RFC 3264 PDF

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 ยท 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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If zero only a single format will be returned. Note that the string buffer must remain valid until the rfc 3264 is unregistered.

If the negotiation fails, the active local and remote SDP 3624 not change. In generating rfc 3264, the Rcc fmtp in the answer candidate may need to be modified by the customized SDP format matching callback to achieve flexible SDP negotiation, e. This specifies the rfc 3264 of the SDP negotiator when responding to an offer, whether it should rather use the codec preference as set by remote, or should it rather use the codec preference as specified by local endpoint.

Pool to allocate memory. In this case, both active local and active remote will not be modified. Get rfc 3264 currently active remote SDP. If the negotiation succeeds i. AMR fmtp ‘octet-align’ field can be adjusted with the offer when the codec implementation support both packetization modes octet-aligned and bandwidth-efficient.


The purpose 32264 this negotiation is to verify remote answer, and update the initial offer rfc 3264 to the answer.

Determine whether remote sent answer as opposed to offer on the last negotiation. This structure contains negotiation rfc 3264 and several SDP session descriptors currently being used in the negotiation.

An Offer/Answer Model with the Session Description Protocol (SDP)

Create the SDP negotiator with local offer. After remote offer has been set in the rfc 3264, application can request the SDP negotiator to generate appropriate answer based on local capability. If any previous negotiation process was successfull i. If application does rfc 3264 want send modified offer, it can just send the rfx local Rfc 3264 as the offer. Application calls this function when it receives SDP answer from remote.

Negotiate local and remote answer. The negotiator is capable to match and reorder 32664 SDP according to remote offer, and create an answer that is suitable for the offer. Register customized SDP format matching callback function for the specified format. Calling this function will not change the state of the negotiator.

RFC – SDP: Session Description Protocol

Get the current local SDP offer or answer. The customized SDP format matching is needed when the format identification in a media stream session cannot be simply determined by encoding name and clock rate, but also involves one or more format specific parameters, which are specified in SDP fmtp attribute. If zero, rvc rfc 3264 prefer to use the local codec order. For example, it rfc 3264 rfcc more or less media lines than the offer, or their order may be different than the offer.

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Application can only call this function rfc 3264 negotiation has been done, or rfc 3264 there won’t be active SDPs. The SDP negotiator is ready to rfc 3264 both session descriptors. The pool’s lifetime needs to be valid for the duration of the negotiator. In this case, the negotiator will update the stream in the local active media as inactive too. Get the state string description of the specified state. This state occurs when an offer either local or remote has been provided with answer.


The declaration of customized SDP format matching callback. Get SDP negotiator state. Rfc 3264 calling this function, application rfc 3264 send the SDP as offer to remote party, using signaling protocol such as SIP.

Match format in the SDP media offer and answer. Generating SDP Answer After remote offer has been set in the negotiator, application can request the SDP negotiator to generate appropriate answer based on local capability. Rfc 3264 of customized SDP format rfc 3264 option flags.