1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-19 07:47:39 +00:00

LibCore+Services: Make TCPServer propagate errors

This commit is contained in:
Sam Atkins 2021-12-25 14:59:40 +00:00 committed by Andreas Kling
parent 143f820c68
commit 8600d89407
6 changed files with 59 additions and 70 deletions

View file

@ -148,9 +148,11 @@ TEST_CASE(tcp_socket_read)
// Core::EventLoop through Core::Notifier. // Core::EventLoop through Core::Notifier.
Core::EventLoop event_loop; Core::EventLoop event_loop;
auto tcp_server = Core::TCPServer::construct(); auto maybe_tcp_server = Core::TCPServer::try_create();
EXPECT(tcp_server->listen({ 127, 0, 0, 1 }, 9090)); EXPECT(!maybe_tcp_server.is_error());
tcp_server->set_blocking(true); auto tcp_server = maybe_tcp_server.release_value();
EXPECT(!tcp_server->listen({ 127, 0, 0, 1 }, 9090).is_error());
EXPECT(!tcp_server->set_blocking(true).is_error());
auto maybe_client_socket = Core::Stream::TCPSocket::connect({ { 127, 0, 0, 1 }, 9090 }); auto maybe_client_socket = Core::Stream::TCPSocket::connect({ { 127, 0, 0, 1 }, 9090 });
EXPECT(!maybe_client_socket.is_error()); EXPECT(!maybe_client_socket.is_error());
@ -181,9 +183,11 @@ TEST_CASE(tcp_socket_write)
{ {
Core::EventLoop event_loop; Core::EventLoop event_loop;
auto tcp_server = Core::TCPServer::construct(); auto maybe_tcp_server = Core::TCPServer::try_create();
EXPECT(tcp_server->listen({ 127, 0, 0, 1 }, 9090)); EXPECT(!maybe_tcp_server.is_error());
tcp_server->set_blocking(true); auto tcp_server = maybe_tcp_server.release_value();
EXPECT(!tcp_server->listen({ 127, 0, 0, 1 }, 9090).is_error());
EXPECT(!tcp_server->set_blocking(true).is_error());
auto maybe_client_socket = Core::Stream::TCPSocket::connect({ { 127, 0, 0, 1 }, 9090 }); auto maybe_client_socket = Core::Stream::TCPSocket::connect({ { 127, 0, 0, 1 }, 9090 });
EXPECT(!maybe_client_socket.is_error()); EXPECT(!maybe_client_socket.is_error());
@ -210,9 +214,11 @@ TEST_CASE(tcp_socket_eof)
{ {
Core::EventLoop event_loop; Core::EventLoop event_loop;
auto tcp_server = Core::TCPServer::construct(); auto maybe_tcp_server = Core::TCPServer::try_create();
EXPECT(tcp_server->listen({ 127, 0, 0, 1 }, 9090)); EXPECT(!maybe_tcp_server.is_error());
tcp_server->set_blocking(true); auto tcp_server = maybe_tcp_server.release_value();
EXPECT(!tcp_server->listen({ 127, 0, 0, 1 }, 9090).is_error());
EXPECT(!tcp_server->set_blocking(true).is_error());
auto maybe_client_socket = Core::Stream::TCPSocket::connect({ { 127, 0, 0, 1 }, 9090 }); auto maybe_client_socket = Core::Stream::TCPSocket::connect({ { 127, 0, 0, 1 }, 9090 });
EXPECT(!maybe_client_socket.is_error()); EXPECT(!maybe_client_socket.is_error());
@ -404,9 +410,11 @@ TEST_CASE(buffered_tcp_socket_read)
{ {
Core::EventLoop event_loop; Core::EventLoop event_loop;
auto tcp_server = Core::TCPServer::construct(); auto maybe_tcp_server = Core::TCPServer::try_create();
EXPECT(tcp_server->listen({ 127, 0, 0, 1 }, 9090)); EXPECT(!maybe_tcp_server.is_error());
tcp_server->set_blocking(true); auto tcp_server = maybe_tcp_server.release_value();
EXPECT(!tcp_server->listen({ 127, 0, 0, 1 }, 9090).is_error());
EXPECT(!tcp_server->set_blocking(true).is_error());
auto maybe_client_socket = Core::Stream::TCPSocket::connect({ { 127, 0, 0, 1 }, 9090 }); auto maybe_client_socket = Core::Stream::TCPSocket::connect({ { 127, 0, 0, 1 }, 9090 });
EXPECT(!maybe_client_socket.is_error()); EXPECT(!maybe_client_socket.is_error());

View file

@ -1,5 +1,6 @@
/* /*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org> * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
* *
* SPDX-License-Identifier: BSD-2-Clause * SPDX-License-Identifier: BSD-2-Clause
*/ */
@ -7,53 +8,47 @@
#include <AK/IPv4Address.h> #include <AK/IPv4Address.h>
#include <AK/Types.h> #include <AK/Types.h>
#include <LibCore/Notifier.h> #include <LibCore/Notifier.h>
#include <LibCore/System.h>
#include <LibCore/TCPServer.h> #include <LibCore/TCPServer.h>
#include <LibCore/TCPSocket.h> #include <LibCore/TCPSocket.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/socket.h>
#include <unistd.h>
#ifndef SOCK_NONBLOCK
# include <sys/ioctl.h>
#endif
namespace Core { namespace Core {
TCPServer::TCPServer(Object* parent) ErrorOr<NonnullRefPtr<TCPServer>> TCPServer::try_create(Object* parent)
: Object(parent)
{ {
#ifdef SOCK_NONBLOCK #ifdef SOCK_NONBLOCK
m_fd = socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0); int fd = TRY(Core::System::socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0));
#else #else
m_fd = socket(AF_INET, SOCK_STREAM, 0); int fd = TRY(Core::System::socket(AF_INET, SOCK_STREAM, 0));
int option = 1; int option = 1;
ioctl(m_fd, FIONBIO, &option); TRY(Core::System::ioctl(fd, FIONBIO, &option));
fcntl(m_fd, F_SETFD, FD_CLOEXEC); TRY(Core::System::fcntl(fd, F_SETFD, FD_CLOEXEC));
#endif #endif
return adopt_nonnull_ref_or_enomem(new (nothrow) TCPServer(fd, parent));
}
TCPServer::TCPServer(int fd, Object* parent)
: Object(parent)
, m_fd(fd)
{
VERIFY(m_fd >= 0); VERIFY(m_fd >= 0);
} }
TCPServer::~TCPServer() TCPServer::~TCPServer()
{ {
::close(m_fd); MUST(Core::System::close(m_fd));
} }
bool TCPServer::listen(const IPv4Address& address, u16 port) ErrorOr<void> TCPServer::listen(IPv4Address const& address, u16 port)
{ {
if (m_listening) if (m_listening)
return false; return Error::from_errno(EADDRINUSE);
auto socket_address = SocketAddress(address, port); auto socket_address = SocketAddress(address, port);
auto in = socket_address.to_sockaddr_in(); auto in = socket_address.to_sockaddr_in();
if (::bind(m_fd, (const sockaddr*)&in, sizeof(in)) < 0) { TRY(Core::System::bind(m_fd, (sockaddr const*)&in, sizeof(in)));
perror("TCPServer::listen: bind"); TRY(Core::System::listen(m_fd, 5));
return false;
}
if (::listen(m_fd, 5) < 0) {
perror("TCPServer::listen: listen");
return false;
}
m_listening = true; m_listening = true;
m_notifier = Notifier::construct(m_fd, Notifier::Event::Read, this); m_notifier = Notifier::construct(m_fd, Notifier::Event::Read, this);
@ -61,18 +56,17 @@ bool TCPServer::listen(const IPv4Address& address, u16 port)
if (on_ready_to_accept) if (on_ready_to_accept)
on_ready_to_accept(); on_ready_to_accept();
}; };
return true; return {};
} }
void TCPServer::set_blocking(bool blocking) ErrorOr<void> TCPServer::set_blocking(bool blocking)
{ {
int flags = fcntl(m_fd, F_GETFL, 0); int flags = TRY(Core::System::fcntl(m_fd, F_GETFL, 0));
VERIFY(flags >= 0);
if (blocking) if (blocking)
flags = fcntl(m_fd, F_SETFL, flags & ~O_NONBLOCK); TRY(Core::System::fcntl(m_fd, F_SETFL, flags & ~O_NONBLOCK));
else else
flags = fcntl(m_fd, F_SETFL, flags | O_NONBLOCK); TRY(Core::System::fcntl(m_fd, F_SETFL, flags | O_NONBLOCK));
VERIFY(flags == 0); return {};
} }
ErrorOr<Stream::TCPSocket> TCPServer::accept() ErrorOr<Stream::TCPSocket> TCPServer::accept()
@ -81,15 +75,11 @@ ErrorOr<Stream::TCPSocket> TCPServer::accept()
sockaddr_in in; sockaddr_in in;
socklen_t in_size = sizeof(in); socklen_t in_size = sizeof(in);
#ifndef AK_OS_MACOS #ifndef AK_OS_MACOS
int accepted_fd = ::accept4(m_fd, (sockaddr*)&in, &in_size, SOCK_NONBLOCK | SOCK_CLOEXEC); int accepted_fd = TRY(Core::System::accept4(m_fd, (sockaddr*)&in, &in_size, SOCK_NONBLOCK | SOCK_CLOEXEC));
#else #else
int accepted_fd = ::accept(m_fd, (sockaddr*)&in, &in_size); int accepted_fd = TRY(Core::System::accept(m_fd, (sockaddr*)&in, &in_size));
#endif #endif
if (accepted_fd < 0) {
return Error::from_errno(errno);
}
auto socket = TRY(Stream::TCPSocket::adopt_fd(accepted_fd)); auto socket = TRY(Stream::TCPSocket::adopt_fd(accepted_fd));
#ifdef AK_OS_MACOS #ifdef AK_OS_MACOS

View file

@ -1,5 +1,6 @@
/* /*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org> * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
* *
* SPDX-License-Identifier: BSD-2-Clause * SPDX-License-Identifier: BSD-2-Clause
*/ */
@ -14,13 +15,14 @@
namespace Core { namespace Core {
class TCPServer : public Object { class TCPServer : public Object {
C_OBJECT(TCPServer) C_OBJECT_ABSTRACT(TCPServer)
public: public:
static ErrorOr<NonnullRefPtr<TCPServer>> try_create(Object* parent = nullptr);
virtual ~TCPServer() override; virtual ~TCPServer() override;
bool is_listening() const { return m_listening; } bool is_listening() const { return m_listening; }
bool listen(const IPv4Address& address, u16 port); ErrorOr<void> listen(IPv4Address const& address, u16 port);
void set_blocking(bool blocking); ErrorOr<void> set_blocking(bool blocking);
ErrorOr<Stream::TCPSocket> accept(); ErrorOr<Stream::TCPSocket> accept();
@ -30,7 +32,7 @@ public:
Function<void()> on_ready_to_accept; Function<void()> on_ready_to_accept;
private: private:
explicit TCPServer(Object* parent = nullptr); explicit TCPServer(int fd, Object* parent = nullptr);
int m_fd { -1 }; int m_fd { -1 };
bool m_listening { false }; bool m_listening { false };

View file

@ -31,12 +31,8 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
Core::EventLoop event_loop; Core::EventLoop event_loop;
auto server = Core::TCPServer::construct(); auto server = TRY(Core::TCPServer::try_create());
TRY(server->listen({}, port));
if (!server->listen({}, port)) {
warnln("Listening on 0.0.0.0:{} failed", port);
exit(1);
}
HashMap<int, NonnullRefPtr<Client>> clients; HashMap<int, NonnullRefPtr<Client>> clients;
int next_id = 0; int next_id = 0;

View file

@ -97,12 +97,8 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
} }
Core::EventLoop event_loop; Core::EventLoop event_loop;
auto server = Core::TCPServer::construct(); auto server = TRY(Core::TCPServer::try_create());
TRY(server->listen({}, port));
if (!server->listen({}, port)) {
warnln("Listening on 0.0.0.0:{} failed", port);
exit(1);
}
HashMap<int, NonnullRefPtr<Client>> clients; HashMap<int, NonnullRefPtr<Client>> clients;
int next_id = 0; int next_id = 0;

View file

@ -89,10 +89,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
client->start(); client->start();
}; };
if (!server->listen(ipv4_address.value(), port)) { TRY(server->listen(ipv4_address.value(), port));
warnln("Failed to listen on {}:{}", ipv4_address.value(), port);
return 1;
}
outln("Listening on {}:{}", ipv4_address.value(), port); outln("Listening on {}:{}", ipv4_address.value(), port);