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RawSocketConnectionTests.cs
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RawSocketConnectionTests.cs
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace Apache.Ignite.Tests
{
using System;
using System.Buffers;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using MessagePack;
using NUnit.Framework;
/// <summary>
/// Tests protocol basics with simple socket connection.
/// </summary>
public class RawSocketConnectionTests : IgniteTestsBase
{
private static readonly byte[] Magic = "IGNI".Select(c => (byte)c).ToArray();
[Test]
public async Task TestCorrectHandshakeReturnsSuccess()
{
await using var stream = await Connect();
await stream.WriteAsync(Magic);
WriteHandshake(stream);
await stream.FlushAsync();
await CheckResponseMagic(stream);
ReadHandshake(stream);
}
[Test]
public async Task TestUnsupportedVersionHandshakeReturnsError()
{
await using var stream = await Connect();
await stream.WriteAsync(Magic);
WriteHandshake(stream, majorVersion: 33);
await stream.FlushAsync();
await CheckResponseMagic(stream);
var ex = Assert.Throws<AssertionException>(() => ReadHandshake(stream));
StringAssert.Contains("Unsupported version: 33.0.0", ex!.Message);
}
private static async Task CheckResponseMagic(NetworkStream stream)
{
var responseMagic = new byte[4];
await stream.ReadAsync(responseMagic);
CollectionAssert.AreEqual(Magic, responseMagic);
}
private static unsafe void ReadHandshake(NetworkStream stream)
{
var msgSize = 0;
stream.Read(new Span<byte>(&msgSize, 4));
msgSize = IPAddress.NetworkToHostOrder(msgSize);
var msg = new byte[msgSize];
stream.Read(msg);
var str = Encoding.UTF8.GetString(msg);
Assert.AreEqual(7, msgSize, str);
// Protocol version.
Assert.AreEqual(3, msg[0]);
Assert.AreEqual(0, msg[1]);
Assert.AreEqual(0, msg[2]);
// Result code.
Assert.AreEqual(0, msg[3]);
}
private static unsafe void WriteHandshake(Stream stream, int majorVersion = 3)
{
var bufferWriter = new ArrayBufferWriter<byte>();
var writer = new MessagePackWriter(bufferWriter);
// Version.
writer.Write(majorVersion);
writer.Write(0);
writer.Write(0);
writer.Write(2); // Client type: general purpose.
writer.WriteBinHeader(0); // Features.
writer.WriteMapHeader(0); // Extensions.
writer.Flush();
// Write big-endian message size.
var msgSize = IPAddress.HostToNetworkOrder(bufferWriter.WrittenCount);
stream.Write(new ReadOnlySpan<byte>(&msgSize, 4));
// Write message.
stream.Write(bufferWriter.WrittenSpan);
}
private static async Task<NetworkStream> Connect()
{
Socket socket = new(SocketType.Stream, ProtocolType.Tcp)
{
NoDelay = true
};
await socket.ConnectAsync(IPAddress.Loopback, ServerPort);
return new NetworkStream(socket, ownsSocket: true);
}
}
}