/// <summary>
/// Reads a packet from the given <see cref="INetworkMessage"/>.
/// </summary>
/// <param name="message">The message to read from.</param>
/// <returns>The packet read from the message.</returns>
public override IIncomingPacket ReadFromMessage(INetworkMessage message)
{
message.ThrowIfNull(nameof(message));
// OS and Version were included plainly in this version
var operatingSystem = message.GetUInt16();
var version = message.GetUInt16();
// Skip dat, spr, and pic signatures (4 bytes each)?
message.SkipBytes(12);
var targetSpan = message.Buffer[message.Cursor..message.Length];
public void NetworkMessage_SkipBytesTest()
{
const int SkipCount = 10;
const int NegativeSkipCount = -1;
const int OutOfRangeSkipCountSize = NetworkMessage.BufferSize + 1;
const int ExpectedCursorOnTestSetup = 0;
const int ExpectedLengthOnTestSetup = DefaultTestBufferIncomingMessageLength;
const int ExpectedCursorAfterSkip = SkipCount;
const int ExpectedLengthAfterSkip = ExpectedLengthOnTestSetup;
byte[] expectedBytesRead = DefaultTestBufferAsBytes.Skip(SkipCount).ToArray();
// Do reset the cursor, since we're in "reading" mode.
INetworkMessage testMessage1 = this.SetupInboundMessage(resetCursor: true);
Assert.IsNotNull(testMessage1);
Assert.AreEqual(ExpectedCursorOnTestSetup, testMessage1.Cursor);
Assert.AreEqual(ExpectedLengthOnTestSetup, testMessage1.Length);
ExceptionAssert.Throws <ArgumentException>(() => testMessage1.SkipBytes(NegativeSkipCount), "The count must not be negative.");
ExceptionAssert.Throws <IndexOutOfRangeException>(() => testMessage1.SkipBytes(OutOfRangeSkipCountSize), "SkipBytes out of range.");
testMessage1.SkipBytes(0);
// These should not change on skip 0.
Assert.AreEqual(ExpectedCursorOnTestSetup, testMessage1.Cursor);
Assert.AreEqual(ExpectedLengthOnTestSetup, testMessage1.Length);
testMessage1.SkipBytes(SkipCount);
// Now they should have changed.
Assert.AreEqual(ExpectedCursorAfterSkip, testMessage1.Cursor);
Assert.AreEqual(ExpectedLengthAfterSkip, testMessage1.Length);
var bytesInfoRead = testMessage1.ReadAsBytesInfo();
Assert.IsNotNull(bytesInfoRead?.Bytes);
CollectionAssert.AreEqual(expectedBytesRead, bytesInfoRead.Bytes);
}
