extract headers, status_code, path, http version from http messages.

still a work in progress.

src/http.cc

@@ -5,16 +5,73 @@
 #include <assert.h>
 #include <stdio.h>
 
+#define ON_MESSAGE_SYMBOL String::NewSymbol("onMessage")
+#define MESSAGE_HANDLER_SYMBOL String::NewSymbol("messageHandler")
+#define ON_HEADERS_COMPLETE_SYMBOL String::NewSymbol("onHeadersComplete")
+
+#define PATH_SYMBOL String::NewSymbol("path")
+#define STATUS_CODE_SYMBOL String::NewSymbol("status_code")
+#define HTTP_VERSION_SYMBOL String::NewSymbol("http_version")
+
 using namespace v8;
 using namespace node;
 using namespace std;
 
+
+// Helper Functions
+
+static Persistent<Function> _fill_field; 
+static Persistent<Function> _append_header_field; 
+static Persistent<Function> _append_header_value; 
+
+#define CATCH_NATIVE_HTTP_FUNCTION(variable, jsname)                         \
+do {                                                                         \
+  if (variable.IsEmpty()) {                                                  \
+    Local<Object> __g = Context::GetCurrent()->Global();                     \
+    Local<Value> __node_v = __g->Get(String::NewSymbol("node"));             \
+    Local<Object> __node = __node_v->ToObject();                             \
+    Local<Value> __http_v = __node->Get(String::NewSymbol("http"));          \
+    Local<Object> __http = __http_v->ToObject();                             \
+    Local<Value> __value = __http->Get(String::NewSymbol(jsname));           \
+    Handle<Function> __function_handle = Handle<Function>::Cast(__value);    \
+    variable = Persistent<Function>::New(__function_handle);                 \
+  }                                                                          \
+} while(0)
+
+void
+fillField (Handle<Value> message, Handle<Value> field, Handle<Value> value)
+{
+  HandleScope scope;
+  CATCH_NATIVE_HTTP_FUNCTION(_fill_field, "fillField");
+  Handle<Value> argv[] = { message, field, value };
+  _fill_field->Call(message->ToObject(), 3, argv);
+}
+
+void
+appendHeaderField (Handle<Value> message, Handle<Value> d)
+{
+  HandleScope scope;
+  CATCH_NATIVE_HTTP_FUNCTION(_append_header_field, "appendHeaderField");
+  Handle<Value> argv[] = { message, d };
+  _append_header_field->Call(message->ToObject(), 2, argv);
+}
+
+void
+appendHeaderValue (Handle<Value> message, Handle<Value> d)
+{
+  HandleScope scope;
+  CATCH_NATIVE_HTTP_FUNCTION(_append_header_value, "appendHeaderValue");
+  Handle<Value> argv[] = { message, d };
+  _append_header_value->Call(message->ToObject(), 2, argv);
+}
+
+
 void
-HTTPClient::Initialize (Handle<Object> target)
+HTTPConnection::Initialize (Handle<Object> target)
 {
   HandleScope scope;
 
-  Local<FunctionTemplate> t = FunctionTemplate::New(HTTPClient::v8New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(HTTPConnection::v8New);
   t->InstanceTemplate()->SetInternalFieldCount(1);
   target->Set(String::NewSymbol("HTTPClient"), t->GetFunction());
 
@@ -25,7 +82,7 @@ HTTPClient::Initialize (Handle<Object> target)
 }
 
 Handle<Value>
-HTTPClient::v8New (const Arguments& args)
+HTTPConnection::v8New (const Arguments& args)
 {
   HandleScope scope;
 
@@ -44,18 +101,121 @@ HTTPClient::v8New (const Arguments& args)
 
   Local<Object> protocol_instance = protocol->NewInstance(argc, argv);
 
-  new HTTPClient(args.This(), protocol_instance);
+  // changeme the type should come from javascript
+  new HTTPConnection(args.This(), protocol_instance, HTTP_RESPONSE);
 
   return args.This();
 }
 
 void
-HTTPClient::OnReceive (const void *buf, size_t len)
+HTTPConnection::OnReceive (const void *buf, size_t len)
 {
-  printf("http client got data!\n");
+  http_parser_execute(&parser_, static_cast<const char*>(buf), len);
+
+  if (http_parser_has_error(&parser_)) {
+    // do something.
+    Close();
+    return;
   }
+}
+
+int
+HTTPConnection::on_message_begin (http_parser *parser)
+{
+  HTTPConnection *connection = static_cast<HTTPConnection*> (parser->data);
+  HandleScope scope;
 
-HTTPClient::HTTPClient (Handle<Object> handle, Handle<Object> protocol) 
+  Local<Object> protocol = connection->GetProtocol();
+  Local<Value> on_message_v = protocol->Get(ON_MESSAGE_SYMBOL);
+  if (!on_message_v->IsFunction()) return -1;
+  Handle<Function> on_message = Handle<Function>::Cast(on_message_v);
+  Local<Object> message_handler = on_message->NewInstance();
+  connection->handle_->SetHiddenValue(MESSAGE_HANDLER_SYMBOL, message_handler);
+  return 0;
+}
+
+int
+HTTPConnection::on_path (http_parser *parser, const char *buf, size_t len)
+{
+  HTTPConnection *connection = static_cast<HTTPConnection*> (parser->data);
+
+  HandleScope scope;
+
+  Local<Value> message_handler_v = 
+    connection->handle_->GetHiddenValue(MESSAGE_HANDLER_SYMBOL);
+  fillField(message_handler_v, PATH_SYMBOL, String::New(buf, len));
+
+  return 0;
+}
+
+int
+HTTPConnection::on_header_field (http_parser *parser, const char *buf, size_t len)
+{
+  HTTPConnection *connection = static_cast<HTTPConnection*> (parser->data);
+  HandleScope scope;
+  Local<Value> message_handler_v = 
+    connection->handle_->GetHiddenValue(MESSAGE_HANDLER_SYMBOL);
+  appendHeaderField(message_handler_v, String::New(buf, len));
+  return 0;
+}
+
+int
+HTTPConnection::on_header_value (http_parser *parser, const char *buf, size_t len)
+{
+  HTTPConnection *connection = static_cast<HTTPConnection*> (parser->data);
+  HandleScope scope;
+  Local<Value> message_handler_v = 
+    connection->handle_->GetHiddenValue(MESSAGE_HANDLER_SYMBOL);
+  appendHeaderValue(message_handler_v, String::New(buf, len));
+  return 0;
+}
+
+int
+HTTPConnection::on_headers_complete (http_parser *parser)
+{
+  HTTPConnection *connection = static_cast<HTTPConnection*> (parser->data);
+
+  Local<Value> message_handler_v = 
+    connection->handle_->GetHiddenValue(MESSAGE_HANDLER_SYMBOL);
+  Local<Object> message_handler = message_handler_v->ToObject();
+
+  // STATUS 
+  message_handler->Set(STATUS_CODE_SYMBOL, 
+      Integer::New(connection->parser_.status_code));
+
+  // VERSION
+  char version[10];
+  snprintf(version, 10, "%d.%d", connection->parser_.version_major, connection->parser_.version_minor); 
+  message_handler->Set(HTTP_VERSION_SYMBOL, String::New(version));
+
+
+
+
+  Local<Value> on_headers_complete_v = message_handler->Get(ON_HEADERS_COMPLETE_SYMBOL);
+  if (on_headers_complete_v->IsFunction() == false) return 0;
+
+  Handle<Function> on_headers_complete = Handle<Function>::Cast(on_headers_complete_v);
+
+
+  on_headers_complete->Call(message_handler, 0, NULL);
+
+  return 0;
+}
+
+HTTPConnection::HTTPConnection (Handle<Object> handle, Handle<Object> protocol, enum http_parser_type type)
   : Connection(handle, protocol) 
 {
+  http_parser_init (&parser_, type);
+  parser_.on_message_begin    = on_message_begin;
+  parser_.on_path             = on_path;
+  parser_.on_query_string     = NULL;
+  parser_.on_uri              = NULL;
+  parser_.on_fragment         = NULL;
+  parser_.on_header_field     = on_header_field;
+  parser_.on_header_value     = on_header_value;
+  parser_.on_headers_complete = on_headers_complete;
+  parser_.on_body             = NULL;
+  parser_.on_message_complete = NULL;
+  parser_.data = this;
 }
+

src/http.h

@@ -3,19 +3,30 @@
 
 #include <v8.h>
 #include "net.h"
+#include <http_parser.h>
 
 namespace node {
 
-class HTTPClient : public node::Connection {
+class HTTPConnection : public Connection {
 public:
   static void Initialize (v8::Handle<v8::Object> target);
 
-  HTTPClient (v8::Handle<v8::Object> handle, v8::Handle<v8::Object> protocol);
+  HTTPConnection (v8::Handle<v8::Object> handle, 
+                  v8::Handle<v8::Object> protocol,
+                  enum http_parser_type type);
 
   static v8::Handle<v8::Value> v8New (const v8::Arguments& args);
 protected:
   void OnReceive (const void *buf, size_t len);
 
+  static int on_message_begin (http_parser *parser);
+  static int on_path (http_parser *parser, const char *at, size_t length);
+  static int on_header_field (http_parser *parser, const char *buf, size_t len);
+  static int on_header_value (http_parser *parser, const char *buf, size_t len);
+  static int on_headers_complete (http_parser *parser);
+
+
+  http_parser parser_;
 };
 
 } // namespace node

src/http.js

@@ -0,0 +1,25 @@
+node.http = {
+  fillField : function (msg, field, data) {
+    msg[field] = (msg[field] || "") + data;
+  },
+
+  appendHeaderField : function (msg, data) {
+    if (msg.hasOwnProperty("headers")) {
+      var last_pair = msg.headers[msg.headers.length-1];
+      if (last_pair.length == 1)
+        last_pair[0] += data;
+      else 
+        msg.headers.push([data]);
+    } else {
+      msg.headers = [[data]];
+    }
+  },
+
+  appendHeaderValue : function (msg, data) {
+    var last_pair = msg.headers[msg.headers.length-1];
+    if (last_pair.length == 1)
+      last_pair[1] = data;
+    else 
+      last_pair[1] += data;
+  }
+};

src/main.js

@@ -178,4 +178,3 @@ clearInterval = clearTimeout;
 
   loadScript(ARGV[1], this);
 })();
-

src/node.cc

@@ -56,9 +56,6 @@ ObjectWrap::MakeWeak (Persistent<Value> _, void *data)
   delete w;
 }
 
-
-
-
 // Extracts a C string from a V8 Utf8Value.
 const char*
 ToCString(const v8::String::Utf8Value& value)
@@ -252,11 +249,14 @@ main (int argc, char *argv[])
   Connection::Initialize(g);
   node::Init_timer(g);
   node::Init_file(g);
-  HTTPClient::Initialize(g);
+  HTTPConnection::Initialize(g);
 
   // NATIVE JAVASCRIPT MODULES
   TryCatch try_catch;
 
+  ExecuteString(String::New(native_http), String::New("http.js"));
+  if (try_catch.HasCaught()) goto native_js_error; 
+
   ExecuteString(String::New(native_file), String::New("file.js"));
   if (try_catch.HasCaught()) goto native_js_error; 
 

wscript

@@ -137,7 +137,7 @@ def build(bld):
     js2c.JS2C(source, targets)
 
   native_cc = bld.new_task_gen(
-    source="src/file.js src/main.js",
+    source="src/http.js src/file.js src/main.js",
     target="src/natives.h",
     rule=javascript_in_c,
     before="cxx"