1

I have trying to make a GET/ POST request. GET request for now. I am able to establish connection but the response i get is never 200 OK. Here is the code

   int socketFD;
    struct sockaddr_in myaddr;
    //    struct sockaddr_in hints;
    socketFD = socket(AF_INET, SOCK_STREAM, 0);
    if (socketFD == -1) {
        NSLog(@"Error in making socket");
    }      
    myaddr.sin_port = htons(80);
    memset(&myaddr.sin_zero, '\0', 8);


    char *sendbug = "GET 173.194.66.99 HTTP/1.0\r\n\r\n";


    struct sockaddr_in dest,their_addr;
    //    struct addrinfo *res;
    struct sockaddr sockAddrToDisplay;

    dest.sin_family = AF_INET;
    dest.sin_port = htons(80);
    NSLog(@"%s",sendbug);
    dest.sin_addr.s_addr = inet_addr("173.194.66.99"); // IP for google


    int connectResult =    connect(socketFD, (struct sockaddr *)&dest, sizeof(struct sockaddr));

    if (connectResult == -1) {
        NSLog(@"Error connecting");
    }

    int sendResult =   sendto(socketFD, sendbug, strlen(sendbug), 0, (struct sockaddr *)&dest, sizeof(struct sockaddr));

    if (sendResult == -1) {
        NSLog(@"Sendind failed");
    }

    //    int peerResult =    getpeername(socketFD, (struct sockaddr *)&dest,(socklen_t *) sizeof(struct sockaddr));


    struct addrinfo hints, *res;
    int sockfd;
    int byte_count;
    socklen_t fromlen;
    struct sockaddr_storage addr;
    char buf[512];
    char ipstr[INET6_ADDRSTRLEN];


    fromlen = sizeof addr;
    byte_count = recvfrom(socketFD, buf, sizeof buf, 0,(struct sockaddr *) &addr, &fromlen);

    NSLog(@"%s",buf);

And the response. I need some help where i am doing wrong and also, how i can make a http POST request. thx in advance fellows

<html>
<head><title>400 Bad Request</title></head>
<body bgcolor="white">
<center><h1>400 Bad Request</h1></center>
<hr><center>nginx/1.3.7</center>
</body>
</html>
∑¥ëXnr
4

1 回答 1

4

你的问题在这里：

char *sendbug = "GET 173.194.66.99 HTTP/1.0\r\n\r\n";

HTTP 协议将请求定义为<method> <resource> [HTTP/<version>]. 版本默认为 1.0，而在 1.0 中你只需要一个换行符，你请求的资源是主页，所以应该是：

char *sendbug = "GET /\r\n";

如果您尝试实现自定义客户端，我建议您阅读 HTTP-RFC，这也应该有助于您构建 POST 请求。并且请升级到 HTTP/1.1，并不是所有的网络服务器都觉得有义务支持 1.0。

RFC 2616 - 超文本传输​​协议 -- HTTP/1.1

于 2013-04-29T10:48:31.737 回答