// Cribbed from directConnectToSockAddr(). Could probably just call it
// between SetSyscalls(), but I don't know that SO_KEEPALIVE doesn't matter.
int open_tcp_stream( const condor_sockaddr & sa ) {
int scm = SetSyscalls( SYS_LOCAL | SYS_UNMAPPED );
int fd = socket( sa.get_aftype(), SOCK_STREAM, 0 );
assert( fd != -1 );
int rv = _condor_local_bind( TRUE, fd );
if( rv != TRUE ) {
close( fd );
SetSyscalls( scm );
return -1;
}
// condor_connect ends up pulling in param() via ip6_get_scope_id(),
// which we can't allow, since this function is linked into standard
// universe jobs.
// rv = condor_connect( fd, sa );
rv = connect( fd, sa.to_sockaddr(), sa.get_socklen() );
if( rv != 0 ) {
dprintf( D_ALWAYS, "condor_connect() failed - errno = %d (rv %d)\n", errno, rv );
close( fd );
SetSyscalls( scm );
return -1;
}
SetSyscalls( scm );
return fd;
}
/*
Open a TCP connection at the given hostname and port number. This
will result in a file descriptor where we can read or write the
file. N.B. both the IP address and the port number are given in host
byte order.
*/
int
open_tcp_stream( unsigned int ip_addr, unsigned short port )
{
struct sockaddr_in sa_in;
int fd;
int status;
int scm;
scm = SetSyscalls( SYS_LOCAL | SYS_UNMAPPED );
/* generate a socket */
fd = socket( AF_INET, SOCK_STREAM, 0 );
assert( fd >= 0 );
dprintf( D_FULLDEBUG, "Generated a data socket - fd = %d\n", fd );
/* Now we need to bind to the right interface. */
if( ! _condor_local_bind(TRUE, fd) ) {
/* error in bind() */
close(fd);
SetSyscalls( scm );
return -1;
}
/* Now, set the remote address. */
ip_addr = htonl( ip_addr );
memset( &sa_in, '\0', sizeof sa_in );
memcpy( &sa_in.sin_addr, &ip_addr, sizeof(ip_addr) );
sa_in.sin_family = AF_INET;
sa_in.sin_port = htons( port );
dprintf( D_FULLDEBUG, "Internet address structure set up\n" );
status = connect( fd, (struct sockaddr *)&sa_in, sizeof(sa_in) );
if( status < 0 ) {
dprintf( D_ALWAYS, "connect() failed - errno = %d\n", errno );
close(fd);
SetSyscalls( scm );
return -1;
}
dprintf( D_FULLDEBUG, "Connection completed - returning fd %d\n", fd );
SetSyscalls( scm );
return fd;
}
