8267256: Extend minimal retry for loopback connections on Windows to PlainSocketImpl
Backport-of: df332ff6e8bcee2cb5eeac1eefbc5c55a3fe8170
diff --git a/src/java.base/windows/native/libnet/PlainSocketImpl.c b/src/java.base/windows/native/libnet/PlainSocketImpl.c
index 65aa212..144d872 100644
--- a/src/java.base/windows/native/libnet/PlainSocketImpl.c
+++ b/src/java.base/windows/native/libnet/PlainSocketImpl.c
@@ -118,6 +118,9 @@
(JNIEnv *env, jclass clazz, jint fd, jobject iaObj, jint port) {
SOCKETADDRESS sa;
int rv, sa_len = 0;
+ int so_rv;
+ SOCKET s = (SOCKET)fd;
+ int type = 0, optlen = sizeof(type);
jboolean v4MappedAddress = ipv6_available() ? JNI_TRUE : JNI_FALSE;
if (NET_InetAddressToSockaddr(env, iaObj, port, &sa,
@@ -125,6 +128,16 @@
return -1;
}
+ so_rv = getsockopt(s, SOL_SOCKET, SO_TYPE, (char*)&type, &optlen);
+
+ /**
+ * Windows has a very long socket connect timeout of 2 seconds.
+ * If it's the loopback adapter we can shorten the wait interval.
+ */
+ if (so_rv == 0 && type == SOCK_STREAM && IS_LOOPBACK_ADDRESS(&sa)) {
+ NET_EnableFastTcpLoopbackConnect(fd);
+ }
+
rv = connect(fd, &sa.sa, sa_len);
if (rv == SOCKET_ERROR) {
int err = WSAGetLastError();
