stream_wrap: Add support to write binary strings

node::StringBytes::Write() has appropriate support to write strings with
'binary' encoding. So expose that API through StreamWrap and allow
inheriting classes to use it.

Signed-off-by: Trevor Norris <trev.norris@gmail.com>

lib/net.js

@@ -684,6 +684,9 @@ Socket.prototype._write = function(data, encoding, cb) {
 
 function createWriteReq(req, handle, data, encoding) {
   switch (encoding) {
+    case 'binary':
+      return handle.writeBinaryString(req, data);
+
     case 'buffer':
       return handle.writeBuffer(req, data);
 

src/pipe_wrap.cc

@@ -104,6 +104,9 @@ void PipeWrap::Initialize(Handle<Object> target,
                             StreamWrap::WriteAsciiString);
   NODE_SET_PROTOTYPE_METHOD(t, "writeUtf8String", StreamWrap::WriteUtf8String);
   NODE_SET_PROTOTYPE_METHOD(t, "writeUcs2String", StreamWrap::WriteUcs2String);
+  NODE_SET_PROTOTYPE_METHOD(t,
+                            "writeBinaryString",
+                            StreamWrap::WriteBinaryString);
 
   NODE_SET_PROTOTYPE_METHOD(t, "bind", Bind);
   NODE_SET_PROTOTYPE_METHOD(t, "listen", Listen);

src/stream_wrap.cc

@@ -499,6 +499,10 @@ void StreamWrap::WriteUcs2String(const FunctionCallbackInfo<Value>& args) {
   WriteStringImpl<UCS2>(args);
 }
 
+void StreamWrap::WriteBinaryString(const FunctionCallbackInfo<Value>& args) {
+  WriteStringImpl<BINARY>(args);
+}
+
 void StreamWrap::SetBlocking(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args.GetIsolate());
   HandleScope scope(env->isolate());

src/stream_wrap.h

@@ -125,6 +125,8 @@ class StreamWrap : public HandleWrap {
   static void WriteAsciiString(const v8::FunctionCallbackInfo<v8::Value>& args);
   static void WriteUtf8String(const v8::FunctionCallbackInfo<v8::Value>& args);
   static void WriteUcs2String(const v8::FunctionCallbackInfo<v8::Value>& args);
+  static void WriteBinaryString(
+      const v8::FunctionCallbackInfo<v8::Value>& args);
 
   static void SetBlocking(const v8::FunctionCallbackInfo<v8::Value>& args);
 

src/tcp_wrap.cc

@@ -111,6 +111,9 @@ void TCPWrap::Initialize(Handle<Object> target,
                             StreamWrap::WriteAsciiString);
   NODE_SET_PROTOTYPE_METHOD(t, "writeUtf8String", StreamWrap::WriteUtf8String);
   NODE_SET_PROTOTYPE_METHOD(t, "writeUcs2String", StreamWrap::WriteUcs2String);
+  NODE_SET_PROTOTYPE_METHOD(t,
+                            "writeBinaryString",
+                            StreamWrap::WriteBinaryString);
   NODE_SET_PROTOTYPE_METHOD(t, "writev", StreamWrap::Writev);
 
   NODE_SET_PROTOTYPE_METHOD(t, "open", Open);

src/tty_wrap.cc

@@ -78,6 +78,9 @@ void TTYWrap::Initialize(Handle<Object> target,
                             StreamWrap::WriteAsciiString);
   NODE_SET_PROTOTYPE_METHOD(t, "writeUtf8String", StreamWrap::WriteUtf8String);
   NODE_SET_PROTOTYPE_METHOD(t, "writeUcs2String", StreamWrap::WriteUcs2String);
+  NODE_SET_PROTOTYPE_METHOD(t,
+                            "writeBinaryString",
+                            StreamWrap::WriteBinaryString);
 
   NODE_SET_PROTOTYPE_METHOD(t, "getWindowSize", TTYWrap::GetWindowSize);
   NODE_SET_PROTOTYPE_METHOD(t, "setRawMode", SetRawMode);