1 /*
2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
786
787 switch (errno) {
788 case ENETUNREACH: /* Network Unreachable */
789 case EAFNOSUPPORT: /* Address Family not supported */
790 case EADDRNOTAVAIL: /* address is not available on the remote machine */
791 #ifdef __linux__
792 case EINVAL:
793 case EHOSTUNREACH:
794 /*
795 * On some Linux versions, when a socket is bound to the loopback
796 * interface, connect will fail and errno will be set to EINVAL
797 * or EHOSTUNREACH. When that happens, don't throw an exception,
798 * just return false.
799 */
800 #endif /* __linux__ */
801 close(fd);
802 return JNI_FALSE;
803 }
804
805 if (errno != EINPROGRESS) {
806 NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "ConnectException",
807 "connect failed");
808 close(fd);
809 return JNI_FALSE;
810 }
811
812 timeout = NET_Wait(env, fd, NET_WAIT_CONNECT, timeout);
813 if (timeout >= 0) {
814 /* has connection been established? */
815 if (getsockopt(fd, SOL_SOCKET, SO_ERROR, (void*)&connect_rv,
816 &optlen) <0) {
817 connect_rv = errno;
818 }
819 if (connect_rv == 0 || connect_rv == ECONNREFUSED) {
820 close(fd);
821 return JNI_TRUE;
822 }
823 }
824 close(fd);
825 return JNI_FALSE;
826 }
|
1 /*
2 * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
786
787 switch (errno) {
788 case ENETUNREACH: /* Network Unreachable */
789 case EAFNOSUPPORT: /* Address Family not supported */
790 case EADDRNOTAVAIL: /* address is not available on the remote machine */
791 #ifdef __linux__
792 case EINVAL:
793 case EHOSTUNREACH:
794 /*
795 * On some Linux versions, when a socket is bound to the loopback
796 * interface, connect will fail and errno will be set to EINVAL
797 * or EHOSTUNREACH. When that happens, don't throw an exception,
798 * just return false.
799 */
800 #endif /* __linux__ */
801 close(fd);
802 return JNI_FALSE;
803 }
804
805 if (errno != EINPROGRESS) {
806 JNU_ThrowByNameWithLastError(env, JNU_JAVANETPKG "ConnectException",
807 "connect failed");
808 close(fd);
809 return JNI_FALSE;
810 }
811
812 timeout = NET_Wait(env, fd, NET_WAIT_CONNECT, timeout);
813 if (timeout >= 0) {
814 /* has connection been established? */
815 if (getsockopt(fd, SOL_SOCKET, SO_ERROR, (void*)&connect_rv,
816 &optlen) <0) {
817 connect_rv = errno;
818 }
819 if (connect_rv == 0 || connect_rv == ECONNREFUSED) {
820 close(fd);
821 return JNI_TRUE;
822 }
823 }
824 close(fd);
825 return JNI_FALSE;
826 }
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