#1676608 SCTP support added (experimental)

SRC/configure.ac

@@ -274,6 +274,33 @@ AC_ARG_ENABLE(priority,
    PRIORITY=1
  fi)
 
+dnl SCTP, RFC 4960, feature request #1676608
+AC_MSG_CHECKING([SCTP])
+AC_TRY_COMPILE(
+ [#include <sys/types.h>
+  #include <netinet/in.h>
+ ],
+ [int foobar = IPPROTO_SCTP;],
+ [AC_DEFINE(HAVE_SCTP,,[SCTP support])
+  ac_have_sctp="yes"],
+ ac_have_sctp="no")
+AC_MSG_RESULT($ac_have_sctp)
+AC_ARG_ENABLE(sctp,
+ [  --enable-sctp   SCTP (Stream Control Transmission Protocol) support],
+ [if test "$enableval" = "yes"; then
+   if test $ac_have_sctp = "yes"; then
+     AC_DEFINE(HAVE_SCTP,,[Stream Control Transmission Protocol support])
+     SCTP=1
+   else
+     AC_MSG_WARN([No SCTP support on this system, request ignored])
+   fi
+  fi],
+ dnl Default: enable it if supported
+ if test $ac_have_sctp = "yes"; then
+   AC_DEFINE(HAVE_SCTP,,[Stream Control Transmission Protocol support])
+   SCTP=1
+ fi)
+
 if test "$GCC" = yes; then
         CFLAGS="$CFLAGS -Wall"
 fi
@@ -332,6 +359,7 @@ DISPLAY_SETTING(GNUTLS)
 DISPLAY_SETTING(SMTP)
 DISPLAY_SETTING(LIBIDN)
 DISPLAY_SETTING(TOS)
+DISPLAY_SETTING(SCTP)
 DISPLAY_SETTING(PRIORITY)
 
 compil_date=`date +%Y-%m-%d`

SRC/echoping.1.in

@@ -14,6 +14,7 @@ echoping \- tests a remote host with TCP or UDP
 .RI [-c] 
 .RI [-d] 
 .RI [-u] 
+.RI [-T]
 .RI [-s size] 
 .RI [-n number] 
 .RI [-w delay] 
@@ -80,6 +81,8 @@ Number of seconds to wait a reply before giving up. For TCP, this is the
 maximum number of seconds for the whole connection (setup and data exchange).
 .IP -u
 Use UDP instead of TCP
+.IP -T
+Use SCTP instead of TCP
 .IP -d
 Use the "discard" service instead of echo
 .IP -c

SRC/echoping.c

@@ -146,6 +146,11 @@ main(argc, argv)
 	int             priority_requested = 0;
 	int             tos;
 	int             tos_requested = 0;
+	int             protocol;
+	boolean         sctp_requested = FALSE;
+#ifdef HAVE_SCTP
+	int             sctp = 0;
+#endif
 #ifdef HAVE_TCP_INFO
 	struct tcp_info tcpinfo;
 	socklen_t       socket_length = sizeof(tcpinfo);
@@ -184,6 +189,7 @@ main(argc, argv)
 		{"ssl", 'C', POPT_ARG_NONE, &ssl, 'C'},
 		{"priority", 'p', POPT_ARG_INT, &priority, 'p'},
 		{"type-of-service", 'P', POPT_ARG_INT, &tos, 'P'},
+		{"sctp", 'T', POPT_ARG_NONE, &sctp, 'T'},
 		{"check-original", 'a', POPT_ARG_NONE, NULL, 'a',
 		 "For HTTP through a proxy/cache"},
 		{"ignore-cache", 'A', POPT_ARG_NONE, NULL, 'A',
@@ -312,6 +318,9 @@ main(argc, argv)
 			remaining--;
 			tos_requested = 1;
 			break;
+		case 'T':
+			sctp_requested = TRUE;
+			break;
 		case 's':
 			remaining--;
 			if (size > MAX_LINE) {
@@ -467,6 +476,13 @@ main(argc, argv)
 			       progname);
 		exit(1);
 	}
+#endif
+#ifndef HAVE_SCTP
+	if (sctp_requested) {
+		(void) fprintf(stderr,
+			       "%s: Not compiled with SCTP support.\n", progname);
+		exit(1);
+	}
 #endif
 	remaining--;		/* No argv[0] this time */
 	leftover = (char **) &argv[argc - remaining];
@@ -699,7 +715,7 @@ main(argc, argv)
 	if (smtp) {
 		sendline = "QUIT\r\n";	/* Surprises some SMTP servers which log a
 					 * frightening NOQUEUE. Anyone knows better? 
-					 * * * * See bug #1512776 */
+					 * * * * * See bug #1512776 */
 	} else
 #endif
 #ifdef ICP
@@ -813,10 +829,14 @@ main(argc, argv)
 		/* 
 		 * Open a socket.
 		 */
+		protocol = res->ai_protocol;
+#ifdef HAVE_SCTP
+		if (sctp)
+			protocol = IPPROTO_SCTP;
+#endif
 		if (!plugin) {
 			if ((sockfd =
-			     socket(res->ai_family, res->ai_socktype,
-				    res->ai_protocol)) < 0)
+			     socket(res->ai_family, res->ai_socktype, protocol)) < 0)
 				err_sys("Can't open socket");
 			if (udp) {
 				struct addrinfo hints2, *res2;