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Warn if port is already used

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SVN revision: 1018
This commit is contained in:
Stefan Ritt 2004-08-04 12:38:22 +00:00
parent be744c15b1
commit 36b3a04f76
1 changed files with 27 additions and 8 deletions
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35
src/elogd.c
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@ -6,6 +6,9 @@
Contents: Web server program for Electronic Logbook ELOG Contents: Web server program for Electronic Logbook ELOG
$Log$ $Log$
Revision 1.432 2004/08/04 12:38:22 midas
Warn if port is already used
Revision 1.431 2004/08/04 11:59:12 midas Revision 1.431 2004/08/04 11:59:12 midas
Added -s(ilent) option Added -s(ilent) option
@ -19434,17 +19437,26 @@ void server_loop(int tcp_port)
} }
serv_addr.sin_port = htons((short) tcp_port); serv_addr.sin_port = htons((short) tcp_port);
/* try reusing address */
/* first try without reusing address */
flag = 0;
setsockopt(lsock, SOL_SOCKET, SO_REUSEADDR, (char *) &flag, sizeof(INT));
status = bind(lsock, (struct sockaddr *) &serv_addr, sizeof(serv_addr));
if (status < 0)
eprintf("Warning: another server might already run on port %d.\n\n",tcp_port);
/* now try with reusing address */
flag = 1; flag = 1;
setsockopt(lsock, SOL_SOCKET, SO_REUSEADDR, (char *) &flag, sizeof(INT)); setsockopt(lsock, SOL_SOCKET, SO_REUSEADDR, (char *) &flag, sizeof(INT));
status = bind(lsock, (struct sockaddr *) &serv_addr, sizeof(serv_addr)); status = bind(lsock, (struct sockaddr *) &serv_addr, sizeof(serv_addr));
if (status < 0) { if (status < 0) {
eprintf eprintf
("Cannot bind to port %d.\nPlease try later or use the \"-p\" flag to specify a different port.\n", ("Cannot bind to port %d.\nPlease use the \"-p\" flag to specify a different port.\n",
tcp_port); tcp_port);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
/* get host name for mail notification */ /* get host name for mail notification */
gethostname(host_name, sizeof(host_name)); gethostname(host_name, sizeof(host_name));
phe = gethostbyname(host_name); phe = gethostbyname(host_name);
@ -20678,7 +20690,7 @@ int install_service(void)
/* Try to start the elogd service */ /* Try to start the elogd service */
if (!StartService(hservice, 0, NULL)) if (!StartService(hservice, 0, NULL))
eprintf("The elogd service could not be started."); eprintf("The elogd service could not be started.\n");
else else
eprintf("The elogd service has been started successfully.\n"); eprintf("The elogd service has been started successfully.\n");
@ -20728,15 +20740,16 @@ int remove_service(int silent)
} }
/* Now remove the service from the SCM */ /* Now remove the service from the SCM */
if (!silent) { if (!DeleteService(hservice)) {
if (!DeleteService(hservice)) { if (!silent) {
if (GetLastError() == ERROR_SERVICE_MARKED_FOR_DELETE) if (GetLastError() == ERROR_SERVICE_MARKED_FOR_DELETE)
eprintf("The elogd service is already marked to be unregistered.\n"); eprintf("The elogd service is already marked to be unregistered.\n");
else else
eprintf("The elogd service could not be unregistered.\n"); eprintf("The elogd service could not be unregistered.\n");
} else }
} else
if (!silent)
eprintf("The elogd service hass been unregistered successfully.\n"); eprintf("The elogd service hass been unregistered successfully.\n");
}
CloseServiceHandle(hservice); CloseServiceHandle(hservice);
CloseServiceHandle(hsrvmanager); CloseServiceHandle(hsrvmanager);
@ -20800,6 +20813,12 @@ void WINAPI ServiceMain(DWORD argc, LPSTR * argv)
serviceStatus.dwCurrentState = SERVICE_RUNNING; serviceStatus.dwCurrentState = SERVICE_RUNNING;
SetServiceStatus(serviceStatusHandle, &serviceStatus); SetServiceStatus(serviceStatusHandle, &serviceStatus);
/* avoid recursive calls to run_service */
running_as_daemon = 0;
/* Redirect all messages handled with eprintf/efputs to syslog */
redirect_to_syslog();
/* start main server, exit with "_abort = TRUE" */ /* start main server, exit with "_abort = TRUE" */
server_loop(tcp_port); server_loop(tcp_port);
@ -20887,7 +20906,7 @@ int main(int argc, char *argv[])
running_as_daemon = TRUE; running_as_daemon = TRUE;
else if (argv[i][0] == '-' && argv[i][1] == 'v') else if (argv[i][0] == '-' && argv[i][1] == 'v')
verbose = TRUE; verbose = TRUE;
else if (argv[i][0] == '-' && argv[i][1] == 's') else if (argv[i][0] == '-' && argv[i][1] == 'S')
silent = TRUE; silent = TRUE;
else if (argv[i][0] == '-' && argv[i][1] == 'k') else if (argv[i][0] == '-' && argv[i][1] == 'k')
use_keepalive = FALSE; use_keepalive = FALSE;