send() always interrupted by EPIPE
- by Manuel Abeledo
I've this weird behaviour in a multithreaded server programmed in C under GNU/Linux. While it's sending data, eventually will be interrupted by SIGPIPE. I managed to ignore signals in send() and treat errno after each action because of it.
So, it has two individual sending methods, one that sends a large amount of data at once (or at least tries to), and another that sends a nearly similar amount and slices it in little chunks. Finally, I tried with this to keep it sending data.
do
{
total_bytes_sent += send(client_sd, output_buf + total_bytes_sent,
output_buf_len - total_bytes_sent, MSG_NOSIGNAL);
}
while ((total_bytes_sent < output_buf_len) && (errno != EPIPE));
This ugly piece of code does its work in certain situations, but not always.
I'm pretty sure it's not a hardware or ISP problem, as this server is running in six european servers, four in Germany and two in France.
Any ideas?
Thanks in advance.
