在linux上使用套接字发出https请求

如何在 linux上使用套接字发出http请求？目前,我正在接受

HTTP/1.1 301 Moved Permanently
//etc
Location: https://server.com

这里是相关的代码部分(函数太大了,不能在这里发布)：

/* Socket file descriptor. */
        int sock;
    struct sockaddr_in sockaddr;
    struct hostent *host; /* Host information. */
    sock = socket(AF_INET,/* IPV4 protocol. */
              SOCK_STREAM,/* TCP socket. */
              0); /* O for socket() function choose the correct protocol based on the socket type. */

    if(sock == INVALID_SOCKET) return SOCK_GENERROR;

    if((host = gethostbyname(server)) == NULL) {
        close(sock);
        return SOCK_HOSTNFOUND;
    }

    /* zero buffer */
    memset(&sockaddr,sizeof(sockaddr));
    sockaddr.sin_family = AF_INET;
    memcpy(&sockaddr.sin_addr,host -> h_addr,host -> h_length );
    sockaddr.sin_port = htons(port);

    if(connect(sock,(struct sockaddr *)&sockaddr,sizeof(sockaddr)) == INVALID_SOCKET) {
        close(sock);
        return SOCK_FERRCONN;
    }

    if(send(sock,sendbuf,bufsize,0) == INVALID_SOCKET) {
        close(sock);
        return SOCK_FERRWRITE;
    }


       if((readed = recv(sock,recvbuffer,sizeof(recvbuffer),0)) <= 0)
    break;

在通话中,server =“server.com”;和port = 80;

我试图尽可能地删除我的onw例程并从此代码中键入以使您更加干净.

解决方法

一个这样的库是OpenSSL.使用OpenSSL,客户端的最小代码如下所示：

#include <openssl/ssl.h>

// first connect to the remote as usual,but use the port 443 instead of 80

// initialize OpenSSL - do this once and stash ssl_ctx in a global var
SSL_load_error_strings ();
SSL_library_init ();
SSL_CTX *ssl_ctx = SSL_CTX_new (SSLv23_client_method ());

// create an SSL connection and attach it to the socket
SSL *conn = SSL_new(ssl_ctx);
SSL_set_fd(conn,sock);

// perform the SSL/TLS handshake with the server - when on the
// server side,this would use SSL_accept()
int err = SSL_connect(conn);
if (err != 1)
   abort(); // handle error

// now proceed with HTTP traffic,using SSL_read instead of recv() and
// SSL_write instead of send(),and SSL_shutdown/SSL_free before close()

（编辑：安卓应用网）

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