网站设计免费字体,百度用户服务中心投诉电话,tornado做网站,投稿网TCP网络编程的基本流程
对于服务端,通常为以下流程:
调用socket函数创建socket调用bind函数将socket绑定到某个IP和端口上调用listen开始监听当有客户端请求连接上来时,调用accept函数接受连接,产生一个新的socket基于新产生的socket调用send或recv函数,开始与客户端进行数据…TCP网络编程的基本流程
对于服务端,通常为以下流程:
调用socket函数创建socket调用bind函数将socket绑定到某个IP和端口上调用listen开始监听当有客户端请求连接上来时,调用accept函数接受连接,产生一个新的socket基于新产生的socket调用send或recv函数,开始与客户端进行数据交流通信结束后,调用close函数关闭套接字
对于客户端,通常为以下流程: 调用socket函数创建客户端socket 调用connect函数尝试连接服务器 连接成功后调用send或recv函数,开始与服务器进行通信 通信结束后,调用close函数关闭socket 服务端代码实现如下:
#include iostream
#include sys/types.h
#include sys/socket.h
#include arpa/inet.h
#include unistd.h
#include cstring
#pragma clang diagnostic push
#pragma ide diagnostic ignored EndlessLoop
using std::cout;
using std::endl;
int main(int argc,char * argv[])
{//1.create socketint listenfd socket(AF_INET,SOCK_STREAM,0);if(listenfd -1){coutcreate listenfd failedendl;return -1;}//2.Initialize server addressstruct sockaddr_in bindaddr{};bindaddr.sin_family AF_INET;bindaddr.sin_addr.s_addr htonl(INADDR_ANY);bindaddr.sin_port htons(3000);if (bind(listenfd,(struct sockaddr*) bindaddr, sizeof(bindaddr)) -1){coutbind listen socket failed!endl;return -1;}//3.Start listeningif(listen(listenfd,SOMAXCONN) -1){coutlisten errorendl;return -1;}while (true){sockaddr_in clientaddr{};socklen_t clientaddrlen sizeof(clientaddr);//4.accept client connectint clientfd accept(listenfd,(struct sockaddr*)clientaddr,clientaddrlen);if (clientfd ! -1){//5.Receive data from the clientchar recvBuf[32]{0};int ret recv(clientfd,recvBuf,32,0);if (ret 0){coutReceive data from the client:recvBufendl;ret send(clientfd,recvBuf, strlen(recvBuf),0);if(ret ! strlen(recvBuf))coutsend failedendl;elsecoutsend successfullyendl;}else{coutReceive data errorendl;}close(clientfd);}}//7.close listenclose(listenfd);return 0;
}
#pragma clang diagnostic pop客户端代码
#include iostream
#include sys/types.h
#include sys/socket.h
#include arpa/inet.h
#include unistd.h
#include cstring#define SERVER_ADDRESS 127.0.0.1
#define SERVER_PORT 3000
#define SEND_DATA helloworldint main(int argc,char *argv[])
{//1.create socketint clientfd socket(AF_INET,SOCK_STREAM,0);if(clientfd -1){std::coutcreate socket failedstd::endl;return -1;}//2.connect serversockaddr_in serveraddr;serveraddr.sin_family AF_INET;serveraddr.sin_addr.s_addr inet_addr(SERVER_ADDRESS);serveraddr.sin_port htons(SERVER_PORT);if (connect(clientfd,(struct sockaddr*) serveraddr, sizeof(serveraddr)) -1){std::coutconnect socket errorstd::endl;return -1;}//3. send data to serverint ret send(clientfd,SEND_DATA, strlen(SEND_DATA),0);if (ret ! strlen(SEND_DATA)){std::coutsend data failedstd::endl;return -1;}std::coutsuccessfullySEND_DATAstd::endl;//4.recv data from serverchar recvBuf[32] {0};ret recv(clientfd,recvBuf,32,0);if(ret 0){std::coutsucessfullystd::endl;} else{std::coutfailedrecvBufstd::endl;}//5.close socketclose(clientfd);return 0;
}TCP网络编程的基本流程
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