Hello, Using gnutls_record_check_pending() to check for received data in a function that sleeps a few times if no data present:
ie.
if (esmtpInfo.gnutls.ringBuffer.currentIndex ==
0){//ringbuffer empty, look for more data
int count = 0;
int loop = 0;
do { //add sleep function call here
loop++;
sleep( INTERNET_DEFAULT_TIMEOUT_SECONDS );
count = gnutls_record_check_pending(
esmtpInfo.gnutls.session );
//count =
esmtpInfo.gnutls.session->internals.record_buffer.byte_length;
}while ( count <= 0 && loop < 3 );
if (count > 0) return NMQ_SUCCESS;
if ( count == 0) return NMQ_NET_TIMEOUT;
}
Using this in multi-threaded mailer... problem is
gnutls_record_check_pending() fails EVERY time.
That is, it never indicates any data has been received.
If I remove the check completely and just go to the receive logic after
sending an ESMTP command and call gnutls_record_recv()
all works fine. I successfully deliver complete emails.
Looking at gnutls_record_check_pending()'s use in cli.c I see it's really
inconclusive... the select might detect the incoming data...
static int check_net_or_keyboard_input(socket_st* hd)
{
int maxfd;
fd_set rset;
int err;
struct timeval tv;
do
{
FD_ZERO (&rset);
FD_SET (fileno (stdin), &rset);
FD_SET (hd->fd, &rset);
maxfd = MAX (fileno (stdin), hd->fd);
tv.tv_sec = 0;
tv.tv_usec = 500 * 1000;
if (hd->secure == 1)
if (gnutls_record_check_pending(hd->session))
return IN_NET;
err = select (maxfd + 1, &rset, NULL, NULL, &tv);
if (err < 0)
continue;
if (FD_ISSET (hd->fd, &rset))
return IN_NET;
if (FD_ISSET (fileno (stdin), &rset))
return IN_KEYBOARD;
}
while(err == 0);
return IN_NONE;
}
FYI, I'm linking in all of these -lgnutls -lgnutlsxx -lgnutls-extra
I'm going to need to implement a timeout so threads don't hang,
I suppose I could do it on the gnutls_record_recv() call, but will that
block on no data received?
Any thoughts?
Regards,
Frank
System info:
c01z0047:~/projects/MassMailer/MassMailer_Linux_Release_4_0_0/MassMailer>
gcc -v
Using built-in specs.
Target: s390x-suse-linux
Configured with: ../configure --enable-threads=posix --prefix=/usr
--with-local-prefix=/usr/local --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
--enable-languages=c,c++,objc,fortran,obj-c++,java
--enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.1.2
--enable-ssp --disable-libssp --disable-libgcj --with-slibdir=/lib64
--with-system-zlib --enable-shared --enable-__cxa_atexit
--enable-libstdcxx-allocator=new --program-suffix=
--enable-version-specific-runtime-libs --without-system-libunwind
--with-tune=z9-109 --with-arch=z900 --with-long-double-128
--host=s390x-suse-linux
Thread model: posix
gcc version 4.1.2 20070115 (SUSE Linux)
Frank Krout Senior Software Engineer
Office Euro RSCG 4D, 372 Danbury Rd, Wilton, Connecticut 06897
Tel 203.563.3314 Fax 203.563.3434 Web
eurorscg.com
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