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[v10.x-backport] src: extract common Bind method #28222

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[v10.x-backport] src: extract common Bind method #28222

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src: extract common Bind method 
`TCPWrap::Bind` and `TCPWrap::Bind6` share a large amount of
functionality, so a common `Bind` was extracted to remove duplication.

Backport-PR-URL: #28222
PR-URL: #22315
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Fedor Indutny <[email protected]>
Reviewed-By: Denys Otrishko <[email protected]>
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@maclover7 @BethGriggs
maclover7 authored and BethGriggs committed Jun 14, 2019
commit f6f25cfe023ace2c26db9ced5ea9aaec293632e1
39 changes: 19 additions & 20 deletions src/tcp_wrap.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -219,18 +219,28 @@ void TCPWrap::Open(const FunctionCallbackInfo<Value>& args) {
args.GetReturnValue().Set(err);
}


void TCPWrap::Bind(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) {
TCPWrap* wrap;
ASSIGN_OR_RETURN_UNWRAP(&wrap,
args.Holder(),
args.GetReturnValue().Set(UV_EBADF));
Environment* env = wrap->env();
node::Utf8Value ip_address(env->isolate(), args[0]);
int port;
unsigned int flags = 0;
if (!args[1]->Int32Value(env->context()).To(&port)) return;
sockaddr_in addr;
int err = uv_ip4_addr(*ip_address, port, &addr);
if (family == AF_INET6 &&
!args[2]->Uint32Value(env->context()).To(&flags)) {
return;
}

T addr;
int err = uv_ip_addr(*ip_address, port, &addr);

if (err == 0) {
err = uv_tcp_bind(&wrap->handle_,
reinterpret_cast<const sockaddr*>(&addr),
Expand All @@ -239,24 +249,13 @@ void TCPWrap::Bind(const FunctionCallbackInfo<Value>& args) {
args.GetReturnValue().Set(err);
}

void TCPWrap::Bind(const FunctionCallbackInfo<Value>& args) {
Bind<sockaddr_in>(args, AF_INET, uv_ip4_addr);
}


void TCPWrap::Bind6(const FunctionCallbackInfo<Value>& args) {
TCPWrap* wrap;
ASSIGN_OR_RETURN_UNWRAP(&wrap,
args.Holder(),
args.GetReturnValue().Set(UV_EBADF));
Environment* env = wrap->env();
node::Utf8Value ip6_address(env->isolate(), args[0]);
int port;
if (!args[1]->Int32Value(env->context()).To(&port)) return;
sockaddr_in6 addr;
int err = uv_ip6_addr(*ip6_address, port, &addr);
if (err == 0) {
err = uv_tcp_bind(&wrap->handle_,
reinterpret_cast<const sockaddr*>(&addr),
0);
}
args.GetReturnValue().Set(err);
Bind<sockaddr_in6>(args, AF_INET6, uv_ip6_addr);
}


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5 changes: 5 additions & 0 deletions src/tcp_wrap.h
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,11 @@ class TCPWrap : public ConnectionWrap<TCPWrap, uv_tcp_t> {
static void Connect(const v8::FunctionCallbackInfo<v8::Value>& args,
std::function<int(const char* ip_address, T* addr)> uv_ip_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);

#ifdef _WIN32
static void SetSimultaneousAccepts(
Expand Down