看一段关于 TCP 协议的历史讨论,源自:The design philosophy of the DARPA internet protocols 读这段文字时,你可能觉得这不是在谈 TCP,而是在创造一个新协议,但事实上这就是 TCP 在被创造过程中真实的纠结。 现在来看,TCP 就是 RFC793 所描述的一个固定格式且简单的协议,它最终是把端到端逻辑和传输做到一起...
要分析TCP三次握手的过程,得从TCP头部开始讲起 TCP三次握手建立连接的过程其实就是收发数据报时的一种特殊情况(四次挥手也是),只是三次握手的报头有一些特殊的设置。 序列号(Sequence number):4个字节。用来标记数据段的顺序,TCP把连接中发送的所有数据字节都编上一个序号,第一个字节的编号由本地随机产生;给字节...
Like all LAN protocols in the IEEE 802 family, 802.11 permits the use of the 802.2 protocol for Logical Link Control (LLC). The 802.2 header, usually called the LLC, contains information about the protocol type of the packet. These 802.2 headers are either 3 bytes or 8 bytes long. The f...
TCP/IP--Used broadly, the set of protocols, standards, and utilities commonly used on the Internet and large networks. Wide area network (WAN)--A large network that is a collection of smaller networks separated by routers. The Internet is an example of a large WAN. ...
主要有:/net/socket.c /net/protocols.c etcINET socket层:BSD socket是个可以用于各种网络协议的接口,而当用于tcp/ip,即建立了AF_INET形式的socket时, 还需要保留些额外的参数,于是就有了struct sock结构。文件主要 有:/net/ipv4/protocol.c /net/ipv4/af_inet.c /net/core/sock.c etcTCP/UDP层:处理传...
The standards for TCP/IP are published in a series of documents called Requests for Comments (RFCs). RFCs are an evolving series of reports, proposals for protocols, and protocol standards that describe the internal workings of TCP/IP and the Internet. Although TCP/IP standards are always publi...
Now TCP is a monster so to keep this post from being too long, I'll save TCP performance for another day. Why is this important? You may be wondering why I am dedicating a full post to a single protocol, well it's really very simple. All your favorite ...
By default, SPS supports http(s) and socks5 two proxy protocols. We can disable a protocol by parameter. For example: Disable the HTTP(S) proxy function to retain only the SOCKS5 proxy function, parameter: --disable-http. proxy sps -T tcp -P 3.3.3.3:8888 -M -t tcp -p :8080 --...
Thus all these protocols together form the TCP/IP protocol suite. Applications will choose which type of protocol to use at each layer based on the functions provided by the protocols. This protocol suite can be easily modified and is compatible with all types of Computer hardware and operating...