what is sip protocol

streams have a public media format 415 Response ( Media type not supported ) , and join 304 Warning Header field ( Media type not supported ) . 3 . Multicast Operations( 1 ) The multicast addresses that are accepted and sent are the same. ( 2 ) is called not allowed to change the media stream only hair, just accept or receive / To the hair characteristics. ( 3 ) If the call does not support multicasting, the loopback - Response and the Warning ( mu

Csdn lidp http://blog.csdn.net/perfectpdl The SIP response to the invite request may be final or temporary. The final response is always sent reliably, but not the temporary response. You can use the prack (temporary response confirmation) method to reliably send a temporary response.To develop applications that support prack, the following conditions must be met: The client sending the invite request m

the function name itself is a variable. For function declarations and function expressions as shown below, it is very useful to understand that a function in JavaScript cannot be overloaded without considering the difference between a function declaration and a function expression.1 function f (a) {2 return a + 3} 4 5 function f (a) {6 return a-10; 7} 8 9//without considering the difference betwe

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 cont

What is the TCP/IP protocol? This tutorial on TCP/IP is mainly considering that the Internet is almost entirely based on TCP/IP protocol, so what we should understand

What is the TCP/IP protocol. first, the TCP/IP model The TCP/IP protocol model (transmission Control protocol/internet Protocol) contains a series of network protocols that form the basis of the Internet and

============ Problem Description ============Not involved in audio, video send, as long as the implementation of registration, and chat function on the line, the online sipdroid source, but the configuration of the XML ============ Solution 1============9 is the Android 2.3 version, it should be very few machines are less than 2.3 of the bar, so this program can be installedAndroid platform based on the SIP

Modification Purpose: If user-agent with GIT version information, it is easy to be caught by a version of the vulnerability targeted attack.Examples are as follows:sip/2.0 tryingvia:sip/2.0/udp 192.168.5.218:5060;rport=5060;branch= Z9hg4bk--106273027814628634511462861243from: Modification Method:In the corresponding Sofia profileAdd to It can be achieved.　　Modify the User-agent name in the SIP

What is the Hessian protocol?At present, Web service technology is the mainstream technology to solve the problem of integration and interoperability of heterogeneous platform systems.The XML on which it is based is already the re

protocol package does not have the complex reliability and Control Mechanism of the TCP protocol package. There are no "sequence" or "validation" fields. Application of UDP protocol Some readers may ask, since UDP is an unreliable network protocol,

What is the TCP.IP protocol? Generally speaking, TCP/IP protocol is the Technology foundation of Internet based on TCP/IP protocol (Transmission Protocol/Inter-network

new module and the old module have the same functions and interfaces, even if they use different algorithms and protocols. To transmit information and data correctly between computers and terminals in the network, there must be an agreement or rule on the order of data transmission, data format and content, such an agreement or rule is called an agreement. The network protocol consists of three parts: 1. S

What is Modbus protocol? What isModbus?Modbus is the first soft communication protocol proposed by modicon.Is gradually recognized as a standard communication protocol.Data communication or transmission, different

to real-time requirements are very high, such as 0.5s or less, this is a good choice. The former mimic Spydroid wrote a proposed RTSP server, in fact, is options,describe,setup,play,pause,teardown these steps, the agreement with the most extensive, on-line introduction is more. To really understand the RTSP protocol,

We can use the network protocol analyzer to observe the network protocol analysis. Here we will explain the network analyzer. The best way to analyze data packets transmitted over the network depends largely on the device you have. in the early stages of network technology development using the Internet era of HUB or HUB), the answer is very simple. You only need

Dubbo What protocol is used for internal communicationsDubbo supports multiple remote invocation methods, such as Dubbo RPC (binary serialization + TCP protocol), HTTP invoker (binary serialization + HTTP protocol, no support for text serialization found at least in open sou

File Transfer ProtocolFTP (file Transfer Protocol), which is the short name of the document transfer Protocol. Used for two-way transmission of control files on the Internet. At the same time, it is also an application (application). It allows users to connect their PC to all servers running the FTP

TCP/IPTransmission Control Protocol/Internet Protocol, which is translated into Transmission Control Protocol/Internet Protocol, is composed of the underlying IP protocol and TCP

I. Introduction to the HTTP protocol 1. What is an agreement Two people agreed to do the same thing (e.g., housing agreement) 2.HTTP is the agreement of WHO and WHO HTTP protocol is the protoc