http.h
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#include <iostream>
Persistent<Object> reqTemplate, resTemplate;
Persistent<Function> httpPersistent;
uWS::HttpRequest *currentReq = nullptr;
struct HttpServer {
struct Request {
static void on(const FunctionCallbackInfo<Value> &args) {
NativeString eventName(args[0]);
if (std::string(eventName.getData(), eventName.getLength()) == "data") {
args.Holder()->SetInternalField(1, args[1]);
} else if (std::string(eventName.getData(), eventName.getLength()) == "end") {
args.Holder()->SetInternalField(2, args[1]);
} else {
std::cout << "Warning: req.on(" << std::string(eventName.getData(), eventName.getLength()) << ") is not implemented!" << std::endl;
}
args.GetReturnValue().Set(args.Holder());
}
static void headers(Local<String> property, const PropertyCallbackInfo<Value> &args) {
uWS::HttpRequest *req = currentReq;
if (!req) {
std::cerr << "Warning: req.headers usage past request handler is not supported!" << std::endl;
} else {
NativeString nativeString(property);
uWS::Header header = req->getHeader(nativeString.getData(), nativeString.getLength());
if (header) {
args.GetReturnValue().Set(String::NewFromOneByte(args.GetIsolate(), (uint8_t *) header.value, String::kNormalString, header.valueLength));
}
}
}
static void url(Local<String> property, const PropertyCallbackInfo<Value> &args) {
args.GetReturnValue().Set(args.This()->GetInternalField(4));
}
static void method(Local<String> property, const PropertyCallbackInfo<Value> &args) {
//std::cout << "method" << std::endl;
long methodId = ((long) args.This()->GetAlignedPointerFromInternalField(3)) >> 1;
switch (methodId) {
case uWS::HttpMethod::METHOD_GET:
args.GetReturnValue().Set(String::NewFromOneByte(args.GetIsolate(), (uint8_t *) "GET", String::kNormalString, 3));
break;
case uWS::HttpMethod::METHOD_PUT:
args.GetReturnValue().Set(String::NewFromOneByte(args.GetIsolate(), (uint8_t *) "PUT", String::kNormalString, 3));
break;
case uWS::HttpMethod::METHOD_POST:
args.GetReturnValue().Set(String::NewFromOneByte(args.GetIsolate(), (uint8_t *) "POST", String::kNormalString, 4));
break;
case uWS::HttpMethod::METHOD_HEAD:
args.GetReturnValue().Set(String::NewFromOneByte(args.GetIsolate(), (uint8_t *) "HEAD", String::kNormalString, 4));
break;
case uWS::HttpMethod::METHOD_PATCH:
args.GetReturnValue().Set(String::NewFromOneByte(args.GetIsolate(), (uint8_t *) "PATCH", String::kNormalString, 5));
break;
case uWS::HttpMethod::METHOD_TRACE:
args.GetReturnValue().Set(String::NewFromOneByte(args.GetIsolate(), (uint8_t *) "TRACE", String::kNormalString, 5));
break;
case uWS::HttpMethod::METHOD_DELETE:
args.GetReturnValue().Set(String::NewFromOneByte(args.GetIsolate(), (uint8_t *) "DELETE", String::kNormalString, 6));
break;
case uWS::HttpMethod::METHOD_OPTIONS:
args.GetReturnValue().Set(String::NewFromOneByte(args.GetIsolate(), (uint8_t *) "OPTIONS", String::kNormalString, 7));
break;
case uWS::HttpMethod::METHOD_CONNECT:
args.GetReturnValue().Set(String::NewFromOneByte(args.GetIsolate(), (uint8_t *) "CONNECT", String::kNormalString, 7));
break;
}
}
// placeholders
static void unpipe(const FunctionCallbackInfo<Value> &args) {
//std::cout << "req.unpipe called" << std::endl;
}
static void resume(const FunctionCallbackInfo<Value> &args) {
//std::cout << "req.resume called" << std::endl;
}
static void socket(const FunctionCallbackInfo<Value> &args) {
// return new empty object
args.GetReturnValue().Set(Object::New(args.GetIsolate()));
}
static Local<Object> getTemplateObject(Isolate *isolate) {
Local<FunctionTemplate> reqTemplateLocal = FunctionTemplate::New(isolate);
reqTemplateLocal->SetClassName(String::NewFromUtf8(isolate, "uws.Request"));
reqTemplateLocal->InstanceTemplate()->SetInternalFieldCount(5);
reqTemplateLocal->PrototypeTemplate()->SetAccessor(String::NewFromUtf8(isolate, "url"), Request::url);
reqTemplateLocal->PrototypeTemplate()->SetAccessor(String::NewFromUtf8(isolate, "method"), Request::method);
reqTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "on"), FunctionTemplate::New(isolate, Request::on));
reqTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "unpipe"), FunctionTemplate::New(isolate, Request::unpipe));
reqTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "resume"), FunctionTemplate::New(isolate, Request::resume));
reqTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "socket"), FunctionTemplate::New(isolate, Request::socket));
Local<Object> reqObjectLocal = reqTemplateLocal->GetFunction()->NewInstance();
Local<ObjectTemplate> headersTemplate = ObjectTemplate::New(isolate);
headersTemplate->SetNamedPropertyHandler(Request::headers);
reqObjectLocal->Set(String::NewFromUtf8(isolate, "headers"), headersTemplate->NewInstance());
return reqObjectLocal;
}
};
struct Response {
static void on(const FunctionCallbackInfo<Value> &args) {
NativeString eventName(args[0]);
if (std::string(eventName.getData(), eventName.getLength()) == "close") {
args.Holder()->SetInternalField(1, args[1]);
} else {
std::cout << "Warning: res.on(" << std::string(eventName.getData(), eventName.getLength()) << ") is not implemented!" << std::endl;
}
args.GetReturnValue().Set(args.Holder());
}
static void end(const FunctionCallbackInfo<Value> &args) {
uWS::HttpResponse *res = (uWS::HttpResponse *) args.Holder()->GetAlignedPointerFromInternalField(0);
if (res) {
NativeString nativeString(args[0]);
((Persistent<Object> *) &res->userData)->Reset();
((Persistent<Object> *) &res->userData)->~Persistent<Object>();
((Persistent<Object> *) &res->extraUserData)->Reset();
((Persistent<Object> *) &res->extraUserData)->~Persistent<Object>();
res->end(nativeString.getData(), nativeString.getLength());
}
}
// todo: this is slow
static void writeHead(const FunctionCallbackInfo<Value> &args) {
uWS::HttpResponse *res = (uWS::HttpResponse *) args.Holder()->GetAlignedPointerFromInternalField(0);
if (res) {
std::string head = "HTTP/1.1 " + std::to_string(args[0]->IntegerValue()) + " ";
if (args.Length() > 1 && args[1]->IsString()) {
NativeString statusMessage(args[1]);
head.append(statusMessage.getData(), statusMessage.getLength());
} else {
head += "OK";
}
if (args[args.Length() - 1]->IsObject()) {
Local<Object> headersObject = args[args.Length() - 1]->ToObject();
Local<Array> headers = headersObject->GetOwnPropertyNames();
for (int i = 0; i < headers->Length(); i++) {
Local<Value> key = headers->Get(i);
Local<Value> value = headersObject->Get(key);
NativeString nativeKey(key);
NativeString nativeValue(value);
head += "\r\n";
head.append(nativeKey.getData(), nativeKey.getLength());
head += ": ";
head.append(nativeValue.getData(), nativeValue.getLength());
}
}
head += "\r\n\r\n";
res->write(head.data(), head.length());
}
}
// todo: if not writeHead called before then should write implicit headers
static void write(const FunctionCallbackInfo<Value> &args) {
uWS::HttpResponse *res = (uWS::HttpResponse *) args.Holder()->GetAlignedPointerFromInternalField(0);
if (res) {
NativeString nativeString(args[0]);
res->write(nativeString.getData(), nativeString.getLength());
}
}
static void setHeader(const FunctionCallbackInfo<Value> &args) {
//std::cout << "res.setHeader called" << std::endl;
}
static void getHeader(const FunctionCallbackInfo<Value> &args) {
//std::cout << "res.getHeader called" << std::endl;
}
static Local<Object> getTemplateObject(Isolate *isolate) {
Local<FunctionTemplate> resTemplateLocal = FunctionTemplate::New(isolate);
resTemplateLocal->SetClassName(String::NewFromUtf8(isolate, "uws.Response"));
resTemplateLocal->InstanceTemplate()->SetInternalFieldCount(5);
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "end"), FunctionTemplate::New(isolate, Response::end));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "writeHead"), FunctionTemplate::New(isolate, Response::writeHead));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "write"), FunctionTemplate::New(isolate, Response::write));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "on"), FunctionTemplate::New(isolate, Response::on));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "setHeader"), FunctionTemplate::New(isolate, Response::setHeader));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "getHeader"), FunctionTemplate::New(isolate, Response::getHeader));
return resTemplateLocal->GetFunction()->NewInstance();
}
};
// todo: wrap everything up - most important function to get correct
static void createServer(const FunctionCallbackInfo<Value> &args) {
// todo: delete this on destructor
uWS::Group<uWS::SERVER> *group = hub.createGroup<uWS::SERVER>();
group->setUserData(new GroupData);
GroupData *groupData = (GroupData *) group->getUserData();
Isolate *isolate = args.GetIsolate();
Persistent<Function> *httpRequestCallback = &groupData->httpRequestHandler;
httpRequestCallback->Reset(isolate, Local<Function>::Cast(args[0]));
group->onHttpRequest([isolate, httpRequestCallback](uWS::HttpResponse *res, uWS::HttpRequest req, char *data, size_t length, size_t remainingBytes) {
HandleScope hs(isolate);
currentReq = &req;
Local<Object> reqObject = Local<Object>::New(isolate, reqTemplate)->Clone();
reqObject->SetAlignedPointerInInternalField(0, &req);
new (&res->extraUserData) Persistent<Object>(isolate, reqObject);
Local<Object> resObject = Local<Object>::New(isolate, resTemplate)->Clone();
resObject->SetAlignedPointerInInternalField(0, res);
new (&res->userData) Persistent<Object>(isolate, resObject);
// store url & method (needed by Koa and Express)
long methodId = req.getMethod() << 1;
reqObject->SetAlignedPointerInInternalField(3, (void *) methodId);
reqObject->SetInternalField(4, String::NewFromOneByte(isolate, (uint8_t *) req.getUrl().value, String::kNormalString, req.getUrl().valueLength));
Local<Value> argv[] = {reqObject, resObject};
Local<Function>::New(isolate, *httpRequestCallback)->Call(isolate->GetCurrentContext()->Global(), 2, argv);
if (length) {
Local<Value> dataCallback = reqObject->GetInternalField(1);
if (!dataCallback->IsUndefined()) {
Local<Value> argv[] = {ArrayBuffer::New(isolate, data, length)};
Local<Function>::Cast(dataCallback)->Call(isolate->GetCurrentContext()->Global(), 1, argv);
}
if (!remainingBytes) {
Local<Value> endCallback = reqObject->GetInternalField(2);
if (!endCallback->IsUndefined()) {
Local<Function>::Cast(endCallback)->Call(isolate->GetCurrentContext()->Global(), 0, nullptr);
}
}
}
currentReq = nullptr;
reqObject->SetAlignedPointerInInternalField(0, nullptr);
});
group->onCancelledHttpRequest([isolate](uWS::HttpResponse *res) {
HandleScope hs(isolate);
// mark res as invalid
Local<Object> resObject = Local<Object>::New(isolate, *(Persistent<Object> *) &res->userData);
resObject->SetAlignedPointerInInternalField(0, nullptr);
// mark req as invalid
Local<Object> reqObject = Local<Object>::New(isolate, *(Persistent<Object> *) &res->extraUserData);
reqObject->SetAlignedPointerInInternalField(0, nullptr);
// emit res 'close' on aborted response
Local<Value> closeCallback = resObject->GetInternalField(1);
if (!closeCallback->IsUndefined()) {
Local<Function>::Cast(closeCallback)->Call(isolate->GetCurrentContext()->Global(), 0, nullptr);
}
((Persistent<Object> *) &res->userData)->Reset();
((Persistent<Object> *) &res->userData)->~Persistent<Object>();
((Persistent<Object> *) &res->extraUserData)->Reset();
((Persistent<Object> *) &res->extraUserData)->~Persistent<Object>();
});
group->onHttpData([isolate](uWS::HttpResponse *res, char *data, size_t length, size_t remainingBytes) {
Local<Object> reqObject = Local<Object>::New(isolate, *(Persistent<Object> *) res->extraUserData);
Local<Value> dataCallback = reqObject->GetInternalField(1);
if (!dataCallback->IsUndefined()) {
Local<Value> argv[] = {ArrayBuffer::New(isolate, data, length)};
Local<Function>::Cast(dataCallback)->Call(isolate->GetCurrentContext()->Global(), 1, argv);
}
if (!remainingBytes) {
Local<Value> endCallback = reqObject->GetInternalField(2);
if (!endCallback->IsUndefined()) {
Local<Function>::Cast(endCallback)->Call(isolate->GetCurrentContext()->Global(), 0, nullptr);
}
}
});
Local<Object> newInstance;
if (!args.IsConstructCall()) {
args.GetReturnValue().Set(newInstance = Local<Function>::New(args.GetIsolate(), httpPersistent)->NewInstance());
} else {
args.GetReturnValue().Set(newInstance = args.This());
}
newInstance->SetAlignedPointerInInternalField(0, group);
}
static void on(const FunctionCallbackInfo<Value> &args) {
NativeString eventName(args[0]);
std::cout << "Warning: server.on(" << std::string(eventName.getData(), eventName.getLength()) << ") is not implemented!" << std::endl;
}
static void listen(const FunctionCallbackInfo<Value> &args) {
uWS::Group<uWS::SERVER> *group = (uWS::Group<uWS::SERVER> *) args.Holder()->GetAlignedPointerFromInternalField(0);
std::cout << "listen: " << hub.listen(args[0]->IntegerValue(), nullptr, 0, group) << std::endl;
if (args[args.Length() - 1]->IsFunction()) {
Local<Function>::Cast(args[args.Length() - 1])->Call(args.GetIsolate()->GetCurrentContext()->Global(), 0, nullptr);
}
}
// var app = getExpressApp(express)
static void getExpressApp(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
if (args[0]->IsFunction()) {
Local<Function> express = Local<Function>::Cast(args[0]);
express->Get(String::NewFromUtf8(isolate, "request"))->ToObject()->SetPrototype(Local<Object>::New(args.GetIsolate(), reqTemplate)->GetPrototype());
express->Get(String::NewFromUtf8(isolate, "response"))->ToObject()->SetPrototype(Local<Object>::New(args.GetIsolate(), resTemplate)->GetPrototype());
// also change app.listen?
// change prototypes back?
args.GetReturnValue().Set(express->NewInstance());
}
}
static void getResponsePrototype(const FunctionCallbackInfo<Value> &args) {
args.GetReturnValue().Set(Local<Object>::New(args.GetIsolate(), resTemplate)->GetPrototype());
}
static void getRequestPrototype(const FunctionCallbackInfo<Value> &args) {
args.GetReturnValue().Set(Local<Object>::New(args.GetIsolate(), reqTemplate)->GetPrototype());
}
static Local<Function> getHttpServer(Isolate *isolate) {
Local<FunctionTemplate> httpServer = FunctionTemplate::New(isolate, HttpServer::createServer);
httpServer->InstanceTemplate()->SetInternalFieldCount(1);
httpServer->Set(String::NewFromUtf8(isolate, "createServer"), FunctionTemplate::New(isolate, HttpServer::createServer));
httpServer->Set(String::NewFromUtf8(isolate, "getExpressApp"), FunctionTemplate::New(isolate, HttpServer::getExpressApp));
httpServer->Set(String::NewFromUtf8(isolate, "getResponsePrototype"), FunctionTemplate::New(isolate, HttpServer::getResponsePrototype));
httpServer->Set(String::NewFromUtf8(isolate, "getRequestPrototype"), FunctionTemplate::New(isolate, HttpServer::getRequestPrototype));
httpServer->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "listen"), FunctionTemplate::New(isolate, HttpServer::listen));
httpServer->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "on"), FunctionTemplate::New(isolate, HttpServer::on));
reqTemplate.Reset(isolate, Request::getTemplateObject(isolate));
resTemplate.Reset(isolate, Response::getTemplateObject(isolate));
Local<Function> httpServerLocal = httpServer->GetFunction();
httpPersistent.Reset(isolate, httpServerLocal);
return httpServerLocal;
}
};