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socket_join_multicast_group_test.cc
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socket_join_multicast_group_test.cc
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// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <unistd.h>
#include "starboard/common/socket.h"
#include "starboard/common/time.h"
#include "starboard/nplb/socket_helpers.h"
#include "starboard/thread.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace starboard {
namespace nplb {
namespace {
SbSocket CreateMulticastSocket(const SbSocketAddress& address) {
SbSocket socket =
SbSocketCreate(kSbSocketAddressTypeIpv4, kSbSocketProtocolUdp);
EXPECT_TRUE(SbSocketIsValid(socket));
EXPECT_TRUE(SbSocketSetReuseAddress(socket, true));
// It will choose a port for me.
SbSocketAddress bind_address =
GetUnspecifiedAddress(kSbSocketAddressTypeIpv4, 0);
EXPECT_EQ(kSbSocketOk, SbSocketBind(socket, &bind_address));
EXPECT_TRUE(SbSocketJoinMulticastGroup(socket, &address));
return socket;
}
SbSocket CreateSendSocket() {
SbSocket socket =
SbSocketCreate(kSbSocketAddressTypeIpv4, kSbSocketProtocolUdp);
EXPECT_TRUE(SbSocketIsValid(socket));
EXPECT_TRUE(SbSocketSetReuseAddress(socket, true));
return socket;
}
TEST(SbSocketJoinMulticastGroupTest, SunnyDay) {
// "224.0.2.0" is an unassigned ad-hoc multicast address. Hopefully no one is
// spamming it on the local network.
// http://www.iana.org/assignments/multicast-addresses/multicast-addresses.xhtml
SbSocketAddress address = GetUnspecifiedAddress(kSbSocketAddressTypeIpv4, 0);
address.address[0] = 224;
address.address[2] = 2;
SbSocket send_socket = CreateSendSocket();
SbSocket receive_socket = CreateMulticastSocket(address);
// Get the bound port.
SbSocketAddress local_address = {0};
SbSocketGetLocalAddress(receive_socket, &local_address);
address.port = local_address.port;
const char kBuf[] = "01234567890123456789";
char buf[SB_ARRAY_SIZE(kBuf)] = {0};
while (true) {
int sent =
SbSocketSendTo(send_socket, kBuf, SB_ARRAY_SIZE_INT(kBuf), &address);
if (sent < 0) {
SbSocketError error = SbSocketGetLastError(send_socket);
if (error == kSbSocketPending) {
continue;
}
// Clean up the sockets.
EXPECT_TRUE(SbSocketDestroy(send_socket));
EXPECT_TRUE(SbSocketDestroy(receive_socket));
FAIL() << "Failed to send multicast packet: " << error;
return;
}
EXPECT_EQ(SB_ARRAY_SIZE_INT(kBuf), sent);
break;
}
SbSocketAddress receive_address;
int64_t stop_time = CurrentMonotonicTime() + 1'000'000LL;
while (true) {
// Breaks the case where the test will hang in a loop when
// SbSocketReceiveFrom() always returns kSbSocketPending.
ASSERT_LE(CurrentMonotonicTime(), stop_time) << "Multicast timed out.";
int received = SbSocketReceiveFrom(
receive_socket, buf, SB_ARRAY_SIZE_INT(buf), &receive_address);
if (received < 0 &&
SbSocketGetLastError(receive_socket) == kSbSocketPending) {
usleep(1000);
continue;
}
EXPECT_EQ(SB_ARRAY_SIZE_INT(kBuf), received);
break;
}
for (int i = 0; i < SB_ARRAY_SIZE_INT(kBuf); ++i) {
EXPECT_EQ(kBuf[i], buf[i]) << "position " << i;
}
EXPECT_TRUE(SbSocketDestroy(send_socket));
EXPECT_TRUE(SbSocketDestroy(receive_socket));
}
TEST(SbSocketJoinMulticastGroupTest, RainyDayInvalidSocket) {
SbSocketAddress address = GetUnspecifiedAddress(kSbSocketAddressTypeIpv4, 0);
EXPECT_FALSE(SbSocketJoinMulticastGroup(kSbSocketInvalid, &address));
}
TEST(SbSocketJoinMulticastGroupTest, RainyDayInvalidAddress) {
SbSocket socket =
SbSocketCreate(kSbSocketAddressTypeIpv4, kSbSocketProtocolUdp);
ASSERT_TRUE(SbSocketIsValid(socket));
EXPECT_FALSE(SbSocketJoinMulticastGroup(socket, NULL));
EXPECT_TRUE(SbSocketDestroy(socket));
}
} // namespace
} // namespace nplb
} // namespace starboard