Update NSPR to 4.16

31 files changed, 811 insertions, 247 deletions

diff --git a/nsprpub/TAG-INFO b/nsprpub/TAG-INFO
index 34b02cffca..ebe7269ae6 100644
--- a/nsprpub/TAG-INFO
+++ b/nsprpub/TAG-INFO
@@ -1 +1 @@
-NSPR_4_13_1_RTM
+NSPR_4_16_RTM
diff --git a/nsprpub/configure b/nsprpub/configure
index fb3b3e2ab8..b8ad2b4ebf 100755
--- a/nsprpub/configure
+++ b/nsprpub/configure
@@ -2488,8 +2488,8 @@ test -n "$target_alias" &&
   program_prefix=${target_alias}-
 
 MOD_MAJOR_VERSION=4
-MOD_MINOR_VERSION=13
-MOD_PATCH_VERSION=1
+MOD_MINOR_VERSION=16
+MOD_PATCH_VERSION=0
 NSPR_MODNAME=nspr20
 _HAVE_PTHREADS=
 USE_PTHREADS=
@@ -5424,6 +5424,40 @@ $as_echo "no" >&6; }
 fi
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pragma diagnostic" >&5
+$as_echo_n "checking for pragma diagnostic... " >&6; }
+if test "$GNU_CC" = "1"; then
+    cat >dummy-hello.c <<EOF
+#ifdef _PR_HAS_PRAGMA_DIAGNOSTIC
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#endif
+int main() {
+    char *dummy = "";
+    return 0;
+}
+EOF
+    ${CC} -Werror=unused-but-set-variable -S dummy-hello.c -o dummy-hello.s 2>&5
+    if test $? != 0; then
+        ${CC} -Werror=unused-but-set-variable -D_PR_HAS_PRAGMA_DIAGNOSTIC -S dummy-hello.c -o dummy-hello.s 2>&5
+        if test $? = 0; then
+            CFLAGS="$CFLAGS -D_PR_HAS_PRAGMA_DIAGNOSTIC=1"
+            _res=yes
+        else
+            _res=no
+        fi
+    else
+        _res=no
+    fi
+    rm -f dummy-hello.c dummy-hello.s
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $_res" >&5
+$as_echo "$_res" >&6; }
+else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
 _SAVE_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS -fprofile-generate -fprofile-correction"
 
@@ -6524,6 +6558,13 @@ fi
 
     $as_echo "#define HAVE_SOCKLEN_T 1" >>confdefs.h
 
+    $as_echo "#define HAVE_POINTER_LOCALTIME_R 1" >>confdefs.h
+
+    HOST_DARWIN_MAJOR=`echo "$build_os" | sed -E -e 's/^darwin([0-9]+).*$/\1/'`
+    if test "$HOST_DARWIN_MAJOR" -ge 15 ; then
+        $as_echo "#define HAS_CONNECTX 1" >>confdefs.h
+    fi
+
     AS='$(CC) -x assembler-with-cpp'
     CFLAGS="$CFLAGS -Wall -fno-common"
     case "${target_cpu}" in
@@ -6673,6 +6714,8 @@ tools are selected during the Xcode/Developer Tools installation." "$LINENO" 5
 
     $as_echo "#define HAVE_SOCKLEN_T 1" >>confdefs.h
 
+    $as_echo "#define HAVE_POINTER_LOCALTIME_R 1" >>confdefs.h
+
     CFLAGS="$CFLAGS $(DSO_CFLAGS) -ansi -Wall"
     MOZ_OBJFORMAT=`test -x /usr/bin/objformat && /usr/bin/objformat || echo elf`
     if test "$MOZ_OBJFORMAT" = "elf"; then
@@ -6975,6 +7018,8 @@ tools are selected during the Xcode/Developer Tools installation." "$LINENO" 5
 
     $as_echo "#define HAVE_FCNTL_FILE_LOCKING 1" >>confdefs.h
 
+    $as_echo "#define HAVE_POINTER_LOCALTIME_R 1" >>confdefs.h
+
     case "${target}" in
     *-android*|*-linuxandroid*)
         OS_TARGET=Android
@@ -7281,6 +7326,8 @@ $as_echo "$as_me: WARNING: Unknown version of the Microsoft (R) Manifest Tool."
 
     $as_echo "#define HAVE_SOCKLEN_T 1" >>confdefs.h
 
+    $as_echo "#define HAVE_POINTER_LOCALTIME_R 1" >>confdefs.h
+
     if test -z "$USE_NSPR_THREADS"; then
         USE_PTHREADS=1
     fi
@@ -7337,6 +7384,8 @@ $as_echo "$as_me: WARNING: Unknown version of the Microsoft (R) Manifest Tool."
 
     $as_echo "#define HAVE_SOCKLEN_T 1" >>confdefs.h
 
+    $as_echo "#define HAVE_POINTER_LOCALTIME_R 1" >>confdefs.h
+
     CFLAGS="$CFLAGS -ansi -Wall"
     CXXFLAGS="$CXXFLAGS -ansi -Wall"
     DLL_SUFFIX=so.1.0
diff --git a/nsprpub/configure.in b/nsprpub/configure.in
index 202158b799..22b4e72245 100644
--- a/nsprpub/configure.in
+++ b/nsprpub/configure.in
@@ -15,8 +15,8 @@ dnl ========================================================
 dnl = Defaults
 dnl ========================================================
 MOD_MAJOR_VERSION=4
-MOD_MINOR_VERSION=13
-MOD_PATCH_VERSION=1
+MOD_MINOR_VERSION=16
+MOD_PATCH_VERSION=0
 NSPR_MODNAME=nspr20
 _HAVE_PTHREADS=
 USE_PTHREADS=
@@ -716,6 +716,40 @@ else
 fi
 
 dnl ========================================================
+dnl Check for pragma diagnostic
+dnl ========================================================
+
+AC_MSG_CHECKING([for pragma diagnostic])
+if test "$GNU_CC" = "1"; then
+    cat >dummy-hello.c <<EOF
+#ifdef _PR_HAS_PRAGMA_DIAGNOSTIC
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#endif
+int main() {
+    char *dummy = "";
+    return 0;
+}
+EOF
+    ${CC} -Werror=unused-but-set-variable -S dummy-hello.c -o dummy-hello.s 2>&5
+    if test $? != 0; then
+        ${CC} -Werror=unused-but-set-variable -D_PR_HAS_PRAGMA_DIAGNOSTIC -S dummy-hello.c -o dummy-hello.s 2>&5
+        if test $? = 0; then
+            CFLAGS="$CFLAGS -D_PR_HAS_PRAGMA_DIAGNOSTIC=1"
+            _res=yes
+        else
+            _res=no
+        fi
+    else
+        _res=no
+    fi
+    rm -f dummy-hello.c dummy-hello.s
+    AC_MSG_RESULT([$_res])
+else
+    AC_MSG_RESULT([no])
+fi
+
+dnl ========================================================
 dnl Profile guided optimization
 dnl ========================================================
 dnl Test for profiling options
@@ -1349,6 +1383,13 @@ case "$target" in
     AC_DEFINE(DARWIN)
     AC_DEFINE(HAVE_BSD_FLOCK)
     AC_DEFINE(HAVE_SOCKLEN_T)
+    AC_DEFINE(HAVE_POINTER_LOCALTIME_R)
+    changequote(,)
+    HOST_DARWIN_MAJOR=`echo "$build_os" | sed -E -e 's/^darwin([0-9]+).*$/\1/'`
+    changequote([,])
+    if test "$HOST_DARWIN_MAJOR" -ge 15 ; then
+        AC_DEFINE(HAS_CONNECTX)
+    fi
     AS='$(CC) -x assembler-with-cpp'
     CFLAGS="$CFLAGS -Wall -fno-common"
     case "${target_cpu}" in
@@ -1519,6 +1560,7 @@ tools are selected during the Xcode/Developer Tools installation.])
     AC_DEFINE(FREEBSD)
     AC_DEFINE(HAVE_BSD_FLOCK)
     AC_DEFINE(HAVE_SOCKLEN_T)
+    AC_DEFINE(HAVE_POINTER_LOCALTIME_R)
     CFLAGS="$CFLAGS $(DSO_CFLAGS) -ansi -Wall"
     MOZ_OBJFORMAT=`test -x /usr/bin/objformat && /usr/bin/objformat || echo elf`
     if test "$MOZ_OBJFORMAT" = "elf"; then
@@ -1789,6 +1831,7 @@ tools are selected during the Xcode/Developer Tools installation.])
     AC_DEFINE(XP_UNIX)
     AC_DEFINE(_GNU_SOURCE)
     AC_DEFINE(HAVE_FCNTL_FILE_LOCKING)
+    AC_DEFINE(HAVE_POINTER_LOCALTIME_R)
     case "${target}" in
     *-android*|*-linuxandroid*)
         OS_TARGET=Android
@@ -2078,6 +2121,7 @@ tools are selected during the Xcode/Developer Tools installation.])
     AC_DEFINE(NETBSD)
     AC_DEFINE(HAVE_BSD_FLOCK)
     AC_DEFINE(HAVE_SOCKLEN_T)
+    AC_DEFINE(HAVE_POINTER_LOCALTIME_R)
     if test -z "$USE_NSPR_THREADS"; then
         USE_PTHREADS=1
     fi
@@ -2126,6 +2170,7 @@ tools are selected during the Xcode/Developer Tools installation.])
     AC_DEFINE(OPENBSD)
     AC_DEFINE(HAVE_BSD_FLOCK)
     AC_DEFINE(HAVE_SOCKLEN_T)
+    AC_DEFINE(HAVE_POINTER_LOCALTIME_R)
     CFLAGS="$CFLAGS -ansi -Wall"
     CXXFLAGS="$CXXFLAGS -ansi -Wall"
     DLL_SUFFIX=so.1.0
diff --git a/nsprpub/lib/ds/plvrsion.c b/nsprpub/lib/ds/plvrsion.c
index e251a5ac03..8b351b4db6 100644
--- a/nsprpub/lib/ds/plvrsion.c
+++ b/nsprpub/lib/ds/plvrsion.c
@@ -74,6 +74,10 @@ static char sccsid[] = "@(#)NSPR " PR_VERSION _DEBUG_STRING
 
 #endif /* XP_UNIX */
 
+#ifdef _PR_HAS_PRAGMA_DIAGNOSTIC
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#endif
 PR_IMPLEMENT(const PRVersionDescription*) libVersionPoint()
 {
 #ifdef XP_UNIX
@@ -88,6 +92,9 @@ PR_IMPLEMENT(const PRVersionDescription*) libVersionPoint()
 #endif
     return &VERSION_DESC_NAME;
 }  /* versionEntryPointType */
+#ifdef _PR_HAS_PRAGMA_DIAGNOSTIC
+#pragma GCC diagnostic pop
+#endif
 
 /* plvrsion.c */
 
diff --git a/nsprpub/lib/libc/src/plvrsion.c b/nsprpub/lib/libc/src/plvrsion.c
index b25be1e031..c4bc7a8317 100644
--- a/nsprpub/lib/libc/src/plvrsion.c
+++ b/nsprpub/lib/libc/src/plvrsion.c
@@ -74,6 +74,10 @@ static char sccsid[] = "@(#)NSPR " PR_VERSION _DEBUG_STRING
 
 #endif /* XP_UNIX */
 
+#ifdef _PR_HAS_PRAGMA_DIAGNOSTIC
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#endif
 PR_IMPLEMENT(const PRVersionDescription*) libVersionPoint()
 {
 #ifdef XP_UNIX
@@ -88,6 +92,9 @@ PR_IMPLEMENT(const PRVersionDescription*) libVersionPoint()
 #endif
     return &VERSION_DESC_NAME;
 }  /* versionEntryPointType */
+#ifdef _PR_HAS_PRAGMA_DIAGNOSTIC
+#pragma GCC diagnostic pop
+#endif
 
 /* plvrsion.c */
 
diff --git a/nsprpub/lib/prstreams/plvrsion.c b/nsprpub/lib/prstreams/plvrsion.c
index 511e4c4f65..27fd058d70 100644
--- a/nsprpub/lib/prstreams/plvrsion.c
+++ b/nsprpub/lib/prstreams/plvrsion.c
@@ -74,6 +74,10 @@ static char sccsid[] = "@(#)NSPR " PR_VERSION _DEBUG_STRING
 
 #endif /* XP_UNIX */
 
+#ifdef _PR_HAS_PRAGMA_DIAGNOSTIC
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#endif
 PR_IMPLEMENT(const PRVersionDescription*) libVersionPoint()
 {
 #ifdef XP_UNIX
@@ -88,6 +92,9 @@ PR_IMPLEMENT(const PRVersionDescription*) libVersionPoint()
 #endif
     return &VERSION_DESC_NAME;
 }  /* versionEntryPointType */
+#ifdef _PR_HAS_PRAGMA_DIAGNOSTIC
+#pragma GCC diagnostic pop
+#endif
 
 /* plvrsion.c */
 
diff --git a/nsprpub/pr/include/md/_linux.cfg b/nsprpub/pr/include/md/_linux.cfg
index 8cbf0cb9b2..b4c0ed427b 100644
--- a/nsprpub/pr/include/md/_linux.cfg
+++ b/nsprpub/pr/include/md/_linux.cfg
@@ -498,6 +498,9 @@
 
 #elif defined(__mips__)
 
+/* For _ABI64 */
+#include <sgidefs.h>
+
 #ifdef __MIPSEB__
 #define IS_BIG_ENDIAN 1
 #undef  IS_LITTLE_ENDIAN
diff --git a/nsprpub/pr/include/md/_win95.h b/nsprpub/pr/include/md/_win95.h
index d65e264376..04f811d37d 100644
--- a/nsprpub/pr/include/md/_win95.h
+++ b/nsprpub/pr/include/md/_win95.h
@@ -290,6 +290,9 @@ extern void _MD_MakeNonblock(PRFileDesc *f);
 extern PRInt32 _MD_CloseSocket(PROsfd osfd);
 #define _MD_CLOSE_SOCKET              _MD_CloseSocket
 #define _MD_SENDTO                    _PR_MD_SENDTO
+#ifdef _WIN64
+#define _MD_TCPSENDTO                 _PR_MD_TCPSENDTO
+#endif
 #define _MD_RECVFROM                  _PR_MD_RECVFROM
 #define _MD_SOCKETPAIR(s, type, proto, sv) -1
 #define _MD_GETSOCKNAME               _PR_MD_GETSOCKNAME
diff --git a/nsprpub/pr/include/prinit.h b/nsprpub/pr/include/prinit.h
index e27fc34d05..fd935ec309 100644
--- a/nsprpub/pr/include/prinit.h
+++ b/nsprpub/pr/include/prinit.h
@@ -31,10 +31,10 @@ PR_BEGIN_EXTERN_C
 ** The format of the version string is
 **     "<major version>.<minor version>[.<patch level>] [<Beta>]"
 */
-#define PR_VERSION  "4.13.1"
+#define PR_VERSION  "4.16"
 #define PR_VMAJOR   4
-#define PR_VMINOR   13
-#define PR_VPATCH   1
+#define PR_VMINOR   16
+#define PR_VPATCH   0
 #define PR_BETA     PR_FALSE
 
 /*
diff --git a/nsprpub/pr/include/private/primpl.h b/nsprpub/pr/include/private/primpl.h
index 63ba3ee46f..dc24a25727 100644
--- a/nsprpub/pr/include/private/primpl.h
+++ b/nsprpub/pr/include/private/primpl.h
@@ -1225,6 +1225,13 @@ extern PRInt32 _PR_MD_SENDTO(
     const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout);
 #define    _PR_MD_SENDTO _MD_SENDTO
 
+#if defined(_WIN64) && defined(WIN95)
+extern PRInt32 _PR_MD_TCPSENDTO(
+    PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags,
+    const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout);
+#define    _PR_MD_TCPSENDTO _MD_TCPSENDTO
+#endif
+
 extern PRInt32 _PR_MD_SOCKETPAIR(int af, int type, int flags, PROsfd *osfd);
 #define    _PR_MD_SOCKETPAIR _MD_SOCKETPAIR
 
@@ -1747,6 +1754,18 @@ struct PRFilePrivate {
                          * requires knowing the address family of the 
 			 * socket, we save the address family here. */
 #endif
+
+#if defined(_WIN64)
+    /* This is necessary for TCP Fast Open. TCP Fast Open in windows must
+     * use ConnectEx function which uses OVERLAPPED. TCPSendTo will call
+     * ConnectEx to send fast open data. If ConnectEx returns
+     * ERROR_IO_PENDING we need to save OVERLAPPED structure and we will
+     * use it in ConnectContinue to get the final result of ConnectEx.
+     */
+    PRBool alreadyConnected;
+    PRBool overlappedActive;
+    OVERLAPPED ol;
+#endif
 };
 
 #ifdef _WIN64
diff --git a/nsprpub/pr/include/prtypes.h b/nsprpub/pr/include/prtypes.h
index 52b3ab0b19..94bca3cfcd 100644
--- a/nsprpub/pr/include/prtypes.h
+++ b/nsprpub/pr/include/prtypes.h
@@ -231,7 +231,7 @@ PR_BEGIN_EXTERN_C
 ** to use <stdint.h>. A patch to do that is in NSPR bug 634793.
 */
 
-#if defined(__APPLE__) || defined(__ANDROID__) || defined(__OpenBSD__)
+#if defined(__APPLE__) || defined(__OpenBSD__)
 #define PR_ALTERNATE_INT64_TYPEDEF
 #endif
 
@@ -245,16 +245,24 @@ PR_BEGIN_EXTERN_C
 #if PR_BYTES_PER_BYTE == 1
 typedef unsigned char PRUint8;
 /*
+** There are two scenarios that require us to define PRInt8 as type 'char'.
+** (1)
 ** Some cfront-based C++ compilers do not like 'signed char' and
 ** issue the warning message:
 **     warning: "signed" not implemented (ignored)
 ** For these compilers, we have to define PRInt8 as plain 'char'.
 ** Make sure that plain 'char' is indeed signed under these compilers.
+** (2)
+** Mozilla C++ code expects the PRInt{N} and int{N}_t types to match (see bug
+** 634793). If a platform defines int8_t as 'char', but NSPR defines it as
+** 'signed char', it results in a type mismatch.
+** On such platforms we define PRInt8 as 'char' to avoid the mismatch. 
 */
-#if (defined(HPUX) && defined(__cplusplus) \
+#if (defined(HPUX) && defined(__cplusplus) /* reason 1*/ \
         && !defined(__GNUC__) && __cplusplus < 199707L) \
-    || (defined(SCO) && defined(__cplusplus) \
-        && !defined(__GNUC__) && __cplusplus == 1L)
+    || (defined(SCO) && defined(__cplusplus) /* reason 1 */ \
+        && !defined(__GNUC__) && __cplusplus == 1L) \
+    || (defined(__sun) && defined(__cplusplus)) /* reason 2 */
 typedef char PRInt8;
 #else
 typedef signed char PRInt8;
diff --git a/nsprpub/pr/src/io/prio.c b/nsprpub/pr/src/io/prio.c
index 78cbdf564b..bf9763a2cd 100644
--- a/nsprpub/pr/src/io/prio.c
+++ b/nsprpub/pr/src/io/prio.c
@@ -119,6 +119,10 @@ PR_IMPLEMENT(PRFileDesc*) PR_AllocFileDesc(
         fd->methods = methods;
         fd->secret->state = _PR_FILEDESC_OPEN;
 	fd->secret->md.osfd = osfd;
+#if defined(_WIN64)
+        fd->secret->alreadyConnected = PR_FALSE;
+        fd->secret->overlappedActive = PR_FALSE;
+#endif
         _PR_MD_INIT_FILEDESC(fd);
     } else {
 	    PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
diff --git a/nsprpub/pr/src/io/prlayer.c b/nsprpub/pr/src/io/prlayer.c
index cadb7ca3ca..00da0287a1 100644
--- a/nsprpub/pr/src/io/prlayer.c
+++ b/nsprpub/pr/src/io/prlayer.c
@@ -47,7 +47,8 @@ static PRStatus PR_CALLBACK pl_TopClose (PRFileDesc *fd)
 		rv = fd->lower->methods->close(fd->lower);
 		_PR_DestroyIOLayer(fd);
 		return rv;
-	} else if ((fd->higher) && (PR_IO_LAYER_HEAD == fd->higher->identity)) {
+	}
+	if ((fd->higher) && (PR_IO_LAYER_HEAD == fd->higher->identity)) {
 		/*
 		 * lower layers of new style stack
 		 */
@@ -201,16 +202,16 @@ static PRFileDesc* PR_CALLBACK pl_TopAccept (
         return NULL;
     }
 
-    if (newstyle_stack) {
-		newstack->lower = newfd;
-		newfd->higher = newstack;
-		return newstack;
-	} else {
-		/* this PR_PushIOLayer call cannot fail */
-		rv = PR_PushIOLayer(newfd, PR_TOP_IO_LAYER, newstack);
-		PR_ASSERT(PR_SUCCESS == rv);
-    	return newfd;  /* that's it */
-	}
+    if (newstyle_stack)
+    {
+        newstack->lower = newfd;
+        newfd->higher = newstack;
+        return newstack;
+    }
+    /* this PR_PushIOLayer call cannot fail */
+    rv = PR_PushIOLayer(newfd, PR_TOP_IO_LAYER, newstack);
+    PR_ASSERT(PR_SUCCESS == rv);
+    return newfd;  /* that's it */
 }
 
 static PRStatus PR_CALLBACK pl_DefBind (PRFileDesc *fd, const PRNetAddr *addr)
@@ -326,12 +327,11 @@ static PRInt32 PR_CALLBACK pl_DefAcceptread (
 		(*nd)->higher = newstack;
 		*nd = newstack;
 		return nbytes;
-	} else {
-		/* this PR_PushIOLayer call cannot fail */
-		rv = PR_PushIOLayer(*nd, PR_TOP_IO_LAYER, newstack);
-		PR_ASSERT(PR_SUCCESS == rv);
-		return nbytes;
 	}
+    /* this PR_PushIOLayer call cannot fail */
+    rv = PR_PushIOLayer(*nd, PR_TOP_IO_LAYER, newstack);
+    PR_ASSERT(PR_SUCCESS == rv);
+    return nbytes;
 }
 
 static PRInt32 PR_CALLBACK pl_DefTransmitfile (
@@ -494,10 +494,9 @@ static PRStatus _PR_DestroyIOLayer(PRFileDesc *stack)
 {
     if (NULL == stack)
         return PR_FAILURE;
-    else {
-        PR_DELETE(stack);
-    	return PR_SUCCESS;
-    }
+
+    PR_DELETE(stack);
+    return PR_SUCCESS;
 }  /* _PR_DestroyIOLayer */
 
 PR_IMPLEMENT(PRStatus) PR_PushIOLayer(
@@ -652,9 +651,11 @@ retry:
         if ((NULL != names) && (identity < length))
         {
             /* what we did is still okay */
-            memcpy(
-                names, identity_cache.name,
-                identity_cache.length * sizeof(char*));
+            if (identity_cache.length != 0) {
+                memcpy(
+                    names, identity_cache.name,
+                    identity_cache.length * sizeof(char*));
+            }
             old = identity_cache.name;
             identity_cache.name = names;
             identity_cache.length = length;
@@ -702,8 +703,8 @@ PR_IMPLEMENT(PRDescIdentity) PR_GetLayersIdentity(PRFileDesc* fd)
     if (PR_IO_LAYER_HEAD == fd->identity) {
     	PR_ASSERT(NULL != fd->lower);
     	return fd->lower->identity;
-	} else
-    	return fd->identity;
+	}
+    return fd->identity;
 }  /* PR_GetLayersIdentity */
 
 PR_IMPLEMENT(PRFileDesc*) PR_GetIdentitiesLayer(PRFileDesc* fd, PRDescIdentity id)
@@ -711,10 +712,10 @@ PR_IMPLEMENT(PRFileDesc*) PR_GetIdentitiesLayer(PRFileDesc* fd, PRDescIdentity i
     PRFileDesc *layer = fd;
 
     if (PR_TOP_IO_LAYER == id) {
-    	if (PR_IO_LAYER_HEAD == fd->identity)
-			return fd->lower;
-		else 
-			return fd;
+      if (PR_IO_LAYER_HEAD == fd->identity) {
+          return fd->lower;
+      }
+      return fd;
 	}
 
     for (layer = fd; layer != NULL; layer = layer->lower)
diff --git a/nsprpub/pr/src/io/prmmap.c b/nsprpub/pr/src/io/prmmap.c
index 6ffc133056..64f7ed4e83 100644
--- a/nsprpub/pr/src/io/prmmap.c
+++ b/nsprpub/pr/src/io/prmmap.c
@@ -24,17 +24,16 @@ PR_IMPLEMENT(PRFileMap *) PR_CreateFileMap(
             || prot == PR_PROT_WRITECOPY);
     fmap = PR_NEWZAP(PRFileMap);
     if (NULL == fmap) {
-	PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
-	return NULL;
+      PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
+      return NULL;
     }
     fmap->fd = fd;
     fmap->prot = prot;
     if (_PR_MD_CREATE_FILE_MAP(fmap, size) == PR_SUCCESS) {
-	return fmap;
-    } else {
+      return fmap;
+    }
 	PR_DELETE(fmap);
 	return NULL;
-    }
 }
 
 PR_IMPLEMENT(PRInt32) PR_GetMemMapAlignment(void)
diff --git a/nsprpub/pr/src/io/prscanf.c b/nsprpub/pr/src/io/prscanf.c
index 9d75d824e8..377a6e6436 100644
--- a/nsprpub/pr/src/io/prscanf.c
+++ b/nsprpub/pr/src/io/prscanf.c
@@ -409,7 +409,8 @@ Convert(ScanfState *state, const char *fmt)
                 ch = GET(state);
                 if (ch == EOF) {
                     return NULL;
-                } else if (state->assign) {
+                }
+                if (state->assign) {
                     *cArg++ = ch;
                 }
             }
@@ -602,10 +603,9 @@ StringGetChar(void *stream)
 
     if (*cPtr == '\0') {
         return EOF;
-    } else {
-        *((char **) stream) = cPtr + 1;
-        return (unsigned char) *cPtr;
     }
+    *((char **) stream) = cPtr + 1;
+    return (unsigned char) *cPtr;
 }
 
 static void
diff --git a/nsprpub/pr/src/io/prsocket.c b/nsprpub/pr/src/io/prsocket.c
index be97024080..a24b8e1bb4 100644
--- a/nsprpub/pr/src/io/prsocket.c
+++ b/nsprpub/pr/src/io/prsocket.c
@@ -7,6 +7,12 @@
 
 #include <string.h>
 
+#if defined(_WIN64)
+#ifndef SO_UPDATE_CONNECT_CONTEXT
+#define SO_UPDATE_CONNECT_CONTEXT 0x7010
+#endif
+#endif
+
 /************************************************************************/
 
 /* These two functions are only used in assertions. */
@@ -304,6 +310,48 @@ static PRStatus PR_CALLBACK SocketConnectContinue(
     }
 
     PR_ASSERT(out_flags & PR_POLL_WRITE);
+
+#if defined(_WIN64)
+    if (fd->secret->alreadyConnected) {
+        fd->secret->alreadyConnected = PR_FALSE;
+    }
+    /* TCP Fast Open on Windows must use ConnectEx, which uses overlapped
+     * input/output.
+     * To get result we need to use GetOverlappedResult. */
+    if (fd->secret->overlappedActive) {
+        PR_ASSERT(fd->secret->nonblocking);
+        PRInt32 rvSent;
+        if (GetOverlappedResult(osfd, &fd->secret->ol, &rvSent, FALSE) == TRUE) {
+            fd->secret->overlappedActive = PR_FALSE;
+            PR_LOG(_pr_io_lm, PR_LOG_MIN,
+               ("SocketConnectContinue GetOverlappedResult succeeded\n"));
+            /* When ConnectEx is used, all previously set socket options and
+             * property are not enabled and to enable them
+             * SO_UPDATE_CONNECT_CONTEXT option need to be set. */
+            if (setsockopt((SOCKET)osfd, SOL_SOCKET, SO_UPDATE_CONNECT_CONTEXT, NULL, 0) != 0) {
+                err = WSAGetLastError();
+                PR_LOG(_pr_io_lm, PR_LOG_MIN,
+                       ("SocketConnectContinue setting SO_UPDATE_CONNECT_CONTEXT failed %d\n", err));
+                _PR_MD_MAP_SETSOCKOPT_ERROR(err);
+                return PR_FAILURE;
+            }
+            return PR_SUCCESS;
+        } else {
+            err = WSAGetLastError();
+            PR_LOG(_pr_io_lm, PR_LOG_MIN,
+               ("SocketConnectContinue GetOverlappedResult failed %d\n", err));
+            if (err != ERROR_IO_INCOMPLETE) {
+                _PR_MD_MAP_CONNECT_ERROR(err);
+                fd->secret->overlappedActive = PR_FALSE;
+                return PR_FAILURE;
+            } else {
+                PR_SetError(PR_IN_PROGRESS_ERROR, 0);
+                return PR_FAILURE;
+            }
+        }
+    }
+#endif
+
     return PR_SUCCESS;
 
 #elif defined(XP_OS2)
@@ -751,7 +799,7 @@ static PRInt32 PR_CALLBACK SocketSendTo(
 #endif
 
 	count = 0;
-	while (amount > 0) {
+	do {
 		temp = _PR_MD_SENDTO(fd, buf, amount, flags,
 		    addrp, PR_NETADDR_SIZE(addr), timeout);
 		if (temp < 0) {
@@ -764,10 +812,60 @@ static PRInt32 PR_CALLBACK SocketSendTo(
 		}
 		buf = (const void*) ((const char*)buf + temp);
 		amount -= temp;
-	}
+	} while (amount > 0);
 	return count;
 }
 
+#if defined(_WIN64) && defined(WIN95)
+static PRInt32 PR_CALLBACK SocketTCPSendTo(
+    PRFileDesc *fd, const void *buf, PRInt32 amount,
+    PRIntn flags, const PRNetAddr *addr, PRIntervalTime timeout)
+{
+    PRInt32 temp, count;
+    const PRNetAddr *addrp = addr;
+#if defined(_PR_INET6)
+    PRNetAddr addrCopy;
+#endif
+    PRThread *me = _PR_MD_CURRENT_THREAD();
+
+    if (_PR_PENDING_INTERRUPT(me)) {
+        me->flags &= ~_PR_INTERRUPT;
+        PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
+        return -1;
+    }
+    if (_PR_IO_PENDING(me)) {
+        PR_SetError(PR_IO_PENDING_ERROR, 0);
+        return -1;
+    }
+
+    PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
+#if defined(_PR_INET6)
+    if (addr->raw.family == PR_AF_INET6) {
+        addrCopy = *addr;
+        addrCopy.raw.family = AF_INET6;
+        addrp = &addrCopy;
+    }
+#endif
+
+    count = 0;
+    while (amount > 0) {
+        temp = _PR_MD_TCPSENDTO(fd, buf, amount, flags,
+                                addrp, PR_NETADDR_SIZE(addr), timeout);
+        if (temp < 0) {
+            count = -1;
+            break;
+        }
+        count += temp;
+        if (fd->secret->nonblocking) {
+            break;
+        }
+        buf = (const void*) ((const char*)buf + temp);
+        amount -= temp;
+    }
+    return count;
+}
+#endif
+
 static PRInt32 PR_CALLBACK SocketRecvFrom(PRFileDesc *fd, void *buf, PRInt32 amount,
 PRIntn flags, PRNetAddr *addr, PRIntervalTime timeout)
 {
@@ -1066,6 +1164,15 @@ static PRInt16 PR_CALLBACK SocketPoll(
     PRFileDesc *fd, PRInt16 in_flags, PRInt16 *out_flags)
 {
     *out_flags = 0;
+
+#if defined(_WIN64)
+    if (in_flags & PR_POLL_WRITE) {
+        if (fd->secret->alreadyConnected) {
+            out_flags = PR_POLL_WRITE;
+            return PR_POLL_WRITE;
+        }
+    }
+#endif
     return in_flags;
 }  /* SocketPoll */
 
@@ -1090,7 +1197,11 @@ static PRIOMethods tcpMethods = {
 	SocketRecv,
 	SocketSend,
 	(PRRecvfromFN)_PR_InvalidInt,
+#if defined(_WIN64) && defined(WIN95)
+	SocketTCPSendTo, /* This is for fast open. We imitate Linux interface. */
+#else
 	(PRSendtoFN)_PR_InvalidInt,
+#endif
 	SocketPoll,
 	SocketAcceptRead,
 	SocketTransmitFile,
diff --git a/nsprpub/pr/src/md/unix/unix.c b/nsprpub/pr/src/md/unix/unix.c
index fdae1199ce..662f561b6f 100644
--- a/nsprpub/pr/src/md/unix/unix.c
+++ b/nsprpub/pr/src/md/unix/unix.c
@@ -3316,11 +3316,11 @@ int _MD_unix_get_nonblocking_connect_error(int osfd)
                 return errno;
             } else {
                 return err;
-            }		
+            }
         }
     } else {
         return ECONNREFUSED;
-    }	
+    }
 #elif defined(UNIXWARE)
     /*
      * getsockopt() fails with EPIPE, so use getmsg() instead.
@@ -3331,17 +3331,17 @@ int _MD_unix_get_nonblocking_connect_error(int osfd)
     rv = getmsg(osfd, NULL, NULL, &flags);
     PR_ASSERT(-1 == rv || 0 == rv);
     if (-1 == rv && errno != EAGAIN && errno != EWOULDBLOCK) {
-        return errno;
+      return errno;
     }
-    return 0;  /* no error */
+    return 0; /* no error */
 #else
-    int err;
-    _PRSockLen_t optlen = sizeof(err);
-    if (getsockopt(osfd, SOL_SOCKET, SO_ERROR, (char *) &err, &optlen) == -1) {
-        return errno;
-    } else {
-        return err;
-    }
+  int err;
+  _PRSockLen_t optlen = sizeof(err);
+  if (getsockopt(osfd, SOL_SOCKET, SO_ERROR, (char*)&err, &optlen) == -1) {
+    return errno;
+  }
+  return err;
+
 #endif
 }
 
diff --git a/nsprpub/pr/src/md/unix/uxproces.c b/nsprpub/pr/src/md/unix/uxproces.c
index a3b35e540b..5286b9e185 100644
--- a/nsprpub/pr/src/md/unix/uxproces.c
+++ b/nsprpub/pr/src/md/unix/uxproces.c
@@ -247,13 +247,14 @@ ForkAndExec(
             PR_DELETE(newEnvp);
         }
         return NULL;
-    } else if (0 == process->md.pid) {  /* the child process */
-        /*
-         * If the child process needs to exit, it must call _exit().
-         * Do not call exit(), because exit() will flush and close
-         * the standard I/O file descriptors, and hence corrupt
-         * the parent process's standard I/O data structures.
-         */
+    }
+    if (0 == process->md.pid) {  /* the child process */
+      /*
+       * If the child process needs to exit, it must call _exit().
+       * Do not call exit(), because exit() will flush and close
+       * the standard I/O file descriptors, and hence corrupt
+       * the parent process's standard I/O data structures.
+       */
 
 #if !defined(NTO) && !defined(SYMBIAN)
         if (attr) {
@@ -498,10 +499,9 @@ ExtractExitStatus(int rawExitStatus)
 #endif
     if (WIFEXITED(rawExitStatus)) {
 	return WEXITSTATUS(rawExitStatus);
-    } else {
+    }
 	PR_ASSERT(WIFSIGNALED(rawExitStatus));
 	return _PR_SIGNALED_EXITSTATUS;
-    }
 }
 
 static void
@@ -624,8 +624,8 @@ static void WaitPidDaemonThread(void *unused)
         } while (sizeof(buf) == rv || (-1 == rv && EINTR == errno));
 
 #ifdef _PR_SHARE_CLONES
-	PR_Unlock(pr_wp.ml);
 	while ((op = pr_wp.opHead) != NULL) {
+	    PR_Unlock(pr_wp.ml);
 	    op->process = ForkAndExec(op->path, op->argv,
 		    op->envp, op->attr);
 	    if (NULL == op->process) {
@@ -639,8 +639,8 @@ static void WaitPidDaemonThread(void *unused)
 	    }
 	    op->done = PR_TRUE;
 	    PR_NotifyCondVar(op->doneCV);
-	    PR_Unlock(pr_wp.ml);
 	}
+	PR_Unlock(pr_wp.ml);
 #endif
 
 	while (1) {
diff --git a/nsprpub/pr/src/md/unix/uxshm.c b/nsprpub/pr/src/md/unix/uxshm.c
index dec4e3a7af..54e68191cd 100644
--- a/nsprpub/pr/src/md/unix/uxshm.c
+++ b/nsprpub/pr/src/md/unix/uxshm.c
@@ -76,8 +76,8 @@ extern PRSharedMemory * _MD_OpenSharedMemory(
 
     /* copy args to struct */
     strcpy( shm->ipcname, ipcname );
-    shm->size = size; 
-    shm->mode = mode; 
+    shm->size = size;
+    shm->mode = mode;
     shm->flags = flags;
     shm->ident = _PR_SHM_IDENT;
 
@@ -500,30 +500,32 @@ extern PRFileMap* _md_OpenAnonFileMap(
                 ("_md_OpenAnonFileMap(): PR_snprintf(): failed, generating filename"));
             goto Finished;
         }
-        
+
         /* create the file */
-        osfd = open( genName, (O_CREAT | O_EXCL | O_RDWR), mode );
-        if ( -1 == osfd ) {
-            if ( EEXIST == errno )  {
-                PR_smprintf_free( genName );
-                continue; /* name exists, try again */
-            } else {
-                _PR_MD_MAP_OPEN_ERROR( errno );
-                PR_LOG( _pr_shma_lm, PR_LOG_DEBUG,
-                    ("_md_OpenAnonFileMap(): open(): failed, filename: %s, errno: %d", 
-                        genName, PR_GetOSError()));
-                PR_smprintf_free( genName );
-                goto Finished;
-            }
+        osfd = open(genName, (O_CREAT | O_EXCL | O_RDWR), mode);
+        if (-1 == osfd) {
+          if (EEXIST == errno) {
+            PR_smprintf_free(genName);
+            continue; /* name exists, try again */
+          }
+          _PR_MD_MAP_OPEN_ERROR(errno);
+          PR_LOG(
+            _pr_shma_lm,
+            PR_LOG_DEBUG,
+            ("_md_OpenAnonFileMap(): open(): failed, filename: %s, errno: %d",
+             genName,
+             PR_GetOSError()));
+          PR_smprintf_free(genName);
+          goto Finished;
         }
         break; /* name generation and open successful, break; */
     } /* end for() */
 
-    if ( incr == maxTries ) {
-        PR_ASSERT( -1 == osfd );
-        PR_ASSERT( EEXIST == errno );
-        _PR_MD_MAP_OPEN_ERROR( errno );
-        goto Finished;
+    if (incr == maxTries) {
+      PR_ASSERT(-1 == osfd);
+      PR_ASSERT(EEXIST == errno);
+      _PR_MD_MAP_OPEN_ERROR(errno);
+      goto Finished;
     }
 
     urc = unlink( genName );
diff --git a/nsprpub/pr/src/md/windows/w32poll.c b/nsprpub/pr/src/md/windows/w32poll.c
index 84100763b0..daf14dfe05 100644
--- a/nsprpub/pr/src/md/windows/w32poll.c
+++ b/nsprpub/pr/src/md/windows/w32poll.c
@@ -155,7 +155,7 @@ PRInt32 _PR_MD_PR_POLL(PRPollDesc *pds, PRIntn npds, PRIntervalTime timeout)
                 pd->out_flags = 0;  /* pre-condition */
                 /* make sure this is an NSPR supported stack */
                 bottom = PR_GetIdentitiesLayer(pd->fd, PR_NSPR_IO_LAYER);
-                // ignore a socket without PR_NSPR_IO_LAYER available.
+                /* ignore a socket without PR_NSPR_IO_LAYER available */
 
                 if ((NULL != bottom)
                 && (_PR_FILEDESC_OPEN == bottom->secret->state))
diff --git a/nsprpub/pr/src/md/windows/w95sock.c b/nsprpub/pr/src/md/windows/w95sock.c
index 1c3ddd9110..0429c655aa 100644
--- a/nsprpub/pr/src/md/windows/w95sock.c
+++ b/nsprpub/pr/src/md/windows/w95sock.c
@@ -294,8 +294,7 @@ _PR_MD_SENDTO(PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags,
     PRInt32 rv, err;
     PRInt32 bytesSent = 0;
 
-    while(bytesSent < amount) 
-    {
+    do {
         while ((rv = sendto( osfd, buf, amount, 0, (struct sockaddr *) addr,
                 addrlen)) == -1) 
         {
@@ -327,10 +326,177 @@ _PR_MD_SENDTO(PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags,
                 return -1;
             }
         }
-    }
+    } while(bytesSent < amount);
     return bytesSent;
 }
 
+#if defined(_WIN64)
+
+static PRCallOnceType _pr_has_connectex_once;
+typedef BOOL (PASCAL FAR * _pr_win_connectex_ptr)(_In_ SOCKET s, _In_reads_bytes_(namelen) const struct sockaddr FAR *name, _In_ int namelen, _In_reads_bytes_opt_(dwSendDataLength) PVOID lpSendBuffer, _In_ DWORD dwSendDataLength, _Out_ LPDWORD lpdwBytesSent, _Inout_ LPOVERLAPPED lpOverlapped);
+
+#ifndef WSAID_CONNECTEX
+#define WSAID_CONNECTEX \
+  {0x25a207b9,0xddf3,0x4660,{0x8e,0xe9,0x76,0xe5,0x8c,0x74,0x06,0x3e}}
+#endif
+#ifndef SIO_GET_EXTENSION_FUNCTION_POINTER
+#define SIO_GET_EXTENSION_FUNCTION_POINTER 0xC8000006
+#endif
+#ifndef TCP_FASTOPEN
+#define TCP_FASTOPEN 15
+#endif
+
+#ifndef SO_UPDATE_CONNECT_CONTEXT
+#define SO_UPDATE_CONNECT_CONTEXT 0x7010
+#endif
+
+static _pr_win_connectex_ptr _pr_win_connectex = NULL;
+
+static PRStatus PR_CALLBACK _pr_set_connectex(void)
+{
+    _pr_win_connectex = NULL;
+    SOCKET sock;
+    PRInt32 dwBytes;
+    int rc;
+
+    /* Dummy socket needed for WSAIoctl */
+    sock = socket(AF_INET, SOCK_STREAM, 0);
+    if (sock == INVALID_SOCKET)
+        return PR_SUCCESS;
+
+    GUID guid = WSAID_CONNECTEX;
+    rc = WSAIoctl(sock, SIO_GET_EXTENSION_FUNCTION_POINTER,
+                  &guid, sizeof(guid),
+                  &_pr_win_connectex, sizeof(_pr_win_connectex),
+                  &dwBytes, NULL, NULL);
+    if (rc != 0) {
+        _pr_win_connectex = NULL;
+        return PR_SUCCESS;
+    }
+
+    rc = closesocket(sock);
+    return PR_SUCCESS;
+}
+
+PRInt32
+_PR_MD_TCPSENDTO(PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags,
+                 const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout)
+{
+    if (PR_CallOnce(&_pr_has_connectex_once, _pr_set_connectex) != PR_SUCCESS) {
+        PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
+        return PR_FAILURE;
+    }
+
+    if (_pr_win_connectex == NULL) {
+        PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
+        return PR_FAILURE;
+    }
+
+    PROsfd osfd = fd->secret->md.osfd;
+    PRInt32 rv, err;
+    PRInt32 bytesSent = 0;
+    DWORD rvSent;
+
+    BOOL option = 1;
+    rv = setsockopt((SOCKET)osfd, IPPROTO_TCP, TCP_FASTOPEN, (char*)&option, sizeof(option));
+    if (rv != 0) {
+        err = WSAGetLastError();
+        PR_LOG(_pr_io_lm, PR_LOG_MIN,
+               ("_PR_MD_TCPSENDTO error set opt TCP_FASTOPEN failed %d\n", err));
+        if (err == WSAENOPROTOOPT) {
+            PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
+        } else {
+            _PR_MD_MAP_SETSOCKOPT_ERROR(err);
+        }
+        return -1;
+    }
+
+    /* ConnectEx requires the socket to be initially bound. We will use INADDR_ANY. */
+    PRNetAddr bindAddr;
+    memset(&bindAddr, 0, sizeof(bindAddr));
+    bindAddr.raw.family = addr->raw.family;
+
+    rv = bind((SOCKET)osfd, (const struct sockaddr *)&(bindAddr.inet), PR_NETADDR_SIZE(&bindAddr));
+    if (rv != 0) {
+        err = WSAGetLastError();
+        PR_LOG(_pr_io_lm, PR_LOG_MIN,
+               ("_PR_MD_TCPSENDTO error bind failed %d\n", err));
+        _PR_MD_MAP_SETSOCKOPT_ERROR(err);
+        return -1;
+    }
+
+    PR_LOG(_pr_io_lm, PR_LOG_MIN,
+           ("_PR_MD_TCPSENDTO calling _pr_win_connectex  %d %p\n", amount, (char*)buf));
+
+    rvSent = 0;
+    memset(&fd->secret->ol, 0, sizeof(fd->secret->ol));
+    /* ConnectEx return TRUE on a success and FALSE on an error. */
+    if (_pr_win_connectex( (SOCKET)osfd, (struct sockaddr *) addr,
+                           addrlen, buf, amount,
+                           &rvSent, &fd->secret->ol) == TRUE) {
+        /* When ConnectEx is used, all previously set socket options and
+         * property are not enabled and to enable them
+         * SO_UPDATE_CONNECT_CONTEXT option need to be set. */
+        rv = setsockopt((SOCKET)osfd, SOL_SOCKET, SO_UPDATE_CONNECT_CONTEXT, NULL, 0);
+        if (rv != 0) {
+            err = WSAGetLastError();
+            PR_LOG(_pr_io_lm, PR_LOG_MIN,
+               ("_PR_MD_TCPSENDTO setting SO_UPDATE_CONNECT_CONTEXT failed %d\n", err));
+            _PR_MD_MAP_SETSOCKOPT_ERROR(err);
+            return -1;
+        }
+        /* We imitate Linux here. SendTo will return number of bytes send but
+         * it can not return connection success at the same time, so we return
+         * number of bytes send and "connection success" will be return on the
+         * connectcontinue. */
+        fd->secret->alreadyConnected = PR_TRUE;
+        return rvSent;
+    } else {
+        err = WSAGetLastError();
+        PR_LOG(_pr_io_lm, PR_LOG_MIN,
+               ("_PR_MD_TCPSENDTO error _pr_win_connectex failed %d\n", err));
+        if (err != ERROR_IO_PENDING) {
+            _PR_MD_MAP_CONNECT_ERROR(err);
+            return -1;
+        } else if (fd->secret->nonblocking) {
+            /* Remember that overlapped structure is set. We will need to get
+             * the final result of ConnectEx call. */
+            fd->secret->overlappedActive = PR_TRUE;
+
+            /* ConnectEx will copy supplied data to a internal buffer and send
+             * them during Fast Open or after connect. Therefore we can assumed
+             * this data already send. */
+            if (amount > 0) {
+              return amount;
+            }
+
+            _PR_MD_MAP_CONNECT_ERROR(WSAEWOULDBLOCK);
+            return -1;
+        }
+        // err is ERROR_IO_PENDING and socket is blocking, so query
+        // GetOverlappedResult.
+        err = ERROR_IO_INCOMPLETE;
+        while (err == ERROR_IO_INCOMPLETE) {
+            rv = socket_io_wait(osfd, WRITE_FD, timeout);
+            if ( rv < 0 ) {
+                return -1;
+            }
+            rv = GetOverlappedResult(osfd, &fd->secret->ol, &rvSent, FALSE);
+            if ( rv == TRUE ) {
+                return rvSent;
+            } else {
+                err = WSAGetLastError();
+                if (err != ERROR_IO_INCOMPLETE) {
+                    _PR_MD_MAP_CONNECT_ERROR(err);
+                    return -1;
+                }
+            }
+        }
+    }
+    return -1;
+}
+#endif
+
 PRInt32
 _PR_MD_RECVFROM(PRFileDesc *fd, void *buf, PRInt32 amount, PRIntn flags,
                 PRNetAddr *addr, PRUint32 *addrlen, PRIntervalTime timeout)
diff --git a/nsprpub/pr/src/misc/praton.c b/nsprpub/pr/src/misc/praton.c
index bff0cd1513..80c0628cc2 100644
--- a/nsprpub/pr/src/misc/praton.c
+++ b/nsprpub/pr/src/misc/praton.c
@@ -177,19 +177,21 @@ pr_inet_aton(const char *cp, PRUint32 *addr)
     case 2:                /*%< a.b -- 8.24 bits */
         if (val > 0xffffffU)
             return (0);
-        val |= parts[0] << 24;
+        val |= (unsigned int)parts[0] << 24;
         break;
 
     case 3:                /*%< a.b.c -- 8.8.16 bits */
         if (val > 0xffffU)
             return (0);
-        val |= (parts[0] << 24) | (parts[1] << 16);
+        val |= ((unsigned int)parts[0] << 24) | ((unsigned int)parts[1] << 16);
         break;
 
     case 4:                /*%< a.b.c.d -- 8.8.8.8 bits */
         if (val > 0xffU)
             return (0);
-        val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
+        val |= ((unsigned int)parts[0] << 24) |
+               ((unsigned int)parts[1] << 16) |
+               ((unsigned int)parts[2] << 8);
         break;
     }
     *addr = PR_htonl(val);
diff --git a/nsprpub/pr/src/misc/prnetdb.c b/nsprpub/pr/src/misc/prnetdb.c
index b2f6e435b5..affebf6ac3 100644
--- a/nsprpub/pr/src/misc/prnetdb.c
+++ b/nsprpub/pr/src/misc/prnetdb.c
@@ -1405,7 +1405,7 @@ PR_IMPLEMENT(PRStatus) PR_InitializeNetAddr(
     PRStatus rv = PR_SUCCESS;
     if (!_pr_initialized) _PR_ImplicitInitialization();
 
-	if (val != PR_IpAddrNull) memset(addr, 0, sizeof(addr->inet));
+	if (val != PR_IpAddrNull) memset(addr, 0, sizeof(*addr));
 	addr->inet.family = AF_INET;
 	addr->inet.port = htons(port);
 	switch (val)
@@ -1483,18 +1483,20 @@ PR_IsNetAddrType(const PRNetAddr *addr, PRNetAddrValue val)
         if (val == PR_IpAddrAny) {
 			if (_PR_IN6_IS_ADDR_UNSPECIFIED((PRIPv6Addr *)&addr->ipv6.ip)) {
             	return PR_TRUE;
-			} else if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr->ipv6.ip)
-					&& _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Addr *)&addr->ipv6.ip)
-							== htonl(INADDR_ANY)) {
-            	return PR_TRUE;
+			}
+            if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr->ipv6.ip)
+                && _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Addr *)&addr->ipv6.ip)
+                == htonl(INADDR_ANY)) {
+                return PR_TRUE;
 			}
         } else if (val == PR_IpAddrLoopback) {
             if (_PR_IN6_IS_ADDR_LOOPBACK((PRIPv6Addr *)&addr->ipv6.ip)) {
             	return PR_TRUE;
-			} else if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr->ipv6.ip)
-					&& _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Addr *)&addr->ipv6.ip)
-							== htonl(INADDR_LOOPBACK)) {
-            	return PR_TRUE;
+			}
+            if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr->ipv6.ip)
+                && _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Addr *)&addr->ipv6.ip)
+                == htonl(INADDR_LOOPBACK)) {
+                return PR_TRUE;
 			}
         } else if (val == PR_IpAddrV4Mapped
                 && _PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr->ipv6.ip)) {
@@ -1504,8 +1506,9 @@ PR_IsNetAddrType(const PRNetAddr *addr, PRNetAddrValue val)
         if (addr->raw.family == AF_INET) {
             if (val == PR_IpAddrAny && addr->inet.ip == htonl(INADDR_ANY)) {
                 return PR_TRUE;
-            } else if (val == PR_IpAddrLoopback
-                    && addr->inet.ip == htonl(INADDR_LOOPBACK)) {
+            }
+            if (val == PR_IpAddrLoopback
+                && addr->inet.ip == htonl(INADDR_LOOPBACK)) {
                 return PR_TRUE;
             }
         }
@@ -1777,18 +1780,12 @@ PR_IMPLEMENT(PRUint64) PR_ntohll(PRUint64 n)
 #ifdef IS_BIG_ENDIAN
     return n;
 #else
-    PRUint64 tmp;
     PRUint32 hi, lo;
-    LL_L2UI(lo, n);
-    LL_SHR(tmp, n, 32);
-    LL_L2UI(hi, tmp);
+    lo = (PRUint32)n;
+    hi = (PRUint32)(n >> 32);
     hi = PR_ntohl(hi);
     lo = PR_ntohl(lo);
-    LL_UI2L(n, lo);
-    LL_SHL(n, n, 32);
-    LL_UI2L(tmp, hi);
-    LL_ADD(n, n, tmp);
-    return n;
+    return ((PRUint64)lo << 32) + (PRUint64)hi;
 #endif
 }  /* ntohll */
 
@@ -1797,18 +1794,12 @@ PR_IMPLEMENT(PRUint64) PR_htonll(PRUint64 n)
 #ifdef IS_BIG_ENDIAN
     return n;
 #else
-    PRUint64 tmp;
     PRUint32 hi, lo;
-    LL_L2UI(lo, n);
-    LL_SHR(tmp, n, 32);
-    LL_L2UI(hi, tmp);
+    lo = (PRUint32)n;
+    hi = (PRUint32)(n >> 32);
     hi = htonl(hi);
     lo = htonl(lo);
-    LL_UI2L(n, lo);
-    LL_SHL(n, n, 32);
-    LL_UI2L(tmp, hi);
-    LL_ADD(n, n, tmp);
-    return n;
+    return ((PRUint64)lo << 32) + (PRUint64)hi;
 #endif
 }  /* htonll */
 
diff --git a/nsprpub/pr/src/misc/prtime.c b/nsprpub/pr/src/misc/prtime.c
index 6735805d81..f037860967 100644
--- a/nsprpub/pr/src/misc/prtime.c
+++ b/nsprpub/pr/src/misc/prtime.c
@@ -279,8 +279,7 @@ static int IsLeapYear(PRInt16 year)
 {
     if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
         return 1;
-    else
-        return 0;
+    return 0;
 }
 
 /*
@@ -495,6 +494,20 @@ PR_NormalizeTime(PRExplodedTime *time, PRTimeParamFn params)
 
 #define MT_safe_localtime localtime_r
 
+#elif defined(_MSC_VER)
+
+/* Visual C++ has had localtime_s() since Visual C++ 2005. */
+
+static struct tm *MT_safe_localtime(const time_t *clock, struct tm *result)
+{
+    errno_t err = localtime_s(result, clock);
+    if (err != 0) {
+        errno = err;
+        return NULL;
+    }
+    return result;
+}
+
 #else
 
 #define HAVE_LOCALTIME_MONITOR 1  /* We use 'monitor' to serialize our calls
@@ -580,6 +593,7 @@ PR_LocalTimeParameters(const PRExplodedTime *gmt)
 
     PRTimeParameters retVal;
     struct tm localTime;
+    struct tm *localTimeResult;
     time_t secs;
     PRTime secs64;
     PRInt64 usecPerSec;
@@ -606,7 +620,12 @@ PR_LocalTimeParameters(const PRExplodedTime *gmt)
      */
 
     secs = 86400L;
-    (void) MT_safe_localtime(&secs, &localTime);
+    localTimeResult = MT_safe_localtime(&secs, &localTime);
+    PR_ASSERT(localTimeResult != NULL);
+    if (localTimeResult == NULL) {
+        /* Shouldn't happen. Use safe fallback for optimized builds. */
+        return PR_GMTParameters(gmt);
+    }
 
     /* GMT is 00:00:00, 2nd of Jan. */
 
@@ -957,6 +976,7 @@ PR_ParseTimeStringToExplodedTime(
   int hour = -1;
   int min = -1;
   int sec = -1;
+  struct tm *localTimeResult;
 
   const char *rest = string;
 
@@ -1215,7 +1235,7 @@ PR_ParseTimeStringToExplodedTime(
                                 if ((end - rest) > 2)
                                   /* it is [0-9][0-9][0-9]+: */
                                   break;
-                                else if ((end - rest) == 2)
+                                if ((end - rest) == 2)
                                   tmp_hour = ((rest[0]-'0')*10 +
                                                           (rest[1]-'0'));
                                 else
@@ -1230,12 +1250,12 @@ PR_ParseTimeStringToExplodedTime(
                                 if (end == rest)
                                   /* no digits after first colon? */
                                   break;
-                                else if ((end - rest) > 2)
+                                if ((end - rest) > 2)
                                   /* it is [0-9][0-9][0-9]+: */
                                   break;
-                                else if ((end - rest) == 2)
+                                if ((end - rest) == 2)
                                   tmp_min = ((rest[0]-'0')*10 +
-                                                         (rest[1]-'0'));
+                                             (rest[1]-'0'));
                                 else
                                   tmp_min = (rest[0]-'0');
 
@@ -1253,7 +1273,7 @@ PR_ParseTimeStringToExplodedTime(
                                 else if ((end - rest) > 2)
                                   /* it is [0-9][0-9][0-9]+: */
                                   break;
-                                else if ((end - rest) == 2)
+                                if ((end - rest) == 2)
                                   tmp_sec = ((rest[0]-'0')*10 +
                                                          (rest[1]-'0'));
                                 else
@@ -1287,7 +1307,7 @@ PR_ParseTimeStringToExplodedTime(
                                 rest = end;
                                 break;
                           }
-                        else if ((*end == '/' || *end == '-') &&
+                        if ((*end == '/' || *end == '-') &&
                                          end[1] >= '0' && end[1] <= '9')
                           {
                                 /* Perhaps this is 6/16/95, 16/6/95, 6-16-95, or 16-6-95
@@ -1618,7 +1638,11 @@ PR_ParseTimeStringToExplodedTime(
                    zone_offset for the date we are parsing is the same as
                    the zone offset on 00:00:00 2 Jan 1970 GMT. */
                 secs = 86400;
-                (void) MT_safe_localtime(&secs, &localTime);
+                localTimeResult = MT_safe_localtime(&secs, &localTime);
+                PR_ASSERT(localTimeResult != NULL);
+                if (localTimeResult == NULL) {
+                    return PR_FAILURE;
+                }
                 zone_offset = localTime.tm_min
                               + 60 * localTime.tm_hour
                               + 1440 * (localTime.tm_mday - 2);
@@ -1989,24 +2013,22 @@ pr_WeekOfYear(const PRExplodedTime* time, unsigned int firstDayOfWeek)
   dayOfWeek = time->tm_wday - firstDayOfWeek;
   if (dayOfWeek < 0)
     dayOfWeek += 7;
-  
-  dayOfYear = time->tm_yday - dayOfWeek;
 
+  dayOfYear = time->tm_yday - dayOfWeek;
 
   if( dayOfYear <= 0 )
   {
      /* If dayOfYear is <= 0, it is in the first partial week of the year. */
      return 0;
   }
-  else
-  {
-     /* Count the number of full weeks ( dayOfYear / 7 ) then add a week if there
-      * are any days left over ( dayOfYear % 7 ).  Because we are only counting to
-      * the first day of the week containing the given time, rather than to the
-      * actual day representing the given time, any days in week 0 will be "absorbed"
-      * as extra days in the given week.
-      */
-     return (dayOfYear / 7) + ( (dayOfYear % 7) == 0 ? 0 : 1 );
-  }
+
+  /* Count the number of full weeks ( dayOfYear / 7 ) then add a week if there
+   * are any days left over ( dayOfYear % 7 ).  Because we are only counting to
+   * the first day of the week containing the given time, rather than to the
+   * actual day representing the given time, any days in week 0 will be "absorbed"
+   * as extra days in the given week.
+   */
+  return (dayOfYear / 7) + ( (dayOfYear % 7) == 0 ? 0 : 1 );
+
 }
 
diff --git a/nsprpub/pr/src/misc/prtpool.c b/nsprpub/pr/src/misc/prtpool.c
index 0671cc19b1..c2cc9c8039 100644
--- a/nsprpub/pr/src/misc/prtpool.c
+++ b/nsprpub/pr/src/misc/prtpool.c
@@ -862,16 +862,16 @@ PR_QueueJob_Connect(PRThreadPool *tpool, PRJobIoDesc *iod,
 	if ((rv == PR_FAILURE) && ((err = PR_GetError()) == PR_IN_PROGRESS_ERROR)){
 		/* connection pending */
 		return(queue_io_job(tpool, iod, fn, arg, joinable, JOB_IO_CONNECT));
-	} else {
-		/*
-		 * connection succeeded or failed; add to jobq right away
-		 */
-		if (rv == PR_FAILURE)
-			iod->error = err;
-		else
-			iod->error = 0;
-		return(PR_QueueJob(tpool, fn, arg, joinable));
 	}
+    /*
+     * connection succeeded or failed; add to jobq right away
+     */
+    if (rv == PR_FAILURE)
+      iod->error = err;
+    else
+      iod->error = 0;
+    return(PR_QueueJob(tpool, fn, arg, joinable));
+
 }
 
 /* queue a job, when a timer expires */
diff --git a/nsprpub/pr/src/prvrsion.c b/nsprpub/pr/src/prvrsion.c
index 67be53827a..be43578ca7 100644
--- a/nsprpub/pr/src/prvrsion.c
+++ b/nsprpub/pr/src/prvrsion.c
@@ -74,6 +74,10 @@ static char sccsid[] = "@(#)NSPR " PR_VERSION _DEBUG_STRING
 
 #endif /* XP_UNIX */
 
+#ifdef _PR_HAS_PRAGMA_DIAGNOSTIC
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#endif
 PR_IMPLEMENT(const PRVersionDescription*) libVersionPoint(void)
 {
 #ifdef XP_UNIX
@@ -88,6 +92,9 @@ PR_IMPLEMENT(const PRVersionDescription*) libVersionPoint(void)
 #endif
     return &VERSION_DESC_NAME;
 }  /* versionEntryPointType */
+#ifdef _PR_HAS_PRAGMA_DIAGNOSTIC
+#pragma GCC diagnostic pop
+#endif
 
 /* prvrsion.c */
 
diff --git a/nsprpub/pr/src/pthreads/ptio.c b/nsprpub/pr/src/pthreads/ptio.c
index e4fe5198bb..9dde031912 100644
--- a/nsprpub/pr/src/pthreads/ptio.c
+++ b/nsprpub/pr/src/pthreads/ptio.c
@@ -164,6 +164,9 @@ static ssize_t (*pt_aix_sendfile_fptr)() = NULL;
 #ifndef TCP_CORK
 #define TCP_CORK 3
 #endif
+#ifndef MSG_FASTOPEN
+#define MSG_FASTOPEN    0x20000000
+#endif
 #endif
 
 #ifdef _PR_IPV6_V6ONLY_PROBE
@@ -821,7 +824,7 @@ retry:
         op->arg3.amount -= bytes;  /* and reduce the required count */
         return (0 == op->arg3.amount) ? PR_TRUE : PR_FALSE;
     }
-    else if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
+    if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
     {
         op->result.code = -1;
         return PR_TRUE;
@@ -850,7 +853,7 @@ static PRBool pt_write_cont(pt_Continuation *op, PRInt16 revents)
         op->arg3.amount -= bytes;  /* and reduce the required count */
         return (0 == op->arg3.amount) ? PR_TRUE : PR_FALSE;
     }
-    else if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
+    if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
     {
         op->result.code = -1;
         return PR_TRUE;
@@ -892,7 +895,7 @@ static PRBool pt_writev_cont(pt_Continuation *op, PRInt16 revents)
         op->arg3.amount -= iov_index;  /* and array length */
         return (0 == op->arg3.amount) ? PR_TRUE : PR_FALSE;
     }
-    else if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
+    if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
     {
         op->result.code = -1;
         return PR_TRUE;
@@ -915,7 +918,7 @@ static PRBool pt_sendto_cont(pt_Continuation *op, PRInt16 revents)
         op->arg3.amount -= bytes;  /* and reduce the required count */
         return (0 == op->arg3.amount) ? PR_TRUE : PR_FALSE;
     }
-    else if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
+    if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
     {
         op->result.code = -1;
         return PR_TRUE;
@@ -1542,23 +1545,26 @@ static PRStatus pt_Connect(
     pt_SockLen addr_len;
 	const PRNetAddr *addrp = addr;
 #if defined(_PR_HAVE_SOCKADDR_LEN) || defined(_PR_INET6)
-	PRUint16 md_af = addr->raw.family;
     PRNetAddr addrCopy;
 #endif
+#ifdef _PR_HAVE_SOCKADDR_LEN
+    PRUint16 md_af = addr->raw.family;
+#endif
 
     if (pt_TestAbort()) return PR_FAILURE;
 
     PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
     addr_len = PR_NETADDR_SIZE(addr);
-#if defined(_PR_INET6)
-	if (addr->raw.family == PR_AF_INET6) {
-		md_af = AF_INET6;
-#ifndef _PR_HAVE_SOCKADDR_LEN
-		addrCopy = *addr;
-		addrCopy.raw.family = AF_INET6;
-		addrp = &addrCopy;
+#ifdef _PR_INET6
+    if (addr->raw.family == PR_AF_INET6) {
+#ifdef _PR_HAVE_SOCKADDR_LEN
+        md_af = AF_INET6;
+#else
+        addrCopy = *addr;
+        addrCopy.raw.family = AF_INET6;
+        addrp = &addrCopy;
 #endif
-	}
+    }
 #endif
 
 #ifdef _PR_HAVE_SOCKADDR_LEN
@@ -1732,9 +1738,11 @@ static PRStatus pt_Bind(PRFileDesc *fd, const PRNetAddr *addr)
     pt_SockLen addr_len;
 	const PRNetAddr *addrp = addr;
 #if defined(_PR_HAVE_SOCKADDR_LEN) || defined(_PR_INET6)
-	PRUint16 md_af = addr->raw.family;
     PRNetAddr addrCopy;
 #endif
+#ifdef _PR_HAVE_SOCKADDR_LEN
+    PRUint16 md_af = addr->raw.family;
+#endif
 
     if (pt_TestAbort()) return PR_FAILURE;
 
@@ -1749,15 +1757,16 @@ static PRStatus pt_Bind(PRFileDesc *fd, const PRNetAddr *addr)
         }
     }
 
-#if defined(_PR_INET6)
-	if (addr->raw.family == PR_AF_INET6) {
-		md_af = AF_INET6;
-#ifndef _PR_HAVE_SOCKADDR_LEN
-		addrCopy = *addr;
-		addrCopy.raw.family = AF_INET6;
-		addrp = &addrCopy;
+#ifdef _PR_INET6
+    if (addr->raw.family == PR_AF_INET6) {
+#ifdef _PR_HAVE_SOCKADDR_LEN
+        md_af = AF_INET6;
+#else
+        addrCopy = *addr;
+        addrCopy.raw.family = AF_INET6;
+        addrp = &addrCopy;
 #endif
-	}
+    }
 #endif
 
     addr_len = PR_NETADDR_SIZE(addr);
@@ -1989,22 +1998,25 @@ static PRInt32 pt_SendTo(
     pt_SockLen addr_len;
 	const PRNetAddr *addrp = addr;
 #if defined(_PR_HAVE_SOCKADDR_LEN) || defined(_PR_INET6)
-	PRUint16 md_af = addr->raw.family;
     PRNetAddr addrCopy;
 #endif
+#ifdef _PR_HAVE_SOCKADDR_LEN
+    PRUint16 md_af = addr->raw.family;
+#endif
 
     if (pt_TestAbort()) return bytes;
 
     PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
-#if defined(_PR_INET6)
-	if (addr->raw.family == PR_AF_INET6) {
-		md_af = AF_INET6;
-#ifndef _PR_HAVE_SOCKADDR_LEN
-		addrCopy = *addr;
-		addrCopy.raw.family = AF_INET6;
-		addrp = &addrCopy;
+#ifdef _PR_INET6
+    if (addr->raw.family == PR_AF_INET6) {
+#ifdef _PR_HAVE_SOCKADDR_LEN
+        md_af = AF_INET6;
+#else
+        addrCopy = *addr;
+        addrCopy.raw.family = AF_INET6;
+        addrp = &addrCopy;
 #endif
-	}
+    }
 #endif
 
     addr_len = PR_NETADDR_SIZE(addr);
@@ -2044,6 +2056,101 @@ static PRInt32 pt_SendTo(
     return bytes;
 }  /* pt_SendTo */
 
+#if defined(LINUX) || defined(DARWIN)
+/* Linux uses SendTo to send data during TCP Fast Open. OSX uses connectx, but
+ * we will make it imitate the Linux's interface. */
+static PRInt32 pt_TCP_SendTo(
+    PRFileDesc *fd, const void *buf,
+    PRInt32 amount, PRIntn flags, const PRNetAddr *addr,
+    PRIntervalTime timeout)
+{
+#if defined(LINUX) || HAS_CONNECTX
+    PRInt32 syserrno, bytes = -1;
+    PRBool fNeedContinue = PR_FALSE;
+    pt_SockLen addr_len;
+    const PRNetAddr *addrp = addr;
+#if defined(_PR_HAVE_SOCKADDR_LEN) || defined(_PR_INET6)
+    PRNetAddr addrCopy;
+#endif
+#ifdef _PR_HAVE_SOCKADDR_LEN
+    PRUint16 md_af = addr->raw.family;
+#endif
+
+    if (pt_TestAbort()) return bytes;
+
+    PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
+    addr_len = PR_NETADDR_SIZE(addr);
+#if defined(_PR_INET6)
+    if (addr->raw.family == PR_AF_INET6) {
+#ifdef _PR_HAVE_SOCKADDR_LEN
+        md_af = AF_INET6;
+#else
+        /* If _PR_INET6 is defined and it is PR_AF_INET6 we set family
+         * to AF_INET6. */
+        addrCopy = *addr;
+        addrCopy.raw.family = AF_INET6;
+        addrp = &addrCopy;
+#endif
+    }
+#endif
+
+#ifdef _PR_HAVE_SOCKADDR_LEN
+    /* if _PR_HAVE_SOCKADDR_LEN is defined and it is PR_AF_INET6 we set family
+     * to AF_INET6 and we set address length. */
+    addrCopy = *addr;
+    ((struct sockaddr*)&addrCopy)->sa_len = addr_len;
+    ((struct sockaddr*)&addrCopy)->sa_family = md_af;
+    addrp = &addrCopy;
+#endif
+
+#ifndef HAS_CONNECTX
+    bytes = sendto(
+        fd->secret->md.osfd, buf, amount, MSG_FASTOPEN,
+        (struct sockaddr*)addrp, addr_len);
+#else
+    sa_endpoints_t endpoints;
+    endpoints.sae_srcif = 0;
+    endpoints.sae_srcaddr = NULL;
+    endpoints.sae_srcaddrlen = 0;
+    endpoints.sae_dstaddr = (struct sockaddr *)addrp;
+    endpoints.sae_dstaddrlen = addr_len;
+    struct iovec iov[1];
+    iov[0].iov_base = buf;
+    iov[0].iov_len = amount;
+    PRInt32 rv = connectx(fd->secret->md.osfd, &endpoints, SAE_ASSOCID_ANY,
+                         CONNECT_DATA_IDEMPOTENT, iov, 1, &bytes, NULL);
+#endif
+    syserrno = errno;
+    if ( (bytes == -1) && (syserrno == EWOULDBLOCK || syserrno == EAGAIN)
+        && (!fd->secret->nonblocking) ) {
+        if (PR_INTERVAL_NO_WAIT == timeout) syserrno = ETIMEDOUT;
+        else fNeedContinue = PR_TRUE;
+    }
+    if (fNeedContinue == PR_TRUE) {
+        pt_Continuation op;
+        op.arg1.osfd = fd->secret->md.osfd;
+        op.arg2.buffer = (void*)buf;
+        op.arg3.amount = amount;
+        op.arg4.flags = flags;
+        op.arg5.addr = (PRNetAddr*)addrp;
+        op.timeout = timeout;
+        op.result.code = 0;  /* initialize the number sent */
+        op.function = pt_sendto_cont;
+        op.event = POLLOUT | POLLPRI;
+        bytes = pt_Continue(&op);
+        syserrno = op.syserrno;
+    }
+    if (bytes < 0) {
+        pt_MapError(_PR_MD_MAP_SENDTO_ERROR, syserrno);
+    }
+    return bytes;
+#else /* !HAS_CONNECTX */
+    PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
+    return -1;
+#endif
+}  /* pt_TCP_SendTo */
+#endif /* LINUX || DARWIN */
+
 static PRInt32 pt_RecvFrom(PRFileDesc *fd, void *buf, PRInt32 amount,
     PRIntn flags, PRNetAddr *addr, PRIntervalTime timeout)
 {
@@ -2767,22 +2874,21 @@ static PRStatus pt_GetSockName(PRFileDesc *fd, PRNetAddr *addr)
     if (rv == -1) {
         pt_MapError(_PR_MD_MAP_GETSOCKNAME_ERROR, errno);
         return PR_FAILURE;
-    } else {
+    }
 #ifdef _PR_HAVE_SOCKADDR_LEN
-        /* ignore the sa_len field of struct sockaddr */
-        if (addr)
-        {
-            addr->raw.family = ((struct sockaddr*)addr)->sa_family;
-        }
+    /* ignore the sa_len field of struct sockaddr */
+    if (addr)
+    {
+        addr->raw.family = ((struct sockaddr*)addr)->sa_family;
+    }
 #endif /* _PR_HAVE_SOCKADDR_LEN */
 #ifdef _PR_INET6
-		if (AF_INET6 == addr->raw.family)
-			addr->raw.family = PR_AF_INET6;
+    if (AF_INET6 == addr->raw.family)
+        addr->raw.family = PR_AF_INET6;
 #endif
-        PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
-        PR_ASSERT(IsValidNetAddrLen(addr, addr_len) == PR_TRUE);
-        return PR_SUCCESS;
-    }
+    PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
+    PR_ASSERT(IsValidNetAddrLen(addr, addr_len) == PR_TRUE);
+    return PR_SUCCESS;
 }  /* pt_GetSockName */
 
 static PRStatus pt_GetPeerName(PRFileDesc *fd, PRNetAddr *addr)
@@ -2798,22 +2904,21 @@ static PRStatus pt_GetPeerName(PRFileDesc *fd, PRNetAddr *addr)
     if (rv == -1) {
         pt_MapError(_PR_MD_MAP_GETPEERNAME_ERROR, errno);
         return PR_FAILURE;
-    } else {
+    }
 #ifdef _PR_HAVE_SOCKADDR_LEN
-        /* ignore the sa_len field of struct sockaddr */
-        if (addr)
-        {
-            addr->raw.family = ((struct sockaddr*)addr)->sa_family;
-        }
+    /* ignore the sa_len field of struct sockaddr */
+    if (addr)
+    {
+        addr->raw.family = ((struct sockaddr*)addr)->sa_family;
+    }
 #endif /* _PR_HAVE_SOCKADDR_LEN */
 #ifdef _PR_INET6
-		if (AF_INET6 == addr->raw.family)
-        	addr->raw.family = PR_AF_INET6;
+    if (AF_INET6 == addr->raw.family)
+        addr->raw.family = PR_AF_INET6;
 #endif
-        PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
-        PR_ASSERT(IsValidNetAddrLen(addr, addr_len) == PR_TRUE);
-        return PR_SUCCESS;
-    }
+    PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
+    PR_ASSERT(IsValidNetAddrLen(addr, addr_len) == PR_TRUE);
+    return PR_SUCCESS;
 }  /* pt_GetPeerName */
 
 static PRStatus pt_GetSocketOption(PRFileDesc *fd, PRSocketOptionData *data)
@@ -3155,7 +3260,11 @@ static PRIOMethods _pr_tcp_methods = {
     pt_Recv,
     pt_Send,
     (PRRecvfromFN)_PR_InvalidInt,
+#if defined(LINUX) || defined(DARWIN)
+    pt_TCP_SendTo, /* This is for TCP Fast Open. Linux uses SendTo function for this. OSX uses connectx, but we imitate Linux. */
+#else
     (PRSendtoFN)_PR_InvalidInt,
+#endif
     pt_Poll,
     pt_AcceptRead,
     pt_TransmitFile,
@@ -3602,8 +3711,8 @@ PR_IMPLEMENT(PRStatus) PR_Delete(const char *name)
     if (rv == -1) {
         pt_MapError(_PR_MD_MAP_UNLINK_ERROR, errno);
         return PR_FAILURE;
-    } else
-        return PR_SUCCESS;
+    }
+    return PR_SUCCESS;
 }  /* PR_Delete */
 
 PR_IMPLEMENT(PRStatus) PR_Access(const char *name, PRAccessHow how)
@@ -3727,11 +3836,10 @@ PR_IMPLEMENT(PRStatus) PR_RmDir(const char *name)
 
     rv = rmdir(name);
     if (0 == rv) {
-    return PR_SUCCESS;
-    } else {
+        return PR_SUCCESS;
+    }
     pt_MapError(_PR_MD_MAP_RMDIR_ERROR, errno);
     return PR_FAILURE;
-    }
 }  /* PR_Rmdir */
 
 
@@ -3847,7 +3955,8 @@ static PRInt32 _pr_poll_with_poll(
                     /* now locate the NSPR layer at the bottom of the stack */
                     PRFileDesc *bottom = PR_GetIdentitiesLayer(
                         pds[index].fd, PR_NSPR_IO_LAYER);
-                    PR_ASSERT(NULL != bottom);  /* what to do about that? */
+                    /* ignore a socket without PR_NSPR_IO_LAYER available */
+
                     pds[index].out_flags = 0;  /* pre-condition */
                     if ((NULL != bottom)
                     && (_PR_FILEDESC_OPEN == bottom->secret->state))
@@ -4105,7 +4214,8 @@ static PRInt32 _pr_poll_with_select(
                     /* now locate the NSPR layer at the bottom of the stack */
                     PRFileDesc *bottom = PR_GetIdentitiesLayer(
                         pds[index].fd, PR_NSPR_IO_LAYER);
-                    PR_ASSERT(NULL != bottom);  /* what to do about that? */
+                    /* ignore a socket without PR_NSPR_IO_LAYER available */
+
                     pds[index].out_flags = 0;  /* pre-condition */
                     if ((NULL != bottom)
                     && (_PR_FILEDESC_OPEN == bottom->secret->state))
diff --git a/nsprpub/pr/src/pthreads/ptsynch.c b/nsprpub/pr/src/pthreads/ptsynch.c
index 8663a4c719..251205336b 100644
--- a/nsprpub/pr/src/pthreads/ptsynch.c
+++ b/nsprpub/pr/src/pthreads/ptsynch.c
@@ -55,12 +55,11 @@ void _PR_InitLocks(void)
     rv = _PT_PTHREAD_MUTEXATTR_INIT(&_pt_mattr); 
     PR_ASSERT(0 == rv);
 
-#ifdef LINUX
-#if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
+#if (defined(LINUX) && (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)) || \
+    (defined(FREEBSD) && __FreeBSD_version > 700055)
     rv = pthread_mutexattr_settype(&_pt_mattr, PTHREAD_MUTEX_ADAPTIVE_NP);
     PR_ASSERT(0 == rv);
 #endif
-#endif
 
     rv = _PT_PTHREAD_CONDATTR_INIT(&_pt_cvar_attr);
     PR_ASSERT(0 == rv);
diff --git a/nsprpub/pr/tests/accept.c b/nsprpub/pr/tests/accept.c
index 7ed2d98595..b327eb2114 100644
--- a/nsprpub/pr/tests/accept.c
+++ b/nsprpub/pr/tests/accept.c
@@ -143,12 +143,13 @@ ClientThread(void *_action)
             if (action != CLIENT_TIMEOUT_SEND) {
                 if ((rv = PR_Send(sock, buf, CLIENT_DATA,
                     0, timeoutTime))< 0) {
-                    if (!debug_mode)
+                    if (!debug_mode) {
                         failed_already=1;
-                    else    
-                        PR_fprintf(output, 
+                    } else {
+                        PR_fprintf(output,
                             "client: unable to send to server (%d, %ld, %ld)\n",
                             CLIENT_DATA, rv, PR_GetError());
+                    }
                 	goto ErrorExit;
                 }
             } else {
@@ -200,8 +201,9 @@ int i;
                 continue;
         }
         failed_already=1;
-        if (debug_mode)
+        if (debug_mode) {
         	PR_fprintf(output,"accept: ERROR - PR_Bind failed\n");
+        }
 		return;
     }
 
diff --git a/nsprpub/pr/tests/alarm.c b/nsprpub/pr/tests/alarm.c
index b7b1958016..e3dedb67fc 100644
--- a/nsprpub/pr/tests/alarm.c
+++ b/nsprpub/pr/tests/alarm.c
@@ -411,15 +411,15 @@ static PRUint32 TimeThis(
     PRUint32 overhead, usecs;
     PRIntervalTime predicted, timein, timeout, ticks;
 
- if (debug_mode)
-    printf("Testing %s ...", msg);
+    if (debug_mode)
+      printf("Testing %s ...", msg);
 
     timein = PR_IntervalNow();
     predicted = func(loops);
     timeout = PR_IntervalNow();
 
-  if (debug_mode)
-    printf(" done\n");
+    if (debug_mode)
+      printf(" done\n");
 
     ticks = timeout - timein;
     usecs = PR_IntervalToMicroseconds(ticks);
@@ -491,17 +491,17 @@ int prmain(int argc, char** argv)
 
     for (cpu = 1; cpu <= cpus; ++cpu)
     {
-    if (debug_mode)
+      if (debug_mode)
         printf("\nAlarm: Using %d CPU(s)\n", cpu);
 
-	PR_SetConcurrency(cpu);
-        
-        /* some basic time test */
-        (void)TimeThis("ConditionNotify", ConditionNotify, loops);
-        (void)TimeThis("ConditionTimeout", ConditionTimeout, loops);
-        (void)TimeThis("Alarms1", Alarms1, loops);
-        (void)TimeThis("Alarms2", Alarms2, loops);
-        (void)TimeThis("Alarms3", Alarms3, loops);
+      PR_SetConcurrency(cpu);
+
+      /* some basic time test */
+      (void)TimeThis("ConditionNotify", ConditionNotify, loops);
+      (void)TimeThis("ConditionTimeout", ConditionTimeout, loops);
+      (void)TimeThis("Alarms1", Alarms1, loops);
+      (void)TimeThis("Alarms2", Alarms2, loops);
+      (void)TimeThis("Alarms3", Alarms3, loops);
     }
     return 0;
 }
diff --git a/nsprpub/pr/tests/vercheck.c b/nsprpub/pr/tests/vercheck.c
index 6cb4eb2db5..6170125dea 100644
--- a/nsprpub/pr/tests/vercheck.c
+++ b/nsprpub/pr/tests/vercheck.c
@@ -39,7 +39,7 @@ static char *compatible_version[] = {
     "4.9.6",
     "4.10", "4.10.1", "4.10.2", "4.10.3", "4.10.4",
     "4.10.5", "4.10.6", "4.10.7", "4.10.8", "4.10.9",
-    "4.10.10", "4.11", "4.12", "4.13",
+    "4.10.10", "4.11", "4.12", "4.13", "4.14", "4.15"
     PR_VERSION
 };
 
@@ -55,8 +55,8 @@ static char *incompatible_version[] = {
     "3.0", "3.0.1",
     "3.1", "3.1.1", "3.1.2", "3.1.3",
     "3.5", "3.5.1",
-    "4.13.2",
-    "4.14", "4.14.1",
+    "4.16.1",
+    "4.17", "4.17.1",
     "10.0", "11.1", "12.14.20"
 };