Question

我正在尝试在包含授权标头的c编程上实现http（GET请求），但问题是我无法获得（200 ok），我只有一个通信会话（服务器回复需要401授权）但不超过。

**while(1){

    strcpy(buffer,"GET /mywebsite/login.html/ HTTP1.1 \n\n");
    strcat(buffer,"Host: localhost\n\n");
    strcat(buffer,"Connection: keep-alive\n\n");
    strcat(buffer,"User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11\n\n");
    strcat(buffer,"Accept: text/html,application/xhtml+xml,application/xml;q=0.9;q=0.8\n\n");
    strcat(buffer,"Accept-Encoding: gzip,deflate,sdch\n\n");
    strcat(buffer,"Accept-Language: en-US,en;q=0.8\n\n");
    strcat(buffer,"Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3\n\n");
    status = send(sock, buffer, strlen(buffer), 0);
    if(status == -1) {
        printf("Error in send(). Error code: %d\n", WSAGetLastError());
        continue;
    }
    buffer[0]='\0';
    //The receiving functions
    status = recv(sock, buffer, BUFFER_SIZE, 0);
    if (status == -1) {
        printf("Error in recv(). Error code: %d\n", WSAGetLastError());
        continue;
    }
    buffer[status] = '\0';
    printf("The message received is: ");
    printf("%s\n\n", buffer);

    strcpy(buffer,"GET /mywebsite/login.html/ HTTP1.1\n\n");
    strcat(buffer,"Host: localhost\n\n");
    strcat(buffer,"Authorization: Basic QWRtaW46MTIzNA== \n\n");
    strcat(buffer,"User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11\n\n");
    strcat(buffer,"Accept: text/html,application/xhtml+xml,application/xml;q=0.9;q=0.8\n\n");
    strcat(buffer,"Accept-Encoding: gzip,deflate,sdch\n\n");
    strcat(buffer,"Accept-Language: en-US,en;q=0.8\n\n");
    strcat(buffer,"Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3\n\n");
    strcat(buffer,"Connection: keep-alive\n\n");
    status = send(sock, buffer, strlen(buffer), 0);
    if(status == -1) {
        printf("Error in send(). Error code: %d\n", WSAGetLastError());
        continue;
    }
    buffer[0]='\0';
    //The receiving functions
    status = recv(sock, buffer, BUFFER_SIZE, 0);
    if (status == -1) {
        printf("Error in recv(). Error code: %d\n", WSAGetLastError());
        continue;
    }
    buffer[status] = '\0';
    printf("%s\n\n", buffer);
    buffer[0]='\0';

}**

第一个标头发送成功，但是服务器一直无所事事的下一个标头（没有回复）请在这里帮助不大我不知道问题是什么...... :(

Answer 1

有一些明显的问题：

标题应以“\ r \ n”分隔，而不是“\ n \ n”，最后以“\ r \ n \ r \ n”结尾。
send和recv == EINTR
send可以发送少于请求的字节数，因此应该在循环中使用它以确保传输所有数据。

在c中实现http授权头

1 个答案: