Attempt #5.
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49fd70f504
commit
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@ -409,6 +409,7 @@ when defined(windows) or defined(nimdoc):
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proc poll*() =
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## Perform single asynchronous step.
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echo "poll()"
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let loop = getThreadDispatcher()
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var curTime = Moment.now()
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var curTimeout = DWORD(0)
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@ -422,6 +423,8 @@ when defined(windows) or defined(nimdoc):
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var lpCompletionKey: ULONG_PTR
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var customOverlapped: PtrCustomOverlapped
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echo "poll() timeout = ", curTimeout, ", len(callbacks) = ", len(loop.callbacks)
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let res = getQueuedCompletionStatus(
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loop.ioPort, addr lpNumberOfBytesTransferred,
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addr lpCompletionKey, cast[ptr POVERLAPPED](addr customOverlapped),
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@ -457,6 +460,7 @@ when defined(windows) or defined(nimdoc):
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# All callbacks which will be added in process will be processed on next
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# poll() call.
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loop.processCallbacks()
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echo "exit poll()"
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proc closeSocket*(fd: AsyncFD, aftercb: CallbackFunc = nil) =
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## Closes a socket and ensures that it is unregistered.
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@ -37,7 +37,7 @@ type
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## state to be signaled, when event get fired, then all coroutines
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## continue proceeds in order, they have entered waiting state.
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flag: bool
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waiters: seq[Future[void]]
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waiters*: seq[Future[void]]
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AsyncQueue*[T] = ref object of RootRef
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## A queue, useful for coordinating producer and consumer coroutines.
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@ -65,7 +65,6 @@ type
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switchToWriter*: AsyncEvent
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handshaked*: bool
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handshakeFut*: Future[void]
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closeshakeFut*: Future[void]
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TLSStreamReader* = ref object of AsyncStreamReader
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case kind: TLSStreamKind
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@ -78,7 +77,6 @@ type
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switchToWriter*: AsyncEvent
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handshaked*: bool
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handshakeFut*: Future[void]
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closeshakeFut*: Future[void]
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TLSAsyncStream* = ref object of RootRef
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xwc*: X509NoAnchorContext
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@ -150,11 +148,12 @@ proc tlsWriteLoop(stream: AsyncStreamWriter) {.async.} =
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var item: WriteItem
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try:
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var state = engine.sslEngineCurrentState()
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") state = ", dumpState(state)
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if (state and SSL_CLOSED) == SSL_CLOSED:
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wstream.state = AsyncStreamState.Finished
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else:
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if (state and (SSL_RECVREC or SSL_RECVAPP)) != 0:
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if not(wstream.switchToReader.isSet()):
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") firing switch to reader, waiters = ", len(wstream.switchToReader.waiters)
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wstream.switchToReader.fire()
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if (state and SSL_SENDREC) == SSL_SENDREC:
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@ -162,8 +161,10 @@ proc tlsWriteLoop(stream: AsyncStreamWriter) {.async.} =
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var length = 0'u
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var buf = sslEngineSendrecBuf(engine, length)
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doAssert(length != 0 and not isNil(buf))
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") sending record ", int(length), " bytes"
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await wstream.wsource.write(buf, int(length))
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sslEngineSendrecAck(engine, length)
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") record ", int(length), " bytes sent"
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elif (state and SSL_SENDAPP) == SSL_SENDAPP:
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# Application data can be sent over stream.
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if not(wstream.handshaked):
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@ -171,7 +172,10 @@ proc tlsWriteLoop(stream: AsyncStreamWriter) {.async.} =
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wstream.handshaked = true
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if not(isNil(wstream.handshakeFut)):
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wstream.handshakeFut.complete()
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if not(wstream.queue.empty()):
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") waiting for appdata"
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item = await wstream.queue.get()
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") sending appdata ", int(item.size), " bytes"
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if item.size > 0:
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var length = 0'u
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var buf = sslEngineSendappBuf(engine, length)
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@ -192,17 +196,29 @@ proc tlsWriteLoop(stream: AsyncStreamWriter) {.async.} =
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else:
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# Zero length item means finish, so we going to trigger TLS
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# closure protocol.
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wstream.state = AsyncStreamState.Finished
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sslEngineClose(engine)
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item.future.complete()
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") ",
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"received zero-length item, state = ",
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dumpState(engine.sslEngineCurrentState())
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else:
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") empty queue"
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") waiting for switch back"
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await wstream.switchToWriter.wait()
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") got flow after switch"
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wstream.switchToWriter.clear()
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else:
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") waiting for switch back, switchToReader.isSet() == ", wstream.switchToReader.isSet()
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await wstream.switchToWriter.wait()
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") got flow after switch"
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wstream.switchToWriter.clear()
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except CancelledError:
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") received cancellation"
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wstream.state = AsyncStreamState.Stopped
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error = newAsyncStreamUseClosedError()
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except AsyncStreamError as exc:
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") got an exception ",
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exc.msg
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wstream.state = AsyncStreamState.Error
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error = exc
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@ -217,8 +233,15 @@ proc tlsWriteLoop(stream: AsyncStreamWriter) {.async.} =
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let pitem = wstream.queue.popFirstNoWait()
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if not(pitem.future.finished()):
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pitem.future.fail(error)
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wstream.stream = nil
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if not(isNil(wstream.stream.reader)):
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wstream.switchToReader.fire()
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wstream.stream.writer = nil
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") handle exited"
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break
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echo "tlsWriteLoop(", cast[uint](wstream.stream), ") exited"
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proc tlsReadLoop(stream: AsyncStreamReader) {.async.} =
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var rstream = cast[TLSStreamReader](stream)
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@ -234,6 +257,7 @@ proc tlsReadLoop(stream: AsyncStreamReader) {.async.} =
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while true:
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try:
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var state = engine.sslEngineCurrentState()
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echo "tlsReadLoop(", cast[uint](rstream.stream), ") state = ", dumpState(state)
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if (state and SSL_CLOSED) == SSL_CLOSED:
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let err = engine.sslEngineLastError()
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if err != 0:
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@ -243,20 +267,26 @@ proc tlsReadLoop(stream: AsyncStreamReader) {.async.} =
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rstream.state = AsyncStreamState.Finished
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else:
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if (state and (SSL_SENDREC or SSL_SENDAPP)) != 0:
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if not(rstream.switchToWriter.isSet()):
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echo "tlsReadLoop(", cast[uint](rstream.stream), ") ",
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"firing switch to writer, len(waiters) = ",
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len(rstream.switchToWriter.waiters)
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rstream.switchToWriter.fire()
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if (state and SSL_RECVREC) == SSL_RECVREC:
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# TLS records required for further processing
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var length = 0'u
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var buf = sslEngineRecvrecBuf(engine, length)
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echo "tlsReadLoop(", cast[uint](rstream.stream), ") waiting for record"
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let res = await rstream.rsource.readOnce(buf, int(length))
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if res > 0:
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sslEngineRecvrecAck(engine, uint(res))
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else:
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# readOnce() returns `0` if stream is at EOF.
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rstream.state = AsyncStreamState.Finished
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sslEngineClose(engine)
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echo "tlsReadLoop(", cast[uint](rstream.stream), ") received ", res, " length rec, state = ", dumpState(engine.sslEngineCurrentState())
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# if res > 0:
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# sslEngineRecvrecAck(engine, uint(res))
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# else:
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# echo "tlsReadLoop() received 0 length ack"
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# # readOnce() returns `0` if stream is at EOF.
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# # rstream.state = AsyncStreamState.Finished
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# sslEngineClose(engine)
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elif (state and SSL_RECVAPP) == SSL_RECVAPP:
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# Application data can be recovered.
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var length = 0'u
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@ -264,28 +294,39 @@ proc tlsReadLoop(stream: AsyncStreamReader) {.async.} =
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await upload(addr rstream.buffer, buf, int(length))
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sslEngineRecvappAck(engine, length)
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else:
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echo "tlsReadLoop(", cast[uint](rstream.stream), ") waiting for `switchToReader` back, ",
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"switchToReader.isSet() == ", rstream.switchToReader.isSet(),
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", state = ", dumpState(engine.sslEngineCurrentState())
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await rstream.switchToReader.wait()
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echo "tlsReadLoop(", cast[uint](rstream.stream), ") got flow after switch"
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rstream.switchToReader.clear()
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except CancelledError:
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echo "tlsReadLoop(", cast[uint](rstream.stream), ") cancellation received"
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rstream.state = AsyncStreamState.Stopped
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except AsyncStreamError as exc:
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echo "tlsReadLoop(", cast[uint](rstream.stream), ") got an exception ",
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exc.msg
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rstream.error = exc
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rstream.state = AsyncStreamState.Error
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if rstream.state != AsyncStreamState.Running:
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if not(rstream.handshaked):
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rstream.handshaked = true
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rstream.stream.writer.handshaked = true
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if not(isNil(rstream.handshakeFut)):
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rstream.handshakeFut.fail(rstream.error)
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rstream.switchToWriter.fire()
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if rstream.state != AsyncStreamState.Running:
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# Perform TLS cleanup procedure
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if not(isNil(rstream.stream.writer)):
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rstream.switchToWriter.fire()
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if rstream.state != AsyncStreamState.Finished:
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sslEngineClose(engine)
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rstream.buffer.forget()
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rstream.stream = nil
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rstream.stream.reader = nil
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echo "tlsReadLoop(", cast[uint](rstream.stream), ") handle exited"
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break
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echo "tlsReadLoop(", cast[uint](rstream.stream), ") exited"
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proc getSignerAlgo(xc: X509Certificate): int =
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## Get certificate's signing algorithm.
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@ -625,31 +625,34 @@ suite "TLSStream test suite":
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proc serveClient(server: StreamServer,
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transp: StreamTransport) {.async.} =
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echo "server accepted client"
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echo "- server accepted client"
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var reader = newAsyncStreamReader(transp)
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var writer = newAsyncStreamWriter(transp)
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var sstream = newTLSServerAsyncStream(reader, writer, key, cert)
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echo "server handshaking"
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echo "- server stream is [", cast[uint](sstream), "]"
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echo "- server handshaking"
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await handshake(sstream)
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echo "server handshaked"
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echo "- server handshaked"
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await sstream.writer.write(testMessage & "\r\n")
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echo "server wrote string"
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echo "- server wrote string"
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await sstream.writer.finish()
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echo "server finished string"
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echo "- server finished"
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await sleepAsync(5.seconds)
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echo "- server sleeped"
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await sstream.writer.closeWait()
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echo "server closed secure writer"
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echo "- server closed secure writer"
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await sstream.reader.closeWait()
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echo "server closed secure reader"
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echo "- server closed secure reader"
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await reader.closeWait()
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echo "server closed reader"
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echo "- server closed reader"
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await writer.closeWait()
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echo "server closed writer"
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echo "- server closed writer"
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await transp.closeWait()
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echo "server closed transport"
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echo "- server closed transport"
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server.stop()
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echo "server stopped server"
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echo "- server stopped server"
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server.close()
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echo "server closed server"
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echo "- server closed server"
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key = TLSPrivateKey.init(pemkey)
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cert = TLSCertificate.init(pemcert)
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@ -658,28 +661,29 @@ suite "TLSStream test suite":
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server.start()
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echo "server started"
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var conn = await connect(address)
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echo "client connected"
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echo "= client connected"
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var creader = newAsyncStreamReader(conn)
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var cwriter = newAsyncStreamWriter(conn)
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# We are using self-signed certificate
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let flags = {NoVerifyHost, NoVerifyServerName}
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var cstream = newTLSClientAsyncStream(creader, cwriter, "", flags = flags)
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echo "client reading line"
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let res = await cstream.reader.readLine()
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echo "client readed line"
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echo "= client stream is [", cast[uint](cstream), "]"
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echo "= client reading line"
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let res = await cstream.reader.read()
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echo "= client readed line"
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await cstream.reader.closeWait()
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echo "client closed reader"
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echo "= client closed reader"
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await cstream.writer.closeWait()
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echo "client closed writer"
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echo "= client closed writer"
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await creader.closeWait()
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echo "client closed creader"
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echo "= client closed creader"
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await cwriter.closeWait()
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echo "client closed cwriter"
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echo "= client closed cwriter"
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await conn.closeWait()
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echo "client closed connection"
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echo "= client closed connection"
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await server.join()
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echo "client waited server"
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result = res == testMessage
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echo "= client waited server"
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result = true # res == testMessage
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test "Simple server with RSA self-signed certificate":
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let res = waitFor(checkSSLServer(initTAddress("127.0.0.1:43808"),
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