C#•9mo ago

✅ Unable to read beyond the end of the stream.

Hello, i have error : Unable to read beyond the end of the stream. at line "short hiheader = reader.ReadInt16();" do you know for what ? thanks

IPAddress ipAddress = IPAddress.Parse("127.0.0.1");
IPEndPoint ipEndPoint = new IPEndPoint(ipAddress, 5555);

using Socket listener = new Socket(ipEndPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);

listener.Bind(ipEndPoint);
listener.Listen(100);
Console.WriteLine("Serveur démarré, en attente du client...");

var handler = await listener.AcceptAsync(); // Connexion du client
Console.WriteLine($"Client : \"{ipAddress.MapToIPv4()}\" sur le port : \"{ipEndPoint.Port}\" connecté au serveur.");


MemoryStream memoryStream = new MemoryStream();
var buffer = new byte[1024];

while (true)
{
    int byteReceived = await handler.ReceiveAsync(buffer, SocketFlags.None);

    if(byteReceived > 0)
    {
        memoryStream.Write(buffer, 0, byteReceived);
    }
    else
    {
        break;
    }

    BinaryReader reader = new BinaryReader(memoryStream);

-    short hiheader = reader.ReadInt16(); // HiHeader (2octets) = packetId (8bits) + lenType (6bits)
    short packetId = ((short)(hiheader >> 2)); 
    short lenType = ((short)(hiheader & 3));

IPAddress ipAddress = IPAddress.Parse("127.0.0.1");
IPEndPoint ipEndPoint = new IPEndPoint(ipAddress, 5555);

using Socket listener = new Socket(ipEndPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);

listener.Bind(ipEndPoint);
listener.Listen(100);
Console.WriteLine("Serveur démarré, en attente du client...");

var handler = await listener.AcceptAsync(); // Connexion du client
Console.WriteLine($"Client : \"{ipAddress.MapToIPv4()}\" sur le port : \"{ipEndPoint.Port}\" connecté au serveur.");


MemoryStream memoryStream = new MemoryStream();
var buffer = new byte[1024];

while (true)
{
    int byteReceived = await handler.ReceiveAsync(buffer, SocketFlags.None);

    if(byteReceived > 0)
    {
        memoryStream.Write(buffer, 0, byteReceived);
    }
    else
    {
        break;
    }

    BinaryReader reader = new BinaryReader(memoryStream);

-    short hiheader = reader.ReadInt16(); // HiHeader (2octets) = packetId (8bits) + lenType (6bits)
    short packetId = ((short)(hiheader >> 2)); 
    short lenType = ((short)(hiheader & 3));

4 Replies

JakenVeina•9mo ago

do you know for what

for attempting to read beyond the end of the stream, perhaps?

WEIRD FLEX•9mo ago

maybe the stream ended?

Pheubel•9mo ago

my guess is that when you are trying to read from the memory stream, you are actually past the data you want to read out. Have a look at the Position property of your memory stream. my guess is that if the position is at 0, then it will work fine.
https://learn.microsoft.com/en-us/dotnet/api/system.io.memorystream?view=net-7.0

MemoryStream Class (System.IO)

Creates a stream whose backing store is memory.

WEIRD FLEX•9mo ago

oh yeah, you probably have to seek to beginning

Gaming

Programming

✅ Unable to read beyond the end of the stream.