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[lwip-users] Problems getting a basic example running
From: |
Fre Net |
Subject: |
[lwip-users] Problems getting a basic example running |
Date: |
Tue, 24 Jul 2012 18:35:14 -0700 |
Hi,I just started looking at the lwip stack and was trying to build a simple console app that would create a udp socket and fire off some data.
I am using Ubuntu 10.04 on a desktop PC and want to use the sockets api (lwip 1.4.0 & contrib files 1.4.0). I felt that this would be the simplest way to start off. Eventually I would like to move over to our ARM board running Ubuntu.
I am getting errors when initially trying to create the udp socket. This is the code:
int sockfd;
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
perror("socket?");
exit(1);
}
This is the error message:
lwip_socket(PF_INET, SOCK_DGRAM, 0) = -1 / ENOBUFS (could not create netconn)
I have also tried incorporating the socket_examples functions in the contrib package in a simple app and get the same error. I've enabled udp and tcip in my options file. Is there another option that I have overlooked? Does anyone have an example of a basic app that creates a udp socket and sends some data? If there is any other info that I can provide, let me know.
Thanks,
Fred
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