娈电缃灏炕璇涓搴

双胞胎2022

1. // 鍐欎竴娈电敤缃戠粶灏嗚嫳鏂囩炕璇戞垚涓枃鐨勭▼搴#include <stdio.h>#include <string.h>#include <stdlib.h>#include <unistd.h>#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#include <netdb.h>#include <errno.h>#include <fcntl.h>#include <sys/stat.h>int main(int argc, char *argv[]){    int sockfd;    struct sockaddr_in servaddr;    char buf[1024];    int n;    if (argc != 2)    {        printf("usage: tcpclient <IPaddress>\n");        exit(1);    }    sockfd = socket(AF_INET, SOCK_STREAM, 0);    bzero(&servaddr, sizeof(servaddr));    servaddr.sin_family = AF_INET;    servaddr.sin_port = htons(12345);    inet_pton(AF_INET, argv[1], &servaddr.sin_addr);    connect(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr));    while (1)    {        printf("Please enter the message:");        fgets(buf, 1024, stdin);        write(sockfd, buf, strlen(buf));        n = read(sockfd, buf, 1024);        if (n == 0)        {            printf("The other side has been closed.\n");            break;        }        else        {            printf("The message from server is:\n");            write(STDOUT_FILENO, buf, n);        }    }    close(sockfd);    return 0;}

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