C语言使用Socket发起HTTP请求

[c]


#include <string.h>
#include <sys/socket.h>
#include <resolv.h>

int request(char *host, int port){

    int sockfd;
    struct sockaddr_in server;
    char buffer[2048];
    char *request = "GET / HTTP/1.1\r\nHost: www.sina.com.cn\r\nConnection: close\r\n\r\n";

    sockfd = socket(AF_INET, SOCK_STREAM, 0);

    server.sin_family = AF_INET;
    server.sin_port = htons(port);
    server.sin_addr.s_addr = inet_addr(host);

    connect(sockfd, (struct sockaddr*)&server, sizeof(server));

    send(sockfd, request, strlen(request), 0);

    recv(sockfd, buffer, sizeof(buffer), 0);

    close(sockfd);

    printf("%s", buffer);

    return 0;
}

void main(){
    request("219.239.21.42", 80);
}



[/c]

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