Packets not sending properly

[selvialagar]

When i sent a packet with size less than 15 it will sent.But when i sent a packet greater than that it won't sent.Sometimes, it will sent greater than 15.Sometimes won't.What is the reason for that? Plz give me some solutions...

[Nepomuk]

When i sent a packet with size less than 15 it will sent.But when i sent a packet greater than that it won't sent.Sometimes, it will sent greater than 15.Sometimes won't.What is the reason for that? Plz give me some solutions...

How are you trying to send these packages? The problem could be one of many, and without further information, we'd be looking for the famous needle in a haystack.

Greetings,
Nepomuk

[Arulmurugan]

Hi,
Packet size less than 15 means, i am not getting. Is it 15 bytes.
If it is 15 bytes, i don't understand why it is not working for you. Is it program you wrote or some other application?
Regards,
Arul

[selvialagar]

Hi,
Packet size less than 15 means, i am not getting. Is it 15 bytes.
If it is 15 bytes, i don't understand why it is not working for you. Is it program you wrote or some other application?
Regards,
Arul

short Sender::SendDataSync(Byte SendBuffer[])
    {
    try
    {
    this->writer->Write(SendBuffer);
String *str=Sender::BytesToUnicodeStringWC(SendBuffer,SendBuffer->Count);    Sender::LogData(String::Concat("Sent : ",str), S"log");
    SendBuffer=0;
              }//try
}
 

in SendBuffer, i have the data to send.If i have more tha 16 bytes of data, SendBuffer has that much of data.
But this->writer->Write(SendBuffer) will send only 16 bytes of data.here writer specifies BinaryWriter.When I check with network monitor, the data send will be 16 bytes.. What is the reason for that?

[arnaudk]

Exactly which networking library are you using?

[selvialagar]

Sir,
I am using System::Net::Sockets.

BinaryWriter *writer;
TcpClient *client;
NetworkStream *clientStream;
 
Sender *sockWriter;
Sender *localSocketWriter;
 
Sender::Sender(NetworkStream *clientStream)
    {
        this->clientStream =clientStream;
        this->writer=new BinaryWriter(this->clientStream);
    }
 
sockWriter=new Sender();
sockWriter->client =new TcpClient();
sockWriter->client->Connect(this->hostName,this->port_number);   
sockWriter->clientStream=sockWriter->client->GetStream();
localSocketWriter=new Sender(this->sockWriter->clientStream);
 

Establishing TCP communication using TCPClient().Connection established successfully.When i sent authentication packet, the device accept authentication request and replies back.When I want to send a packet with 28 bytes(header 4 bytes,payload 24 bytes),it will send only 16 bytes(header 4 bytes and payload 12 bytes).I dont know where the remaining dats resides.But after sending the data, when i check the buffer(SendBuffer) it contains all the data.Why?What is actually happend in that?..

[arnaudk]

I am using System::Net::Sockets.

I think you'll have more luck on the .NET forum then.

[selvialagar]

hi......

I solved this problem. The problem is, the window size. When the destination ackowledges my packet, it sends its window size as 16. That's why, 16 bytes are taken by the destination.Now i corrected it, and it works fine.


Thanks for your valuable replies.