public async Task TestLargePacket()
{
var serializer = new MqttPacketFormatterAdapter(MqttProtocolVersion.V311);
var pipe = new DuplexPipeMockup();
var connection = new DefaultConnectionContext();
connection.Transport = pipe;
var ctx = new MqttConnectionContext(serializer, connection);
await ctx.SendPacketAsync(new MqttPublishPacket { Payload = new byte[20_000] }, CancellationToken.None).ConfigureAwait(false);
public async Task TestReceivePacketAsyncThrowsWhenReaderCompleted()
{
var serializer = new MqttPacketFormatterAdapter(MqttProtocolVersion.V311);
var pipe = new DuplexPipeMockup();
var connection = new DefaultConnectionContext();
connection.Transport = pipe;
var ctx = new MqttConnectionContext(serializer, connection);
pipe.Receive.Writer.Complete();
await Assert.ThrowsExceptionAsync <MqttCommunicationException>(() => ctx.ReceivePacketAsync(CancellationToken.None));
}
public async Task TestReceivePacketAsyncThrowsWhenReaderCompleted()
{
var serializer = new MqttPacketSerializer {
};
var pipe = new DuplexPipeMockup();
var connection = new DefaultConnectionContext();
connection.Transport = pipe;
var ctx = new MqttConnectionContext(serializer, connection);
pipe.Receive.Writer.Complete();
await Assert.ThrowsExceptionAsync <MqttCommunicationException>(() => ctx.ReceivePacketAsync(TimeSpan.FromSeconds(1), CancellationToken.None));
}
public async Task TestCorruptedConnectPacket()
{
var writer = new MqttPacketWriter();
var serializer = new MqttPacketFormatterAdapter(writer);
var pipe = new DuplexPipeMockup();
var connection = new DefaultConnectionContext();
connection.Transport = pipe;
var ctx = new MqttConnectionContext(serializer, connection);
await pipe.Receive.Writer.WriteAsync(writer.AddMqttHeader(MqttControlPacketType.Connect, new byte[0]));
await Assert.ThrowsExceptionAsync <MqttProtocolViolationException>(() => ctx.ReceivePacketAsync(CancellationToken.None));
// the first exception should complete the pipes so if someone tries to use the connection after that it should throw immidiatly
await Assert.ThrowsExceptionAsync <InvalidOperationException>(() => ctx.ReceivePacketAsync(CancellationToken.None));
}
public async Task TestParallelWrites()
{
var serializer = new MqttPacketFormatterAdapter(MqttProtocolVersion.V311);
var pipe = new DuplexPipeMockup();
var connection = new DefaultConnectionContext();
connection.Transport = pipe;
var ctx = new MqttConnectionContext(serializer, connection);
var tasks = Enumerable.Range(1, 10).Select(_ => Task.Run(async() =>
{
for (int i = 0; i < 100; i++)
{
await ctx.SendPacketAsync(new MqttPublishPacket(), TimeSpan.Zero, CancellationToken.None).ConfigureAwait(false);
}
}));
await Task.WhenAll(tasks).ConfigureAwait(false);
}
