[FASTCGI] EAGAIN error in socket_send()[mod_fastcgi-2.4.6] call

Santosh Mankar mankar.san at gmail.com
Tue Sep 25 02:04:27 EDT 2012

Hi All,

I am using httpd-2.2.22/mod_fastcgi-2.4.6/fcgi-2.4.0 on Solaris10 OS.
some times I am getting EAGAIN error in socket_send() call present in
mod_fastcgi-2.4.6 and file name is fcgi_buf.c.

code for socket_send() function is as follows:

static int socket_send(int fd, char * buf, int len)
    int bytes_sent;
    do {
        bytes_sent = write(fd, buf, len);
        if (bytes_sent < 0)
            ASSERT(errno != EWOULDBLOCK);
#ifdef EAGAIN
            ASSERT(errno != EAGAIN);
    while (bytes_sent == -1 && errno == EINTR);
    return bytes_sent;

I dont want to abort sending data if EAGAIN error pops up.
Can we handle EAGAIN/EWOULDBLOCK error and continue with the loop?
same case present for sock_recv() call also.

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