sdp transmission

1 Introduction SIPSession Initiation Protocol, Session Initiation Protocol), SAPSession Announcement Protocol, Session notification Protocol), SDPSession Description Protocol, Session Description Protocol) are three sessions) related RFC protocols are connected and differentiated. In this article, we will make a simple analysis of the three protocols and provide a multimedia application that has some practical value to achieve with these three protocols. 2 protocol analysis 2.1 introduction and

RTP/RTCP/RTSP/SIP/SDP RelationshipRTP (real-time transport protocol, Transport layer)Real-time Transport Protocol) is a Transport layer protocol for multimedia traffic on the Internet. The RTP protocol details the standard packet format for transmitting audio and video over the Internet. RTP protocols are commonly used in streaming media systems (with the RTCP protocol), video conferencing and a Push-to-talk system (with either a/p or SIP), making it

Next we will introduce the SDP protocol. So what is the specific role of this agreement? What does it mean? Session Description Protocol (SDP) provides multimedia session description for session notifications, session invitations, and other forms of multimedia session initialization. The session directory is used to assist with multimedia conference announcements and send relevant settings for session parti

may be extended, there are currently mainly "audio", "video", "application", "data", and "control ". The second subdomain is the sending port of the media stream.Note: For UDP, the port range should be (1024-65535), and the compatibility with RTP should be an even number. If the media type is applications, it is possible that its multi-layer (hierarchically) encoded media stream needs multiple ports to be sent to a unicast address, as shown below: M = In this case, only the even number of

Sdp:session description Protocol. Painting Description ProtocolThe SDP descriptions mainly include: Session name, session purpose, session validity time, the media that constitutes the session, and the information that accepts the media (address, port, format), and so on.1. OverviewSDP is also a product of the Mmusic workgroup, and is used much in mbone content. The purpose is to pass the media stream information in the media session, allowing the rec

size index is encoded as follows 7.3 Data Unit Instances 8. Description of the agreement SDP using the Request/response modelEach of these transactions (Transaction) contains a request protocol data unit (PDU) and a response PDU SDP uses L2CAP as the transport protocol, after establishing the connection and issuing the SDP requestNo additional request can be iss

SDP used to build INVITE , 200OK and the ACK the message body of the message, for the master to be called the user to Exchange media information. 1 . configuration of media streams( 1 ) the master called Media Description must correspond exactly to the main called N a media stream (m=) corresponding, both contain A=rtpmap. The purpose of this is to easily adapt the static payload type to the dynamic net load type conversion. ( 2 ) The port number for

The Session Description Protocol (SDP) provides multimedia session descriptions for session notifications, session invitations, and other forms of multimedia session initialization. The session directory is used to assist with multimedia conference announcements and send relevant settings for session participants. SDP is used to transmit this information to the receiving end.

SDP is completely a session description format-it is not a Transport Protocol-it only uses different appropriate transport protocols, including session notification protocol (SAP) and Session Initiation Protocol (SIP), real-time stream protocol (RTSP), mimeExtended protocol email and Hypertext Transfer Protocol (HTTP ). The SDP protocol is also a text-based protocol. This ensures that the Protocol is highly

SDP fileIntroductionThe session Description Protocol (SDP) is a format for describing the initialization parameters of streaming media Session S. SDP does not deliver media itself are used for negotiation between end points of media type, format, and all Associa Ted Properties.To connect to a streaming server sending an MPEG2 transport stream, you don't have usua

Keywords: Bluetooth bluetooth® protocol SDP Anatomy SDP overview SDP notes Author: Zhongjun In the spirit of mutual learning purposes, to share this series of articles, welcome reprint, please specify the author, respect for copyright, thank you Please correct me if the article is not in the wrong place, learn together You can also access my csdn:http

Reprint address (http://www.cnblogs.com/qingquan/archive/2011/08/02/2125585.html) I. Introduction of SDP protocolThe SDP is completely a session description format-it is not a transport protocol-it uses only different appropriate transport protocols, including session Notification Protocol (SAP), Session Initiation Protocol (SIP), real-time Streaming Protocol (RTSP), MIME Extension Protocol e-mail, and Hype

SDP application in the SIP protocol and SDPSIP Application The SDP is used to construct the message bodies of INVITE, 200OK, and ACK messages for the master and called users to exchange media information. 1. Media Stream Configuration (1) The description of the primary called media must correspond to the nth media stream (m =) of the primary called, and both contain a = rtpmap. this aims to adapt to the con

I. Introduction to SDP protocol SDP is completely a session description format-it is not a Transport Protocol-it only uses different appropriate transport protocols, including session notification protocol (SAP) and Session Initiation Protocol (SIP), real-time stream protocol (RTSP), MIME extension protocol email and Hypertext Transfer Protocol (HTTP ). The SDP p