我正在开发一个 Windows 8 应用程序，它使用 node.js/socket.io 与 node.js 服务器通信，并且遇到了一堆连接问题。我决定运行一个 tcp 嗅探器应用程序（microsoft network monitor 3.4），并注意到在发送 http 请求之前，我的字符串中有一堆垃圾：
C8 D7 19 87 09 1C C8 60 00 13 8C FA 08 00 45 00 00 C3 37 78 40 00 80 06 00 00 C0 A8 01 71 17 17 5C 67 C2 4F 01 BB 06 1A 36 71 A2 8B 48 C7 50 18 04 00 36 4D 00 00 47 45 54 20 2F 20 48 54 54 50 2F 31 2E 31 0D 0A 53 65 63 2D 57 65 62 53 6F 63 6B 65 74 2D 4B 65 79 3A 20 76 46 46 30 4F 4C 2F 55 63 53 49 6E 6F 70 46 67 52 69 6F 52 73 77 3D 3D 0D 0A 43 6F 6E 6E 65 63 74 69 6F 6E 3A 20 55 70 67 72 61 64 65 0D 0A 55 70 67 72 61 64 65 3A 20 57 65 62 73 6F 63 6B 65 74 0D 0A 53 65 63 2D 57 65 62 53 6F 63 6B 65 74 2D 56 65 72 73 69 6F 6E 3A 20 31 33 0D 0A 48 6F 73 74 3A 20 32 33 2E 32 33 2E 39 32 2E 31 30 33 3A 34 34 33 0D 0A 0D 0A
È×.‡..È`..Œú..E..Ã7x@.€...À¨.q..\gÂO.»..6q¢‹HÇP...6M..GET / HTTP/1.1..Sec-WebSocket-Key: vFF0OL/UcSInopFgRioRsw==..Connection: Upgrade..Upgrade: Websocket..Sec-WebSocket-Version: 13..Host: 192.168.1.1:443....（在大多数情况下，点是 \r\n）
虽然我使用的是 443 端口，但这不是一个安全的 websocket——我被迫使用 443，因为一些智能手机只允许 websocket 在该端口上创建套接字连接。
在 C++ 中，我正在创建 websocket，如下所示：
void Websocket::Connect(Platform::String ^host)
{
if ( this->socket != nullptr ) return;
try
{
Uri^ address = ref new Uri(host);
readBuffer = ref new Buffer(1000);
this->socket = ref new MessageWebSocket();
this->socket->Control->MessageType = SocketMessageType::Utf8;
this->socket->Control->MaxMessageSize = 512;
this->socket->Closed += ref new TypedEventHandler<IWebSocket^, WebSocketClosedEventArgs^>( this, &Websocket::ServerClosed );
this->socket->MessageReceived += ref new TypedEventHandler<MessageWebSocket^, MessageWebSocketMessageReceivedEventArgs^>( this, &Websocket::MessageRecv );
create_task(this->socket->ConnectAsync(address)).then([this](task<void> previousTask)
{
try
{
concurrency::task_status status = previousTask.wait();
switch( status ) {
case concurrency::task_status::completed:
this->connected = true;
break;
default:
socketErrorString = ref new Platform::String( L"Connection was cancelled" );
}
}
catch(Exception^ exception)
{
this->connected = false;
socketErrorString = ref new Platform::String( exception->Message->Data() );
this->socket = nullptr;
} catch( ... ) {
this->connected = false;
socketErrorString = ref new Platform::String( L"Unknown exception caught (inside connect)" );
this->socket = nullptr;
}
});
} catch( Exception ^exc ) {
this->connected = false;
socketErrorString = exc->Message; //ref new Platform::String( L"Unknown exception caught (outside connect)" );
this->socket = nullptr;
}
}
我在代码中看不到任何类型的问题，所以我希望其他几组眼睛也能看到。谢谢。