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tag: v0.5.3
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#include <node.h>
#include <node_buffer.h>
#include <req_wrap.h>
#include <handle_wrap.h>
#include <stream_wrap.h>
// Temporary hack: libuv should provide uv_inet_pton and uv_inet_ntop.
#ifdef __MINGW32__
extern "C" {
# include <inet_net_pton.h>
# include <inet_ntop.h>
}
# define uv_inet_pton ares_inet_pton
# define uv_inet_ntop ares_inet_ntop
#else // __POSIX__
# include <arpa/inet.h>
# define uv_inet_pton inet_pton
# define uv_inet_ntop inet_ntop
#endif
#define UNWRAP \
assert(!args.Holder().IsEmpty()); \
assert(args.Holder()->InternalFieldCount() > 0); \
TCPWrap* wrap = \
static_cast<TCPWrap*>(args.Holder()->GetPointerFromInternalField(0)); \
if (!wrap) { \
SetErrno(UV_EBADF); \
return scope.Close(Integer::New(-1)); \
}
namespace node {
using v8::Object;
using v8::Handle;
using v8::Local;
using v8::Persistent;
using v8::Value;
using v8::HandleScope;
using v8::FunctionTemplate;
using v8::String;
using v8::Function;
using v8::TryCatch;
using v8::Context;
using v8::Arguments;
using v8::Integer;
Persistent<Function> tcpConstructor;
static Persistent<String> family_symbol;
static Persistent<String> address_symbol;
static Persistent<String> port_symbol;
typedef class ReqWrap<uv_connect_t> ConnectWrap;
class TCPWrap : public StreamWrap {
public:
static void Initialize(Handle<Object> target) {
HandleWrap::Initialize(target);
StreamWrap::Initialize(target);
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(New);
t->SetClassName(String::NewSymbol("TCP"));
t->InstanceTemplate()->SetInternalFieldCount(1);
NODE_SET_PROTOTYPE_METHOD(t, "close", HandleWrap::Close);
NODE_SET_PROTOTYPE_METHOD(t, "readStart", StreamWrap::ReadStart);
NODE_SET_PROTOTYPE_METHOD(t, "readStop", StreamWrap::ReadStop);
NODE_SET_PROTOTYPE_METHOD(t, "write", StreamWrap::Write);
NODE_SET_PROTOTYPE_METHOD(t, "shutdown", StreamWrap::Shutdown);
NODE_SET_PROTOTYPE_METHOD(t, "bind", Bind);
NODE_SET_PROTOTYPE_METHOD(t, "listen", Listen);
NODE_SET_PROTOTYPE_METHOD(t, "connect", Connect);
NODE_SET_PROTOTYPE_METHOD(t, "bind6", Bind6);
NODE_SET_PROTOTYPE_METHOD(t, "connect6", Connect6);
NODE_SET_PROTOTYPE_METHOD(t, "getsockname", GetSockName);
tcpConstructor = Persistent<Function>::New(t->GetFunction());
family_symbol = NODE_PSYMBOL("family");
address_symbol = NODE_PSYMBOL("address");
port_symbol = NODE_PSYMBOL("port");
target->Set(String::NewSymbol("TCP"), tcpConstructor);
}
private:
static Handle<Value> New(const Arguments& args) {
// This constructor should not be exposed to public javascript.
// Therefore we assert that we are not trying to call this as a
// normal function.
assert(args.IsConstructCall());
HandleScope scope;
TCPWrap* wrap = new TCPWrap(args.This());
assert(wrap);
return scope.Close(args.This());
}
TCPWrap(Handle<Object> object) : StreamWrap(object,
(uv_stream_t*) &handle_) {
int r = uv_tcp_init(&handle_);
assert(r == 0); // How do we proxy this error up to javascript?
// Suggestion: uv_tcp_init() returns void.
UpdateWriteQueueSize();
}
~TCPWrap() {
assert(object_.IsEmpty());
}
static Handle<Value> GetSockName(const Arguments& args) {
HandleScope scope;
struct sockaddr address;
int family;
int port;
char ip[INET6_ADDRSTRLEN];
UNWRAP
int namelen = sizeof(address);
int r = uv_getsockname(&wrap->handle_, &address, &namelen);
Local<Object> sockname = Object::New();
if (r != 0) {
SetErrno(uv_last_error().code);
} else {
family = address.sa_family;
if (family == AF_INET) {
struct sockaddr_in* addrin = (struct sockaddr_in*)&address;
uv_inet_ntop(AF_INET, &(addrin->sin_addr), ip, INET6_ADDRSTRLEN);
port = ntohs(addrin->sin_port);
} else if (family == AF_INET6) {
struct sockaddr_in6* addrin6 = (struct sockaddr_in6*)&address;
uv_inet_ntop(AF_INET6, &(addrin6->sin6_addr), ip, INET6_ADDRSTRLEN);
port = ntohs(addrin6->sin6_port);
}
sockname->Set(port_symbol, Integer::New(port));
sockname->Set(family_symbol, Integer::New(family));
sockname->Set(address_symbol, String::New(ip));
}
return scope.Close(sockname);
}
static Handle<Value> Bind(const Arguments& args) {
HandleScope scope;
UNWRAP
String::AsciiValue ip_address(args[0]->ToString());
int port = args[1]->Int32Value();
struct sockaddr_in address = uv_ip4_addr(*ip_address, port);
int r = uv_tcp_bind(&wrap->handle_, address);
// Error starting the tcp.
if (r) SetErrno(uv_last_error().code);
return scope.Close(Integer::New(r));
}
static Handle<Value> Bind6(const Arguments& args) {
HandleScope scope;
UNWRAP
String::AsciiValue ip6_address(args[0]->ToString());
int port = args[1]->Int32Value();
struct sockaddr_in6 address = uv_ip6_addr(*ip6_address, port);
int r = uv_tcp_bind6(&wrap->handle_, address);
// Error starting the tcp.
if (r) SetErrno(uv_last_error().code);
return scope.Close(Integer::New(r));
}
static Handle<Value> Listen(const Arguments& args) {
HandleScope scope;
UNWRAP
int backlog = args[0]->Int32Value();
int r = uv_listen((uv_stream_t*)&wrap->handle_, backlog, OnConnection);
// Error starting the tcp.
if (r) SetErrno(uv_last_error().code);
return scope.Close(Integer::New(r));
}
static void OnConnection(uv_stream_t* handle, int status) {
HandleScope scope;
TCPWrap* wrap = static_cast<TCPWrap*>(handle->data);
assert(&wrap->handle_ == (uv_tcp_t*)handle);
// We should not be getting this callback if someone as already called
// uv_close() on the handle.
assert(wrap->object_.IsEmpty() == false);
if (status != 0) {
// TODO Handle server error (set errno and call onconnection with NULL)
assert(0);
return;
}
// Instanciate the client javascript object and handle.
Local<Object> client_obj = tcpConstructor->NewInstance();
// Unwrap the client javascript object.
assert(client_obj->InternalFieldCount() > 0);
TCPWrap* client_wrap =
static_cast<TCPWrap*>(client_obj->GetPointerFromInternalField(0));
int r = uv_accept(handle, (uv_stream_t*)&client_wrap->handle_);
// uv_accept should always work.
assert(r == 0);
// Successful accept. Call the onconnection callback in JavaScript land.
Local<Value> argv[1] = { client_obj };
MakeCallback(wrap->object_, "onconnection", 1, argv);
}
static void AfterConnect(uv_connect_t* req, int status) {
ConnectWrap* req_wrap = (ConnectWrap*) req->data;
TCPWrap* wrap = (TCPWrap*) req->handle->data;
HandleScope scope;
// The wrap and request objects should still be there.
assert(req_wrap->object_.IsEmpty() == false);
assert(wrap->object_.IsEmpty() == false);
if (status) {
SetErrno(uv_last_error().code);
}
Local<Value> argv[3] = {
Integer::New(status),
Local<Value>::New(wrap->object_),
Local<Value>::New(req_wrap->object_)
};
MakeCallback(req_wrap->object_, "oncomplete", 3, argv);
delete req_wrap;
}
static Handle<Value> Connect(const Arguments& args) {
HandleScope scope;
UNWRAP
String::AsciiValue ip_address(args[0]->ToString());
int port = args[1]->Int32Value();
struct sockaddr_in address = uv_ip4_addr(*ip_address, port);
// I hate when people program C++ like it was C, and yet I do it too.
// I'm too lazy to come up with the perfect class hierarchy here. Let's
// just do some type munging.
ConnectWrap* req_wrap = new ConnectWrap();
int r = uv_tcp_connect(&req_wrap->req_, &wrap->handle_, address,
AfterConnect);
req_wrap->Dispatched();
if (r) {
SetErrno(uv_last_error().code);
delete req_wrap;
return scope.Close(v8::Null());
} else {
return scope.Close(req_wrap->object_);
}
}
static Handle<Value> Connect6(const Arguments& args) {
HandleScope scope;
UNWRAP
String::AsciiValue ip_address(args[0]->ToString());
int port = args[1]->Int32Value();
struct sockaddr_in6 address = uv_ip6_addr(*ip_address, port);
ConnectWrap* req_wrap = new ConnectWrap();
int r = uv_tcp_connect6(&req_wrap->req_, &wrap->handle_, address,
AfterConnect);
req_wrap->Dispatched();
if (r) {
SetErrno(uv_last_error().code);
delete req_wrap;
return scope.Close(v8::Null());
} else {
return scope.Close(req_wrap->object_);
}
}
uv_tcp_t handle_;
};
} // namespace node
NODE_MODULE(node_tcp_wrap, node::TCPWrap::Initialize);
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