75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
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// tcp_s1 的客户端
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#include <stdio.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 <unistd.h>
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#include <string.h> // bzero
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#include <stdlib.h> // atoi
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int main(int argc, char const *argv[])
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{
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if (argc < 3)
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{
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printf("usage: %s server_ip port\n", argv[0]);
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return 1;
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}
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// TCP 的 socket 套接字类型 SOCK_STREAM
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int sock_fd = socket(AF_INET, SOCK_STREAM, 0);
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if (sock_fd < 0)
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{
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perror("socket");
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return 1;
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}
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// 连接服务端
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struct sockaddr_in server_addr;
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bzero(&server_addr, sizeof(server_addr));
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server_addr.sin_family = AF_INET;
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server_addr.sin_addr.s_addr = inet_addr(argv[1]);
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server_addr.sin_port = htons(atoi(argv[2]));
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// 连接
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if (connect(sock_fd, (struct sockaddr *)&server_addr, sizeof(server_addr)) != 0)
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{
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perror("connect");
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close(sock_fd);
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return 1;
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}
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printf("connect ok\n");
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while (1)
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{
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char buf[128] = "";
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scanf("%s", buf); // 从键盘取数据
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int send_len = send(sock_fd, buf, strlen(buf), 0);
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if (send_len == -1)
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{
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perror("send");
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break;
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}
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if (strncmp(buf, "bye", 3) == 0)
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{
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break;
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}
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if (strncmp(buf, "clear", 5) == 0)
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{
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system("clear");
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}
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memset(buf, 0, 128);
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send_len = recv(sock_fd, buf, 128, 0);
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if (send_len > 0)
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{
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printf("%s(%s): %s\n", argv[1], argv[2], buf);
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}
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}
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close(sock_fd);
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return 0;
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}
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