\u7aef\u5230\u7aef\u901a\u4fe1：TCP\u662f\u7aef\u5230\u7aef\u901a\u4fe1\u534f\u8bae，\u610f\u5473\u7740\u901a\u4fe1\u53cc\u65b9\u76f4\u63a5\u8fdb\u884c\u6570\u636e\u4f20\u8f93，\u800c\u4e0d\u9700\u8981\u7ecf\u8fc7\u4e2d\u95f4\u8bbe\u5907\u7684\u5904\u7406\u3002<\/p>\n<\/li>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250430232043-6812b04bda774.png\")
<\/p>\n
\u670d\u52a1\u7aef：<\/p>\n
1. socket()：\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5957\u63a5\u5b57\u3002 2. bind(ip+port)：\u5c06\u5957\u63a5\u5b57\u7ed1\u5b9a\u5230\u6307\u5b9a\u7684IP\u5730\u5740\u548c\u7aef\u53e3\u53f7\u4e0a，\u4ee5\u4fbf\u76d1\u542c\u6765\u81ea\u8be5\u5730\u5740\u548c\u7aef\u53e3\u7684\u8fde\u63a5\u8bf7\u6c42\u3002 3. listen()：\u4f7f\u5957\u63a5\u5b57\u8fdb\u5165\u76d1\u542c\u72b6\u6001，\u7b49\u5f85\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42\u3002 4. accept()：\u63a5\u53d7\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42，\u5efa\u7acb\u8fde\u63a5\u3002 5. recv()：\u63a5\u6536\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u6570\u636e\u3002 6. send()：\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e\u3002 7. close()：\u5173\u95ed\u5957\u63a5\u5b57，\u7ed3\u675f\u901a\u4fe1\u3002<\/p>\n
\u5ba2\u6237\u7aef：<\/p>\n
1. socket()：\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5957\u63a5\u5b57\u3002 2. connect(ip+port)：\u5411\u670d\u52a1\u7aef\u7684\u6307\u5b9aIP\u5730\u5740\u548c\u7aef\u53e3\u53f7\u53d1\u8d77\u8fde\u63a5\u8bf7\u6c42\u3002 3. send()：\u5411\u670d\u52a1\u7aef\u53d1\u9001\u6570\u636e\u3002 4. recv()：\u63a5\u6536\u6765\u81ea\u670d\u52a1\u7aef\u7684\u6570\u636e\u3002 5. close()：\u5173\u95ed\u5957\u63a5\u5b57，\u7ed3\u675f\u901a\u4fe1\u3002<\/p>\n
TCP\u7f16\u7a0b\u6d41\u7a0b：<\/p>\n
1.TCP\u670d\u52a1\u5668\u7aef\u7f16\u7a0b\u6d41\u7a0b：socket\u521b\u5efa\u5957\u63a5\u5b57->bind\u7ed1\u5b9aIP\u548c\u7aef\u53e3->listen\u521b\u5efa\u76d1\u542c\u961f\u5217->accept\u63a5\u53d7\u8fde\u63a5->receive\u63a5\u6536\u6570\u636e->send\u53d1\u9001\u6570\u636e->close\u5173\u95ed\u8fde\u63a5\u3002<\/p>\n
2.TCP\u5ba2\u6237\u7aef\u7f16\u7a0b\u6d41\u7a0b：socket\u521b\u5efa\u5957\u63a5\u5b57->connect\u53d1\u8d77\u8fde\u63a5->send\u53d1\u9001\u6570\u636e->receive\u63a5\u6536\u6570\u636e->close\u5173\u95ed\u8fde\u63a5\u3002<\/p>\n
\u4e8c\u3001ser\u670d\u52a1\u5668\u4ee3\u7801<\/h2>\n
TCP\u670d\u52a1\u5668\u7a0b\u5e8f，\u7528\u4e8e\u63a5\u53d7\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42，\u5e76\u4e0e\u5ba2\u6237\u7aef\u8fdb\u884c\u6570\u636e\u4ea4\u6362 \u3002<\/p>\n
#include<stdio.h>
\n#include<stdlib.h>
\n#include<unistd.h>
\n#include<string.h>
\n#include<sys\/socket.h>
\n#include<netinet\/in.h>
\n#include<arpa\/inet.h><\/p>\n
int main()
\n{
\n \/\/\u521b\u5efa\u5957\u63a5\u5b57（\u6253\u5f00\u6587\u4ef6，\u6587\u4ef6\u63cf\u8ff0\u7b26） \u5957\u63a5\u5b57\u53ef\u4ee5\u901a\u8fc7\u7f51\u7edc\u6536\u53d1\u6570\u636e
\n int sockfd=socket(AF_INET,SOCK_STREAM,0);
\n if(sockfd==-1)
\n {
\n exit(1);
\n }<\/p>\n
struct sockaddr_in saddr,caddr;\/\/\u670d\u52a1\u5668\u7684ip\u7aef\u53e3
\n memset(&saddr,0,sizeof(saddr));\/\/\u6e05\u7a7a
\n saddr.sin_family=AF_INET;\/\/\u586b\u5145
\n saddr.sin_port=htons(6000);\/\/\u5236\u5b9a\u7aef\u53e3\u53f7\u4e3a6000 \u5c0f\u4e8e1024\u662f\u77e5\u540d\u7aef\u53e3，1024～4096\u662f\u4fdd\u7559\u7684\u7aef\u53e3，4096\u4ee5\u4e0a\u662f\u4e34\u65f6\u7aef\u53e3
\n saddr.sin_addr.s_addr=inet_addr("127.0.0.1");
\n \/\/\u6307\u5b9aip+\u7aef\u53e3
\n int res=bind(sockfd,(struct sockaddr*)&saddr,sizeof(saddr));\/\/\u7ed1\u5b9a，\u6307\u5b9a\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u7684ip\u53ca\u7aef\u53e3<\/p>\n
if(res==-1)
\n {
\n printf("bind err\\\\n");
\n exit(1);
\n }<\/p>\n
res=listen(sockfd,5);
\n if(res==-1)
\n {
\n exit(1);
\n }
\n while(1)
\n {
\n int len=sizeof(caddr);\/\/accept\u63a5\u53d7\u8fde\u63a5，\u5982\u679c\u6ca1\u4eba\u8fde\u63a5，\u5219\u963b\u585e
\n int c=accept(sockfd,(struct sockaddr*)&caddr,&len);
\n if(c<0)
\n {
\n break;
\n }<\/p>\n
printf("accept c=%d\\\\n",c);
\n pid_t pid=fork();
\n if(pid==0)
\n {
\n while(1)
\n {
\n char buff[128]={0};
\n int n=recv(c,buff,127,0);\/\/\u63a5\u53d7\u8fde\u63a5，\u63a5\u6536\u6570\u636e，\u4f1a\u963b\u585e,\u4e5f\u53ef\u4ee5\u6362\u6210read()
\n if(n<=0)
\n {
\n break;
\n }
\n printf("recv:%s\\\\n",buff);
\n send(c,"ok",2,0);\/\/\u53d1\u9001\u6570\u636e，\u4e5f\u53ef\u4ee5\u6362\u6210write()
\n }
\n printf("client close\\\\n");
\n close(c);<\/p>\n
exit(0);
\n }<\/p>\n
close(c);
\n }
\n}<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250430232043-6812b04beccd4.png\")
<\/p>\n