/**************************************************************************/
/* test_tcp_server.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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#include "tests/test_macros.h"
TEST_FORCE_LINK(test_tcp_server)
#include "core/config/project_settings.h"
#include "core/io/stream_peer_tcp.h"
#include "core/io/tcp_server.h"
#include "core/os/os.h"
#include <functional>
namespace TestTCPServer {
const int PORT = 12345;
const IPAddress LOCALHOST("127.0.0.1");
const uint32_t SLEEP_DURATION = 1000;
const uint64_t MAX_WAIT_USEC = 2000000;
void wait_for_condition(std::function<bool()> f_test) {
const uint64_t time = OS::get_singleton()->get_ticks_usec();
while (!f_test() && (OS::get_singleton()->get_ticks_usec() - time) < MAX_WAIT_USEC) {
OS::get_singleton()->delay_usec(SLEEP_DURATION);
}
}
Ref<TCPServer> create_server(const IPAddress &p_address, int p_port) {
Ref<TCPServer> server;
server.instantiate();
REQUIRE_EQ(server->listen(PORT, LOCALHOST), Error::OK);
REQUIRE(server->is_listening());
CHECK_FALSE(server->is_connection_available());
return server;
}
Ref<StreamPeerTCP> create_client(const IPAddress &p_address, int p_port) {
Ref<StreamPeerTCP> client;
client.instantiate();
REQUIRE_EQ(client->connect_to_host(LOCALHOST, PORT), Error::OK);
CHECK_EQ(client->get_connected_host(), LOCALHOST);
CHECK_EQ(client->get_connected_port(), PORT);
CHECK_EQ(client->get_status(), StreamPeerTCP::STATUS_CONNECTING);
return client;
}
Ref<StreamPeerTCP> accept_connection(Ref<TCPServer> &p_server) {
wait_for_condition([&]() {
return p_server->is_connection_available();
});
REQUIRE(p_server->is_connection_available());
Ref<StreamPeerTCP> client_from_server = p_server->take_connection();
REQUIRE(client_from_server.is_valid());
CHECK_EQ(client_from_server->get_connected_host(), LOCALHOST);
CHECK_EQ(client_from_server->get_status(), StreamPeerTCP::STATUS_CONNECTED);
return client_from_server;
}
TEST_CASE("[TCPServer] Instantiation") {
Ref<TCPServer> server;
server.instantiate();
REQUIRE(server.is_valid());
CHECK_EQ(false, server->is_listening());
}
TEST_CASE("[TCPServer] Accept a connection and receive/send data") {
Ref<TCPServer> server = create_server(LOCALHOST, PORT);
Ref<StreamPeerTCP> client = create_client(LOCALHOST, PORT);
Ref<StreamPeerTCP> client_from_server = accept_connection(server);
wait_for_condition([&]() {
return client->poll() != Error::OK || client->get_status() == StreamPeerTCP::STATUS_CONNECTED;
});
CHECK_EQ(client->get_status(), StreamPeerTCP::STATUS_CONNECTED);
// Sending data from client to server.
const String hello_world = "Hello World!";
client->put_string(hello_world);
CHECK_EQ(client_from_server->get_string(), hello_world);
// Sending data from server to client.
const float pi = 3.1415;
client_from_server->put_float(pi);
CHECK_EQ(client->get_float(), pi);
client->disconnect_from_host();
server->stop();
CHECK_FALSE(server->is_listening());
}
TEST_CASE("[TCPServer] Handle multiple clients at the same time") {
Ref<TCPServer> server = create_server(LOCALHOST, PORT);
Vector<Ref<StreamPeerTCP>> clients;
for (int i = 0; i < 5; i++) {
clients.push_back(create_client(LOCALHOST, PORT));
}
Vector<Ref<StreamPeerTCP>> clients_from_server;
for (int i = 0; i < clients.size(); i++) {
clients_from_server.push_back(accept_connection(server));
}
wait_for_condition([&]() {
bool should_exit = true;
for (Ref<StreamPeerTCP> &c : clients) {
if (c->poll() != Error::OK) {
return true;
}
StreamPeerTCP::Status status = c->get_status();
if (status != StreamPeerTCP::STATUS_CONNECTED && status != StreamPeerTCP::STATUS_CONNECTING) {
return true;
}
if (status != StreamPeerTCP::STATUS_CONNECTED) {
should_exit = false;
}
}
return should_exit;
});
for (Ref<StreamPeerTCP> &c : clients) {
REQUIRE_EQ(c->get_status(), StreamPeerTCP::STATUS_CONNECTED);
}
// Sending data from each client to server.
for (int i = 0; i < clients.size(); i++) {
String hello_client = "Hello " + itos(i);
clients[i]->put_string(hello_client);
CHECK_EQ(clients_from_server[i]->get_string(), hello_client);
}
for (Ref<StreamPeerTCP> &c : clients) {
c->disconnect_from_host();
}
server->stop();
}
TEST_CASE("[TCPServer] When stopped shouldn't accept new connections") {
Ref<TCPServer> server = create_server(LOCALHOST, PORT);
Ref<StreamPeerTCP> client = create_client(LOCALHOST, PORT);
Ref<StreamPeerTCP> client_from_server = accept_connection(server);
wait_for_condition([&]() {
return client->poll() != Error::OK || client->get_status() == StreamPeerTCP::STATUS_CONNECTED;
});
CHECK_EQ(client->get_status(), StreamPeerTCP::STATUS_CONNECTED);
// Sending data from client to server.
const String hello_world = "Hello World!";
client->put_string(hello_world);
CHECK_EQ(client_from_server->get_string(), hello_world);
client->disconnect_from_host();
server->stop();
CHECK_FALSE(server->is_listening());
// Make sure the client times out in less than the wait time.
int timeout = ProjectSettings::get_singleton()->get_setting("network/limits/tcp/connect_timeout_seconds");
ProjectSettings::get_singleton()->set_setting("network/limits/tcp/connect_timeout_seconds", 1);
Ref<StreamPeerTCP> new_client = create_client(LOCALHOST, PORT);
// Reset the timeout setting.
ProjectSettings::get_singleton()->set_setting("network/limits/tcp/connect_timeout_seconds", timeout);
CHECK_FALSE(server->is_connection_available());
wait_for_condition([&]() {
return new_client->poll() != Error::OK || new_client->get_status() == StreamPeerTCP::STATUS_ERROR;
});
CHECK_FALSE(server->is_connection_available());
CHECK_EQ(new_client->get_status(), StreamPeerTCP::STATUS_ERROR);
new_client->disconnect_from_host();
CHECK_EQ(new_client->get_status(), StreamPeerTCP::STATUS_NONE);
}
TEST_CASE("[TCPServer] Should disconnect client") {
Ref<TCPServer> server = create_server(LOCALHOST, PORT);
Ref<StreamPeerTCP> client = create_client(LOCALHOST, PORT);
Ref<StreamPeerTCP> client_from_server = accept_connection(server);
wait_for_condition([&]() {
return client->poll() != Error::OK || client->get_status() == StreamPeerTCP::STATUS_CONNECTED;
});
CHECK_EQ(client->get_status(), StreamPeerTCP::STATUS_CONNECTED);
// Sending data from client to server.
const String hello_world = "Hello World!";
client->put_string(hello_world);
CHECK_EQ(client_from_server->get_string(), hello_world);
client_from_server->disconnect_from_host();
server->stop();
CHECK_FALSE(server->is_listening());
// Wait for disconnection
wait_for_condition([&]() {
return client->poll() != Error::OK || client->get_status() == StreamPeerTCP::STATUS_NONE;
});
// Wait for disconnection
wait_for_condition([&]() {
return client_from_server->poll() != Error::OK || client_from_server->get_status() == StreamPeerTCP::STATUS_NONE;
});
CHECK_EQ(client->get_status(), StreamPeerTCP::STATUS_NONE);
CHECK_EQ(client_from_server->get_status(), StreamPeerTCP::STATUS_NONE);
ERR_PRINT_OFF;
CHECK_EQ(client->get_string(), String());
CHECK_EQ(client_from_server->get_string(), String());
ERR_PRINT_ON;
}
} // namespace TestTCPServer