Upgrade libuv to 8fd916d6ddc9c7fd0e3e8e668efbc2d782e8e742

deps/uv/AUTHORS

@@ -8,3 +8,4 @@ Vanilla Hsu <vanilla@fatpipi.com>
 Ben Noordhuis <info@bnoordhuis.nl>
 Henry Rawas <henryr@schakra.com>
 Robert Mustacchi <rm@joyent.com>
+Matt Stevens <matt@alloysoft.com>

deps/uv/msvs/libuv-test.vcxproj

@@ -148,6 +148,7 @@
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>
     </ClCompile>
     <ClCompile Include="..\test\test-async.c" />
+    <ClCompile Include="..\test\test-bind6-error.c" />
     <ClCompile Include="..\test\test-delayed-accept.c" />
     <ClCompile Include="..\test\test-callback-stack.c" />
     <ClCompile Include="..\test\test-connection-fail.c" />

deps/uv/test/benchmark-sizes.c

@@ -31,7 +31,5 @@ BENCHMARK_IMPL(sizes) {
   LOGF("uv_idle_t: %u bytes\n", (unsigned int) sizeof(uv_idle_t));
   LOGF("uv_async_t: %u bytes\n", (unsigned int) sizeof(uv_async_t));
   LOGF("uv_timer_t: %u bytes\n", (unsigned int) sizeof(uv_timer_t));
-  LOGF("uv_ares_task_t: %u bytes\n", (unsigned int) sizeof(uv_ares_task_t));
-  LOGF("uv_ares_action_t: %u bytes\n", (unsigned int) sizeof(uv_ares_action_t));
   return 0;
 }

deps/uv/test/test-bind6-error.c

@@ -0,0 +1,164 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "../uv.h"
+#include "task.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+
+static int close_cb_called = 0;
+
+
+static void close_cb(uv_handle_t* handle) {
+  ASSERT(handle != NULL);
+  close_cb_called++;
+}
+
+
+TEST_IMPL(bind6_error_addrinuse) {
+  struct sockaddr_in6 addr = uv_ip6_addr("::", TEST_PORT);
+  uv_tcp_t server1, server2;
+  int r;
+
+  uv_init();
+
+  r = uv_tcp_init(&server1);
+  ASSERT(r == 0);
+  r = uv_bind6(&server1, addr);
+  ASSERT(r == 0);
+
+  r = uv_tcp_init(&server2);
+  ASSERT(r == 0);
+  r = uv_bind6(&server2, addr);
+  ASSERT(r == 0);
+
+  r = uv_listen(&server1, 128, NULL);
+  ASSERT(r == 0);
+  r = uv_listen(&server2, 128, NULL);
+  ASSERT(r == -1);
+
+  ASSERT(uv_last_error().code == UV_EADDRINUSE);
+
+  uv_close((uv_handle_t*)&server1, close_cb);
+  uv_close((uv_handle_t*)&server2, close_cb);
+
+  uv_run();
+
+  ASSERT(close_cb_called == 2);
+
+  return 0;
+}
+
+
+TEST_IMPL(bind6_error_addrnotavail) {
+  struct sockaddr_in6 addr = uv_ip6_addr("4:4:4:4:4:4:4:4", TEST_PORT);
+  uv_tcp_t server;
+  int r;
+
+  uv_init();
+
+  r = uv_tcp_init(&server);
+  ASSERT(r == 0);
+  r = uv_bind6(&server, addr);
+  ASSERT(r == -1);
+  ASSERT(uv_last_error().code == UV_EADDRNOTAVAIL);
+
+  uv_close((uv_handle_t*)&server, close_cb);
+
+  uv_run();
+
+  ASSERT(close_cb_called == 1);
+
+  return 0;
+}
+
+
+TEST_IMPL(bind6_error_fault) {
+  char garbage[] = "blah blah blah blah blah blah blah blah blah blah blah blah";
+  struct sockaddr_in6* garbage_addr;
+  uv_tcp_t server;
+  int r;
+
+  garbage_addr = (struct sockaddr_in6*) &garbage;
+
+  uv_init();
+
+  r = uv_tcp_init(&server);
+  ASSERT(r == 0);
+  r = uv_bind6(&server, *garbage_addr);
+  ASSERT(r == -1);
+
+  ASSERT(uv_last_error().code == UV_EFAULT);
+
+  uv_close((uv_handle_t*)&server, close_cb);
+
+  uv_run();
+
+  ASSERT(close_cb_called == 1);
+
+  return 0;
+}
+
+/* Notes: On Linux uv_bind6(server, NULL) will segfault the program.  */
+
+TEST_IMPL(bind6_error_inval) {
+  struct sockaddr_in6 addr1 = uv_ip6_addr("::", TEST_PORT);
+  struct sockaddr_in6 addr2 = uv_ip6_addr("::", TEST_PORT_2);
+  uv_tcp_t server;
+  int r;
+
+  uv_init();
+
+  r = uv_tcp_init(&server);
+  ASSERT(r == 0);
+  r = uv_bind6(&server, addr1);
+  ASSERT(r == 0);
+  r = uv_bind6(&server, addr2);
+  ASSERT(r == -1);
+
+  ASSERT(uv_last_error().code == UV_EINVAL);
+
+  uv_close((uv_handle_t*)&server, close_cb);
+
+  uv_run();
+
+  ASSERT(close_cb_called == 1);
+
+  return 0;
+}
+
+
+TEST_IMPL(bind6_localhost_ok) {
+  struct sockaddr_in6 addr = uv_ip6_addr("::1", TEST_PORT);
+
+  uv_tcp_t server;
+  int r;
+
+  uv_init();
+
+  r = uv_tcp_init(&server);
+  ASSERT(r == 0);
+  r = uv_bind6(&server, addr);
+  ASSERT(r == 0);
+
+  return 0;
+}

deps/uv/test/test-get-currentexe.c

@@ -33,20 +33,20 @@ TEST_IMPL(get_currentexe) {
   int r;
 
   size = sizeof(buffer) / sizeof(buffer[0]);
-  r = uv_get_exepath(buffer, &size);
+  r = uv_exepath(buffer, &size);
   ASSERT(!r);
 
   match = strstr(buffer, executable_path);
-  /* Verify that the path returned from uv_get_exepath is a subdirectory of executable_path */
+  /* Verify that the path returned from uv_exepath is a subdirectory of executable_path */
   ASSERT(match && !strcmp(match, executable_path));
   ASSERT(size == strlen(buffer));
 
   /* Negative tests */
   size = sizeof(buffer) / sizeof(buffer[0]);
-  r = uv_get_exepath(NULL, &size);
+  r = uv_exepath(NULL, &size);
   ASSERT(r == -1);
 
-  r = uv_get_exepath(buffer, NULL);
+  r = uv_exepath(buffer, NULL);
   ASSERT(r == -1);
 
   return 0;

deps/uv/test/test-gethostbyname.c

@@ -35,41 +35,35 @@ int bynamecallbacksig;
 int ares_byaddrcallbacks;
 int byaddrcallbacksig;
 
-static uv_buf_t alloc_cb(uv_handle_t* handle, size_t size) {
-  uv_buf_t buf;
-  buf.base = (char*)malloc(size);
-  buf.len = size;
-  return buf;
-}
-
 static void aresbynamecallback( void *arg,
                           int status,
                           int timeouts,
                           struct hostent *hostent) {
-    int * iargs;
-    ASSERT(arg != NULL);
-    iargs = (int*)arg;
-    ASSERT(*iargs == bynamecallbacksig);
-    ASSERT(timeouts == 0);
+  int * iargs;
+  ASSERT(arg != NULL);
+  iargs = (int*)arg;
+  ASSERT(*iargs == bynamecallbacksig);
+  ASSERT(timeouts == 0);
 
-    ares_bynamecallbacks++;
+  printf("aresbynamecallback %d\n", ares_bynamecallbacks++);
 }
 
+
 static void aresbyaddrcallback( void *arg,
                           int status,
                           int timeouts,
                           struct hostent *hostent) {
-    int * iargs;
-    ASSERT(arg != NULL);
-    iargs = (int*)arg;
-    ASSERT(*iargs == byaddrcallbacksig);
-    ASSERT(timeouts == 0);
+  int * iargs;
+  ASSERT(arg != NULL);
+  iargs = (int*)arg;
+  ASSERT(*iargs == byaddrcallbacksig);
+  ASSERT(timeouts == 0);
 
-    ares_byaddrcallbacks++;
+  printf("aresbyaddrcallback %d\n", ares_byaddrcallbacks++);
 }
 
-static void prep_tcploopback()
-{
+
+static void prep_tcploopback() {
   /* for test, use echo server - TCP port TEST_PORT on loopback */
   struct sockaddr_in test_server = uv_ip4_addr("127.0.0.1", 0);
   int rc;
@@ -97,7 +91,7 @@ TEST_IMPL(gethostbyname) {
     return 1;
   }
 
-  uv_init(alloc_cb);
+  uv_init();
 
   printf("Start basic gethostbyname test\n");
   prep_tcploopback();

deps/uv/test/test-hrtime.c

@@ -23,6 +23,16 @@
 #include "task.h"
 
 
+#ifndef MICROSEC
+# define MICROSEC 1000000
+#endif
+
+#ifndef NANOSEC
+# define NANOSEC 1000000000
+#endif
+
+
+
 /*
  * We expect the amount of time passed to be at least one us plus two system
  * calls. Therefore checking that at least a microsecond has elapsed is safe.
@@ -30,9 +40,9 @@
 TEST_IMPL(hrtime) {
   uint64_t a, b, diff;
 
-  a = uv_get_hrtime();
+  a = uv_hrtime();
   uv_sleep(1);
-  b = uv_get_hrtime();
+  b = uv_hrtime();
 
   diff = b - a;
 

deps/uv/test/test-list.h

@@ -28,6 +28,11 @@ TEST_DECLARE   (bind_error_addrnotavail_2)
 TEST_DECLARE   (bind_error_fault)
 TEST_DECLARE   (bind_error_inval)
 TEST_DECLARE   (bind_localhost_ok)
+TEST_DECLARE   (bind6_error_addrinuse)
+TEST_DECLARE   (bind6_error_addrnotavail)
+TEST_DECLARE   (bind6_error_fault)
+TEST_DECLARE   (bind6_error_inval)
+TEST_DECLARE   (bind6_localhost_ok)
 TEST_DECLARE   (connection_fail)
 TEST_DECLARE   (connection_fail_doesnt_auto_close)
 TEST_DECLARE   (shutdown_eof)
@@ -61,17 +66,18 @@ TASK_LIST_START
   TEST_HELPER (tcp_writealot, echo_server)
 
   TEST_ENTRY  (bind_error_addrinuse)
-
   TEST_ENTRY  (bind_error_addrnotavail_1)
-
   TEST_ENTRY  (bind_error_addrnotavail_2)
-
   TEST_ENTRY  (bind_error_fault)
-
   TEST_ENTRY  (bind_error_inval)
-
   TEST_ENTRY  (bind_localhost_ok)
 
+  TEST_ENTRY  (bind6_error_addrinuse)
+  TEST_ENTRY  (bind6_error_addrnotavail)
+  TEST_ENTRY  (bind6_error_fault)
+  TEST_ENTRY  (bind6_error_inval)
+  TEST_ENTRY  (bind6_localhost_ok)
+
   TEST_ENTRY  (connection_fail)
   TEST_ENTRY  (connection_fail_doesnt_auto_close)
 

deps/uv/uv-common.c

@@ -20,11 +20,19 @@
  */
 
 #include "uv.h"
+#include "uv-common.h"
 
 #include <assert.h>
 #include <stddef.h> /* NULL */
 #include <string.h> /* memset */
 
+/* use inet_pton from c-ares if necessary */
+#include "ares_config.h"
+#include "c-ares/inet_net_pton.h"
+
+/* list used for ares task handles */
+static uv_ares_task_t* uv_ares_handles_ = NULL;
+
 
 static uv_counters_t counters;
 
@@ -89,3 +97,63 @@ struct sockaddr_in uv_ip4_addr(const char* ip, int port) {
 
   return addr;
 }
+
+
+struct sockaddr_in6 uv_ip6_addr(const char* ip, int port) {
+  struct sockaddr_in6 addr;
+
+  memset(&addr, 0, sizeof(struct sockaddr_in6));
+
+  addr.sin6_family = AF_INET6;
+  addr.sin6_port = htons(port);
+  ares_inet_pton(AF_INET6, ip, &addr.sin6_addr);
+
+  return addr;
+}
+
+
+/* find matching ares handle in list */
+void uv_add_ares_handle(uv_ares_task_t* handle) {
+  handle->ares_next = uv_ares_handles_;
+  handle->ares_prev = NULL;
+
+  if (uv_ares_handles_) {
+    uv_ares_handles_->ares_prev = handle;
+  }
+  uv_ares_handles_ = handle;
+}
+
+/* find matching ares handle in list */
+/* TODO: faster lookup */
+uv_ares_task_t* uv_find_ares_handle(ares_socket_t sock) {
+  uv_ares_task_t* handle = uv_ares_handles_;
+  while (handle != NULL) {
+    if (handle->sock == sock) {
+      break;
+    }
+    handle = handle->ares_next;
+  }
+
+  return handle;
+}
+
+/* remove ares handle in list */
+void uv_remove_ares_handle(uv_ares_task_t* handle) {
+  if (handle == uv_ares_handles_) {
+    uv_ares_handles_ = handle->ares_next;
+  }
+
+  if (handle->ares_next) {
+    handle->ares_next->ares_prev = handle->ares_prev;
+  }
+
+  if (handle->ares_prev) {
+    handle->ares_prev->ares_next = handle->ares_next;
+  }
+}
+
+
+/* Returns 1 if the uv_ares_handles_ list is empty. 0 otherwise. */
+int uv_ares_handles_empty() {
+  return uv_ares_handles_ ? 0 : 1;
+}

deps/uv/uv-common.h

@@ -0,0 +1,51 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+/*
+ * This file is private to libuv. It provides common functionality to both
+ * Windows and Unix backends.
+ */
+
+#ifndef UV_COMMON_H_
+#define UV_COMMON_H_
+
+#include "uv.h"
+
+/*
+ * Subclass of uv_handle_t. Used for integration of c-ares.
+ */
+typedef struct uv_ares_task_s uv_ares_task_t;
+
+struct uv_ares_task_s {
+  UV_HANDLE_FIELDS
+  UV_ARES_TASK_PRIVATE_FIELDS
+  uv_ares_task_t* ares_prev;
+  uv_ares_task_t* ares_next;
+};
+
+
+void uv_remove_ares_handle(uv_ares_task_t* handle);
+uv_ares_task_t* uv_find_ares_handle(ares_socket_t sock);
+void uv_add_ares_handle(uv_ares_task_t* handle);
+int uv_ares_handles_empty();
+
+
+#endif /* UV_COMMON_H_ */

deps/uv/uv-darwin.c

@@ -26,7 +26,7 @@
 #include <mach/mach_time.h>
 
 
-uint64_t uv_get_hrtime() {
+uint64_t uv_hrtime() {
   uint64_t time;
   Nanoseconds enano;
   time = mach_absolute_time(); 
@@ -35,7 +35,7 @@ uint64_t uv_get_hrtime() {
 }
 
 
-int uv_get_exepath(char* buffer, size_t* size) {
+int uv_exepath(char* buffer, size_t* size) {
   uint32_t usize;
   int result;
   char* path;

deps/uv/uv-freebsd.c

@@ -21,7 +21,7 @@
 #include "uv.h"
 
 
-int uv_get_exepath(char* buffer, size_t* size) {
+int uv_exepath(char* buffer, size_t* size) {
   uint32_t usize;
   int result;
   char* path;

deps/uv/uv-linux.c

@@ -28,14 +28,14 @@
  * There's probably some way to get time from Linux than gettimeofday(). What
  * it is, I don't know.
  */
-uint64_t uv_get_hrtime() {
+uint64_t uv_hrtime() {
   struct timespec ts;
   clock_gettime(CLOCK_MONOTONIC, &ts);
   return (ts.tv_sec * NANOSEC + ts.tv_nsec);
 }
 
 
-int uv_get_exepath(char* buffer, size_t* size) {
+int uv_exepath(char* buffer, size_t* size) {
   uint32_t usize;
   int result;
   char* path;

deps/uv/uv-sunos.c

@@ -27,7 +27,7 @@
 #include <sys/time.h>
 
 
-uint64_t uv_get_hrtime() {
+uint64_t uv_hrtime() {
   return (gethrtime());
 }
 
@@ -37,7 +37,7 @@ uint64_t uv_get_hrtime() {
  * of the function, but this function could be called by multiple consumers and
  * we don't want to potentially create a race condition in the use of snprintf.
  */
-int uv_get_exepath(char* buffer, size_t* size) {
+int uv_exepath(char* buffer, size_t* size) {
   size_t res;
   pid_t pid;
   char buf[PATH_MAX];

deps/uv/uv-unix.c

@@ -19,6 +19,7 @@
  */
 
 #include "uv.h"
+#include "uv-common.h"
 
 #include <stddef.h> /* NULL */
 #include <stdio.h> /* printf */
@@ -44,6 +45,18 @@
 
 static uv_err_t last_err;
 
+struct uv_ares_data_s {
+  ares_channel channel;
+  /*
+   * While the channel is active this timer is called once per second to be sure
+   * that we're always calling ares_process. See the warning above the
+   * definition of ares_timeout().
+   */
+  ev_timer timer;
+};
+
+static struct uv_ares_data_s ares_data;
+
 
 void uv__tcp_io(EV_P_ ev_io* watcher, int revents);
 void uv__next(EV_P_ ev_idle* watcher, int revents);
@@ -67,6 +80,30 @@ void uv_flag_set(uv_handle_t* handle, int flag) {
 }
 
 
+/* TODO Share this code with Windows. */
+/* TODO Expose callback to user to handle fatal error like V8 does. */
+static void uv_fatal_error(const int errorno, const char* syscall) {
+  char* buf = NULL;
+  const char* errmsg;
+
+  if (buf) {
+    errmsg = buf;
+  } else {
+    errmsg = "Unknown error";
+  }
+
+  if (syscall) {
+    fprintf(stderr, "\nlibuv fatal error. %s: (%d) %s\n", syscall, errorno,
+        errmsg);
+  } else {
+    fprintf(stderr, "\nlibuv fatal error. (%d) %s\n", errorno, errmsg);
+  }
+
+  *((char*)NULL) = 0xff; /* Force debug break */
+  abort();
+}
+
+
 uv_err_t uv_last_error() {
   return last_err;
 }
@@ -235,13 +272,11 @@ int uv_tcp_init(uv_tcp_t* tcp) {
 }
 
 
-int uv_bind(uv_tcp_t* tcp, struct sockaddr_in addr) {
-  int addrsize = sizeof(struct sockaddr_in);
-  int domain = AF_INET;
+int uv__bind(uv_tcp_t* tcp, int domain, struct sockaddr* addr, int addrsize) {
   int r;
 
   if (tcp->fd <= 0) {
-    int fd = socket(AF_INET, SOCK_STREAM, 0);
+    int fd = socket(domain, SOCK_STREAM, 0);
 
     if (fd < 0) {
       uv_err_new((uv_handle_t*)tcp, errno);
@@ -256,12 +291,7 @@ int uv_bind(uv_tcp_t* tcp, struct sockaddr_in addr) {
 
   assert(tcp->fd >= 0);
 
-  if (addr.sin_family != AF_INET) {
-    uv_err_new((uv_handle_t*)tcp, EFAULT);
-    return -1;
-  }
-
-  r = bind(tcp->fd, (struct sockaddr*) &addr, addrsize);
+  r = bind(tcp->fd, addr, addrsize);
   tcp->delayed_error = 0;
 
   if (r) {
@@ -280,6 +310,26 @@ int uv_bind(uv_tcp_t* tcp, struct sockaddr_in addr) {
 }
 
 
+int uv_bind(uv_tcp_t* tcp, struct sockaddr_in addr) {
+  if (addr.sin_family != AF_INET) {
+    uv_err_new((uv_handle_t*)tcp, EFAULT);
+    return -1;
+  }
+
+  return uv__bind(tcp, AF_INET, (struct sockaddr*)&addr, sizeof(struct sockaddr_in));
+}
+
+
+int uv_bind6(uv_tcp_t* tcp, struct sockaddr_in6 addr) {
+  if (addr.sin6_family != AF_INET6) {
+    uv_err_new((uv_handle_t*)tcp, EFAULT);
+    return -1;
+  }
+
+  return uv__bind(tcp, AF_INET6, (struct sockaddr*)&addr, sizeof(struct sockaddr_in6));
+}
+
+
 int uv_tcp_open(uv_tcp_t* tcp, int fd) {
   int yes;
   int r;
@@ -313,8 +363,8 @@ int uv_tcp_open(uv_tcp_t* tcp, int fd) {
 
 void uv__server_io(EV_P_ ev_io* watcher, int revents) {
   int fd;
-  struct sockaddr addr;
-  socklen_t addrlen;
+  struct sockaddr_storage addr;
+  socklen_t addrlen = sizeof(struct sockaddr_storage);
   uv_tcp_t* tcp = watcher->data;
 
   assert(watcher == &tcp->read_watcher ||
@@ -330,7 +380,7 @@ void uv__server_io(EV_P_ ev_io* watcher, int revents) {
 
   while (1) {
     assert(tcp->accepted_fd < 0);
-    fd = accept(tcp->fd, &addr, &addrlen);
+    fd = accept(tcp->fd, (struct sockaddr*)&addr, &addrlen);
 
     if (fd < 0) {
       if (errno == EAGAIN) {
@@ -1290,17 +1340,145 @@ int64_t uv_timer_get_repeat(uv_timer_t* timer) {
   return (int64_t)(1000 * timer->timer_watcher.repeat);
 }
 
+
+/*
+ * This is called once per second by ares_data.timer. It is used to 
+ * constantly callback into c-ares for possibly processing timeouts.
+ */
+static void uv__ares_timeout(EV_P_ struct ev_timer* watcher, int revents) {
+  assert(watcher == &ares_data.timer);
+  assert(revents == EV_TIMER);
+  assert(!uv_ares_handles_empty());
+  ares_process_fd(ares_data.channel, ARES_SOCKET_BAD, ARES_SOCKET_BAD);
+}
+
+
+static void uv__ares_io(EV_P_ struct ev_io* watcher, int revents) {
+  /* Reset the idle timer */
+  ev_timer_again(EV_A_ &ares_data.timer);
+
+  /* Process DNS responses */
+  ares_process_fd(ares_data.channel,
+      revents & EV_READ ? watcher->fd : ARES_SOCKET_BAD,
+      revents & EV_WRITE ? watcher->fd : ARES_SOCKET_BAD);
+}
+
+
+/* Allocates and returns a new uv_ares_task_t */
+static uv_ares_task_t* uv__ares_task_create(int fd) {
+  uv_ares_task_t* h = malloc(sizeof(uv_ares_task_t));
+
+  if (h == NULL) {
+    uv_fatal_error(ENOMEM, "malloc");
+  }
+
+  h->sock = fd;
+
+  ev_io_init(&h->read_watcher, uv__ares_io, fd, EV_READ);
+  ev_io_init(&h->write_watcher, uv__ares_io, fd, EV_WRITE);
+
+  h->read_watcher.data = h;
+  h->write_watcher.data = h;
+}
+
+
+/* Callback from ares when socket operation is started */
+static void uv__ares_sockstate_cb(void* data, ares_socket_t sock,
+    int read, int write) {
+  uv_ares_task_t* h = uv_find_ares_handle(sock);
+
+  if (read || write) {
+    if (!h) {
+      /* New socket */
+
+      /* If this is the first socket then start the timer. */
+      if (!ev_is_active(&ares_data.timer)) {
+        assert(uv_ares_handles_empty());
+        ev_timer_again(EV_DEFAULT_UC_ &ares_data.timer);
+      }
+
+      h = uv__ares_task_create(sock);
+      uv_add_ares_handle(h);
+    }
+
+    if (read) {
+      ev_io_start(EV_DEFAULT_UC_ &h->read_watcher);
+    } else {
+      ev_io_stop(EV_DEFAULT_UC_ &h->read_watcher);
+    }
+
+    if (write) {
+      ev_io_start(EV_DEFAULT_UC_ &h->write_watcher);
+    } else {
+      ev_io_stop(EV_DEFAULT_UC_ &h->write_watcher);
+    }
+
+  } else {
+    /*
+     * read == 0 and write == 0 this is c-ares's way of notifying us that
+     * the socket is now closed. We must free the data associated with
+     * socket.
+     */
+    assert(h && "When an ares socket is closed we should have a handle for it");
+
+    ev_io_stop(EV_DEFAULT_UC_ &h->read_watcher);
+    ev_io_stop(EV_DEFAULT_UC_ &h->write_watcher);
+
+    uv_remove_ares_handle(h);
+    free(h);
+
+    if (uv_ares_handles_empty()) {
+      ev_timer_stop(EV_DEFAULT_UC_ &ares_data.timer);
+    }
+  }
+}
+
+
 /* c-ares integration initialize and terminate */
+/* TODO: share this with windows? */
 int uv_ares_init_options(ares_channel *channelptr,
-                        struct ares_options *options,
-                        int optmask) {
-  int r;
-  r = ares_init_options(channelptr, options, optmask);
-  return r;
+                         struct ares_options *options,
+                         int optmask) {
+  int rc;
+
+  /* only allow single init at a time */
+  if (ares_data.channel != NULL) {
+    uv_err_new_artificial(NULL, UV_EALREADY);
+    return -1;
+  }
+
+  /* set our callback as an option */
+  options->sock_state_cb = uv__ares_sockstate_cb;
+  options->sock_state_cb_data = &ares_data;
+  optmask |= ARES_OPT_SOCK_STATE_CB;
+
+  /* We do the call to ares_init_option for caller. */
+  rc = ares_init_options(channelptr, options, optmask);
+
+  /* if success, save channel */
+  if (rc == ARES_SUCCESS) {
+    ares_data.channel = *channelptr;
+  }
+
+  /*
+   * Initialize the timeout timer. The timer won't be started until the
+   * first socket is opened.
+   */
+  ev_init(&ares_data.timer, uv__ares_timeout);
+  ares_data.timer.repeat = 1.0;
+
+  return rc;
 }
 
+
+/* TODO share this with windows? */
 void uv_ares_destroy(ares_channel channel) {
-  ares_destroy(channel);
+  /* only allow destroy if did init */
+  if (ares_data.channel != NULL) {
+    ev_timer_stop(EV_DEFAULT_UC_ &ares_data.timer);
+    ares_destroy(channel);
+    ares_data.channel = NULL;
+  }
 }
 
 

deps/uv/uv-unix.h

@@ -102,7 +102,10 @@ typedef struct {
 
 #define UV_ARES_ACTION_PRIVATE_FIELDS /* TODO */
 
-#define UV_ARES_TASK_PRIVATE_FIELDS  /* TODO */
+#define UV_ARES_TASK_PRIVATE_FIELDS \
+  int sock; \
+  ev_io read_watcher; \
+  ev_io write_watcher;
 
 #define UV_GETADDRINFO_PRIVATE_FIELDS /* TODO */
 

deps/uv/uv-win.c

@@ -26,6 +26,7 @@
 #include <stdio.h>
 
 #include "uv.h"
+#include "uv-common.h"
 #include "tree.h"
 
 /*
@@ -213,12 +214,22 @@ static struct sockaddr_in uv_addr_ip4_any_;
 static char uv_zero_[] = "";
 
 
+/*
+ * Subclass of uv_handle_t. Used for integration of c-ares.
+ */
+typedef struct uv_ares_action_s uv_ares_action_t;
+
+struct uv_ares_action_s {
+  UV_HANDLE_FIELDS
+  struct uv_req_s ares_req;
+  SOCKET sock;
+  int read;
+  int write;
+};
+
 void uv_ares_process(uv_ares_action_t* handle, uv_req_t* req);
 void uv_ares_task_cleanup(uv_ares_task_t* handle, uv_req_t* req);
 
-/* list used for ares task handles */
-static uv_ares_task_t* uv_ares_handles_ = NULL;
-
 /* memory used per ares_channel */
 struct uv_ares_channel_s {
   ares_channel channel;
@@ -748,19 +759,13 @@ int uv_close(uv_handle_t* handle, uv_close_cb close_cb) {
 }
 
 
-int uv_bind(uv_tcp_t* handle, struct sockaddr_in addr) {
+int uv__bind(uv_tcp_t* handle, int domain, struct sockaddr* addr, int addrsize) {
   DWORD err;
   int r;
   SOCKET sock;
-  int addrsize = sizeof(struct sockaddr_in);
-
-  if (addr.sin_family != AF_INET) {
-    uv_set_sys_error(WSAEFAULT);
-    return -1;
-  }
 
   if (handle->socket == INVALID_SOCKET) {
-    sock = socket(AF_INET, SOCK_STREAM, 0);
+    sock = socket(domain, SOCK_STREAM, 0);
     if (sock == INVALID_SOCKET) {
       uv_set_sys_error(WSAGetLastError());
       return -1;
@@ -772,7 +777,7 @@ int uv_bind(uv_tcp_t* handle, struct sockaddr_in addr) {
     }
   }
 
-  r = bind(handle->socket, (struct sockaddr*) &addr, addrsize);
+  r = bind(handle->socket, addr, addrsize);
 
   if (r == SOCKET_ERROR) {
     err = WSAGetLastError();
@@ -792,6 +797,26 @@ int uv_bind(uv_tcp_t* handle, struct sockaddr_in addr) {
 }
 
 
+int uv_bind(uv_tcp_t* handle, struct sockaddr_in addr) {
+  if (addr.sin_family != AF_INET) {
+    uv_set_sys_error(WSAEFAULT);
+    return -1;
+  }
+
+  return uv__bind(handle, AF_INET, (struct sockaddr*)&addr, sizeof(struct sockaddr_in));
+}
+
+
+int uv_bind6(uv_tcp_t* handle, struct sockaddr_in6 addr) {
+  if (addr.sin6_family != AF_INET6) {
+    uv_set_sys_error(WSAEFAULT);
+    return -1;
+  }
+
+  return uv__bind(handle, AF_INET6, (struct sockaddr*)&addr, sizeof(struct sockaddr_in6));
+}
+
+
 static void uv_queue_accept(uv_tcp_t* handle) {
   uv_req_t* req;
   BOOL success;
@@ -1732,7 +1757,7 @@ int uv_utf8_to_utf16(const char* utf8Buffer, wchar_t* utf16Buffer, size_t utf16S
 }
 
 
-int uv_get_exepath(char* buffer, size_t* size) {
+int uv_exepath(char* buffer, size_t* size) {
   int retVal;
   size_t utf16Size;
   wchar_t* utf16Buffer;
@@ -1777,49 +1802,10 @@ done:
 }
 
 
-uint64_t uv_get_hrtime(void) {
+uint64_t uv_hrtime(void) {
   assert(0 && "implement me");
 }
 
-/* find matching ares handle in list */
-void uv_add_ares_handle(uv_ares_task_t* handle) {
-  handle->ares_next = uv_ares_handles_;
-  handle->ares_prev = NULL;
-
-  if (uv_ares_handles_) {
-    uv_ares_handles_->ares_prev = handle;
-  }
-  uv_ares_handles_ = handle;
-}
-
-/* find matching ares handle in list */
-/* TODO: faster lookup */
-uv_ares_task_t* uv_find_ares_handle(ares_socket_t sock) {
-  uv_ares_task_t* handle = uv_ares_handles_;
-  while (handle != NULL) {
-    if (handle->sock == sock) {
-      break;
-    }
-    handle = handle->ares_next;
-  }
-
-  return handle;
-}
-
-/* remove ares handle in list */
-void uv_remove_ares_handle(uv_ares_task_t* handle) {
-  if (handle == uv_ares_handles_) {
-    uv_ares_handles_ = handle->ares_next;
-  }
-
-  if (handle->ares_next) {
-    handle->ares_next->ares_prev = handle->ares_prev;
-  }
-
-  if (handle->ares_prev) {
-    handle->ares_prev->ares_next = handle->ares_next;
-  }
-}
 
 /* thread pool callback when socket is signalled */
 VOID CALLBACK uv_ares_socksignal_tp(void* parameter, BOOLEAN timerfired) {

deps/uv/uv-win.h

@@ -107,15 +107,8 @@ typedef struct uv_buf_t {
   unsigned int flags;                     \
   uv_err_t error;
 
-#define UV_ARES_ACTION_PRIVATE_FIELDS     \
-  struct uv_req_s ares_req;               \
-  SOCKET sock;                            \
-  int read;                               \
-  int write;
 
 #define UV_ARES_TASK_PRIVATE_FIELDS       \
-  uv_ares_task_t* ares_prev;              \
-  uv_ares_task_t* ares_next;              \
   struct uv_req_s ares_req;               \
   SOCKET sock;                            \
   HANDLE h_wait;                          \
@@ -132,6 +125,5 @@ typedef struct uv_buf_t {
   struct addrinfoW* res;                  \
   int retcode;
 
-
 int uv_utf16_to_utf8(wchar_t* utf16Buffer, size_t utf16Size, char* utf8Buffer, size_t utf8Size);
 int uv_utf8_to_utf16(const char* utf8Buffer, wchar_t* utf16Buffer, size_t utf16Size);

deps/uv/uv.h

@@ -48,10 +48,6 @@ typedef struct uv_check_s uv_check_t;
 typedef struct uv_idle_s uv_idle_t;
 typedef struct uv_req_s uv_req_t;
 typedef struct uv_async_s uv_async_t;
-/* TODO: make private */
-typedef struct uv_ares_task_s uv_ares_task_t;
-/* TODO: make private */
-typedef struct uv_ares_action_s uv_ares_action_t;
 typedef struct uv_getaddrinfo_s uv_getaddrinfo_t;
 
 
@@ -223,6 +219,7 @@ struct uv_tcp_s {
 int uv_tcp_init(uv_tcp_t* handle);
 
 int uv_bind(uv_tcp_t* handle, struct sockaddr_in);
+int uv_bind6(uv_tcp_t* handle, struct sockaddr_in6);
 
 int uv_connect(uv_req_t* req, struct sockaddr_in);
 
@@ -378,25 +375,6 @@ void uv_timer_set_repeat(uv_timer_t* timer, int64_t repeat);
 int64_t uv_timer_get_repeat(uv_timer_t* timer);
 
 
-/*
- * Subclass of uv_handle_t. Used for integration of c-ares.
- * TODO: make private
- */
-struct uv_ares_task_s {
-  UV_HANDLE_FIELDS
-  UV_ARES_TASK_PRIVATE_FIELDS
-};
-
-
-/*
- * Subclass of uv_handle_t. Used for integration of c-ares.
- * TODO: make private
- */
-struct uv_ares_action_s {
-  UV_HANDLE_FIELDS
-  UV_ARES_ACTION_PRIVATE_FIELDS
-};
-
 /* c-ares integration initialize and terminate */
 int uv_ares_init_options(ares_channel *channelptr,
                         struct ares_options *options,
@@ -453,9 +431,22 @@ int64_t uv_now();
 
 /* Utility */
 struct sockaddr_in uv_ip4_addr(const char* ip, int port);
+struct sockaddr_in6 uv_ip6_addr(const char* ip, int port);
 
 /* Gets the executable path */
-int uv_get_exepath(char* buffer, size_t* size);
+int uv_exepath(char* buffer, size_t* size);
+
+/*
+ * Returns the current high-resolution real time. This is expressed in
+ * nanoseconds. It is relative to an arbitrary time in the past. It is not
+ * related to the time of day and therefore not subject to clock drift. The
+ * primary use is for measuring performance between intervals.
+ *
+ * Note not every platform can support nanosecond resolution; however, this
+ * value will always be in nanoseconds.
+ */
+extern uint64_t uv_hrtime(void);
+
 
 /* the presence of this union forces similar struct layout */
 union uv_any_handle {
@@ -465,8 +456,6 @@ union uv_any_handle {
   uv_idle_t idle;
   uv_async_t async;
   uv_timer_t timer;
-  uv_ares_task_t arest;
-  uv_ares_action_t aresa;
   uv_getaddrinfo_t getaddrinfo;
 };
 
@@ -484,35 +473,6 @@ typedef struct {
 
 uv_counters_t* uv_counters();
 
-
-#ifndef SEC
-# define SEC 1
-#endif
-
-#ifndef MILLISEC
-# define MILLISEC 1000
-#endif
-
-#ifndef MICROSEC
-# define MICROSEC 1000000
-#endif
-
-#ifndef NANOSEC
-# define NANOSEC 1000000000
-#endif
-
-
-/*
- * Returns the current high-resolution real time. This is expressed in
- * nanoseconds. It is relative to an arbitrary time in the past. It is not
- * related to the time of day and therefore not subject to clock drift. The
- * primary use is for measuring performance between intervals.
- *
- * Note not every platform can support nanosecond resolution; however, this
- * value will always be in nanoseconds.
- */
-extern uint64_t uv_get_hrtime(void);
-
 #ifdef __cplusplus
 }
 #endif