Add support for loading scripts from http

runtime/bin/socket_macos.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 #if defined(TARGET_OS_MACOS)
 
 #include <errno.h>  // NOLINT
 #include <stdio.h>  // NOLINT
 #include <stdlib.h>  // NOLINT
@@ skipping 24 matching lines @@
           addrinfo->ai_addrlen);
 }
 
 
 bool Socket::Initialize() {
   // Nothing to do on Mac OS.
   return true;
 }
 
 
-intptr_t Socket::CreateConnect(RawAddr addr, const intptr_t port) {
+intptr_t Socket::Create(RawAddr addr) {
   intptr_t fd;
 
   fd = TEMP_FAILURE_RETRY(socket(addr.ss.ss_family, SOCK_STREAM, 0));
   if (fd < 0) {
-    Log::PrintErr("Error CreateConnect: %s\n", strerror(errno));
+    Log::PrintErr("Error Create: %s\n", strerror(errno));
     return -1;
   }
 
   FDUtils::SetCloseOnExec(fd);
-  Socket::SetNonBlocking(fd);
+  return fd;
+}
 
+
+intptr_t Socket::Connect(intptr_t fd, RawAddr addr, const intptr_t port) {
   SocketAddress::SetAddrPort(&addr, port);
   intptr_t result = TEMP_FAILURE_RETRY(
       connect(fd,
               &addr.addr,
               SocketAddress::GetAddrLength(addr)));
   if (result == 0 || errno == EINPROGRESS) {
     return fd;
   }
   VOID_TEMP_FAILURE_RETRY(close(fd));
   return -1;
 }
 
 
+intptr_t Socket::CreateConnect(RawAddr addr, const intptr_t port) {
+  intptr_t fd = Socket::Create(addr);
+  if (fd < 0) {
+    return fd;
+  }
+
+  Socket::SetNonBlocking(fd);
+
+  return Socket::Connect(fd, addr, port);
+}
+
+
 intptr_t Socket::Available(intptr_t fd) {
   return FDUtils::AvailableBytes(fd);
 }
 
 
 int Socket::Read(intptr_t fd, void* buffer, intptr_t num_bytes) {
   ASSERT(fd >= 0);
   ssize_t read_bytes = TEMP_FAILURE_RETRY(read(fd, buffer, num_bytes));
   ASSERT(EAGAIN == EWOULDBLOCK);
   if (read_bytes == -1 && errno == EWOULDBLOCK) {
@@ skipping 213 matching lines @@
                                        IPPROTO_TCP,
                                        TCP_NODELAY,
                                        reinterpret_cast<char *>(&on),
                                        sizeof(on))) == 0;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_MACOS)