public async Task <string> WelcomeFromReceiver(Stream stream)
{
try {
stream = new PXExceptionsFilterStream(stream);
var reader = new PXBinaryReaderAsync(stream);
var writer = new PXBinaryWriterAsync(stream);
if (await reader.ReadInt16() == PLLP_VERSION)
{
writer.Write(PLLP_SIGNAL_VERSION_OK);
await writer.FlushAsync();
}
else
{
writer.Write(PLLP_SIGNAL_INCORRECT_VERSION);
await writer.FlushAsync();
throw new PLLPVersionIncorrectException();
}
Guid id;
if (await reader.ReadBool())
{
id = (await reader.ReadGuid());
}
else
{
id = Guid.NewGuid();
writer.Write(id);
await writer.FlushAsync();
}
return(id.ToString());
} catch (PLLPVersionIncorrectException) {
throw;
} catch (PXConnectionClosedRemoteException) {
throw;
} catch (Exception e) {
throw new PLLPUknownException(e);
}
}
public async Task <string> WelcomeFromSender(Stream stream, string reconnectingClientId)
{
try {
stream = new PXExceptionsFilterStream(stream);
var reader = new PXBinaryReaderAsync(stream);
var writer = new PXBinaryWriterAsync(stream);
writer.Write(PLLP_VERSION);
await writer.FlushAsync();
if (await reader.ReadInt16() != PLLP_SIGNAL_VERSION_OK)
{
throw new PLLPVersionIncorrectException();
}
if (reconnectingClientId != null)
{
writer.Write(true);
writer.Write(Guid.Parse(reconnectingClientId));
await writer.FlushAsync();
return(reconnectingClientId);
}
else
{
writer.Write(false);
await writer.FlushAsync();
return((await reader.ReadGuid()).ToString());
}
} catch (PLLPVersionIncorrectException) {
throw;
} catch (PXConnectionClosedRemoteException) {
throw;
} catch (Exception e) {
throw new PLLPUknownException(e);
}
}
private async Task SendAckMessage(ushort id)
{
this.processing[id].UpdateResponse(null);
try {
var writer = new PXBinaryWriterAsync(await this.streamReadyTaskSource.Task);
writer.Write(MESSAGE_TYPE_ACK);
writer.Write(id);
await writer.FlushAsync();
} catch (PXConnectionLostException e) {
ReportOnConnectionLost(e.ConnectionStream);
await SendAckMessage(id);
}
}
public async Task SendResponse(ushort messageId, byte[] response)
{
this.processing[messageId].UpdateResponse(response);
try {
var writer = new PXBinaryWriterAsync(await streamReadyTaskSource.Task);
writer.Write(MESSAGE_TYPE_RESPONSE);
writer.Write(messageId);
writer.Write(response.Length);
writer.Write(response);
await writer.FlushAsync();
} catch (PXConnectionLostException e) {
ReportOnConnectionLost(e.ConnectionStream);
await SendResponse(messageId, response);
}
}
private async Task <ushort> SendMessageInternal(MessageData message)
{
try {
var writer = new PXBinaryWriterAsync(await streamReadyTaskSource.Task);
writer.Write(MESSAGE_TYPE_DATA);
writer.Write(message.id);
writer.Write(message.responseWaiter != null ? FLAG_REQUEST : (byte)0);
writer.Write(message.data.Length);
writer.Write(message.data);
await writer.FlushAsync();
} catch (PXConnectionLostException e) {
ReportOnConnectionLost(e.ConnectionStream);
await SendMessageInternal(message);
}
return(message.id);
}
public async Task BasicTypesSerializationTest()
{
MemoryStream memory = new MemoryStream();
var writer = new PXBinaryWriterAsync(memory);
writer.Write((byte)1);
writer.Write((short)2);
writer.Write((ushort)3);
writer.Write(new byte[] { 1, 2, 3 });
await writer.FlushAsync();
var reader = new PXBinaryReaderAsync(new MemoryStream(memory.ToArray()));
Assert.AreEqual((byte)1, await reader.ReadByte());
Assert.AreEqual((short)2, await reader.ReadInt16());
Assert.AreEqual((ushort)3, await reader.ReadUInt16());
Assert.AreEqual(new byte[] { 1, 2, 3 }, await reader.ReadBytes(3));
}