the user commences business.
Description of drawings
The present invention includes following accompanying drawing:
Fig. 1 is that the present invention utilizes the OPTIONS signaling message of expansion to realize the flow chart of header field inquiry;
Fig. 2 is that the present invention utilizes the QUERY signaling message to realize the flow chart of header field inquiry.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail:
Session Initiation Protocol has the characteristic of easy expansion, and for carrying out smoothly of different business, IETF has carried out a large amount of expansions to the SIP header field in the Session Initiation Protocol evolution.Sip server for the consideration of each side and the restriction of condition, may not supported the header field of all expansions in implementation procedure.The SIP client is before realizing related service, inquire about accordingly by the header field that sip server is supported, commence business at its different header fields of supporting, just can improve the compatible and professional specific aim of carrying out of sip server, avoid the wasting of resources.
Confirm the current situation of supporting header field of sip server in order to make sip terminal, the present invention adopts dual mode to realize goal of the invention, the one, existing OPTIONS signaling message is expanded, inquire about the situation of header field that sip server is supported by the OPTIONS signaling message (detecting signaling message) of expansion; The 2nd, construct new QUERY signaling message (inquiry signaling message), know the support situation of sip server by the QUERY signaling message to the SIP header field.
In order to realize the inquiry of SIP header field, the present invention expands two option-tags (option-tag) in Session Initiation Protocol, one is queryall (inquiring about whole header field option-tag), be the option-tags of whole header fields of being supported of sign inquiry session initial protocol server, another is querysome (a query portion header field option-tag), is the option-tags of the specific header field supported of sign inquiry session initial protocol server.In query script, comprise option-tag queryall or option-tag querysome selects to inquire about whole header fields or the specific header field of part that sip server is supported by Supported header field (support header field).
1, use the OPTIONS signaling message of expansion to inquire about:
As shown in Figure 1, when the header field that OPTIONS signaling message (detecting signaling message) the inquiry sip server that uses expansion is supported, in sip terminal is ready for sending Supported header field (permission header field) to the OPTIONS signaling message of sip server, fill in the option-tag queryall of whole header fields that sign inquiry sip server supports; Perhaps fill in the option-tag querysome of the specific header field that sign inquiry sip server supports, in the Allow header field (permission header field) of the OPTIONS signaling message of expansion, enumerate the title of specific header field simultaneously; Sip terminal sends the OPTIONS signaling message of expansion to sip server; After sip server is received the OPTIONS signaling message that sip terminal sends,, then in the Allow header field that is ready for sending to the response signaling message of sip terminal, enumerate all titles of the header field of its supports if find option-tag queryall; If find option-tag querysome, then in the specific header field title of from the Allow header field of OPTIONS signaling message, enumerating, select the header field title that it is supported, and write it and be ready for sending in the Allow header field to the response signaling message of sip terminal; Sip server sends this response signaling message to conversation beginning protocol terminal.
Be the specific embodiment that in the OPTIONS signaling message of expansion, uses option-tag queryall below:
OPTIONS?sip：carol@chicago.com?SIP/2.0
Via：SIP/2.0/UDP?pc33.atlanta.com；branch＝z9hG4bKhjhs8ass877
Max-Forwards：70
To：<sip:carol@chicago.com>
From：Alice<sip:alice@atlanta.com>；tag＝1928301774
Call-ID：a84b4c76e66710
CSeq：63104OPTIONS
Contact：<sip:alice@pc33.atlanta.com>
Accept：application/sdp
Supported：queryall
Allow：
Content-Length：0
SIP/2.0200OK
Via：SIP/2.0/UDP?pc33.atlanta.com；branch＝z9hG4bKhjhs8ass877；received＝192.0.2.4
To：<sip:carol@chicago.com>；tag＝93810874
From：Alice<sip:alice@atlanta.com>；tag＝1928301774
Call-ID：a84b4c76e66710
CSeq：63104OPTIONS
Contact：<sip:carol@chicago.com>
Contact：<mailto:carol@chicago.com>
Allow：path，P-Access-Network-Info，Security-Client，Rack，PrivacyAccept：application/sdp
Accept-Encoding：gzip
Accept-Language：en
Supported：queryall
Content-Type：application/sdp
Content-Length：274
In the above embodiments, the Supported header field that sip terminal sends in the OPTIONS signaling message of expansion of sip server comprises option-tag queryall, require sip server to provide the header field of all its supports, sip server is enumerated the header field of all its supports: path in the Allow header field of 200 message of response, P-Access-Network-Info, Security-Client, Rack, Privacy
The specific header field that sip server is supported words of inquiring about if desired, then adopt the mode of checking, in the middle of the Allow header field of the OPTIONS signaling message of expanding, list the header field title that needs inquiry, and this OPTIONS signaling message sent to sip server, the sip server end is by judging, the header field title of himself supporting in the middle of the header field title that the Allow header field of OPTIONS signaling message of expansion is listed is inserted in the Allow header field of 200OK message and is returned to sip terminal, thereby realizes the inquiry of specific header field.
Be the specific embodiment that in the OPTIONS signaling message of expansion, uses option-tag querysome below:
OPTIONS?sip：carol@chicago.com?SIP/2.0
Via：SIP/2.0/UDP?pc33.atlanta.com；branch＝z9hG4bKhjhs8ass877
Max-Forwards：70
To：<sip:carol@chicago.com>
From：Alice<sip:alice@atlanta.com>；tag＝1928301774
Call-ID：a84b4c76e66710
CSeq：63104OPTIONS
Contact：<sip:alice@pc33.atlanta.com>
Accept：application/sdp
Supported：querysome
Allow：path，P-Access-Network-Info，Security-Client，Rack，Privacy
Content-Length：0
SIP/2.0200OK
Via：SIP/2.0/UDP?pc33.atlanta.com；branch＝z9hG4bKhjhs8ass877；received＝192.0.2.4
To：<sip:carol@chicago.com>；tag＝93810874
From：Alice<sip:alice@atlanta.com>；tag＝1928301774
Call-ID：a84b4c76e66710
CSeq：63104OPTIONS
Contact：<sip:carol@chicago.com>
Contact：<mailto:carol@chicago.com>
Allow：path，P-Access-Network-Info，Security-Client，Rack
Accept：application/sdp
Accept-Encoding：gzip
Accept-Language：en
Supported：querysome
Content-Type：application/sdp
Content-Length：274
In the above embodiments, sip terminal is at first constructed the OPTIONS signaling message of the expansion of inquiry header field, this signaling message is overseas except that comprising general OPTIONS message relevant header, also comprise the Supported header field, the Allow header field, the desired header field query type of OPTIONS signaling message that indicates this expansion by option-tag queryhsome in the middle of the Supported header field is the inquiry of part header field, and in the middle of the Allow header field, list the header field title that the expectation sip server is confirmed: path, P-Access-Network-Info, Security-Client, Rack, Privacy
Receive the OPTIONS signaling message of the expansion that sip terminal sends when sip server after, judge the type of this sip terminal inquiry header field, because query type is querysome here, therefore carrying in the middle of the Allow header field of the 200OK message of replying that sip server supports, is again the header field of sip terminal confirmation request simultaneously:
path，P-Access-Network-Info，Security-Client，Rack
Allow header field by top 200OK message can see, Query Result shows that sip server do not support the Privacy header field.
2, use the QUERY signaling message to inquire about:
The OPTIONS signaling message is in the middle of RFC 3261 and early stage RFC agreement, its purposes is proprietaryization already, therefore support the equipment of early protocol for compatibility, the present invention constructs the QUERY signaling message and substitutes the OPTIONS signaling message and realize inquiry work to header field, the QUERY signaling message is the expansion to Session Initiation Protocol, is used for the inquiry to header field that sip server is supported.
As shown in Figure 2, when the header field that uses QUERY signaling message (inquiry signaling message) inquiry sip server to support, in sip terminal is ready for sending Supported header field (permission header field) to the QUERY signaling message of sip server, fill in the option-tag queryall of whole header fields that sign inquiry sip server supports; Perhaps fill in the option-tag querysome of the specific header field that sign inquiry sip server supports, in the Allow of QUERY signaling message header field (permission header field), enumerate the title of specific header field simultaneously; Sip terminal sends the QUERY signaling message to sip server; After sip server is received the QUERY signaling message that sip terminal sends,, then in the Allow header field that is ready for sending to the response signaling message of sip terminal, enumerate all titles of the header field of its supports if find option-tag queryall; If find option-tag querysome, then in the specific header field title of from the Allow header field of QUERY signaling message, enumerating, select the header field title that it is supported, and write it and be ready for sending in the Allow header field to the response signaling message of sip terminal; Sip server sends this response signaling message to conversation beginning protocol terminal.
Be the specific embodiment that in the QUERY signaling message, uses option-tag queryall below:
QUERY?sip：carol@chicago.com?SIP/2.0
Via：SIP/2.0/UDP?pc33.atlanta.com；branch＝z9hG4bKhjhs8ass877
Max-Forwards：70
To：<sip:carol@chicago.com>
From：Alice<sip:alice@atlanta.com>；tag＝1928301774
Call-ID：a84b4c76e66710
CSeq：63104OPTIONS
Contact：<sip:alice@pc33.atlanta.com>
Accept：application/sdp
Supported：queryall
Allow：
Content-Length：0
SIP/2.0200OK
Via：SIP/2.0/UDP?pc33.atlanta.com；branch＝z9hG4bKhjhs8ass877；received＝192.0.2.4
To：<sip:carol@chicago.com>；tag＝93810874
From：Alice<sip:alice@atlanta.com>；tag＝1928301774
Call-ID：a84b4c76e66710
CSeq：63104OPTIONS
Contact：<sip:carol@chicago.com>
Contact：<mailto:carol@chicago.com>
Allow：path，P-Access-Network-Info，Security-Client，Rack，Privacy
Accept：application/sdp
Accept-Encoding：gzip
Accept-Language：en
Supported：queryall
Content-Type：application/sdp
Content-Length：274
In the above embodiments, the Supported header field that sip terminal sends in the QUERY signaling message of sip server comprises option-tag queryall, require sip server to provide the header field of all its supports, the header field of sip server piece all its supports of office in the Allow header field of 200 message of response: path, P-Access-Network-Info, Security-Client, Rack, Privacy
The specific header field that server is supported words of inquiring about if desired, then adopt the mode of checking, in the middle of the Allow of QUERY signaling message header field, list the header field title that needs inquiry, and this information is sent to sip server, server end is by judging, the header field title of himself supporting in the middle of the header field title that the Allow header field of QUERY signaling message is listed is inserted in the Allow header field of 200OK message and is returned to sip terminal, thereby realizes the inquiry of specific header field.
Be the specific embodiment that in the QUERY signaling message, uses option-tag querysome below:
QUERY?sip：carol@chicago.com?SIP/2.0
Via：SIP/2.0/UDP?pc33.atlanta.com；branch＝z9hG4bKhjhs8ass877
Max-Forwards：70
To：<sip:carol@chicago.com>
From：Alice<sip:alice@atlanta.com>；tag＝1928301774
Call-ID：a84b4c76e66710
CSeq：63104OPTIONS
Contact：<sip:alice@pc33.atlanta.com>
Accept：application/sdp
Supported：querysome
Allow：path，P-Access-Network-Info，Security-Client，Rack，Privacy
Content-Length：0
SIP/2.0200OK
Via：SIP/2.0/UDP?pc33.atlanta.com；branch＝z9hG4bKhjhs8ass877；received＝192.0.2.4
To：<sip:carol@chicago.com>；tag＝93810874
From：Alice<sip:alice@atlanta.com>；tag＝1928301774
Call-ID：a84b4c76e66710
CSeq：63104OPTIONS
Contact：<sip:carol@chicago.com>
Contact：<mailto:carol@chicago.com>
Allow：path，P-Access-Network-Info，Security-Client，Rack
Accept：application/sdp
Accept-Encoding：gzip
Accept-Language：en
Supported：querysome
Content-Type：application/sdp
Content-Length：274
In the above embodiments, sip terminal is at first constructed the QUERY signaling message of inquiry header field, this message comprises Supported header field, Allow header field, indicating the desired header field query type of this QUERY signaling message by option-tag queryhsome in the middle of the Supported header field is the inquiry of part header field, and in the middle of the Allow header field, list the header field title that the expectation sip server is confirmed: path, P-Access-Network-Info, Security-Client, Rack, Privacy
When sip server receives the QUERY signaling message that sip terminal sends, judge the type of this sip terminal inquiry header field, because query type is querysome here, therefore carrying in the middle of the Allow header field of the 200OK message of replying that sip server supports, is again the header field of sip terminal confirmation request simultaneously:
path，P-Access-Network-Info，Security-Client，Rack
Allow header field by top 200OK message can see, Query Result shows that sip server do not support the Privacy header field.
Though pass through with reference to the preferred embodiments of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (9)
1. a conversation beginning protocol terminal is confirmed the method for header field that server is supported, it is characterized in that, comprise step: expansion session initiation protocol option-tag is used for as the inquiry sign, described inquiry sign comprises the option-tag of whole header fields that sign inquiry session initial protocol server is supported or the option-tag of the specific header field that sign inquiry session initial protocol server is supported, and in sending to the support header field of session initiation protocol signaling message of session initial protocol server, conversation beginning protocol terminal fills in described inquiry sign, after session initial protocol server is received this signaling message, according to inquiry sign its header field information of supporting is inserted in the permission header field that is ready for sending to the response signaling message of conversation beginning protocol terminal, and sent this response signaling message.
2. conversation beginning protocol terminal according to claim 1 is confirmed the method for header field that server is supported, it is characterized in that, uses to detect signaling message and inquire about the header field of its support to session initial protocol server, comprises step:
A1, in conversation beginning protocol terminal is ready for sending support header field to the detecting signaling message of session initial protocol server, fill in the inquiry sign;
A2, conversation beginning protocol terminal send the detecting signaling message to session initial protocol server;
After A3, session initial protocol server are received the detecting signaling message, in the permission header field that is ready for sending to the response signaling message of conversation beginning protocol terminal, enumerate the title of the header field of its support;
A4, session initial protocol server send this response signaling message to conversation beginning protocol terminal.
3. conversation beginning protocol terminal according to claim 1 is confirmed the method for header field that server is supported, it is characterized in that, in session initiation protocol, increase the inquiry signaling message that is used for the header field inquiry, use the inquiry signaling message to inquire about the header field of its support, comprise step to session initial protocol server:
B1, in conversation beginning protocol terminal is ready for sending support header field to the inquiry signaling message of session initial protocol server, fill in the inquiry sign;
B2, conversation beginning protocol terminal send the inquiry signaling message to session initial protocol server;
After B3, session initial protocol server are received the inquiry signaling message, in the permission header field that is ready for sending to the response signaling message of conversation beginning protocol terminal, enumerate the title of the header field of its support;
B4, session initial protocol server send this response signaling message to conversation beginning protocol terminal.
4. conversation beginning protocol terminal according to claim 2 is confirmed the method for header field that server is supported, it is characterized in that, described steps A 1 comprises step: in conversation beginning protocol terminal is ready for sending support header field to the detecting signaling message of session initial protocol server, fill in the option-tag of whole header fields that sign inquiry session initial protocol server supported; Perhaps fill in the option-tag of the specific header field that sign inquiry session initial protocol server supported, in the permission header field of detecting signaling message, enumerate the title of specific header field simultaneously.
5. conversation beginning protocol terminal according to claim 4 is confirmed the method for header field that server is supported, it is characterized in that, described steps A 3 comprises step: after session initial protocol server is received the detecting signaling message, option-tag as if the whole header fields that find sign inquiry session initial protocol server to be supported, then in the permission header field that is ready for sending to the response signaling message of conversation beginning protocol terminal, enumerate all titles of the header field of its supports.
6. conversation beginning protocol terminal according to claim 5 is confirmed the method for header field that server is supported, it is characterized in that, described steps A 3 comprises step: after session initial protocol server is received the detecting signaling message, option-tag as if the specific header field that finds sign inquiry session initial protocol server to be supported, then in the specific header field title of from the permission header field of detecting signaling message, enumerating, select the header field title that it is supported, and write it and be ready for sending in the permission header field to the response signaling message of conversation beginning protocol terminal.
7. conversation beginning protocol terminal according to claim 3 is confirmed the method for header field that server is supported, it is characterized in that, described step B1 comprises step: in conversation beginning protocol terminal is ready for sending support header field to the inquiry signaling message of session initial protocol server, fill in the option-tag of whole header fields that sign inquiry session initial protocol server supported; Perhaps fill in the option-tag of the specific header field that sign inquiry session initial protocol server supported, in the permission header field of inquiry signaling message, enumerate the name of specific header field simultaneously
8. conversation beginning protocol terminal according to claim 7 is confirmed the method for header field that server is supported, it is characterized in that, described step B3 comprises step: after session initial protocol server is received the inquiry signaling message, option-tag as if the whole header fields that find sign inquiry session initial protocol server to be supported, then in the permission header field that is ready for sending to the response signaling message of conversation beginning protocol terminal, enumerate all titles of the header field of its supports.
9. conversation beginning protocol terminal according to claim 8 is confirmed the method for header field that server is supported, it is characterized in that, described step B3 comprises step: after session initial protocol server is received the inquiry signaling message, option-tag as if the specific header field that finds sign inquiry session initial protocol server to be supported, then in the specific header field title of from the permission header field of inquiry signaling message, enumerating, select the header field title that it is supported, and write it and be ready for sending in the permission header field to the response signaling message of conversation beginning protocol terminal.
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| CN1635764A (en) * | 2003-12-31 | 2005-07-06 | 华为技术有限公司 | A SIP networking mode and method for implementing group message |
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| CN1635764A (en) * | 2003-12-31 | 2005-07-06 | 华为技术有限公司 | A SIP networking mode and method for implementing group message |
Non-Patent Citations (1)
| Title |
|---|
| J. Rosenberg，et al..SIP: Session Initiation Protocol.RFC3261，Network Working Group，IETF.2002,第40页，第66-69页，第158页. * |
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