src: simplify TCPWrap::Connect signature

Just a little piece of cleanup -- this aligns `TCPWrap::Connect`
with its sibling `TCPWrap::Bind`, deduplicates code and removes
an unnecessary heap allocation.

Signed-off-by: Anna Henningsen <anna@addaleax.net>
PR-URL: #62929
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Daeyeon Jeong <daeyeon.dev@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

Author: addaleax

src/tcp_wrap.cc

@@ -373,10 +373,11 @@ void TCPWrap::Open(const FunctionCallbackInfo<Value>& args) {
 }
 
 template <typename T>
-void TCPWrap::Bind(
-    const FunctionCallbackInfo<Value>& args,
-    int family,
-    std::function<int(const char* ip_address, int port, T* addr)> uv_ip_addr) {
+void TCPWrap::Bind(const FunctionCallbackInfo<Value>& args,
+                   int family,
+                   int (*uv_ip_addr)(const char* ip_address,
+                                     int port,
+                                     T* addr)) {
   TCPWrap* wrap;
   ASSIGN_OR_RETURN_UNWRAP(
       &wrap, args.This(), args.GetReturnValue().Set(UV_EBADF));
@@ -430,29 +431,18 @@ void TCPWrap::Listen(const FunctionCallbackInfo<Value>& args) {
 }
 
 void TCPWrap::Connect(const FunctionCallbackInfo<Value>& args) {
-  CHECK(args[2]->IsUint32());
-  // explicit cast to fit to libuv's type expectation
-  int port = static_cast<int>(args[2].As<Uint32>()->Value());
-  Connect<sockaddr_in>(args, [port](const char* ip_address, sockaddr_in* addr) {
-    return uv_ip4_addr(ip_address, port, addr);
-  });
+  Connect<sockaddr_in>(args, uv_ip4_addr);
 }
 
 void TCPWrap::Connect6(const FunctionCallbackInfo<Value>& args) {
-  Environment* env = Environment::GetCurrent(args);
-  CHECK(args[2]->IsUint32());
-  int port;
-  if (!args[2]->Int32Value(env->context()).To(&port)) return;
-  Connect<sockaddr_in6>(args,
-                        [port](const char* ip_address, sockaddr_in6* addr) {
-                          return uv_ip6_addr(ip_address, port, addr);
-                        });
+  Connect<sockaddr_in6>(args, uv_ip6_addr);
 }
 
 template <typename T>
-void TCPWrap::Connect(
-    const FunctionCallbackInfo<Value>& args,
-    std::function<int(const char* ip_address, T* addr)> uv_ip_addr) {
+void TCPWrap::Connect(const FunctionCallbackInfo<Value>& args,
+                      int (*uv_ip_addr)(const char* ip_address,
+                                        int port,
+                                        T* addr)) {
   Environment* env = Environment::GetCurrent(args);
 
   TCPWrap* wrap;
@@ -462,14 +452,17 @@ void TCPWrap::Connect(
   CHECK(args[0]->IsObject());
   CHECK(args[1]->IsString());
 
+  int port;
+  if (!args[2]->Int32Value(env->context()).To(&port)) return;
+
   Local<Object> req_wrap_obj = args[0].As<Object>();
   node::Utf8Value ip_address(env->isolate(), args[1]);
 
   ERR_ACCESS_DENIED_IF_INSUFFICIENT_PERMISSIONS(
       env, permission::PermissionScope::kNet, ip_address.ToStringView(), args);
 
   T addr;
-  int err = uv_ip_addr(*ip_address, &addr);
+  int err = uv_ip_addr(*ip_address, port, &addr);
 
   if (err == 0) {
     AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(wrap);

src/tcp_wrap.h

@@ -83,13 +83,16 @@ class TCPWrap : public ConnectionWrap<TCPWrap, uv_tcp_t> {
   static void Connect6(const v8::FunctionCallbackInfo<v8::Value>& args);
   template <typename T>
   static void Connect(const v8::FunctionCallbackInfo<v8::Value>& args,
-      std::function<int(const char* ip_address, T* addr)> uv_ip_addr);
+                      int (*uv_ip_addr)(const char* ip_address,
+                                        int port,
+                                        T* addr));
   static void Open(const v8::FunctionCallbackInfo<v8::Value>& args);
   template <typename T>
-  static void Bind(
-      const v8::FunctionCallbackInfo<v8::Value>& args,
-      int family,
-      std::function<int(const char* ip_address, int port, T* addr)> uv_ip_addr);
+  static void Bind(const v8::FunctionCallbackInfo<v8::Value>& args,
+                   int family,
+                   int (*uv_ip_addr)(const char* ip_address,
+                                     int port,
+                                     T* addr));
   static void Reset(const v8::FunctionCallbackInfo<v8::Value>& args);
   int Reset(v8::Local<v8::Value> close_callback = v8::Local<v8::Value>());