1029 lines
33 KiB
C++
1029 lines
33 KiB
C++
// Copyright 2018 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <fcntl.h>
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#include <linux/errqueue.h>
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#include <netinet/in.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include "gtest/gtest.h"
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#include "absl/base/macros.h"
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#include "absl/time/clock.h"
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#include "absl/time/time.h"
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#include "test/syscalls/linux/socket_test_util.h"
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#include "test/syscalls/linux/unix_domain_socket_test_util.h"
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#include "test/util/test_util.h"
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#include "test/util/thread_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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// The initial port to be be used on gvisor.
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constexpr int TestPort = 40000;
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// Fixture for tests parameterized by the address family to use (AF_INET and
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// AF_INET6) when creating sockets.
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class UdpSocketTest : public ::testing::TestWithParam<int> {
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protected:
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// Creates two sockets that will be used by test cases.
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void SetUp() override;
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// Closes the sockets created by SetUp().
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void TearDown() override {
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EXPECT_THAT(close(s_), SyscallSucceeds());
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EXPECT_THAT(close(t_), SyscallSucceeds());
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for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) {
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ASSERT_NO_ERRNO(FreeAvailablePort(ports_[i]));
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}
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}
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// First UDP socket.
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int s_;
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// Second UDP socket.
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int t_;
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// The length of the socket address.
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socklen_t addrlen_;
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// Initialized address pointing to loopback and port TestPort+i.
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struct sockaddr* addr_[3];
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// Initialize "any" address.
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struct sockaddr* anyaddr_;
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// Used ports.
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int ports_[3];
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private:
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// Storage for the loopback addresses.
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struct sockaddr_storage addr_storage_[3];
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// Storage for the "any" address.
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struct sockaddr_storage anyaddr_storage_;
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};
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// Gets a pointer to the port component of the given address.
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uint16_t* Port(struct sockaddr_storage* addr) {
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switch (addr->ss_family) {
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case AF_INET: {
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auto sin = reinterpret_cast<struct sockaddr_in*>(addr);
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return &sin->sin_port;
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}
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case AF_INET6: {
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auto sin6 = reinterpret_cast<struct sockaddr_in6*>(addr);
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return &sin6->sin6_port;
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}
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}
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return nullptr;
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}
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void UdpSocketTest::SetUp() {
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ASSERT_THAT(s_ = socket(GetParam(), SOCK_DGRAM, IPPROTO_UDP),
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SyscallSucceeds());
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ASSERT_THAT(t_ = socket(GetParam(), SOCK_DGRAM, IPPROTO_UDP),
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SyscallSucceeds());
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memset(&anyaddr_storage_, 0, sizeof(anyaddr_storage_));
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anyaddr_ = reinterpret_cast<struct sockaddr*>(&anyaddr_storage_);
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anyaddr_->sa_family = GetParam();
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// Initialize address-family-specific values.
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switch (GetParam()) {
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case AF_INET: {
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auto sin = reinterpret_cast<struct sockaddr_in*>(&anyaddr_storage_);
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addrlen_ = sizeof(*sin);
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sin->sin_addr.s_addr = htonl(INADDR_ANY);
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break;
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}
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case AF_INET6: {
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auto sin6 = reinterpret_cast<struct sockaddr_in6*>(&anyaddr_storage_);
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addrlen_ = sizeof(*sin6);
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sin6->sin6_addr = in6addr_any;
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break;
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}
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}
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if (gvisor::testing::IsRunningOnGvisor()) {
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for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) {
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ports_[i] = TestPort + i;
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}
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} else {
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// When not under gvisor, use utility function to pick port. Assert that
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// all ports are different.
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std::string error;
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for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) {
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// Find an unused port, we specify port 0 to allow the kernel to provide
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// the port.
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bool unique = true;
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do {
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ports_[i] = ASSERT_NO_ERRNO_AND_VALUE(PortAvailable(
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0, AddressFamily::kDualStack, SocketType::kUdp, false));
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ASSERT_GT(ports_[i], 0);
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for (size_t j = 0; j < i; ++j) {
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if (ports_[j] == ports_[i]) {
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unique = false;
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break;
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}
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}
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} while (!unique);
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}
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}
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// Initialize the sockaddrs.
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for (size_t i = 0; i < ABSL_ARRAYSIZE(addr_); ++i) {
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memset(&addr_storage_[i], 0, sizeof(addr_storage_[i]));
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addr_[i] = reinterpret_cast<struct sockaddr*>(&addr_storage_[i]);
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addr_[i]->sa_family = GetParam();
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switch (GetParam()) {
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case AF_INET: {
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auto sin = reinterpret_cast<struct sockaddr_in*>(addr_[i]);
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sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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sin->sin_port = htons(ports_[i]);
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break;
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}
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case AF_INET6: {
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auto sin6 = reinterpret_cast<struct sockaddr_in6*>(addr_[i]);
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sin6->sin6_addr = in6addr_loopback;
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sin6->sin6_port = htons(ports_[i]);
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break;
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}
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}
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}
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}
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TEST_P(UdpSocketTest, Creation) {
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int s_;
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ASSERT_THAT(s_ = socket(GetParam(), SOCK_DGRAM, IPPROTO_UDP),
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SyscallSucceeds());
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EXPECT_THAT(close(s_), SyscallSucceeds());
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ASSERT_THAT(s_ = socket(GetParam(), SOCK_DGRAM, 0), SyscallSucceeds());
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EXPECT_THAT(close(s_), SyscallSucceeds());
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ASSERT_THAT(s_ = socket(GetParam(), SOCK_STREAM, IPPROTO_UDP),
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SyscallFails());
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}
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TEST_P(UdpSocketTest, Getsockname) {
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// Check that we're not bound.
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struct sockaddr_storage addr;
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socklen_t addrlen = sizeof(addr);
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EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen),
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SyscallSucceeds());
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EXPECT_EQ(addrlen, addrlen_);
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EXPECT_EQ(memcmp(&addr, anyaddr_, addrlen_), 0);
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// Bind, then check that we get the right address.
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ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds());
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addrlen = sizeof(addr);
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EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen),
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SyscallSucceeds());
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EXPECT_EQ(addrlen, addrlen_);
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EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0);
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}
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TEST_P(UdpSocketTest, Getpeername) {
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// Check that we're not connected.
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struct sockaddr_storage addr;
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socklen_t addrlen = sizeof(addr);
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EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen),
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SyscallFailsWithErrno(ENOTCONN));
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// Connect, then check that we get the right address.
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ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds());
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addrlen = sizeof(addr);
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EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen),
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SyscallSucceeds());
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EXPECT_EQ(addrlen, addrlen_);
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EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0);
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}
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TEST_P(UdpSocketTest, SendNotConnected) {
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// Do send & write, they must fail.
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char buf[512];
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EXPECT_THAT(send(s_, buf, sizeof(buf), 0),
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SyscallFailsWithErrno(EDESTADDRREQ));
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EXPECT_THAT(write(s_, buf, sizeof(buf)), SyscallFailsWithErrno(EDESTADDRREQ));
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// Use sendto.
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ASSERT_THAT(sendto(s_, buf, sizeof(buf), 0, addr_[0], addrlen_),
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SyscallSucceedsWithValue(sizeof(buf)));
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// Check that we're bound now.
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struct sockaddr_storage addr;
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socklen_t addrlen = sizeof(addr);
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EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen),
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SyscallSucceeds());
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EXPECT_EQ(addrlen, addrlen_);
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EXPECT_NE(*Port(&addr), 0);
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}
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TEST_P(UdpSocketTest, ConnectBinds) {
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// Connect the socket.
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ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds());
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// Check that we're bound now.
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struct sockaddr_storage addr;
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socklen_t addrlen = sizeof(addr);
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EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen),
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SyscallSucceeds());
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EXPECT_EQ(addrlen, addrlen_);
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EXPECT_NE(*Port(&addr), 0);
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}
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TEST_P(UdpSocketTest, ReceiveNotBound) {
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char buf[512];
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EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT),
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SyscallFailsWithErrno(EWOULDBLOCK));
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}
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TEST_P(UdpSocketTest, Bind) {
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ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds());
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// Try to bind again.
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EXPECT_THAT(bind(s_, addr_[1], addrlen_), SyscallFailsWithErrno(EINVAL));
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// Check that we're still bound to the original address.
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struct sockaddr_storage addr;
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socklen_t addrlen = sizeof(addr);
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EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen),
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SyscallSucceeds());
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EXPECT_EQ(addrlen, addrlen_);
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EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0);
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}
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TEST_P(UdpSocketTest, BindInUse) {
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ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds());
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// Try to bind again.
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EXPECT_THAT(bind(t_, addr_[0], addrlen_), SyscallFailsWithErrno(EADDRINUSE));
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}
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TEST_P(UdpSocketTest, ReceiveAfterConnect) {
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// Connect s_ to loopback:TestPort, and bind t_ to loopback:TestPort.
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ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds());
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ASSERT_THAT(bind(t_, addr_[0], addrlen_), SyscallSucceeds());
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// Get the address s_ was bound to during connect.
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struct sockaddr_storage addr;
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socklen_t addrlen = sizeof(addr);
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EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen),
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SyscallSucceeds());
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EXPECT_EQ(addrlen, addrlen_);
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// Send from t_ to s_.
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char buf[512];
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RandomizeBuffer(buf, sizeof(buf));
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ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0,
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reinterpret_cast<sockaddr*>(&addr), addrlen),
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SyscallSucceedsWithValue(sizeof(buf)));
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// Receive the data.
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char received[512];
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EXPECT_THAT(recv(s_, received, sizeof(received), 0),
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SyscallSucceedsWithValue(sizeof(received)));
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EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0);
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}
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TEST_P(UdpSocketTest, Connect) {
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ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds());
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// Check that we're connected to the right peer.
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struct sockaddr_storage peer;
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socklen_t peerlen = sizeof(peer);
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EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen),
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SyscallSucceeds());
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EXPECT_EQ(peerlen, addrlen_);
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EXPECT_EQ(memcmp(&peer, addr_[0], addrlen_), 0);
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// Try to bind after connect.
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EXPECT_THAT(bind(s_, addr_[1], addrlen_), SyscallFailsWithErrno(EINVAL));
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// Try to connect again.
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EXPECT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds());
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// Check that peer name changed.
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peerlen = sizeof(peer);
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EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen),
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SyscallSucceeds());
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EXPECT_EQ(peerlen, addrlen_);
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EXPECT_EQ(memcmp(&peer, addr_[2], addrlen_), 0);
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}
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TEST_P(UdpSocketTest, SendToAddressOtherThanConnected) {
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ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds());
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// Send to a different destination than we're connected to.
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char buf[512];
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EXPECT_THAT(sendto(s_, buf, sizeof(buf), 0, addr_[1], addrlen_),
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SyscallSucceedsWithValue(sizeof(buf)));
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}
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TEST_P(UdpSocketTest, ZerolengthWriteAllowed) {
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// Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1.
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ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds());
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ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds());
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// Bind t_ to loopback:TestPort+1.
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ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds());
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char buf[3];
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// Send zero length packet from s_ to t_.
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ASSERT_THAT(write(s_, buf, 0), SyscallSucceedsWithValue(0));
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// Receive the packet.
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char received[3];
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EXPECT_THAT(read(t_, received, sizeof(received)),
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SyscallSucceedsWithValue(0));
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}
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TEST_P(UdpSocketTest, ZerolengthWriteAllowedNonBlockRead) {
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// Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1.
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ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds());
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ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds());
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// Bind t_ to loopback:TestPort+1.
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ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds());
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// Set t_ to non-blocking.
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int opts = 0;
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ASSERT_THAT(opts = fcntl(t_, F_GETFL), SyscallSucceeds());
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ASSERT_THAT(fcntl(t_, F_SETFL, opts | O_NONBLOCK), SyscallSucceeds());
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char buf[3];
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// Send zero length packet from s_ to t_.
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ASSERT_THAT(write(s_, buf, 0), SyscallSucceedsWithValue(0));
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// Receive the packet.
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char received[3];
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EXPECT_THAT(read(t_, received, sizeof(received)),
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SyscallSucceedsWithValue(0));
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EXPECT_THAT(read(t_, received, sizeof(received)),
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SyscallFailsWithErrno(EAGAIN));
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}
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TEST_P(UdpSocketTest, SendAndReceiveNotConnected) {
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// Bind s_ to loopback.
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ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds());
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// Send some data to s_.
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char buf[512];
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RandomizeBuffer(buf, sizeof(buf));
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ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_),
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SyscallSucceedsWithValue(sizeof(buf)));
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// Receive the data.
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char received[512];
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EXPECT_THAT(recv(s_, received, sizeof(received), 0),
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SyscallSucceedsWithValue(sizeof(received)));
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EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0);
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}
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TEST_P(UdpSocketTest, SendAndReceiveConnected) {
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// Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1.
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ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds());
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ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds());
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// Bind t_ to loopback:TestPort+1.
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ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds());
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// Send some data from t_ to s_.
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char buf[512];
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RandomizeBuffer(buf, sizeof(buf));
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ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_),
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SyscallSucceedsWithValue(sizeof(buf)));
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// Receive the data.
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char received[512];
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EXPECT_THAT(recv(s_, received, sizeof(received), 0),
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SyscallSucceedsWithValue(sizeof(received)));
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EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0);
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}
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TEST_P(UdpSocketTest, ReceiveFromNotConnected) {
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// Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1.
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ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds());
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ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds());
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// Bind t_ to loopback:TestPort+2.
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ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds());
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// Send some data from t_ to s_.
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char buf[512];
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ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_),
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SyscallSucceedsWithValue(sizeof(buf)));
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// Check that the data isn't_ received because it was sent from a different
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// address than we're connected.
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EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT),
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SyscallFailsWithErrno(EWOULDBLOCK));
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}
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TEST_P(UdpSocketTest, ReceiveBeforeConnect) {
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// Bind s_ to loopback:TestPort.
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ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds());
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// Bind t_ to loopback:TestPort+2.
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ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds());
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// Send some data from t_ to s_.
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char buf[512];
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RandomizeBuffer(buf, sizeof(buf));
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ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_),
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SyscallSucceedsWithValue(sizeof(buf)));
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// Connect to loopback:TestPort+1.
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ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds());
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// Receive the data. It works because it was sent before the connect.
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char received[512];
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EXPECT_THAT(recv(s_, received, sizeof(received), 0),
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SyscallSucceedsWithValue(sizeof(received)));
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EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0);
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// Send again. This time it should not be received.
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|
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[512];
|
|
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_CASE_P(AllInetTests, UdpSocketTest,
|
|
::testing::Values(AF_INET, AF_INET6));
|
|
|
|
} // namespace
|
|
|
|
} // namespace testing
|
|
} // namespace gvisor
|