how to decode messages from tcp/ip using asp.net ?

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I am Working On Typical tcp Client Server Application Where Server Continuously Sends The Messages To Client And Client In turn Sends Ack/Nak as Response To Server . Now I want To Decode The Message Received From The Server In Client Application . How Can I do that Using .net FrameWork?

Posted 8-Sep-14 21:03pm

Mohan D Kishore

Updated 8-Sep-14 21:05pm

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Herman<T>.Instance 9-Sep-14 4:31am

use a TcpListener for that

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jadavparesh06 · Answer 1 · 2014-09-09T00:21:00

The message received at client end will be in term of bytes array.

You will need to decrypt this byte array in normal string.

see below.

string resultingString = Encoding.ASCII.GetString(receivedEncodedBytes, 0 , receivedEncodedBytes.Count);

here receivedEncodedBytes is a byte array received in tcp Client.

Note: If there is anyother encoding format(other than Encoding.ASCII) is being used at server end you will also need to use the same format at client side.

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 2 · 2014-09-09T00:57:00

Solution 2

Refer - A Network Sniffer in C#[^]. It might be helpful.

Posted 9-Sep-14 0:57am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Mohan D Kishore · Answer 3 · 2014-09-22T19:12:00

CSocketPacket theSockId = (CSocketPacket)asyn.AsyncState;
//end receive...
int iRx = 0;
iRx = theSockId.thisSocket.EndReceive(asyn);
char[] chars = new char[iRx + 1];
System.Text.Decoder d = System.Text.Encoding.UTF8.GetDecoder();
int charLen = d.GetChars(theSockId.dataBuffer, 0, iRx, chars, 0);
System.String szData = new System.String(chars);

how to decode messages from tcp/ip using asp.net ?

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