Fix TLSStream SSL errors while in handshake could stuck connection. (#133)

Fix expired SSL certificate in tests.

chronos/streams/tlsstream.nim

@@ -260,6 +260,15 @@ proc tlsReadLoop(stream: AsyncStreamReader) {.async.} =
 
   except CancelledError:
     rstream.state = AsyncStreamState.Stopped
+  except TLSStreamProtocolError as exc:
+    rstream.error = exc
+    rstream.state = AsyncStreamState.Error
+    if not(rstream.handshaked):
+      rstream.handshaked = true
+      rstream.stream.writer.handshaked = true
+      if not(isNil(rstream.handshakeFut)):
+        rstream.handshakeFut.fail(rstream.error)
+      rstream.switchToWriter.fire()
   except AsyncStreamReadError as exc:
     rstream.error = exc
     rstream.state = AsyncStreamState.Error

tests/testasyncstream.nim

@@ -10,59 +10,64 @@ import ../chronos, ../chronos/streams/tlsstream
 
 when defined(nimHasUsed): {.used.}
 
+# To create self-signed certificate and key you can use openssl
+# openssl req -new -x509 -sha256 -newkey rsa:2048 -nodes \
+# -keyout example-com.key.pem -days 3650 -out example-com.cert.pem
+
 const SelfSignedRsaKey = """
 -----BEGIN PRIVATE KEY-----
-MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDSXcKMR6zIIHSy
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 -----END PRIVATE KEY-----
 """
 
+# This SSL certificate will expire 13 October 2030.
 const SelfSignedRsaCert = """
 -----BEGIN CERTIFICATE-----
-MIIDkzCCAnugAwIBAgIUEFovLJkPSn4T8BBZMYBrXPDajF0wDQYJKoZIhvcNAQEL
-BQAwWTELMAkGA1UEBhMCQVUxEzARBgNVBAgMClNvbWUtU3RhdGUxITAfBgNVBAoM
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 -----END CERTIFICATE-----
 """