// Start is called before the first frame update
void Start()
{
uri = new Uri(urlString);
Debug.Log(QuicheVersion.GetVersion());
if (isDebugLog)
{
QuicheDebug.EnableDebugLogging((line, argp) => {
Debug.Log(line);
});
}
udpClient = new UdpClient();
quicheClient = new QuicheClient(CreateQuicheConfig());
udpClient.Connect($"{uri.Host}", uri.Port);
quicheConn = quicheClient.Connect(uri.Authority);
Debug.Log(
$"connecting to {uri.Authority} from {udpClient.Client.LocalEndPoint} "
+ $"with scid {quicheClient.HexDump}");
// initial send
int write = quicheConn.Send(buf);
udpClient.Send(buf, write);
h3Config = new H3Config();
// Prepare request.
var reqList = new H3Header[] {
new H3Header(":method", "GET"),
new H3Header(":scheme", "https"),
new H3Header(":authority", uri.Host),
new H3Header(":path", uri.PathAndQuery),
new H3Header("user-agent", "unity-quiche"),
}.ToList();
// TODO Add custom headers to the request.
// TODO Add body
body = null;
if (body != null)
{
reqList.Add(new H3Header(
"content-length", $"{body.Length}"));
}
req = reqList.ToArray();
}
// Update is called once per frame
void Update()
{
if (quicheConn == null || quicheConn.IsClosed)
{
return;
}
quicheConn.OnTimeout();
if (receiveResult == null)
{
receiveResult = udpClient.BeginReceive((res) => {
var recvBytes = udpClient.EndReceive(res, ref remoteIpEndPoint);
var read = quicheConn.Receive(recvBytes);
if (read == (int)QuicheError.QUICHE_ERR_DONE)
{
Debug.Log("done reading");
return;
}
if (read < 0)
{
QuicheError err = (QuicheError)Enum
.ToObject(typeof(QuicheError), read);
Debug.LogError($"recv failed {err}");
throw new Exception();
}
}, null);
}
if (receiveResult.IsCompleted)
{
receiveResult = null;
}
if (quicheConn.IsEstablished && h3Conn == null)
{
h3Conn = new H3Connection(quicheConn, h3Config);
}
if (h3Conn != null)
{
var reqsDone = 0;
for (var i = reqsSent; i < reqsCount; i++)
{
Debug.Log($"sending HTTP request [{string.Join(",", req.Select(x=>H3Header.DebugString(x)))}]");
var streamId = h3Conn.SendRequest(req, body == null);
if (streamId == (int)H3Error.QUICHE_H3_TRANSPORT_ERROR)
{
Debug.Log("not enough stream credits, retry later...");
break;
}
if (streamId < 0)
{
H3Error err = (H3Error)Enum
.ToObject(typeof(H3Error), streamId);
Debug.LogError($"recv failed {err}");
throw new Exception();
}
if (body != null)
{
var e = h3Conn.SendBody((ulong)streamId, body, true);
if (e < 0)
{
H3Error err = (H3Error)Enum
.ToObject(typeof(H3Error), e);
Debug.LogError($"recv failed {err}");
throw new Exception();
}
}
reqsDone++;
}
reqsSent += reqsDone;
}
if (h3Conn != null)
{
H3Event ev = null;
// Process HTTP/3 events.
while (h3Conn != null)
{
var streamId = h3Conn.Poll(ref ev);
if (streamId == (int)H3Error.QUICHE_H3_DONE)
{
break;
}
else if (streamId < 0)
{
H3Error err = (H3Error)Enum
.ToObject(typeof(H3Error), streamId);
Debug.LogError($"recv failed {err}");
return;
}
switch (ev.EventType)
{
case (uint)H3EventType.QUICHE_H3_EVENT_HEADERS:
{
var rc = ev.ForEachHeader((name, nameLen, value, valueLen, argp) => {
Debug.Log($"got HTTP header: {name}={value}");
});
if (rc != 0)
{
Debug.LogError("failed to process headers");
}
break;
}
case (uint)H3EventType.QUICHE_H3_EVENT_DATA:
{
var _out = new byte[65535];
var len = h3Conn.ReceiveBody((ulong)streamId, _out);
if (len <= 0)
{
break;
}
Debug.Log($"{Encoding.ASCII.GetString(_out.Take((int)len).ToArray())}");
break;
}
case (uint)H3EventType.QUICHE_H3_EVENT_FINISHED:
{
reqsComplete++;
if (reqsComplete == reqsCount)
{
Debug.Log($"{reqsComplete}/{reqsCount} response(s) received, cloing...");
var e = quicheConn.Close(true, 0, Encoding.ASCII.GetBytes("kthxbye"));
h3Conn.Dispose();
h3Conn = null;
if (e == (int)QuicheError.QUICHE_ERR_DONE)
{
break;
}
else if (e < 0)
{
QuicheError err = (QuicheError)Enum
.ToObject(typeof(QuicheError), e);
Debug.LogError($"recv failed {err}");
throw new Exception();
}
}
break;
}
}
ev.Dispose();
ev = null;
}
}
var write = quicheConn.Send(buf);
if (write == (int)QuicheError.QUICHE_ERR_DONE)
{
return;
}
if (write < 0)
{
QuicheError err = (QuicheError)Enum
.ToObject(typeof(QuicheError), write);
Debug.LogError($"send failed {err}");
throw new Exception();
}
udpClient.Send(buf, write);
}