what is sip protocol

You need to upload files to the server during network programming. Multipart/form-data is a way to upload files.Multipart/form-data is actually the way that browsers upload files using forms. The most common scenario is when you write a message, add an attachment to the message, and the attachment is usually added usin

blindly learning and the pursuit of UML, the final results are very little; There is no need to use UML at all, which makes intuitive communication between the roles in the system difficult. What is UML. 1. UML is a standard. Speaking of standards here, it seems too esoteric to say that the agreement may be better. UM

: 135Services: Location ServiceDescription: Microsoft runs DCE RPC end-point Mapper for its DCOM service on this port. This is similar to the capabilities of UNIX 111 ports. Services that use DCOM and RPC use the end-point mapper on the computer to register their location. When remote clients connect to the computer, they look for the location where the end-point mapper find the service. Hacker scan the computer for this port to find running Exchange

word should be a noun. Besides describing delivery behaviors, it also implies the people and things involved in building this key, this is the focus of this article. When talking about the delivery of the turn-key, we can intuitively look at these things: hardware, software, design documents, application documents, test reports, and so on. Everyone on Earth knows this .. Not much. The Turn-key itself should refer to a continuous project, far from be

For some special reasons, some browsing on the network is restricted. So how to browse more resources? Then you can install the IPv6 protocol to browse through the wall. This simple method that saves money will definitely suit you. 1. What is IPv6? Simply put, the existing IPv4 only supports about 4 billion million net

Speaking of how user login under HTTP protocol guarantees password security:Small white Maybe the first idea is that when a user enters a password to sign in on the login page, the foreground page encrypts the password entered by the user, and then sends the encrypted password as an HTTP request parameter over the network to the server.This does not guarantee the user's account security, because a little bi

Initiate an interactive request for the HTTP protocol:Want to initiate can be initiated (in line with the World Wide Web System developed HTTP protocol can be specified in the format of the request header, request body, etc.), but can not return and return what is determined by the target interface. If a problem is ret

When learning network protocols, we need to pay attention to the concepts and applications of DHCP protocols and DHCP servers. So what about DHCP? Next, let's take a look at the basic concepts of DHCP. 1. What is DHCP? Dynamic Host Allocation Protocol (DHCP) is a standard TC

Documentation License (GNU free document license. They are universal copyright verification protocols for Free Software and are developed and released by the Free Software Foundation (FSF. GPL-based software can be commercially sold, but Source Code cannot be closed.If you make any changes and/or re-develop and release the software that complies with GPL, your product must inherit the GPL protocol and do not allow closed source code.Lgpl-based softwa

What is a thread? What is the difference between it and the process? Why multithreading ?, Multi-thread A thread is an execution unit in which the program code can be executed during execution. In Java, a thread has four states: running, ready, suspended, and ended. A proces

Speaking of how user login under HTTP protocol guarantees password security:Small white Maybe the first idea is that when a user enters a password to sign in on the login page, the foreground page encrypts the password entered by the user, and then sends the encrypted password as an HTTP request parameter over the network to the server.This does not guarantee the user's account security, because a little bi

took a while to find a time when suddenly the brain became enlightened. This is not, is the problem of the network, what Data Flow (TDS) protocol flow is not correct AH, the internal connection fatal error Ah, is not the network,

security token" based on the Interoperability Protocol. it takes a lot of work to implement these protocols, but WIF has done all of these work for you so that it can be used by non-protocol experts, it can be used to construct and launch the Security token service at a very low cost. WIF makes it easier to construct your own STS. How to Implement logic, rules depend entirely on you, and you need to enfo

IrontechLinks: https://www.zhihu.com/question/20085992/answer/71742030Source: KnowCopyright belongs to the author, please contact the author for authorization.The following explanation is copy from Quora, and the answer is wonderful.HTTP uses TCP connection. But the HTTP uses only one TCP connection.In HTTP, client initiates an HTTP session by opening a TCP connection to the HTTP server with which it wishes

What is Ajax? The interaction Model (flow) of Ajax? What is the difference between synchronous and asynchronous? Ajax cross-domain solution?What is Ajax: Asynchronous JavaScript and XMLAjax is