Question

我想从命令行向客户端输入参数，并使服务器接收并打印它们。

当前代码：

客户：

#include <stdio.h> 
#include <sys/socket.h> 
#include <arpa/inet.h> 
#include <unistd.h> 
#include <string.h> 
#include <stdlib.h>
#define PORT 8080 

int main(int argc, char const *argv[]) 
{ 
    int sock = 0, valread; 
    struct sockaddr_in serv_addr; 
    char buffer[1024] = {0}; 
    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) 
    { 
        printf("\n Socket creation error \n"); 
        return -1; 
    } 

    serv_addr.sin_family = AF_INET; 
    serv_addr.sin_port = htons(PORT); 

    if(inet_pton(AF_INET, "127.0.0.1", &serv_addr.sin_addr)<=0)  
    { 
        printf(Invalid address\n"); 
        return -1; 
    } 

    if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) 
    { 
        printf("Connection Failed \n"); 
        return -1; 
    } 
     if(argc>=2){
 int i, numb;
 for(i=0; i<argc; i++) {
    send(sock , &argv[i] , 10000 , 0 ); 
}
}
    return 0; 
}

服务器：

#define PORT 8080 
int main(int argc, char const *argv[]) 
{ 
    int server_fd, new_socket, valread; 
    struct sockaddr_in address; 
    int opt = 1; 
    int addrlen = sizeof(address); 
    char buffer[1024] = {0}; 

    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) 
    { 
        perror("socket failed"); 
        exit(EXIT_FAILURE); 
    } 

    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR , &opt, sizeof(opt))) 
    { 
        perror("setsockopt"); 
        exit(EXIT_FAILURE); 
    } 
    address.sin_family = AF_INET; 
    address.sin_addr.s_addr = INADDR_ANY; 
    address.sin_port = htons( PORT ); 

    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address))<0) 
    { 
        perror("bind failed"); 
        exit(EXIT_FAILURE); 
    } 
    if (listen(server_fd, 3) < 0) 
    { 
        perror("listen"); 
        exit(EXIT_FAILURE); 
    } 
    if ((new_socket = accept(server_fd, (struct sockaddr *)&address,  
                       (socklen_t*)&addrlen))<0) 
    { 
        perror("accept"); 
        exit(EXIT_FAILURE); 
    } 
      valread = read( new_socket , buffer, 1024); 
      puts("The client sent the values: ");

       if(argc>=2){
      int i;
      for(i=0; i<argc; i++) {
      int* valuerec=(int *)buffer;
      int val2=*valuerec;
      printf("%d\n", val2); 
      puts(" ");
}
}
    return 0; 
}

我尝试过多种方式，例如在发送前使用atoi，但是都没有输出数字，如何建立数字呢？我知道我没有在这篇文章中包括服务器库，但这只是为了使其更短。

从客户端向服务器发送命令行参数

0 个答案: