如果通过流套接字发送三个项目“A,B,C”,它们将以相同的顺序 - “A,B,C”到达。这些套接字使用TCP(传输控制协议)进行数据传输。如果无法交付,发件人会收到错误提示。 数据报(Datagram)套接字 - 无法保证在网络环境中交付。它们是无连接的,因为不需要像流套接字那样打开连接 ,使用UDP(用户数据报协议)。 ...
当应用层向TCP层发送用于网间传输的、用8位字节表示的数据流,TCP则把数据流分割成适当长度的报文段,最大传输段大小(MSS)通常受该计算机连接的网络的数据链路层的最大传送单元(MTU)限制。之后TCP把数据包传给IP层,由它来通过网络将包传送给接收端实体的TCP层。 TCP为了保证报文传输的可靠,就给每个包一个序号,同...
这是因为它使用了“传输控制协议(The Transmission Control Protocol)”,也叫 “TCP”(请参考RFC-793 获得详细资料。)TCP 控制你的数据按顺序到达并且没有错 误。你也许听到 “TCP” 是因为听到过 “TCP/IP”。这里的IP 是指“Internet 协议”(请参考RFC-791。) IP 只是处理Internet 路由而已。 那么数据报套...
#include <string.h>; #include <sys/socket.h>; #include <sys/types.h>; #define MYPORT 3490 /*用户接入端口*/ #define BACKLOG 10 /* 多少等待连接控制*/ main() { int sockfd, new_fd; /* listen on sock_fd, new connection on new_fd */ struct sockaddr_in my_addr; /* 地址信息 *...
TCP/IP Socket ProgrammingDest
1.TCP 11种状态,连接建立三次握手,连接终止四次握手 还有一种状态是closing:产生该状态的原因比较特殊 connect打开的是主动套接口,用于发起连接,listen打开的是被动套接口,此套接口只能用于接受连接 SYN段,ACK段 ESTABLISH:将未连接队列的一个条目移动至已连接队列中,accept从已连接队列的队头返回第一个连接 ...
socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); and I removed, htonl(INADDR_ANY); now I use int res; res = inet_pton(AF_INET,"127.0.0.1", &serv_addr,sin_addr); is it correct? still got same address family not supported by protocol. ...
Before you start learning socket programming, make sure you already have a certain basic knowledge of network such as understanding what is IP address, TCP, UDP. Before we start our tutorial, keep in mind that the following tutorial only works forLinux OSenvironment. If you are using Windows,...
Python’s socket module is a powerful tool for creating network applications. In this tutorial, you will learn the basics ofPython socket programming, including how to create a simple client-server architecture, handle multiple clients using threading, and understand the differences betweenTCP and UDP...
You’re going to create a socket object using socket.socket(), specifying the socket type as socket.SOCK_STREAM. When you do that, the default protocol that’s used is the Transmission Control Protocol (TCP). This is a good default and probably what you want. Why should you use TCP?