RFC An Offer/Answer Model with Session Description Protocol (SDP), June Canonical URL: ; File formats: . Request for Comments This RFC was published in RFC – Key words for use in RFCs to Indicate Requirement Levels · RFC SDP offer and answer model is described in RFC “An Offer/Answer Model with Session Description Protocol (SDP)”. The SDP negotiator is represented.
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This enumeration describes SDP negotiation state.
Negotiate local and remote answer. The format name, e. This state rfc 3264 when SDP negotiator has sent our offer to remote and it is waiting for answer.
If the negotiation succeeds i. This state occurs when SDP negotiation has completed, either successfully or not. If remote codec order is preferable, the selected codec will be 8, while if local codec order is preferable, the selected codec will be 3. For example, suppose incoming call has codec order “8 0 3”, while local codec order is “3 0 8”. Parameters state Negotiator state. If non-zero, the negotiator will use the codec order as specified in remote offer.
If application does not want send modified offer, it can just send the active local SDP as rdc rfc 3264. For example, it can have more or less media lines than the offer, or their order may be different than the offer.
This rfc 3264 the behavior of the SDP negotiator when responding to an offer, whether it should rfc 3264 use the codec preference as set by remote, or should it rather use the codec preference as specified by local endpoint. Create the SDP negotiator with local offer. Calling rfc 3264 function will not change the state of the negotiator. ffc
RFC – An Offer/Answer Model with the Session Description Protocol (SDP)
Note that the string buffer must remain rfc 3264 until the callback is unregistered. As those rfc 3264 are format specifics, the negotiation must be done by the format or codec implementation.
If negotiator has initial local capability, application can specify NULL on this argument; in this case, the negotiator will create answer by by negotiating remote offer with initial local capability.
This rfc 3264 occurs when an offer either local or remote has been provided with answer. Application can only call this function after rfc 3264 has been done, or otherwise there won’t be active SDPs. The SDP negotiator is ready to negotiate both session descriptors.
[SIPForum-discussion] Proper RFC 3264 Hold Behavior in SDP
In this case, the negotiator will update the stream in the local active media as inactive too. This structure contains negotiation state and several SDP session descriptors currently being rfc 3264 in the negotiation.
In generating answer, the SDP fmtp in the answer candidate may need to be modified by the customized SDP format rfc 3264 callback to achieve flexible SDP negotiation, e. The declaration of customized SDP format matching callback.
AMR fmtp ‘octet-align’ field can be adjusted with the offer rfc 3264 the codec implementation support both packetization modes octet-aligned and bandwidth-efficient. If zero, it will gfc to use the local codec order. If the negotiation rfc 3264, the active local and remote SDP will not change.
At this stage, application may or may not ready to create an answer. The pool’s lifetime needs to be valid for the duration of the negotiator. Determine whether remote sent answer as opposed to offer on the last negotiation. Generating SDP Answer After rfc 3264 offer has been set in the negotiator, application can rfc 3264 the SDP negotiator to generate appropriate answer based on local capability.
The purpose of this negotiation is to verify remote answer, and rfc 3264 the 324 offer according to the answer. In this case, both active local rfc 3264 active remote will not be modified. This state occurs when SDP negotiator has received offer from remote and currently waiting for local answer.
This specifies the behavior of the SDP rfc 3264 when responding to an rc, whether it should answer with multiple formats or not. If negotiator doesn’t have initial local capability, application MUST specify local answer here. If non-zero, the negotiator will respond with multiple formats. Get the current remote SDP offer or answer. Register customized SDP format matching callback function for the specified format. Get the currently active remote SDP. Rfc 3264 SDP negotiator state.
Parameters neg The SDP negotiator instance.