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llvm-project/lldb/unittests/Host/SocketTest.cpp
Pavel Labath b77114b723
[lldb] Remove child_process_inherit argument from Pipe (#145516) 
It's not necessary on posix platforms as of #126935 and it's ignored on
windows as of #138896. For both platforms, we have a better way of
inheriting FDs/HANDLEs.
2025-06-26 13:51:14 +02:00

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//===-- SocketTest.cpp ----------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "TestingSupport/Host/SocketTestUtilities.h"
#include "TestingSupport/SubsystemRAII.h"
#include "lldb/Host/Config.h"
#include "lldb/Host/MainLoop.h"
#include "lldb/Utility/UriParser.h"
#include "llvm/Testing/Support/Error.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <chrono>
#if __linux__
#include <lldb/Host/linux/AbstractSocket.h>
#endif
using namespace lldb_private;
struct SocketTestParams {
bool is_ipv6;
std::string localhost_ip;
};
class SocketTest : public testing::TestWithParam<SocketTestParams> {
public:
SubsystemRAII<Socket> subsystems;
protected:
bool HostSupportsProtocol() const {
if (GetParam().is_ipv6)
return HostSupportsIPv6();
return HostSupportsIPv4();
}
};
TEST_F(SocketTest, DecodeHostAndPort) {
EXPECT_THAT_EXPECTED(Socket::DecodeHostAndPort("localhost:1138"),
llvm::HasValue(Socket::HostAndPort{"localhost", 1138}));
EXPECT_THAT_EXPECTED(
Socket::DecodeHostAndPort("google.com:65536"),
llvm::FailedWithMessage(
"invalid host:port specification: 'google.com:65536'"));
EXPECT_THAT_EXPECTED(
Socket::DecodeHostAndPort("google.com:-1138"),
llvm::FailedWithMessage(
"invalid host:port specification: 'google.com:-1138'"));
EXPECT_THAT_EXPECTED(
Socket::DecodeHostAndPort("google.com:65536"),
llvm::FailedWithMessage(
"invalid host:port specification: 'google.com:65536'"));
EXPECT_THAT_EXPECTED(Socket::DecodeHostAndPort("12345"),
llvm::HasValue(Socket::HostAndPort{"", 12345}));
EXPECT_THAT_EXPECTED(Socket::DecodeHostAndPort("*:0"),
llvm::HasValue(Socket::HostAndPort{"*", 0}));
EXPECT_THAT_EXPECTED(Socket::DecodeHostAndPort("*:65535"),
llvm::HasValue(Socket::HostAndPort{"*", 65535}));
EXPECT_THAT_EXPECTED(Socket::DecodeHostAndPort("[::1]:12345"),
llvm::HasValue(Socket::HostAndPort{"::1", 12345}));
EXPECT_THAT_EXPECTED(
Socket::DecodeHostAndPort("[abcd:12fg:AF58::1]:12345"),
llvm::HasValue(Socket::HostAndPort{"abcd:12fg:AF58::1", 12345}));
}
TEST_F(SocketTest, CreatePair) {
std::vector<std::optional<Socket::SocketProtocol>> functional_protocols = {
std::nullopt,
Socket::ProtocolTcp,
#if LLDB_ENABLE_POSIX
Socket::ProtocolUnixDomain,
Socket::ProtocolUnixAbstract,
#endif
};
for (auto p : functional_protocols) {
auto expected_socket_pair = Socket::CreatePair(p);
ASSERT_THAT_EXPECTED(expected_socket_pair, llvm::Succeeded());
Socket &a = *expected_socket_pair->first;
Socket &b = *expected_socket_pair->second;
size_t num_bytes = 1;
ASSERT_THAT_ERROR(a.Write("a", num_bytes).takeError(), llvm::Succeeded());
ASSERT_EQ(num_bytes, 1U);
char c;
ASSERT_THAT_ERROR(b.Read(&c, num_bytes).takeError(), llvm::Succeeded());
ASSERT_EQ(num_bytes, 1U);
ASSERT_EQ(c, 'a');
}
std::vector<Socket::SocketProtocol> erroring_protocols = {
#if !LLDB_ENABLE_POSIX
Socket::ProtocolUnixDomain,
Socket::ProtocolUnixAbstract,
#endif
};
for (auto p : erroring_protocols) {
ASSERT_THAT_EXPECTED(Socket::CreatePair(p),
llvm::FailedWithMessage("Unsupported protocol"));
}
}
#if LLDB_ENABLE_POSIX
TEST_F(SocketTest, DomainListenConnectAccept) {
llvm::SmallString<64> Path;
std::error_code EC =
llvm::sys::fs::createUniqueDirectory("DomainListenConnectAccept", Path);
ASSERT_FALSE(EC);
llvm::sys::path::append(Path, "test");
// Skip the test if the $TMPDIR is too long to hold a domain socket.
if (Path.size() > 107u)
return;
std::unique_ptr<DomainSocket> socket_a_up;
std::unique_ptr<DomainSocket> socket_b_up;
CreateDomainConnectedSockets(Path, &socket_a_up, &socket_b_up);
}
TEST_F(SocketTest, DomainListenGetListeningConnectionURI) {
llvm::SmallString<64> Path;
std::error_code EC =
llvm::sys::fs::createUniqueDirectory("DomainListenConnectAccept", Path);
ASSERT_FALSE(EC);
llvm::sys::path::append(Path, "test");
// Skip the test if the $TMPDIR is too long to hold a domain socket.
if (Path.size() > 107u)
return;
auto listen_socket_up = std::make_unique<DomainSocket>(
/*should_close=*/true);
Status error = listen_socket_up->Listen(Path, 5);
ASSERT_THAT_ERROR(error.ToError(), llvm::Succeeded());
ASSERT_TRUE(listen_socket_up->IsValid());
ASSERT_THAT(
listen_socket_up->GetListeningConnectionURI(),
testing::ElementsAre(llvm::formatv("unix-connect://{0}", Path).str()));
}
TEST_F(SocketTest, DomainMainLoopAccept) {
llvm::SmallString<64> Path;
std::error_code EC =
llvm::sys::fs::createUniqueDirectory("DomainListenConnectAccept", Path);
ASSERT_FALSE(EC);
llvm::sys::path::append(Path, "test");
// Skip the test if the $TMPDIR is too long to hold a domain socket.
if (Path.size() > 107u)
return;
auto listen_socket_up = std::make_unique<DomainSocket>(
/*should_close=*/true);
Status error = listen_socket_up->Listen(Path, 5);
ASSERT_THAT_ERROR(error.ToError(), llvm::Succeeded());
ASSERT_TRUE(listen_socket_up->IsValid());
MainLoop loop;
std::unique_ptr<Socket> accepted_socket_up;
auto expected_handles = listen_socket_up->Accept(
loop, [&accepted_socket_up, &loop](std::unique_ptr<Socket> sock_up) {
accepted_socket_up = std::move(sock_up);
loop.RequestTermination();
});
ASSERT_THAT_EXPECTED(expected_handles, llvm::Succeeded());
auto connect_socket_up = std::make_unique<DomainSocket>(
/*should_close=*/true);
ASSERT_THAT_ERROR(connect_socket_up->Connect(Path).ToError(),
llvm::Succeeded());
ASSERT_TRUE(connect_socket_up->IsValid());
loop.Run();
ASSERT_TRUE(accepted_socket_up);
ASSERT_TRUE(accepted_socket_up->IsValid());
}
#endif
TEST_P(SocketTest, TCPListen0ConnectAccept) {
if (!HostSupportsProtocol())
return;
std::unique_ptr<TCPSocket> socket_a_up;
std::unique_ptr<TCPSocket> socket_b_up;
CreateTCPConnectedSockets(GetParam().localhost_ip, &socket_a_up,
&socket_b_up);
}
TEST_P(SocketTest, TCPAcceptTimeout) {
if (!HostSupportsProtocol())
return;
auto listen_socket_up = std::make_unique<TCPSocket>(true);
Status error = listen_socket_up->Listen(
llvm::formatv("[{0}]:0", GetParam().localhost_ip).str(), 5);
ASSERT_THAT_ERROR(error.ToError(), llvm::Succeeded());
ASSERT_TRUE(listen_socket_up->IsValid());
Socket *socket;
ASSERT_THAT_ERROR(
listen_socket_up->Accept(std::chrono::milliseconds(10), socket)
.takeError(),
llvm::Failed<llvm::ErrorInfoBase>(
testing::Property(&llvm::ErrorInfoBase::convertToErrorCode,
std::make_error_code(std::errc::timed_out))));
}
TEST_P(SocketTest, TCPMainLoopAccept) {
if (!HostSupportsProtocol())
return;
auto listen_socket_up = std::make_unique<TCPSocket>(true);
Status error = listen_socket_up->Listen(
llvm::formatv("[{0}]:0", GetParam().localhost_ip).str(), 5);
ASSERT_THAT_ERROR(error.ToError(), llvm::Succeeded());
ASSERT_TRUE(listen_socket_up->IsValid());
MainLoop loop;
std::unique_ptr<Socket> accepted_socket_up;
auto expected_handles = listen_socket_up->Accept(
loop, [&accepted_socket_up, &loop](std::unique_ptr<Socket> sock_up) {
accepted_socket_up = std::move(sock_up);
loop.RequestTermination();
});
ASSERT_THAT_EXPECTED(expected_handles, llvm::Succeeded());
auto connect_socket_up = std::make_unique<TCPSocket>(true);
ASSERT_THAT_ERROR(
connect_socket_up
->Connect(llvm::formatv("[{0}]:{1}", GetParam().localhost_ip,
listen_socket_up->GetLocalPortNumber())
.str())
.ToError(),
llvm::Succeeded());
ASSERT_TRUE(connect_socket_up->IsValid());
loop.Run();
ASSERT_TRUE(accepted_socket_up);
ASSERT_TRUE(accepted_socket_up->IsValid());
}
TEST_P(SocketTest, TCPGetAddress) {
std::unique_ptr<TCPSocket> socket_a_up;
std::unique_ptr<TCPSocket> socket_b_up;
if (!HostSupportsProtocol())
return;
CreateTCPConnectedSockets(GetParam().localhost_ip, &socket_a_up,
&socket_b_up);
EXPECT_EQ(socket_a_up->GetLocalPortNumber(),
socket_b_up->GetRemotePortNumber());
EXPECT_EQ(socket_b_up->GetLocalPortNumber(),
socket_a_up->GetRemotePortNumber());
EXPECT_NE(socket_a_up->GetLocalPortNumber(),
socket_b_up->GetLocalPortNumber());
EXPECT_STREQ(GetParam().localhost_ip.c_str(),
socket_a_up->GetRemoteIPAddress().c_str());
EXPECT_STREQ(GetParam().localhost_ip.c_str(),
socket_b_up->GetRemoteIPAddress().c_str());
}
TEST_P(SocketTest, UDPConnect) {
// UDPSocket::Connect() creates sockets with AF_INET (IPv4).
if (!HostSupportsIPv4())
return;
llvm::Expected<std::unique_ptr<UDPSocket>> socket =
UDPSocket::CreateConnected("127.0.0.1:0");
ASSERT_THAT_EXPECTED(socket, llvm::Succeeded());
EXPECT_TRUE(socket.get()->IsValid());
}
TEST_P(SocketTest, TCPListen0GetPort) {
if (!HostSupportsIPv4())
return;
llvm::Expected<std::unique_ptr<TCPSocket>> sock =
Socket::TcpListen("10.10.12.3:0", 5);
ASSERT_THAT_EXPECTED(sock, llvm::Succeeded());
ASSERT_TRUE(sock.get()->IsValid());
EXPECT_NE(sock.get()->GetLocalPortNumber(), 0);
}
TEST_P(SocketTest, TCPListen0GetListeningConnectionURI) {
if (!HostSupportsProtocol())
return;
std::string addr = llvm::formatv("[{0}]:0", GetParam().localhost_ip).str();
llvm::Expected<std::unique_ptr<TCPSocket>> sock = Socket::TcpListen(addr);
ASSERT_THAT_EXPECTED(sock, llvm::Succeeded());
ASSERT_TRUE(sock.get()->IsValid());
EXPECT_THAT(
sock.get()->GetListeningConnectionURI(),
testing::ElementsAre(llvm::formatv("connection://[{0}]:{1}",
GetParam().localhost_ip,
sock->get()->GetLocalPortNumber())
.str()));
}
TEST_F(SocketTest, TCPListen0MultiListenerGetListeningConnectionURI) {
if (!HostSupportsLocalhostToIPv4() || !HostSupportsLocalhostToIPv6())
return;
llvm::Expected<std::unique_ptr<TCPSocket>> sock =
Socket::TcpListen("localhost:0", 5);
ASSERT_THAT_EXPECTED(sock, llvm::Succeeded());
ASSERT_TRUE(sock.get()->IsValid());
EXPECT_THAT(sock.get()->GetListeningConnectionURI(),
testing::UnorderedElementsAre(
llvm::formatv("connection://[::1]:{0}",
sock->get()->GetLocalPortNumber())
.str(),
llvm::formatv("connection://[127.0.0.1]:{0}",
sock->get()->GetLocalPortNumber())
.str()));
}
TEST_P(SocketTest, TCPGetConnectURI) {
std::unique_ptr<TCPSocket> socket_a_up;
std::unique_ptr<TCPSocket> socket_b_up;
if (!HostSupportsProtocol())
return;
CreateTCPConnectedSockets(GetParam().localhost_ip, &socket_a_up,
&socket_b_up);
std::string uri(socket_a_up->GetRemoteConnectionURI());
EXPECT_EQ((URI{"connect", GetParam().localhost_ip,
socket_a_up->GetRemotePortNumber(), "/"}),
URI::Parse(uri));
}
TEST_P(SocketTest, UDPGetConnectURI) {
// UDPSocket::Connect() creates sockets with AF_INET (IPv4).
if (!HostSupportsIPv4())
return;
llvm::Expected<std::unique_ptr<UDPSocket>> socket =
UDPSocket::CreateConnected("127.0.0.1:0");
ASSERT_THAT_EXPECTED(socket, llvm::Succeeded());
std::string uri = socket.get()->GetRemoteConnectionURI();
EXPECT_EQ((URI{"udp", "127.0.0.1", 0, "/"}), URI::Parse(uri));
}
#if LLDB_ENABLE_POSIX
TEST_F(SocketTest, DomainGetConnectURI) {
llvm::SmallString<64> domain_path;
std::error_code EC = llvm::sys::fs::createUniqueDirectory(
"DomainListenConnectAccept", domain_path);
ASSERT_FALSE(EC);
llvm::sys::path::append(domain_path, "test");
// Skip the test if the $TMPDIR is too long to hold a domain socket.
if (domain_path.size() > 107u)
return;
std::unique_ptr<DomainSocket> socket_a_up;
std::unique_ptr<DomainSocket> socket_b_up;
CreateDomainConnectedSockets(domain_path, &socket_a_up, &socket_b_up);
std::string uri(socket_a_up->GetRemoteConnectionURI());
EXPECT_EQ((URI{"unix-connect", "", std::nullopt, domain_path}),
URI::Parse(uri));
EXPECT_EQ(socket_b_up->GetRemoteConnectionURI(), "");
}
TEST_F(SocketTest, DomainSocketFromBoundNativeSocket) {
// Generate a name for the domain socket.
llvm::SmallString<64> name;
std::error_code EC = llvm::sys::fs::createUniqueDirectory(
"DomainSocketFromBoundNativeSocket", name);
ASSERT_FALSE(EC);
llvm::sys::path::append(name, "test");
// Skip the test if the $TMPDIR is too long to hold a domain socket.
if (name.size() > 107u)
GTEST_SKIP() << "$TMPDIR is too long to hold a domain socket";
DomainSocket socket(true);
Status error = socket.Listen(name, /*backlog=*/10);
ASSERT_THAT_ERROR(error.takeError(), llvm::Succeeded());
NativeSocket native_socket = socket.GetNativeSocket();
llvm::Expected<std::unique_ptr<DomainSocket>> sock =
DomainSocket::FromBoundNativeSocket(native_socket,
/*should_close=*/false);
ASSERT_THAT_EXPECTED(sock, llvm::Succeeded());
ASSERT_EQ(Socket::ProtocolUnixDomain, sock->get()->GetSocketProtocol());
}
#endif
#if __linux__
TEST_F(SocketTest, AbstractSocketFromBoundNativeSocket) {
// Generate a name for the abstract socket.
llvm::SmallString<100> name;
llvm::sys::fs::createUniquePath("AbstractSocketFromBoundNativeSocket", name,
true);
llvm::sys::path::append(name, "test");
// Skip the test if the $TMPDIR is too long to hold a domain socket.
if (name.size() > 107u)
GTEST_SKIP() << "$TMPDIR is too long to hold a domain socket";
AbstractSocket socket;
Status error = socket.Listen(name, /*backlog=*/10);
ASSERT_THAT_ERROR(error.takeError(), llvm::Succeeded());
NativeSocket native_socket = socket.GetNativeSocket();
llvm::Expected<std::unique_ptr<DomainSocket>> sock =
DomainSocket::FromBoundNativeSocket(native_socket,
/*should_close=*/false);
ASSERT_THAT_EXPECTED(sock, llvm::Succeeded());
ASSERT_EQ(Socket::ProtocolUnixAbstract, sock->get()->GetSocketProtocol());
}
#endif
INSTANTIATE_TEST_SUITE_P(
SocketTests, SocketTest,
testing::Values(SocketTestParams{/*is_ipv6=*/false,
/*localhost_ip=*/"127.0.0.1"},
SocketTestParams{/*is_ipv6=*/true, /*localhost_ip=*/"::1"}),
// Prints "SocketTests/SocketTest.TCPGetAddress/ipv4" etc. in test logs.
[](const testing::TestParamInfo<SocketTestParams> &info) {
return info.param.is_ipv6 ? "ipv6" : "ipv4";
});
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