public static WSHttpRequest ProcessHandShakeData(byte[] data, int offset, int size)
{
string body = Encoding.ASCII.GetString(data, offset, size);
Match match = ProtoConfig.REQUEST_REGEX.Match(body);
if (!match.Success)
{
return(null);
}
WSHttpRequest request = new WSHttpRequest
{
method = match.Groups["method"].Value,
path = match.Groups["path"].Value,
body = match.Groups["body"].Value
};
CaptureCollection fields = match.Groups["field_name"].Captures;
CaptureCollection values = match.Groups["field_value"].Captures;
int count = fields.Count;
for (int i = 0; i < count; i++)
{
string name = fields[i].ToString();
string value = values[i].ToString();
request.headers[name] = value;
}
return(request);
}
public static byte[] ProcessHybi13Handshake(WSHttpRequest request, string subProtocol)
{
StringBuilder builder = new StringBuilder();
builder.Append("HTTP/1.1 101 Switching Protocols\r\n");
builder.Append("Upgrade: websocket\r\n");
builder.Append("Connection: Upgrade\r\n");
if (!string.IsNullOrEmpty(subProtocol))
{
builder.Append($"Sec-WebSocket-Protocol: {subProtocol}\r\n");
}
string responseKey =
Convert.ToBase64String(
SHA1.Create().ComputeHash(Encoding.ASCII.GetBytes(request["Sec-WebSocket-Key"] + ProtoConfig.WSRespGuid)));
builder.Append($"Sec-WebSocket-Accept: {responseKey}\r\n");
builder.Append("\r\n");
// Logger.Info( builder.ToString() );
return(Encoding.ASCII.GetBytes(builder.ToString()));
}
protected override void ProcessData(StreamBuffer cache)
{
while (true)
{
if (cache.length == 0)
{
break;
}
if (!this._handshakeComplete)
{
WSHttpRequest request = WSHelper.ProcessHandShakeData(cache.GetBuffer(), 0, cache.length);
if (request == null)
{
break;
}
//Logger.Log( request );
string subProtocol = WSHelper.Negotiate(this.subProtocols, request.subProtocols);
byte[] responseData = WSHelper.ProcessHybi13Handshake(request, subProtocol);
if (responseData == null)
{
break;
}
this._handshakeComplete = true;
this.SendWithoutHeader(responseData, 0, responseData.Length);
cache.Clear();
NetEvent netEvent = NetworkMgr.instance.PopEvent();
netEvent.type = NetEvent.Type.Establish;
netEvent.session = this.session;
NetworkMgr.instance.PushEvent(netEvent);
break;
}
{
bool isEof = WSHelper.ProcessClientData(cache.GetBuffer(), 0, cache.length, this._readState, out int len, out WSOPCode op);
if (len < 0) //载体没有读取完
{
break;
}
//截断当前缓冲区
cache.Strip(len, cache.length - len);
if (isEof) //分片已结束
{
if (op == WSOPCode.Close)
{
//到这里代表连接关闭了
this._readState.Clear();
this.OnError("client closed");
break;
}
byte[] data = this._readState.ToArray();
this._readState.Clear();
NetEvent netEvent = NetworkMgr.instance.PopEvent();
netEvent.type = NetEvent.Type.Recv;
netEvent.session = this.session;
netEvent.data = data;
NetworkMgr.instance.PushEvent(netEvent);
}
}
}
}