NDK TCP/IP Socket Connection Refused

Brandon Rivera

Prodigy 70 points

Other Parts Discussed in Thread: TM4C129ENCPDT

Hello, here is some basic information on my setup:

Microcontroller: Tiva TM4C129ENCPDT

IDE: CCS 6.1.0.00104

SYS/Bios Version: 6.41.00.26

TI NDK Version: 2.24.00.11

I have a task that creates 6 sockets on unique port numbers and listens on these ports.

I then use fd_poll to accept incoming connections and to also receive data from them.

I can successfully accept and receive on up to 4 sockets, but when I try to connect the 5th I receive a "Connection Refused" error on my client PC.

It doesn't matter what combination of ports I connect to , it always fails on the 4th one.

It looks like fd_poll is never tripped after the first 4 connections.

I still have plenty of free heap memory according to the ROV capture below.

The NDK Stack Thread also has more than enough memory it seems.

I have set Ip.socketMaxConnections= 10.

I am still a novice when it comes to NDK, any help would be appreciated.

over 9 years ago

0 Tom Kopriva over 9 years ago

TI__Mastermind 20480 points

Brandon,

are you checking the return value of accept()? Is it failing on accept() by any chance?

0 Brandon Rivera over 9 years ago in reply to Tom Kopriva

Prodigy 70 points

Hi Tom,

Thanks for the reply.

My task uses an fd_poll to poll all of the sockets listening on different ports numbers.
After the initial 4 connections, the fd_poll function never signals an event and it just keeps blocking when a new client tries to connect.
This causes my task to never reach the accept function.

0 wangkangjing over 9 years ago in reply to Brandon Rivera

Prodigy 50 points

Execuse me.
I am trying to build a application which using NDK, I have try to test the examples in SDK,
turned out to be no working.
Would you send a copy of your project with NDK to me for consideration?
or send a capture that I can tell the construction of your project.

I really appreciate that.
Best Regards.
wang

0 Brandon Rivera over 9 years ago in reply to Tom Kopriva

Prodigy 70 points

Hi, I just wanted to see if anyone had any suggestions.
I'm still having the same problem.

Thanks,

Brandon

0 Steven Connell over 9 years ago in reply to Brandon Rivera

TI__Mastermind 45025 points

Hi Brandon,

Can you please share some of the code for this? In particular, your sockets code and call to fd_poll?

If you don't want to share it publicly, just send me a friend request on the forums. Then once we're friends, you can send me files privately.

Steve

0 Brandon Rivera over 9 years ago in reply to Steven Connell

Prodigy 70 points

Hi Steven,

Thank you for the reply, but I was able to figure out the problem.
I wasn't allocating enough memory buckets for NDK in the configuration file.

Brandon

Processors

Processors forum

NDK TCP/IP Socket Connection Refused