45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
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#include <stdio.h>
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#include <string.h>
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#include <arpa/inet.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 <netinet/ip.h>
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#define PORT 23 //目标地址端口号
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#define ADDR "192.168.6.234" //目标地址IP
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int main()
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{
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int iSocketFD = 0; //socket句柄
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unsigned int iRemoteAddr = 0;
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struct sockaddr_in stRemoteAddr = {0}; //对端，即目标地址信息
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socklen_t socklen = 0;
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char buf[4096] = {0}; //存储接收到的数据
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iSocketFD = socket(AF_INET, SOCK_STREAM, 0); //建立socket
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if(0 > iSocketFD)
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{
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printf("创建socket失败！\n");
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return 0;
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}
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stRemoteAddr.sin_family = AF_INET;
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stRemoteAddr.sin_port = htons(PORT);
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inet_pton(AF_INET, ADDR, &iRemoteAddr);
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stRemoteAddr.sin_addr.s_addr=iRemoteAddr;
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//连接方法： 传入句柄，目标地址，和大小
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if(0 > connect(iSocketFD, (void *)&stRemoteAddr, sizeof(stRemoteAddr)))
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{
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printf("连接失败！\n");
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//printf("connect failed:%d",errno);//失败时也可打印errno
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}else{
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printf("连接成功！\n");
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recv(iSocketFD, buf, sizeof(buf), 0); ////将接收数据打入buf，参数分别是句柄，储存处，最大长度，其他信息（设为0即可）。
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printf("Received:%s\n", buf);
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}
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close(iSocketFD);//关闭socket
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return 0;
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}
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