IOException thrown by BinaryFormatter.Deserialize

**Ignacio Machin \( .NET/ C# MVP \)** · Nov 17 '05, 07:44 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi,

Must probably it's cause the networkstream ends without further notice (
probably cause the client sent all the data and closed the connection ) .

Try to do this, copy the networkstream to a memorystream, later deserialize
from that memory stream.

Do you by any chance send the size first?

cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"Sharon" <Sharon@discuss ions.microsoft. com> wrote in message
news:14EF7D65-E2A4-4213-9731-324221AC8EA0@mi crosoft.com...[color=blue]
> Hi,
>
> When I'm doing BinaryFormatter .Deserialize() over a TCP socket. When I'm
> closing the TcpListener by invoking the TcpListener.Sto p(); I get:
>
> System.IO.IOExc eption with message "Unable to read data from the
> transport
> connection." that InnerException of type
> System.Net.Sock ets.SocketExcep tion
> saying "An established connection was aborted by the software in your host
> machine".
>
> The code I'm using is (it's not the complete code because the complete
> code
> is very long and threaded):
> -------------------------------------------------------------
> string serverIP = "some IP address";
> int port = 3001;
>
> TcpListener m_server;
> m_server = new TcpListener( System.Net.IPAd dress.Parse(ser verIP), port );
>
> Socket m_socket = m_server.Accept Socket();
>
> System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er formatter =
> new System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er();
>
> while( true )
> {
> NetworkStream networkStream = new NetworkStream(m _socket);
> MyObjectType obj = formatter.Deser ialize(networkS tream) as
> MyObjectType;
> // throw the IOException when the TcpListener is closed by
> TcpListener.Sto p();
> }
> -------------------------------------------------------------
>
> Can anybody tell me how to avoid this exception?
>
>
> ---------
> Thanks
> Sharon[/color]

**Sharon** · Nov 17 '05, 07:46 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Thanks Ignacio,

The client (the side that does the Serialize) is not closing the socket.
The IOException is thrown when I'm doing the stop on the server side (the
side that does the Deserialize).

The while loop is already Deserialized 30 MyObjectType objects, and this all
the objects that has been Serialized to the socket on the other side.

Can you post a sample code explaining what you want me to check?

No, I'm not sending any size first, I simply doing this:

string serverIP = "The server IP";
int port = 3001;
Socket m_socket = new Socket(AddressF amily.InterNetw ork, SocketType.Stre am,
ProtocolType.Tc p);
System.Net.IPEn dPoint ep = new
System.Net.IPEn dPoint(System.N et.IPAddress.Pa rse(serverIP ), port);
System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er formatter =
new System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er();
NetworkStream networkStream = new NetworkStream(m _socket);
foreach( MyObjectType obj in myObjectTypeLis t )
{
formatter.Seria lize(networkStr eam, obj);
}
// waiting...

Any idea?

-----
Thanks
Sharon

**Ignacio Machin \( .NET/ C# MVP \)** · Nov 17 '05, 07:47 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi,

I had a similar situation, the problem it seems that the client send the
data and just close the connection, sometimes even without sending all the
data, ( there is a property of TcpClient.Linge rState that control this) and
the server side was reporting the same error you are seeing.

Do this test, use a memorystream to read the data , use
NetworkStream.D ataAvailable , see the example in the help, or you could just
read a byte at a time:

MemoryStream mem = new MemoryStream()
int b=-1;
while( (b=networkstrea m.ReadByte()) != -1 )
mem.WriteByte( (byte)b);

cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"Sharon" <Sharon@discuss ions.microsoft. com> wrote in message
news:3B6E8F2E-66D6-464A-AB56-3946CA574289@mi crosoft.com...[color=blue]
> Thanks Ignacio,
>
> The client (the side that does the Serialize) is not closing the socket.
> The IOException is thrown when I'm doing the stop on the server side (the
> side that does the Deserialize).
>
> The while loop is already Deserialized 30 MyObjectType objects, and this
> all
> the objects that has been Serialized to the socket on the other side.
>
> Can you post a sample code explaining what you want me to check?
>
> No, I'm not sending any size first, I simply doing this:
>
> string serverIP = "The server IP";
> int port = 3001;
> Socket m_socket = new Socket(AddressF amily.InterNetw ork,
> SocketType.Stre am,
> ProtocolType.Tc p);
> System.Net.IPEn dPoint ep = new
> System.Net.IPEn dPoint(System.N et.IPAddress.Pa rse(serverIP ), port);
> System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er formatter =
> new System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er();
> NetworkStream networkStream = new NetworkStream(m _socket);
> foreach( MyObjectType obj in myObjectTypeLis t )
> {
> formatter.Seria lize(networkStr eam, obj);
> }
> // waiting...
>
>
> Any idea?
>
> -----
> Thanks
> Sharon[/color]

**Ignacio Machin \( .NET/ C# MVP \)** · Nov 17 '05, 07:47 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi,

An extra question, you said that it already had 30 objects deserialized ,
how many are you sending? 31?

cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"Sharon" <Sharon@discuss ions.microsoft. com> wrote in message
news:3B6E8F2E-66D6-464A-AB56-3946CA574289@mi crosoft.com...[color=blue]
> Thanks Ignacio,
>
> The client (the side that does the Serialize) is not closing the socket.
> The IOException is thrown when I'm doing the stop on the server side (the
> side that does the Deserialize).
>
> The while loop is already Deserialized 30 MyObjectType objects, and this
> all
> the objects that has been Serialized to the socket on the other side.
>
> Can you post a sample code explaining what you want me to check?
>
> No, I'm not sending any size first, I simply doing this:
>
> string serverIP = "The server IP";
> int port = 3001;
> Socket m_socket = new Socket(AddressF amily.InterNetw ork,
> SocketType.Stre am,
> ProtocolType.Tc p);
> System.Net.IPEn dPoint ep = new
> System.Net.IPEn dPoint(System.N et.IPAddress.Pa rse(serverIP ), port);
> System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er formatter =
> new System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er();
> NetworkStream networkStream = new NetworkStream(m _socket);
> foreach( MyObjectType obj in myObjectTypeLis t )
> {
> formatter.Seria lize(networkStr eam, obj);
> }
> // waiting...
>
>
> Any idea?
>
> -----
> Thanks
> Sharon[/color]

**Sharon** · Nov 17 '05, 07:48 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi Ignacio,

That's exactly the point, I'm Serialize 30 objects and getting them all at
the deserializing side.
So all the data was sent successfully.
But still I get this exception when closing the TcpListener.

What do you think.

--------
Thanks
Sharon

**Ignacio Machin \( .NET/ C# MVP \)** · Nov 17 '05, 07:52 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi Sharon,

I have a similar problem

DO this, Check the InnerException to see what it contains, if so what is
the ErrorCode you are getting?

cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"Sharon" <Sharon@discuss ions.microsoft. com> wrote in message
news:0D635B48-720D-4493-A065-A64F878A0F04@mi crosoft.com...[color=blue]
> Hi Ignacio,
>
> That's exactly the point, I'm Serialize 30 objects and getting them all at
> the deserializing side.
> So all the data was sent successfully.
> But still I get this exception when closing the TcpListener.
>
> What do you think.
>
> --------
> Thanks
> Sharon[/color]

**Sharon** · Nov 17 '05, 08:01 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi Ignacio,

Ok,
The top exception is System.IO.IOExc eption {"Unable to read data from the
transport connection."}, and it contains an inner exception
System.Net.Sock ets.SocketExcep tion {"An established connection was aborted by
the software in your host machine"}

NativeErrorCode = 10053

Stack trace:

System.Net.Sock ets.NetworkStre am.Read(Byte[] buffer, Int32 offset, Int32 size)
System.IO.Strea m.ReadByte()
at System.IO.Binar yReader.FillBuf fer(Int32 numBytes)
System.IO.Binar yReader.ReadByt e()
System.Runtime. Serialization.F ormatters.Binar y.__BinaryParse r.ReadByte(
System.Runtime. Serialization.F ormatters.Binar y.Serialization HeaderRecord.Re ad(__BinaryPars er input
System.Runtime. Serialization.F ormatters.Binar y.__BinaryParse r.ReadSerializa tionHeaderRecor d()
System.Runtime. Serialization.F ormatters.Binar y.__BinaryParse r.Run()
System.Runtime. Serialization.F ormatters.Binar y.ObjectReader. Deserialize(Hea derHandler
handler, __BinaryParser serParser, Boolean fCheck, IMethodCallMess age
methodCallMessa ge)
System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er.Deserialize( Stream
serializationSt ream, HeaderHandler handler, Boolean fCheck,
IMethodCallMess age methodCallMessa ge
System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er.Deserialize( Stream serializationSt ream, HeaderHandler handler
System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er.Deserialize( Stream serializationSt ream)

I hope it gives you what you need.

---------------
Thanks again
Sharon

**Steven Cheng** · Nov 17 '05, 08:37 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi Sharon,

Seems there are something else cause the formatter to read further data from
the NetworkStream after you've close the Tcp connection. Have you tried using
NetworkStream.c lose() method to close both the stream and the underlying Tcp
connection? Also, I think Ignacio's suggestion on using a memory stream to
temporarly hold the binary data is also a considerable means for testing.

Please feel free to post here if you got any further finding.

Thanks,

Steven Cheng

"Sharon" wrote:
[color=blue]
> Hi Ignacio,
>
> Ok,
> The top exception is System.IO.IOExc eption {"Unable to read data from the
> transport connection."}, and it contains an inner exception
> System.Net.Sock ets.SocketExcep tion {"An established connection was aborted by
> the software in your host machine"}
>
> NativeErrorCode = 10053
>
> Stack trace:
>
> System.Net.Sock ets.NetworkStre am.Read(Byte[] buffer, Int32 offset, Int32 size)
> System.IO.Strea m.ReadByte()
> at System.IO.Binar yReader.FillBuf fer(Int32 numBytes)
> System.IO.Binar yReader.ReadByt e()
> System.Runtime. Serialization.F ormatters.Binar y.__BinaryParse r.ReadByte()
> System.Runtime. Serialization.F ormatters.Binar y.Serialization HeaderRecord.Re ad(__BinaryPars er input)
> System.Runtime. Serialization.F ormatters.Binar y.__BinaryParse r.ReadSerializa tionHeaderRecor d()
> System.Runtime. Serialization.F ormatters.Binar y.__BinaryParse r.Run()
> System.Runtime. Serialization.F ormatters.Binar y.ObjectReader. Deserialize(Hea derHandler
> handler, __BinaryParser serParser, Boolean fCheck, IMethodCallMess age
> methodCallMessa ge)
> System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er.Deserialize( Stream
> serializationSt ream, HeaderHandler handler, Boolean fCheck,
> IMethodCallMess age methodCallMessa ge)
> System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er.Deserialize( Stream serializationSt ream, HeaderHandler handler)
> System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er.Deserialize( Stream serializationSt ream)
>
>
> I hope it gives you what you need.
>
>
> ---------------
> Thanks again
> Sharon[/color]

**Steven Cheng** · Nov 17 '05, 08:37 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi Sharon,

Seems there are something else cause the formatter to read further data from
the NetworkStream after you've close the Tcp connection. Have you tried using
NetworkStream.c lose() method to close both the stream and the underlying Tcp
connection? Also, I think Ignacio's suggestion on using a memory stream to
temporarly hold the binary data is also a considerable means for testing.

Please feel free to post here if you got any further finding.

Thanks,

Steven Cheng

"Sharon" wrote:
[color=blue]
> Hi Ignacio,
>
> Ok,
> The top exception is System.IO.IOExc eption {"Unable to read data from the
> transport connection."}, and it contains an inner exception
> System.Net.Sock ets.SocketExcep tion {"An established connection was aborted by
> the software in your host machine"}
>
> NativeErrorCode = 10053
>
> Stack trace:
>
> System.Net.Sock ets.NetworkStre am.Read(Byte[] buffer, Int32 offset, Int32 size)
> System.IO.Strea m.ReadByte()
> at System.IO.Binar yReader.FillBuf fer(Int32 numBytes)
> System.IO.Binar yReader.ReadByt e()
> System.Runtime. Serialization.F ormatters.Binar y.__BinaryParse r.ReadByte()
> System.Runtime. Serialization.F ormatters.Binar y.Serialization HeaderRecord.Re ad(__BinaryPars er input)
> System.Runtime. Serialization.F ormatters.Binar y.__BinaryParse r.ReadSerializa tionHeaderRecor d()
> System.Runtime. Serialization.F ormatters.Binar y.__BinaryParse r.Run()
> System.Runtime. Serialization.F ormatters.Binar y.ObjectReader. Deserialize(Hea derHandler
> handler, __BinaryParser serParser, Boolean fCheck, IMethodCallMess age
> methodCallMessa ge)
> System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er.Deserialize( Stream
> serializationSt ream, HeaderHandler handler, Boolean fCheck,
> IMethodCallMess age methodCallMessa ge)
> System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er.Deserialize( Stream serializationSt ream, HeaderHandler handler)
> System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er.Deserialize( Stream serializationSt ream)
>
>
> I hope it gives you what you need.
>
>
> ---------------
> Thanks again
> Sharon[/color]

**Sharon** · Nov 17 '05, 08:40 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi Steven,

When I'm closing I'm first doing:
TcpListener.Sto p();

And then:
Socket.Close();

And when Iâ€™m catching the IOException (thrown by the
formatter.Deser ialize(networkS tream)) Iâ€™m doing on a finally block:
NetworkStream.C lose();

Should I do it differently?

--------
Thanks
Sharon

**Sharon** · Nov 17 '05, 08:40 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi Steven,

When I'm closing I'm first doing:
TcpListener.Sto p();

And then:
Socket.Close();

And when Iâ€™m catching the IOException (thrown by the
formatter.Deser ialize(networkS tream)) Iâ€™m doing on a finally block:
NetworkStream.C lose();

Should I do it differently?

--------
Thanks
Sharon

**Peter Huang [MSFT]** · Nov 17 '05, 08:40 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi

Here is a KB may related with your problem.

PRB: TcpClient Close Method Does Not Close the Underlying TCP Connection

Microsoft Support

http://support.microsoft.com/?id=821625

Microsoft Support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows 11, Surface, and more.

Also I suggest you try to use the syntax something like below to receive
the network stream.

[pseudocode]
try
{
Int32 port = 13000;
TcpListener server = new TcpListener(por t);
server.Start();
Byte[] bytes = new Byte[256];
while(true)
{
Console.Write(" Waiting for a connection... ");
TcpClient client = server.AcceptTc pClient();
Console.WriteLi ne("Connected!" );
data = null;
NetworkStream stream = client.GetStrea m();
Int32 i;
int pos=0;
MemoryStream ms = new MemoryStream();
while((i = stream.Read(byt es, 0, bytes.Length))! =0)
{
ms.Write(bytes, pos,i);
pos +=i;
}
stream.Close();
client.Close();
}
}
catch(SocketExc eption e)
{
Console.WriteLi ne("SocketExcep tion: {0}", e);
}
//Handle the Deserial here.
Console.WriteLi ne("\nHit enter to continue...");
Console.Read();
//Close the listener.
tcpListener.Sto p();
}

Best regards,

Peter Huang
Microsoft Online Partner Support

Get Secure! - www.microsoft.com/security
This posting is provided "AS IS" with no warranties, and confers no rights.

**Sharon** · Nov 17 '05, 08:40 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi Peter,

Thanks for your reply.

From your replay I have 2 questions:
(1) The transportation speed is most important to me, so I thought using the
TcpListener.Acc eptSocket() will be best.
Why should I use the TcpListener.Acc eptTcpClient() instead the
AcceptSocket()? Is it better or preferred?

(2) In the code you have posted; the:
MemoryStream ms = new MemoryStream();
while((i = stream.Read(byt es, 0, bytes.Length))! =0)
{
ms.Write(bytes, pos,i);
pos +=i;
}

For what is it good for?
Why are you using the MemoryStream?
As I posted, Iâ€™m using the BinaryFormatter .Deserialize(ne tworkStream). How
should I use it now in reference to your suggested code?

--------
Thanks
Sharon

**Sharon** · Nov 17 '05, 08:40 AM

Re: IOException thrown by BinaryFormatter .Deserialize

Hi again Peter,

I have changed my code as you suggested to something like that
///////////////////////////////////////////////////////////////////////////////
TcpListener tcpListener = new TcpListener(
System.Net.IPAd dress.Parse(ser verIP), port );
TcpClient tcpClient = tcpListener.Acc eptTcpClient();

System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er formatter =
new System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er();
NetworkStream networkStream = m_tcpClient.Get Stream();

myClassType myClass = null;
int count = 30;
while( count != 0 )
{
myClass = formatter.Deser ialize(networkS tream) as myClassType;
++count;
}

tcpListener.Sto p();
networkStream.C lose();
tcpClient.Close ()
///////////////////////////////////////////////////////////////////////////////

But now when the tcpListener.Sto p() is invoked, the formatter.Deser ialize()
throws
SerializationEx ception{"End of Stream encountered before parsing was
completed."}
But all the myClass objects that are sent are received successfully.

Iâ€™m not if this error is better then the IOException I had before.

What do you think?

--------
Thanks
Sharon

IOException thrown by BinaryFormatter.Deserialize

IOException thrown by BinaryFormatter.Deserialize

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