service

#include <stdlib.h>#include <pthread.h>#include <sys/socket.h>#include <sys/types.h>#include <netinet/in.h>#include <arpa/inet.h> /* inet(3) functions */ #include <stdlib.h>#include <errno.h>#include <stdio.h>#include <string.h> int handle(int point); int main(void) {int sfd, ind;struct sockaddr_in addr;struct sockaddr_in clent;char resv[1024], sendbuf[1024];char buf[1024];char * myaddr = "192.168.231.128"; int ret; // 返回值设置socklen_t lent;int pid;addr.sin_family = AF_INET; //IPv4 Internet protocols addr.sin_port = htons(5050); //这里输入服务器端口号 addr.sin_addr.s_addr = inet_addr(myaddr);; //INADDR_ANY表示本机IP //獲取socket描述符，IPV4asdprintf("socket start \n");sfd = socket(AF_INET, SOCK_STREAM, 0); if (sfd < 0) {printf("socket error \n");return -1;}printf("bind start \n");//将套接子与指定端口链接if (bind(sfd, (struct sockaddr *) &addr, sizeof(struct sockaddr)) < 0) {printf("bind error \n");return -1;} //监听套接子printf("listen start \n");if (listen(sfd, 1024) < 0) {printf("listen error \n");return -1;} for (;;) {//接受来自客户端的信息printf("accept start \n");memset(&clent, 0, sizeof(clent));lent = sizeof(clent);ind = accept(sfd, (struct sockaddr *) &clent, &lent);if (ind < 0) {printf("accept error %d \n", ind);return -1;} printf("infor \n");printf("clent addr%s porit %d\n",inet_ntop(AF_INET, &clent.sin_addr, buf, sizeof(buf)),ntohs(clent.sin_port)); pid = fork(); if (pid == 0) {//子进程close(sfd);handle(ind);} else if (pid < 0) {//errorclose(ind);} else {//父进程}} return EXIT_SUCCESS; } int handle(int point) { int retn;char buf[1024]; for (;;) {retn = read(point, buf, sizeof(buf));if (retn < 0) {printf("read error \n");close(point);break;} else if (retn == 0) {printf("client exit \n");close(point);break;} printf("client:%s\n", buf); if (strcmp("exit", buf) == 0) {printf("exit \n");close(point);return 0;}}return 0;}