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test: have inspector test pick an open port
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This ensures that cctest can be ran concurrently with other instances of
cctest or while the node is ran with --inspect.

Ref: #10858
PR-URL: #10861
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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Eugene Ostroukhov committed Jan 19, 2017
1 parent 4990212 commit 295bd11
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Showing 3 changed files with 44 additions and 19 deletions.
19 changes: 19 additions & 0 deletions src/inspector_socket_server.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -137,6 +137,23 @@ void SendProtocolJson(InspectorSocket* socket) {
SendHttpResponse(socket, data);
}

int GetPort(uv_tcp_t* socket, int* out_port) {
sockaddr_storage addr;
int len = sizeof(addr);
int err = uv_tcp_getsockname(socket,
reinterpret_cast<struct sockaddr*>(&addr),
&len);
if (err != 0)
return err;
int port;
if (addr.ss_family == AF_INET6)
port = reinterpret_cast<const sockaddr_in6*>(&addr)->sin6_port;
else
port = reinterpret_cast<const sockaddr_in*>(&addr)->sin_port;
*out_port = ntohs(port);
return err;
}

} // namespace


Expand Down Expand Up @@ -339,6 +356,8 @@ bool InspectorSocketServer::Start(uv_loop_t* loop) {
uv_ip4_addr("0.0.0.0", port_, &addr);
int err = uv_tcp_bind(&server_,
reinterpret_cast<const struct sockaddr*>(&addr), 0);
if (err == 0)
err = GetPort(&server_, &port_);
if (err == 0) {
err = uv_listen(reinterpret_cast<uv_stream_t*>(&server_), 1,
SocketConnectedCallback);
Expand Down
5 changes: 4 additions & 1 deletion src/inspector_socket_server.h
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,9 @@ class InspectorSocketServer {
void Stop(ServerCallback callback);
void Send(int session_id, const std::string& message);
void TerminateConnections(ServerCallback callback);
int port() {
return port_;
}

private:
static bool HandshakeCallback(InspectorSocket* socket,
Expand All @@ -62,7 +65,7 @@ class InspectorSocketServer {

uv_loop_t* loop_;
SocketServerDelegate* const delegate_;
const int port_;
int port_;
std::string path_;
uv_tcp_t server_;
Closer* closer_;
Expand Down
39 changes: 21 additions & 18 deletions test/cctest/test_inspector_socket_server.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,6 @@
#include <algorithm>
#include <sstream>

static const int PORT = 9229;
static uv_loop_t loop;

static const char CLIENT_CLOSE_FRAME[] = "\x88\x80\x2D\x0E\x1E\xFA";
Expand Down Expand Up @@ -165,7 +164,7 @@ class SocketWrapper {
contents_.clear();
uv_tcp_init(loop_, &socket_);
sockaddr_in addr;
uv_ip4_addr(host.c_str(), PORT, &addr);
uv_ip4_addr(host.c_str(), port, &addr);
int err = uv_tcp_connect(&connect_, &socket_,
reinterpret_cast<const sockaddr*>(&addr),
Connected_);
Expand All @@ -183,7 +182,7 @@ class SocketWrapper {
contents_.clear();
uv_tcp_init(loop_, &socket_);
sockaddr_in addr;
uv_ip4_addr(host.c_str(), PORT, &addr);
uv_ip4_addr(host.c_str(), port, &addr);
int err = uv_tcp_connect(&connect_, &socket_,
reinterpret_cast<const sockaddr*>(&addr),
ConnectionMustFail_);
Expand Down Expand Up @@ -310,6 +309,10 @@ class ServerHolder {
return &server_;
}

int port() {
return server_.port();
}

static void CloseCallback(InspectorSocketServer* server) {
ServerHolder* holder = node::ContainerOf(&ServerHolder::server_, server);
holder->closed = true;
Expand Down Expand Up @@ -377,12 +380,12 @@ static const std::string WsHandshakeRequest(const std::string& target_id) {

TEST_F(InspectorSocketServerTest, InspectorSessions) {
TestInspectorServerDelegate delegate;
ServerHolder server(&delegate, PORT);
ServerHolder server(&delegate, 0);
ASSERT_TRUE(server->Start(&loop));

SocketWrapper well_behaved_socket(&loop);
// Regular connection
well_behaved_socket.Connect("0.0.0.0", PORT);
well_behaved_socket.Connect("0.0.0.0", server.port());
well_behaved_socket.Write(WsHandshakeRequest(MAIN_TARGET_ID));
well_behaved_socket.Expect(WS_HANDSHAKE_RESPONSE);

Expand All @@ -405,7 +408,7 @@ TEST_F(InspectorSocketServerTest, InspectorSessions) {

// Declined connection
SocketWrapper declined_target_socket(&loop);
declined_target_socket.Connect("127.0.0.1", PORT);
declined_target_socket.Connect("127.0.0.1", server.port());
declined_target_socket.Write(WsHandshakeRequest(UNCONNECTABLE_TARGET_ID));
declined_target_socket.Expect("HTTP/1.0 400 Bad Request");
declined_target_socket.ExpectEOF();
Expand All @@ -414,7 +417,7 @@ TEST_F(InspectorSocketServerTest, InspectorSessions) {

// Bogus target - start session callback should not even be invoked
SocketWrapper bogus_target_socket(&loop);
bogus_target_socket.Connect("127.0.0.1", PORT);
bogus_target_socket.Connect("127.0.0.1", server.port());
bogus_target_socket.Write(WsHandshakeRequest("bogus_target"));
bogus_target_socket.Expect("HTTP/1.0 400 Bad Request");
bogus_target_socket.ExpectEOF();
Expand All @@ -423,7 +426,7 @@ TEST_F(InspectorSocketServerTest, InspectorSessions) {

// Drop connection (no proper close frames)
SocketWrapper dropped_connection_socket(&loop);
dropped_connection_socket.Connect("127.0.0.1", PORT);
dropped_connection_socket.Connect("127.0.0.1", server.port());
dropped_connection_socket.Write(WsHandshakeRequest(MAIN_TARGET_ID));
dropped_connection_socket.Expect(WS_HANDSHAKE_RESPONSE);

Expand All @@ -437,7 +440,7 @@ TEST_F(InspectorSocketServerTest, InspectorSessions) {

// Reconnect regular connection
SocketWrapper stays_till_termination_socket(&loop);
stays_till_termination_socket.Connect("127.0.0.1", PORT);
stays_till_termination_socket.Connect("127.0.0.1", server.port());
stays_till_termination_socket.Write(WsHandshakeRequest(MAIN_TARGET_ID));
stays_till_termination_socket.Expect(WS_HANDSHAKE_RESPONSE);

Expand All @@ -464,7 +467,7 @@ TEST_F(InspectorSocketServerTest, InspectorSessions) {

TEST_F(InspectorSocketServerTest, ServerDoesNothing) {
TestInspectorServerDelegate delegate;
ServerHolder server(&delegate, PORT);
ServerHolder server(&delegate, 0);
ASSERT_TRUE(server->Start(&loop));

server->Stop(ServerHolder::CloseCallback);
Expand All @@ -474,14 +477,14 @@ TEST_F(InspectorSocketServerTest, ServerDoesNothing) {

TEST_F(InspectorSocketServerTest, ServerWithoutTargets) {
ServerDelegateNoTargets delegate;
ServerHolder server(&delegate, PORT);
ServerHolder server(&delegate, 0);
ASSERT_TRUE(server->Start(&loop));
TestHttpRequest(PORT, "/json/list", "[ ]");
TestHttpRequest(PORT, "/json", "[ ]");
TestHttpRequest(server.port(), "/json/list", "[ ]");
TestHttpRequest(server.port(), "/json", "[ ]");

// Declined connection
SocketWrapper socket(&loop);
socket.Connect("0.0.0.0", PORT);
socket.Connect("0.0.0.0", server.port());
socket.Write(WsHandshakeRequest(UNCONNECTABLE_TARGET_ID));
socket.Expect("HTTP/1.0 400 Bad Request");
socket.ExpectEOF();
Expand All @@ -492,9 +495,9 @@ TEST_F(InspectorSocketServerTest, ServerWithoutTargets) {

TEST_F(InspectorSocketServerTest, ServerCannotStart) {
ServerDelegateNoTargets delegate1, delegate2;
ServerHolder server1(&delegate1, PORT);
ServerHolder server1(&delegate1, 0);
ASSERT_TRUE(server1->Start(&loop));
ServerHolder server2(&delegate2, PORT);
ServerHolder server2(&delegate2, server1.port());
ASSERT_FALSE(server2->Start(&loop));
server1->Stop(ServerHolder::CloseCallback);
server1->TerminateConnections(ServerHolder::ConnectionsTerminated);
Expand All @@ -506,10 +509,10 @@ TEST_F(InspectorSocketServerTest, ServerCannotStart) {

TEST_F(InspectorSocketServerTest, StoppingServerDoesNotKillConnections) {
ServerDelegateNoTargets delegate;
ServerHolder server(&delegate, PORT);
ServerHolder server(&delegate, 0);
ASSERT_TRUE(server->Start(&loop));
SocketWrapper socket1(&loop);
socket1.Connect("0.0.0.0", PORT);
socket1.Connect("0.0.0.0", server.port());
socket1.TestHttpRequest("/json/list", "[ ]");
server->Stop(ServerHolder::CloseCallback);
SPIN_WHILE(!server.closed);
Expand Down

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