74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <netinet/tcp.h>
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#include <netdb.h>
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int main(int argc, const char * argv[]) {
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// insert code here...
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printf("Hello, World!\n");
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int client_sockfd;
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int len;
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struct sockaddr_in remota_addr; //服务器端网络地址结构体
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char buf[BUFSIZ]; //数据传送的缓冲区
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memset(&remota_addr,0,sizeof(remota_addr)); //数据初始化--清零
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remota_addr.sin_family = AF_INET; //设置为IPV4通信
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remota_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
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remota_addr.sin_port = htons(8000); //服务器端口号
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//创建客户端套接字--Ipv4协议，面向连接通信，TCP协议
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//成功，返回0 ，失败返回-1
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if ((client_sockfd=socket(PF_INET, SOCK_STREAM, 0))<0) {
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perror("socket");
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return 1;
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}
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//将套接字绑定到服务器的网络地址上
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if (connect(client_sockfd, (struct sockaddr *)&remota_addr, sizeof(struct sockaddr))<0) {
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perror("connect");
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return 1;
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}
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printf("connect to server\n");
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len = recv(client_sockfd, buf, BUFSIZ, 0); //接受服务器端消息
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buf[len]='/0';
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printf("%s",buf); //打印服务器端消息
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//循环的发送信息并打印接受消息--recv返回接收到的字节数，send返回发送的字节数
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while (1) {
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memset(buf,0,sizeof(buf));
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printf("Enter string to send");
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scanf("%s",buf);
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// if (!strcmp(buf,"quit")) {
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// break;
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// }
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len=send(client_sockfd,buf,strlen(buf),0);
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memset(buf,0,sizeof(buf));
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len=recv(client_sockfd,buf,BUFSIZ,0);
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buf[len]='\0';
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printf("received:%s\n",buf);
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if(buf[0]=='q'){
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break;
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}
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}
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close(client_sockfd);
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return 0;
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}
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