[lwip-users] TCP messages are not being recieved

[saad saeed]

Hello,

I have a problem which I want to share with you.

I have TCP server which has the maximum capibility to handle 9 connections.

At my client side I am first creating the connection like this

connect(s1)

connect(s2)

connect(s3)

.

.

.

.

.

connect(s9)

Than I am sending the messages

Send(s1,mess) //Receives and get acknowledge

Send(s2,mess) //Receives and get knowledge

Send (s3,mess) //Received on server  side because the led blinks and also client is confirming that message has been send but lwIP not able to process the message

Send (s4,mess) //Received on server  side because the led blinks and also client is confirming that message has been send but lwIP not able to process the message

Send (s5,mess) //Received on server  side because the led blinks and also client is confirming that message has been send but lwIP not able to process the message

Send (s6,mess) //Received on server  side because the led blinks and also client is confirming that message has been send but lwIP not able to process the message

Send (s7,mess) //Received on server  side because the led blinks and also client is confirming that message has been send but lwIP not able to process the message

Send (s8,mess) //Received on server  side because the led blinks and also client is confirming that message has been send but lwIP not able to process the message

Send (s9,mess) //Received on server  side because the led blinks and also client is confirming that message has been send but lwIP not able to process the message

Now the interesting thing

On my client side I changed a few things instead of connecting all the sockets first and then sending it I did this

connect(s1)

Send(s1,mess) //Receives and get acknowledge

connect(s2)

Send(s2,mess) //Receives and get knowledge

connect(s3)

Send(s3,mess) //Receives and get knowledge

connect(s4)

Send(s4,mess) //Receives and get knowledge

connect(s5)

Send(s5,mess) //Receives and get knowledge

connect(s6)

Send(s6,mess) //Receives and get knowledge

connect(s7)

Send(s7,mess) //Receives and get knowledge

connect(s8)

Send(s8,mess) //Receives and get knowledge

connect(s9)

Send(s9,mess) //Receives and get knowledge

Why is this happening? What is causing this

I am using lwIP 2.1.2 withh FreeRTOS V8.2.1. The board is s32k148

Waiting for your reply

Regards,

Saad.