diff options
Diffstat (limited to 'test/syscalls/linux/udp_socket.cc')
| -rw-r--r-- | test/syscalls/linux/udp_socket.cc | 1321 |
1 files changed, 1 insertions, 1320 deletions
diff --git a/test/syscalls/linux/udp_socket.cc b/test/syscalls/linux/udp_socket.cc index 111dbacdf..7a8ac30a4 100644 --- a/test/syscalls/linux/udp_socket.cc +++ b/test/syscalls/linux/udp_socket.cc @@ -12,1332 +12,13 @@ // See the License for the specific language governing permissions and // limitations under the License. -#include <arpa/inet.h> -#include <fcntl.h> -#include <linux/errqueue.h> -#include <netinet/in.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> - -#include "gtest/gtest.h" -#include "absl/base/macros.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" +#include "test/syscalls/linux/udp_socket_test_cases.h" namespace gvisor { namespace testing { namespace { -// The initial port to be be used on gvisor. -constexpr int TestPort = 40000; - -// Fixture for tests parameterized by the address family to use (AF_INET and -// AF_INET6) when creating sockets. -class UdpSocketTest : public ::testing::TestWithParam<AddressFamily> { - protected: - // Creates two sockets that will be used by test cases. - void SetUp() override; - - // Closes the sockets created by SetUp(). - void TearDown() override { - EXPECT_THAT(close(s_), SyscallSucceeds()); - EXPECT_THAT(close(t_), SyscallSucceeds()); - - for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { - ASSERT_NO_ERRNO(FreeAvailablePort(ports_[i])); - } - } - - // First UDP socket. - int s_; - - // Second UDP socket. - int t_; - - // The length of the socket address. - socklen_t addrlen_; - - // Initialized address pointing to loopback and port TestPort+i. - struct sockaddr* addr_[3]; - - // Initialize "any" address. - struct sockaddr* anyaddr_; - - // Used ports. - int ports_[3]; - - private: - // Storage for the loopback addresses. - struct sockaddr_storage addr_storage_[3]; - - // Storage for the "any" address. - struct sockaddr_storage anyaddr_storage_; -}; - -// Gets a pointer to the port component of the given address. -uint16_t* Port(struct sockaddr_storage* addr) { - switch (addr->ss_family) { - case AF_INET: { - auto sin = reinterpret_cast<struct sockaddr_in*>(addr); - return &sin->sin_port; - } - case AF_INET6: { - auto sin6 = reinterpret_cast<struct sockaddr_in6*>(addr); - return &sin6->sin6_port; - } - } - - return nullptr; -} - -void UdpSocketTest::SetUp() { - int type; - if (GetParam() == AddressFamily::kIpv4) { - type = AF_INET; - auto sin = reinterpret_cast<struct sockaddr_in*>(&anyaddr_storage_); - addrlen_ = sizeof(*sin); - sin->sin_addr.s_addr = htonl(INADDR_ANY); - } else { - type = AF_INET6; - auto sin6 = reinterpret_cast<struct sockaddr_in6*>(&anyaddr_storage_); - addrlen_ = sizeof(*sin6); - if (GetParam() == AddressFamily::kIpv6) { - sin6->sin6_addr = IN6ADDR_ANY_INIT; - } else { - TestAddress const& v4_mapped_any = V4MappedAny(); - sin6->sin6_addr = - reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) - ->sin6_addr; - } - } - ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); - - ASSERT_THAT(t_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); - - memset(&anyaddr_storage_, 0, sizeof(anyaddr_storage_)); - anyaddr_ = reinterpret_cast<struct sockaddr*>(&anyaddr_storage_); - anyaddr_->sa_family = type; - - if (gvisor::testing::IsRunningOnGvisor()) { - for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { - ports_[i] = TestPort + i; - } - } else { - // When not under gvisor, use utility function to pick port. Assert that - // all ports are different. - std::string error; - for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { - // Find an unused port, we specify port 0 to allow the kernel to provide - // the port. - bool unique = true; - do { - ports_[i] = ASSERT_NO_ERRNO_AND_VALUE(PortAvailable( - 0, AddressFamily::kDualStack, SocketType::kUdp, false)); - ASSERT_GT(ports_[i], 0); - for (size_t j = 0; j < i; ++j) { - if (ports_[j] == ports_[i]) { - unique = false; - break; - } - } - } while (!unique); - } - } - - // Initialize the sockaddrs. - for (size_t i = 0; i < ABSL_ARRAYSIZE(addr_); ++i) { - memset(&addr_storage_[i], 0, sizeof(addr_storage_[i])); - - addr_[i] = reinterpret_cast<struct sockaddr*>(&addr_storage_[i]); - addr_[i]->sa_family = type; - - switch (type) { - case AF_INET: { - auto sin = reinterpret_cast<struct sockaddr_in*>(addr_[i]); - sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK); - sin->sin_port = htons(ports_[i]); - break; - } - case AF_INET6: { - auto sin6 = reinterpret_cast<struct sockaddr_in6*>(addr_[i]); - sin6->sin6_addr = in6addr_loopback; - sin6->sin6_port = htons(ports_[i]); - break; - } - } - } -} - -TEST_P(UdpSocketTest, Creation) { - int type = AF_INET6; - if (GetParam() == AddressFamily::kIpv4) { - type = AF_INET; - } - - int s_; - - ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); - EXPECT_THAT(close(s_), SyscallSucceeds()); - - ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, 0), SyscallSucceeds()); - EXPECT_THAT(close(s_), SyscallSucceeds()); - - ASSERT_THAT(s_ = socket(type, SOCK_STREAM, IPPROTO_UDP), SyscallFails()); -} - -TEST_P(UdpSocketTest, Getsockname) { - // Check that we're not bound. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, anyaddr_, addrlen_), 0); - - // Bind, then check that we get the right address. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); -} - -TEST_P(UdpSocketTest, Getpeername) { - // Check that we're not connected. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - - // Connect, then check that we get the right address. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); -} - -TEST_P(UdpSocketTest, SendNotConnected) { - // Do send & write, they must fail. - char buf[512]; - EXPECT_THAT(send(s_, buf, sizeof(buf), 0), - SyscallFailsWithErrno(EDESTADDRREQ)); - - EXPECT_THAT(write(s_, buf, sizeof(buf)), SyscallFailsWithErrno(EDESTADDRREQ)); - - // Use sendto. - ASSERT_THAT(sendto(s_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Check that we're bound now. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_NE(*Port(&addr), 0); -} - -TEST_P(UdpSocketTest, ConnectBinds) { - // Connect the socket. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that we're bound now. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_NE(*Port(&addr), 0); -} - -TEST_P(UdpSocketTest, ReceiveNotBound) { - char buf[512]; - EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, Bind) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Try to bind again. - EXPECT_THAT(bind(s_, addr_[1], addrlen_), SyscallFailsWithErrno(EINVAL)); - - // Check that we're still bound to the original address. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); -} - -TEST_P(UdpSocketTest, BindInUse) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Try to bind again. - EXPECT_THAT(bind(t_, addr_[0], addrlen_), SyscallFailsWithErrno(EADDRINUSE)); -} - -TEST_P(UdpSocketTest, ReceiveAfterConnect) { - // Connect s_ to loopback:TestPort, and bind t_ to loopback:TestPort. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(bind(t_, addr_[0], addrlen_), SyscallSucceeds()); - - // Get the address s_ was bound to during connect. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - - // Send from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, - reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, ReceiveAfterDisconnect) { - // Connect s_ to loopback:TestPort, and bind t_ to loopback:TestPort. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(bind(t_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Get the address s_ was bound to during connect. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - - for (int i = 0; i < 2; i++) { - // Send from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, - reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); - - // Disconnect s_. - struct sockaddr addr = {}; - addr.sa_family = AF_UNSPEC; - ASSERT_THAT(connect(s_, &addr, sizeof(addr.sa_family)), SyscallSucceeds()); - // Connect s_ loopback:TestPort. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - } -} - -TEST_P(UdpSocketTest, Connect) { - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that we're connected to the right peer. - struct sockaddr_storage peer; - socklen_t peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, addr_[0], addrlen_), 0); - - // Try to bind after connect. - EXPECT_THAT(bind(s_, addr_[1], addrlen_), SyscallFailsWithErrno(EINVAL)); - - // Try to connect again. - EXPECT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - // Check that peer name changed. - peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, addr_[2], addrlen_), 0); -} - -void ConnectAny(AddressFamily family, int sockfd, uint16_t port) { - struct sockaddr_storage addr = {}; - - // Precondition check. - { - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - if (family == AddressFamily::kIpv4) { - auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_ANY)); - } else { - auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - struct in6_addr any = IN6ADDR_ANY_INIT; - EXPECT_EQ(memcmp(&addr_out->sin6_addr, &any, sizeof(in6_addr)), 0); - } - - { - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - } - - struct sockaddr_storage baddr = {}; - if (family == AddressFamily::kIpv4) { - auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin_family = AF_INET; - addr_in->sin_addr.s_addr = htonl(INADDR_ANY); - addr_in->sin_port = port; - } else { - auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin6_family = AF_INET6; - addr_in->sin6_port = port; - if (family == AddressFamily::kIpv6) { - addr_in->sin6_addr = IN6ADDR_ANY_INIT; - } else { - TestAddress const& v4_mapped_any = V4MappedAny(); - addr_in->sin6_addr = - reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) - ->sin6_addr; - } - } - - // TODO(b/138658473): gVisor doesn't allow connecting to the zero port. - if (port == 0) { - SKIP_IF(IsRunningOnGvisor()); - } - - ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&baddr), addrlen), - SyscallSucceeds()); - } - - // Postcondition check. - { - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - if (family == AddressFamily::kIpv4) { - auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_LOOPBACK)); - } else { - auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - struct in6_addr loopback; - if (family == AddressFamily::kIpv6) { - loopback = IN6ADDR_LOOPBACK_INIT; - } else { - TestAddress const& v4_mapped_loopback = V4MappedLoopback(); - loopback = reinterpret_cast<const struct sockaddr_in6*>( - &v4_mapped_loopback.addr) - ->sin6_addr; - } - - EXPECT_EQ(memcmp(&addr_out->sin6_addr, &loopback, sizeof(in6_addr)), 0); - } - - addrlen = sizeof(addr); - if (port == 0) { - EXPECT_THAT( - getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - } else { - EXPECT_THAT( - getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - } - } -} - -TEST_P(UdpSocketTest, ConnectAny) { ConnectAny(GetParam(), s_, 0); } - -TEST_P(UdpSocketTest, ConnectAnyWithPort) { - auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); - ConnectAny(GetParam(), s_, port); -} - -void DisconnectAfterConnectAny(AddressFamily family, int sockfd, int port) { - struct sockaddr_storage addr = {}; - - socklen_t addrlen = sizeof(addr); - struct sockaddr_storage baddr = {}; - if (family == AddressFamily::kIpv4) { - auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin_family = AF_INET; - addr_in->sin_addr.s_addr = htonl(INADDR_ANY); - addr_in->sin_port = port; - } else { - auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin6_family = AF_INET6; - addr_in->sin6_port = port; - if (family == AddressFamily::kIpv6) { - addr_in->sin6_addr = IN6ADDR_ANY_INIT; - } else { - TestAddress const& v4_mapped_any = V4MappedAny(); - addr_in->sin6_addr = - reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) - ->sin6_addr; - } - } - - // TODO(b/138658473): gVisor doesn't allow connecting to the zero port. - if (port == 0) { - SKIP_IF(IsRunningOnGvisor()); - } - - ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&baddr), addrlen), - SyscallSucceeds()); - // Now the socket is bound to the loopback address. - - // Disconnect - addrlen = sizeof(addr); - addr.ss_family = AF_UNSPEC; - ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceeds()); - - // Check that after disconnect the socket is bound to the ANY address. - EXPECT_THAT(getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - if (family == AddressFamily::kIpv4) { - auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_ANY)); - } else { - auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - struct in6_addr loopback = IN6ADDR_ANY_INIT; - - EXPECT_EQ(memcmp(&addr_out->sin6_addr, &loopback, sizeof(in6_addr)), 0); - } -} - -TEST_P(UdpSocketTest, DisconnectAfterConnectAny) { - DisconnectAfterConnectAny(GetParam(), s_, 0); -} - -TEST_P(UdpSocketTest, DisconnectAfterConnectAnyWithPort) { - auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); - DisconnectAfterConnectAny(GetParam(), s_, port); -} - -TEST_P(UdpSocketTest, DisconnectAfterBind) { - ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); - // Connect the socket. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - struct sockaddr_storage addr = {}; - addr.ss_family = AF_UNSPEC; - EXPECT_THAT( - connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), - SyscallSucceeds()); - - // Check that we're still bound. - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[1], addrlen_), 0); - - addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, DisconnectAfterBindToAny) { - struct sockaddr_storage baddr = {}; - socklen_t addrlen; - auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); - if (GetParam() == AddressFamily::kIpv4) { - auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); - addr_in->sin_family = AF_INET; - addr_in->sin_port = port; - addr_in->sin_addr.s_addr = htonl(INADDR_ANY); - } else { - auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); - addr_in->sin6_family = AF_INET6; - addr_in->sin6_port = port; - addr_in->sin6_scope_id = 0; - addr_in->sin6_addr = IN6ADDR_ANY_INIT; - } - ASSERT_THAT(bind(s_, reinterpret_cast<sockaddr*>(&baddr), addrlen_), - SyscallSucceeds()); - // Connect the socket. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - struct sockaddr_storage addr = {}; - addr.ss_family = AF_UNSPEC; - EXPECT_THAT( - connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), - SyscallSucceeds()); - - // Check that we're still bound. - addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, &baddr, addrlen), 0); - - addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, Disconnect) { - for (int i = 0; i < 2; i++) { - // Try to connect again. - EXPECT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - // Check that we're connected to the right peer. - struct sockaddr_storage peer; - socklen_t peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, addr_[2], addrlen_), 0); - - // Try to disconnect. - struct sockaddr_storage addr = {}; - addr.ss_family = AF_UNSPEC; - EXPECT_THAT( - connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), - SyscallSucceeds()); - - peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallFailsWithErrno(ENOTCONN)); - - // Check that we're still bound. - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(*Port(&addr), 0); - } -} - -TEST_P(UdpSocketTest, ConnectBadAddress) { - struct sockaddr addr = {}; - addr.sa_family = addr_[0]->sa_family; - ASSERT_THAT(connect(s_, &addr, sizeof(addr.sa_family)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(UdpSocketTest, SendToAddressOtherThanConnected) { - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send to a different destination than we're connected to. - char buf[512]; - EXPECT_THAT(sendto(s_, buf, sizeof(buf), 0, addr_[1], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); -} - -TEST_P(UdpSocketTest, ZerolengthWriteAllowed) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from s_ to t_. - ASSERT_THAT(write(s_, buf, 0), SyscallSucceedsWithValue(0)); - // Receive the packet. - char received[3]; - EXPECT_THAT(read(t_, received, sizeof(received)), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UdpSocketTest, ZerolengthWriteAllowedNonBlockRead) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Set t_ to non-blocking. - int opts = 0; - ASSERT_THAT(opts = fcntl(t_, F_GETFL), SyscallSucceeds()); - ASSERT_THAT(fcntl(t_, F_SETFL, opts | O_NONBLOCK), SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from s_ to t_. - ASSERT_THAT(write(s_, buf, 0), SyscallSucceedsWithValue(0)); - // Receive the packet. - char received[3]; - EXPECT_THAT(read(t_, received, sizeof(received)), - SyscallSucceedsWithValue(0)); - EXPECT_THAT(read(t_, received, sizeof(received)), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(UdpSocketTest, SendAndReceiveNotConnected) { - // Bind s_ to loopback. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send some data to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, SendAndReceiveConnected) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, ReceiveFromNotConnected) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+2. - ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Check that the data isn't_ received because it was sent from a different - // address than we're connected. - EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, ReceiveBeforeConnect) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+2. - ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Connect to loopback:TestPort+1. - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Receive the data. It works because it was sent before the connect. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); - - // Send again. This time it should not be received. - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, ReceiveFrom) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data and sender address. - char received[sizeof(buf)]; - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(recvfrom(s_, received, sizeof(received), 0, - reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[1], addrlen_), 0); -} - -TEST_P(UdpSocketTest, Listen) { - ASSERT_THAT(listen(s_, SOMAXCONN), SyscallFailsWithErrno(EOPNOTSUPP)); -} - -TEST_P(UdpSocketTest, Accept) { - ASSERT_THAT(accept(s_, nullptr, nullptr), SyscallFailsWithErrno(EOPNOTSUPP)); -} - -// This test validates that a read shutdown with pending data allows the read -// to proceed with the data before returning EAGAIN. -TEST_P(UdpSocketTest, ReadShutdownNonblockPendingData) { - char received[512]; - - // Bind t_ to loopback:TestPort+2. - ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Connect the socket, then try to shutdown again. - ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - // Verify that we get EWOULDBLOCK when there is nothing to read. - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - const char* buf = "abc"; - EXPECT_THAT(write(t_, buf, 3), SyscallSucceedsWithValue(3)); - - int opts = 0; - ASSERT_THAT(opts = fcntl(s_, F_GETFL), SyscallSucceeds()); - ASSERT_THAT(fcntl(s_, F_SETFL, opts | O_NONBLOCK), SyscallSucceeds()); - ASSERT_THAT(opts = fcntl(s_, F_GETFL), SyscallSucceeds()); - ASSERT_NE(opts & O_NONBLOCK, 0); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - // We should get the data even though read has been shutdown. - EXPECT_THAT(recv(s_, received, 2, 0), SyscallSucceedsWithValue(2)); - - // Because we read less than the entire packet length, since it's a packet - // based socket any subsequent reads should return EWOULDBLOCK. - EXPECT_THAT(recv(s_, received, 1, 0), SyscallFailsWithErrno(EWOULDBLOCK)); -} - -// This test is validating that even after a socket is shutdown if it's -// reconnected it will reset the shutdown state. -TEST_P(UdpSocketTest, ReadShutdownSameSocketResetsShutdownState) { - char received[512]; - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then try to shutdown again. - ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, ReadShutdown) { - char received[512]; - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then try to shutdown again. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UdpSocketTest, ReadShutdownDifferentThread) { - char received[512]; - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then shutdown from another thread. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - ScopedThread t([&] { - absl::SleepFor(absl::Milliseconds(200)); - EXPECT_THAT(shutdown(this->s_, SHUT_RD), SyscallSucceeds()); - }); - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(0)); - t.Join(); - - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UdpSocketTest, WriteShutdown) { - EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallSucceeds()); -} - -TEST_P(UdpSocketTest, SynchronousReceive) { - // Bind s_ to loopback. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send some data to s_ from another thread. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - // Receive the data prior to actually starting the other thread. - char received[512]; - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Start the thread. - ScopedThread t([&] { - absl::SleepFor(absl::Milliseconds(200)); - ASSERT_THAT( - sendto(this->t_, buf, sizeof(buf), 0, this->addr_[0], this->addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - }); - - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(512)); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_SendRecv) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send 3 packets from t_ to s_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 3; ++i) { - ASSERT_THAT(sendto(t_, buf + i * psize, psize, 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(psize)); - } - - // Receive the data as 3 separate packets. - char received[6 * psize]; - for (int i = 0; i < 3; ++i) { - EXPECT_THAT(recv(s_, received + i * psize, 3 * psize, 0), - SyscallSucceedsWithValue(psize)); - } - EXPECT_EQ(memcmp(buf, received, 3 * psize), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_WritevReadv) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Direct writes from t_ to s_. - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send 2 packets from t_ to s_, where each packet's data consists of 2 - // discontiguous iovecs. - constexpr size_t kPieceSize = 100; - char buf[4 * kPieceSize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 2; i++) { - struct iovec iov[2]; - for (int j = 0; j < 2; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(buf) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - ASSERT_THAT(writev(t_, iov, 2), SyscallSucceedsWithValue(2 * kPieceSize)); - } - - // Receive the data as 2 separate packets. - char received[6 * kPieceSize]; - for (int i = 0; i < 2; i++) { - struct iovec iov[3]; - for (int j = 0; j < 3; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(received) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - ASSERT_THAT(readv(s_, iov, 3), SyscallSucceedsWithValue(2 * kPieceSize)); - } - EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_SendMsgRecvMsg) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send 2 packets from t_ to s_, where each packet's data consists of 2 - // discontiguous iovecs. - constexpr size_t kPieceSize = 100; - char buf[4 * kPieceSize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 2; i++) { - struct iovec iov[2]; - for (int j = 0; j < 2; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(buf) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - struct msghdr msg = {}; - msg.msg_name = addr_[0]; - msg.msg_namelen = addrlen_; - msg.msg_iov = iov; - msg.msg_iovlen = 2; - ASSERT_THAT(sendmsg(t_, &msg, 0), SyscallSucceedsWithValue(2 * kPieceSize)); - } - - // Receive the data as 2 separate packets. - char received[6 * kPieceSize]; - for (int i = 0; i < 2; i++) { - struct iovec iov[3]; - for (int j = 0; j < 3; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(received) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - struct msghdr msg = {}; - msg.msg_iov = iov; - msg.msg_iovlen = 3; - ASSERT_THAT(recvmsg(s_, &msg, 0), SyscallSucceedsWithValue(2 * kPieceSize)); - } - EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); -} - -TEST_P(UdpSocketTest, FIONREADShutdown) { - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); -} - -TEST_P(UdpSocketTest, FIONREADWriteShutdown) { - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - const char str[] = "abc"; - ASSERT_THAT(send(s_, str, sizeof(str), 0), - SyscallSucceedsWithValue(sizeof(str))); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, sizeof(str)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, sizeof(str)); -} - -TEST_P(UdpSocketTest, FIONREAD) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that the bound socket with an empty buffer reports an empty first - // packet. - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Send 3 packets from t_ to s_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 3; ++i) { - ASSERT_THAT(sendto(t_, buf + i * psize, psize, 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(psize)); - - // Check that regardless of how many packets are in the queue, the size - // reported is that of a single packet. - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, psize); - } -} - -TEST_P(UdpSocketTest, FIONREADZeroLengthPacket) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that the bound socket with an empty buffer reports an empty first - // packet. - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Send 3 packets from t_ to s_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 3; ++i) { - ASSERT_THAT(sendto(t_, buf + i * psize, 0, 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(0)); - - // Check that regardless of how many packets are in the queue, the size - // reported is that of a single packet. - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - } -} - -TEST_P(UdpSocketTest, FIONREADZeroLengthWriteShutdown) { - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - const char str[] = "abc"; - ASSERT_THAT(send(s_, str, 0, 0), SyscallSucceedsWithValue(0)); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); -} - -TEST_P(UdpSocketTest, ErrorQueue) { - char cmsgbuf[CMSG_SPACE(sizeof(sock_extended_err))]; - msghdr msg; - memset(&msg, 0, sizeof(msg)); - iovec iov; - memset(&iov, 0, sizeof(iov)); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = cmsgbuf; - msg.msg_controllen = sizeof(cmsgbuf); - - // recv*(MSG_ERRQUEUE) never blocks, even without MSG_DONTWAIT. - EXPECT_THAT(RetryEINTR(recvmsg)(s_, &msg, MSG_ERRQUEUE), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(UdpSocketTest, SoTimestampOffByDefault) { - int v = -1; - socklen_t optlen = sizeof(v); - ASSERT_THAT(getsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, &optlen), - SyscallSucceeds()); - ASSERT_EQ(v, kSockOptOff); - ASSERT_EQ(optlen, sizeof(v)); -} - -TEST_P(UdpSocketTest, SoTimestamp) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - int v = 1; - ASSERT_THAT(setsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), - SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from t_ to s_. - ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); - - char cmsgbuf[CMSG_SPACE(sizeof(struct timeval))]; - msghdr msg; - memset(&msg, 0, sizeof(msg)); - iovec iov; - memset(&iov, 0, sizeof(iov)); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = cmsgbuf; - msg.msg_controllen = sizeof(cmsgbuf); - - ASSERT_THAT(RetryEINTR(recvmsg)(s_, &msg, 0), SyscallSucceedsWithValue(0)); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg->cmsg_type, SO_TIMESTAMP); - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(struct timeval))); - - struct timeval tv = {}; - memcpy(&tv, CMSG_DATA(cmsg), sizeof(struct timeval)); - - ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); - - // There should be nothing to get via ioctl. - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallFailsWithErrno(ENOENT)); -} - -TEST_P(UdpSocketTest, WriteShutdownNotConnected) { - EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, TimestampIoctl) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send packet from t_ to s_. - ASSERT_THAT(RetryEINTR(write)(t_, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // There should be no control messages. - char recv_buf[sizeof(buf)]; - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(s_, recv_buf, sizeof(recv_buf))); - - // A nonzero timeval should be available via ioctl. - struct timeval tv = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallSucceeds()); - ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); -} - -TEST_P(UdpSocketTest, TimetstampIoctlNothingRead) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - struct timeval tv = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallFailsWithErrno(ENOENT)); -} - -// Test that the timestamp accessed via SIOCGSTAMP is still accessible after -// SO_TIMESTAMP is enabled and used to retrieve a timestamp. -TEST_P(UdpSocketTest, TimestampIoctlPersistence) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send packet from t_ to s_. - ASSERT_THAT(RetryEINTR(write)(t_, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); - - // There should be no control messages. - char recv_buf[sizeof(buf)]; - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(s_, recv_buf, sizeof(recv_buf))); - - // A nonzero timeval should be available via ioctl. - struct timeval tv = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallSucceeds()); - ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); - - // Enable SO_TIMESTAMP and send a message. - int v = 1; - EXPECT_THAT(setsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), - SyscallSucceeds()); - ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); - - // There should be a message for SO_TIMESTAMP. - char cmsgbuf[CMSG_SPACE(sizeof(struct timeval))]; - msghdr msg = {}; - iovec iov = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = cmsgbuf; - msg.msg_controllen = sizeof(cmsgbuf); - ASSERT_THAT(RetryEINTR(recvmsg)(s_, &msg, 0), SyscallSucceedsWithValue(0)); - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - - // The ioctl should return the exact same values as before. - struct timeval tv2 = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv2), SyscallSucceeds()); - ASSERT_EQ(tv.tv_sec, tv2.tv_sec); - ASSERT_EQ(tv.tv_usec, tv2.tv_usec); -} - INSTANTIATE_TEST_SUITE_P(AllInetTests, UdpSocketTest, ::testing::Values(AddressFamily::kIpv4, AddressFamily::kIpv6, |