87 lines
1.7 KiB
C
87 lines
1.7 KiB
C
#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <netdb.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 <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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/*
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连接到服务器后，会不停循环，等待输入，
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输入quit后，断开与服务器的连接
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*/
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int main()
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{
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int clientfd;
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struct sockaddr_in serverAddr;
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char sendbuf[200];
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char recvbuf[200];
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int iDataNum;
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char a[] = "192.168.209.193";
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char *str = a;
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int port = 61;
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if((clientfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
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{
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printf("socket error");
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return -1;
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}
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bzero(&serverAddr, sizeof(serverAddr));
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serverAddr.sin_family = AF_INET;
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serverAddr.sin_port = htons(port);
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printf("the value of str:%s\n", str);
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//将字符串的IP地址转化为网络字节序
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int ret = inet_pton(AF_INET, str, &serverAddr.sin_addr);
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printf("the value of ret is:%d\n",ret);
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printf("inet_pton:0x%x\n", serverAddr.sin_addr.s_addr);
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if(ret < 0)
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{
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printf("error");
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return -1;
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}
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int i = connect(clientfd, (struct sockaddr *)&serverAddr, sizeof(serverAddr));
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printf("the value of i is:%d\n", i);
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if(i < 0)
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{
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fprintf(stderr, "socket connect error=%d(%s)\n", errno, strerror(errno));
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return -1;
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}
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printf("连接到主机...\n");
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while(1)
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{
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printf("发送消息:");
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scanf("%s", sendbuf);
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printf("\n");
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send(clientfd, sendbuf, strlen(sendbuf), 0);
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if(strcmp(sendbuf, "quit") == 0)
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break;
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printf("读取消息:");
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recvbuf[0] = '\0';
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iDataNum = recv(clientfd, recvbuf, 200, 0);
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recvbuf[iDataNum] = '\0';
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printf("%s\n", recvbuf);
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}
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close(clientfd);
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return 0;
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}
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