Function write_http_response

dlib/server/server_http.cpp:322–372

// ----------------------------------------------------------------------------------------

    void write_http_response (
        std::ostream& out,
        outgoing_things outgoing,
        const std::string& result
    )
    {
        using namespace http_impl;
        key_value_map& new_cookies      = outgoing.cookies;
        key_value_map_ci& response_headers = outgoing.headers;

        // only send this header if the user hasn't told us to send another kind
        bool has_content_type = false, has_location = false;
        for(key_value_map_ci::const_iterator ci = response_headers.begin(); ci != response_headers.end(); ++ci )
        {
            if ( !has_content_type && strings_equal_ignore_case(ci->first , "content-type") )
            {
                has_content_type = true;
            }
            else if ( !has_location && strings_equal_ignore_case(ci->first , "location") )
            {
                has_location = true;
            }
        }

        if ( has_location )
        {
            outgoing.http_return = 302;
        }

        if ( !has_content_type )
        {
            response_headers["Content-Type"] = "text/html";
        }

        response_headers["Content-Length"] = cast_to_string(result.size());

        out << "HTTP/1.0 " << outgoing.http_return << " " << outgoing.http_return_status << "\r\n";

        // Set any new headers
        for(key_value_map_ci::const_iterator ci = response_headers.begin(); ci != response_headers.end(); ++ci )
        {
            out << ci->first << ": " << ci->second << "\r\n";
        }

        // set any cookies 
        for(key_value_map::const_iterator ci = new_cookies.begin(); ci != new_cookies.end(); ++ci )
        {
            out << "Set-Cookie: " << urlencode(ci->first) << '=' << urlencode(ci->second) << "\r\n";
        }
        out << "\r\n" << result;
    }

// ----------------------------------------------------------------------------------------