/**
* @brief
* Connects to a resource monitor and returns a file descriptor to
* talk to it. If port is zero, use default port.
*
* @param[in] host - hostname
* @param[in] port - port number
*
* @return int
* @retval socket stream success
* @retval -1 error
*/
int
openrm(char *host, unsigned int port)
{
int stream;
static int first = 1;
DBPRT(("openrm: host %s port %u\n", host, port))
pbs_errno = 0;
if (port == 0)
port = pbs_conf.manager_service_port;
DBPRT(("using port %u\n", port))
#if RPP
if (first && pbs_conf.pbs_use_tcp == 0) {
int tryport = IPPORT_RESERVED;
first = 0;
while (--tryport > 0) {
if (rpp_bind(tryport) != -1)
break;
if ((errno != EADDRINUSE) && (errno != EADDRNOTAVAIL))
break;
}
}
stream = rpp_open(host, port);
#else
if ((stream = socket(AF_INET, SOCK_STREAM, 0)) != -1) {
int tryport = IPPORT_RESERVED;
struct sockaddr_in addr;
struct hostent *hp;
if ((!is_local_host(host))) {
if ((hp = gethostbyname(host)) == NULL) {
DBPRT(("host %s not found\n", host))
pbs_errno = ENOENT;
return -1;
}
}
memset(&addr, '\0', sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = htonl(INADDR_ANY);
while (--tryport > 0) {
addr.sin_port = htons((u_short)tryport);
if (bind(stream, (struct sockaddr *)&addr,
sizeof(addr)) != -1)
break;
if ((errno != EADDRINUSE) && (errno != EADDRNOTAVAIL))
break;
}
memset(&addr, '\0', sizeof(addr));
addr.sin_family = hp->h_addrtype;
addr.sin_port = htons((unsigned short)port);
memcpy(&addr.sin_addr, hp->h_addr, hp->h_length);
if (connect(stream, (struct sockaddr *)&addr,
sizeof(addr)) == -1) {
pbs_errno = errno;
#ifdef WIN32
closesocket(stream);
#else
close(stream);
#endif
return -1;
}
}
#endif
pbs_errno = errno;
if (stream < 0)
return -1;
if (addrm(stream) == -1) {
pbs_errno = errno;
close_dis(stream);
return -1;
}
return stream;
}
int openrm(
char *host, /* I */
unsigned int port) /* I (optional,0=DEFAULT) */
{
int stream;
int rc;
int retries = 0;
static unsigned int gotport = 0;
if (port == 0)
{
if (gotport == 0)
{
gotport = get_svrport((char *)PBS_MANAGER_SERVICE_NAME, (char *)"tcp",
PBS_MANAGER_SERVICE_PORT);
} /* END if (gotport == 0) */
port = gotport;
}
if ((stream = socket(AF_INET, SOCK_STREAM, 0)) != -1)
{
struct sockaddr_in addr;
struct addrinfo *addr_info;
if (pbs_getaddrinfo(host, NULL, &addr_info) != 0)
{
DBPRT(("host %s not found\n", host))
close(stream);
return(ENOENT * -1);
}
memset(&addr, '\0', sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = htonl(INADDR_ANY);
while (retries++ < MAX_RETRIES)
{
rc = bindresvport(stream, &addr);
if (rc != 0)
{
if (retries >= MAX_RETRIES)
{
close(stream);
return(-1*errno);
}
sleep(1);
}
else
break;
}
memset(&addr, '\0', sizeof(addr));
addr.sin_addr = ((struct sockaddr_in *)addr_info->ai_addr)->sin_addr;
addr.sin_family = AF_INET;
addr.sin_port = htons((unsigned short)port);
if (connect(stream, (struct sockaddr *)&addr, sizeof(addr)) == -1)
{
close(stream);
return(-1 * errno);
}
} /* END if ((stream = socket(AF_INET,SOCK_STREAM,0)) != -1) */
if (stream < 0)
{
return(-1 * errno);
}
if (addrm(stream) == -1)
{
close(stream);
return(-1 * errno);
}
return(stream);
} /* END openrm() */