Socket Server： TCP 多線程版

一、Server端

#include <stdlib.h>#include <stdio.h>#include <string.h>#include <sys/socket.h>#include <netinet/in.h>int main(int argc, char*argv[]){        int sockfd = socket(AF_INET, SOCK_STREAM, 0);        struct sockaddr_in addrSrv;        bzero(&addrSrv, sizeof(struct sockaddr_in));        addrSrv.sin_addr.s_addr = htonl(INADDR_ANY);        addrSrv.sin_family = AF_INET;        addrSrv.sin_port = htons(6000);        bind(sockfd, (struct sockaddr*)&addrSrv, sizeof(struct sockaddr));        listen(sockfd, 3);        struct sockaddr_in addrConn;        socklen_t len = sizeof(struct sockaddr_in);        while (1)        {                int sockConn = accept(sockfd, (struct sockaddr*)&addrConn, &len);                pid_t pid = fork();                if (pid == 0)                {                        close(sockfd);                        while (1)                        {                                char buf[1024] = {0};                                int n = read(sockConn, buf, 1024);                                if (n == 0)                                {                                        break;                                }                                printf("server recv:%s\n", buf);                                write(sockConn, "server data", strlen("server data"));                        }                        close(sockConn);                }                else if (pid > 0)                {                        close(sockConn);                }        }        close(sockfd);        return 0;}

二、Client端

#include <stdlib.h>#include <stdio.h>#include <string.h>#include <sys/socket.h>#include <netinet/in.h>int main(int argc, char*argv[]){        int sockfd = socket(AF_INET, SOCK_STREAM, 0);        struct sockaddr_in addrSrv;        bzero(&addrSrv, sizeof(struct sockaddr_in));        addrSrv.sin_addr.s_addr = inet_addr("127.0.0.1");        addrSrv.sin_family = AF_INET;        addrSrv.sin_port = htons(6000);        connect(sockfd, (struct sockaddr*)&addrSrv, sizeof(struct sockaddr));        char temp[1024] = {0};        while (1)        {                gets(temp);                write(sockfd, temp, strlen(temp));                char buf[1024] = {0};                read(sockfd, buf, 1024);                printf("client recv:%s\n", buf);        }        close(sockfd);        return 0;}