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Asynchronous Socket Client always connected

Hi

I write dll library which one of it component will be Net socket
communication. Communication is working very good, but i've got problem when
client is connecting. When server is started, client is connecting without
problems; but when servre is down and i start client, client connect to
server!
Few lines from code:

client.Socket = new Socket(AddressF amily.InterNetw ork, SocketType.Stre am,
ProtocolType.Tc p);
client.Socket.B eginConnect(cli ent.EndPoint, new
AsyncCallback(C lient_ConnectCa llback), client);

and in callback

client.Socket.E ndConnect(ar);

Of course client.Socket.C onnected is after callback set to true.

What is strange when i call :

client.Socket.B eginSend(msg.Da ta, 0, msg.Data.Length , SocketFlags.Non e, new
AsyncCallback(C lient_SendCallb ack), client);
there is no problems.

Receive of course doesn't work.

I execute netstat.exe and connection is alive. So where is this client
connected?

Maybe somebody knew how to test this connection, or how to check this
connection is alive and working?

Of course i can check, that some data was received - but i cannot asure that
some data will be received in some time period.

regards

Kuba Florczyk
Jul 21 '05 #1
2 2512
remove it :

client.Socket.E ndConnect(ar);
news.microsoft. com wrote:
Hi

I write dll library which one of it component will be Net socket
communicatio n. Communication is working very good, but i've got problem when
client is connecting. When server is started, client is connecting without
problems; but when servre is down and i start client, client connect to
server!
Few lines from code:

client.Socke t = new Socket(AddressF amily.InterNetw ork, SocketType.Stre am,
ProtocolType.T cp);
client.Socket. BeginConnect(cl ient.EndPoint, new
AsyncCallback( Client_ConnectC allback), client);

and in callback

client.Socket. EndConnect(ar);

Of course client.Socket.C onnected is after callback set to true.

What is strange when i call :

client.Socket. BeginSend(msg.D ata, 0, msg.Data.Length , SocketFlags.Non e, new
AsyncCallback( Client_SendCall back), client);
there is no problems.

Receive of course doesn't work.

I execute netstat.exe and connection is alive. So where is this client
connected?

Maybe somebody knew how to test this connection, or how to check this
connection is alive and working?

Of course i can check, that some data was received - but i cannot asure that
some data will be received in some time period.

regards

Kuba Florczyk


Jul 21 '05 #2
Why? What that will change?

kuba
remove it :

client.Socket.E ndConnect(ar);
news.microsoft. com wrote:
Hi

I write dll library which one of it component will be Net socket
communicatio n. Communication is working very good, but i've got problem whenclient is connecting. When server is started, client is connecting withoutproblems; but when servre is down and i start client, client connect to
server!
Few lines from code:

client.Socke t = new Socket(AddressF amily.InterNetw ork, SocketType.Stre am,
ProtocolType.T cp);
client.Socket. BeginConnect(cl ient.EndPoint, new
AsyncCallback( Client_ConnectC allback), client);

and in callback

client.Socket. EndConnect(ar);

Of course client.Socket.C onnected is after callback set to true.

What is strange when i call :

client.Socket. BeginSend(msg.D ata, 0, msg.Data.Length , SocketFlags.Non e, newAsyncCallback( Client_SendCall back), client);
there is no problems.

Receive of course doesn't work.

I execute netstat.exe and connection is alive. So where is this client
connected?

Maybe somebody knew how to test this connection, or how to check this
connection is alive and working?

Of course i can check, that some data was received - but i cannot asure thatsome data will be received in some time period.

regards

Kuba Florczyk

Jul 21 '05 #3

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