public static async Task HandleSeekableStreamAsync(this HttpConnection p, Stream stream)
{
var fileLength = stream.Length;
long beginpos = 0;
long endpos = fileLength - 1;
p.ResponseHeaders["Accept-Ranges"] = "bytes";
if (p.RequestHeaders["Range"] is string ranges)
{
var match = regexBytes.Match(ranges);
beginpos = Convert.ToInt64(match.Groups[1].Value);
if (match.Groups[2].Success)
{
endpos = Convert.ToInt64(match.Groups[2].Value);
}
p.ResponseStatusCode = "206 Partial Content";
p.ResponseHeaders["Content-Range"] = $"bytes {beginpos}-{endpos}/{fileLength}";
}
if (p.Method == "HEAD")
{
await p.outputStream.SwitchToKnownLengthModeAsync(fileLength);
await p.EndResponseAsync();
}
else
{
long realLength = endpos - beginpos + 1;
if (p.outputStream.CurrentCompressionType == CompressionType.None)
{
await p.outputStream.SwitchToKnownLengthModeAsync(realLength);
}
else
{
await p.outputStream.SwitchToChunkedModeAsync();
}
stream.Position = beginpos;
await NaiveUtils.StreamCopyAsync(from : stream, to : p.outputStream,
size : realLength, bs : (int)Math.Min(64 * 1024, realLength));
}
}
public async Task <WsHandleRequestResult> HandleRequestAsync(bool enterRecvLoop)
{
List <string> connectionSplits = p.GetReqHeaderSplits("Connection");
if (p.Method == "GET" &&
p.GetReqHeader("Upgrade") == "websocket" &&
(connectionSplits.Contains("Upgrade") || connectionSplits.Contains("upgrade")))
{
p.Handled = true;
if (p.GetReqHeader("Sec-WebSocket-Version") != "13")
{
p.ResponseStatusCode = "400 Bad Request";
p.setHeader("Sec-WebSocket-Version", "13");
return(new WsHandleRequestResult(WsHandleRequestResult.Results.BadVersion));
}
var wskey = p.GetReqHeader("Sec-WebSocket-Key");
if (wskey == null)
{
p.ResponseStatusCode = "400 Bad Request";
p.keepAlive = false;
return(new WsHandleRequestResult(WsHandleRequestResult.Results.BadKey));
}
p.ResponseStatusCode = "101 Switching Protocols";
p.setHeader("Upgrade", "websocket");
p.setHeader("Connection", "Upgrade");
p.setHeader("Sec-WebSocket-Accept", GetWebsocketAcceptKey(wskey));
p.keepAlive = false;
await p.EndResponseAsync().CAF();
p.SwitchProtocol();
ConnectionState = States.Open;
if (enterRecvLoop)
{
await recvLoopAsync().CAF();
}
return(new WsHandleRequestResult(WsHandleRequestResult.Results.Connected));
}
return(new WsHandleRequestResult(WsHandleRequestResult.Results.NonWebsocket));
}
