linux下C发送HttpPost请求

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我是靠谱客的博主要减肥煎饼，最近开发中收集的这篇文章主要介绍linux下C发送HttpPost请求，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

在linux 下用于发送简单post请求。

</pre><pre code_snippet_id="1784587" snippet_file_name="blog_20160726_1_6356653" name="code" class="cpp">#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <netinet/in.h>
#include <stdlib.h>

#define MAXLINE 1024

int post(char *ip,int port,char *page,char *msg){
    int sockfd,n;
    char recvline[MAXLINE];
    struct sockaddr_in servaddr;
    char content[4096];
    char content_page[50];
    sprintf(content_page,"POST /%s HTTP/1.1rn",page);
    char content_host[50];
    sprintf(content_host,"HOST: %s:%drn",ip,port);
    char content_type[] = "Content-Type: application/x-www-form-urlencodedrn";
    char content_len[50];
    sprintf(content_len,"Content-Length: %drnrn",strlen(msg));
    sprintf(content,"%s%s%s%s%s",content_page,content_host,content_type,content_len,msg);
    if((sockfd = socket(AF_INET,SOCK_STREAM,0)) < 0)
        printf("socket errorn");
    bzero(&servaddr,sizeof(servaddr));
    servaddr.sin_family = AF_INET;
    servaddr.sin_port = htons(80);
    if(inet_pton(AF_INET,ip,&servaddr.sin_addr) <= 0)
        printf("inet_pton errorn");
    if(connect(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr)) < 0)
        printf("connect errorn");
    write(sockfd,content,strlen(content));
    while((n = read(sockfd,recvline,MAXLINE)) > 0)
    {
        recvline[n] = 0;
        if(fputs(recvline,stdout) == EOF)
            printf("fputs errorn");
    }
    if(n < 0)
        printf("read errorn");

}

int main()
{
    char msg[] = "name=A&id=1";
    char ip[] = "192.168.1.2";
    int port = 80;
    char page[] = "xxxx.do";
    post(ip,80,page,msg);
    exit(0);
}