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#include "gtest/gtest.h"
#include "test_env.h"
#include <thread>
#include "srt.h"
class TestMuxer
: public srt::Test
{
protected:
TestMuxer()
{
// initialization code here
}
~TestMuxer()
{
// cleanup any pending stuff, but no exceptions allowed
}
protected:
// SetUp() is run immediately before a test starts.
void setup() override
{
m_caller_sock = srt_create_socket();
ASSERT_NE(m_caller_sock, SRT_ERROR);
m_server_pollid = srt_epoll_create();
ASSERT_NE(SRT_ERROR, m_server_pollid);
m_client_pollid = srt_epoll_create();
ASSERT_NE(SRT_ERROR, m_client_pollid);
int yes = 1;
int no = 0;
ASSERT_NE(srt_setsockopt(m_caller_sock, 0, SRTO_SNDSYN, &no, sizeof no), SRT_ERROR); // for async connect
ASSERT_NE(srt_setsockflag(m_caller_sock, SRTO_SENDER, &yes, sizeof yes), SRT_ERROR);
ASSERT_NE(srt_setsockopt(m_caller_sock, 0, SRTO_TSBPDMODE, &yes, sizeof yes), SRT_ERROR);
int epoll_out = SRT_EPOLL_OUT;
srt_epoll_add_usock(m_client_pollid, m_caller_sock, &epoll_out);
}
void teardown() override
{
// Code here will be called just after the test completes.
// OK to throw exceptions from here if needed.
srt_epoll_release(m_client_pollid);
srt_epoll_release(m_server_pollid);
srt_close(m_listener_sock_ipv4);
srt_close(m_listener_sock_ipv6);
}
public:
void ClientThread()
{
sockaddr_in sa;
memset(&sa, 0, sizeof sa);
sa.sin_family = AF_INET;
sa.sin_port = htons(m_listen_port);
ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &sa.sin_addr), 1);
ASSERT_NE(srt_connect(m_caller_sock, (sockaddr*)&sa, sizeof sa), SRT_ERROR);
// Socket readiness for connection is checked by polling on WRITE allowed sockets.
{
int rlen = 2;
SRTSOCKET read[2];
int wlen = 2;
SRTSOCKET write[2];
ASSERT_NE(srt_epoll_wait(m_client_pollid, read, &rlen,
write, &wlen,
-1, // -1 is set for debuging purpose.
// in case of production we need to set appropriate value
0, 0, 0, 0), SRT_ERROR);
ASSERT_EQ(rlen, 0); // get exactly one write event without reads
ASSERT_EQ(wlen, 1); // get exactly one write event without reads
ASSERT_EQ(write[0], m_caller_sock); // for our client socket
}
char buffer[1316] = {1, 2, 3, 4};
ASSERT_NE(srt_sendmsg(m_caller_sock, buffer, sizeof buffer,
-1, // infinit ttl
true // in order must be set to true
), SRT_ERROR);
}
protected:
SRTSOCKET m_caller_sock;
SRTSOCKET m_listener_sock_ipv4;
SRTSOCKET m_listener_sock_ipv6;
int m_client_pollid = SRT_ERROR;
int m_server_pollid = SRT_ERROR;
const int m_listen_port = 4200;
};
TEST_F(TestMuxer, IPv4_and_IPv6)
{
SRTST_REQUIRES(IPv6);
int yes = 1;
int no = 0;
// 1. Create IPv4 listening socket
m_listener_sock_ipv4 = srt_create_socket();
ASSERT_NE(m_listener_sock_ipv4, SRT_ERROR);
ASSERT_NE(srt_setsockopt(m_listener_sock_ipv4, 0, SRTO_RCVSYN, &no, sizeof no), SRT_ERROR); // for async connect
ASSERT_NE(srt_setsockopt(m_listener_sock_ipv4, 0, SRTO_TSBPDMODE, &yes, sizeof yes), SRT_ERROR);
// 2. Add the IPv4 socket to epoll
int epoll_in = SRT_EPOLL_IN;
srt_epoll_add_usock(m_server_pollid, m_listener_sock_ipv4, &epoll_in);
// 3. Bind to IPv4 address.
sockaddr_in sa;
memset(&sa, 0, sizeof sa);
sa.sin_family = AF_INET;
sa.sin_port = htons(m_listen_port);
ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &sa.sin_addr), 1);
ASSERT_NE(srt_bind(m_listener_sock_ipv4, (sockaddr*)&sa, sizeof sa), SRT_ERROR);
ASSERT_NE(srt_listen(m_listener_sock_ipv4, SOMAXCONN), SRT_ERROR);
// 4. Create IPv6 socket bound to the same port as IPv4 socket
m_listener_sock_ipv6 = srt_create_socket();
ASSERT_NE(m_listener_sock_ipv6, SRT_ERROR);
sockaddr_in6 sa_v6;
memset(&sa_v6, 0, sizeof sa_v6);
sa_v6.sin6_family = AF_INET6;
sa_v6.sin6_port = htons(m_listen_port);
ASSERT_EQ(inet_pton(AF_INET6, "::1", &sa_v6.sin6_addr), 1);
// Set the IPv6only flag for the socket that should be bound to the same port
// as another socket binding to IPv4 address, otherwise the binding may fail,
// depending on the current value of IPV6ONLY option.
ASSERT_EQ(srt_setsockflag(m_listener_sock_ipv6, SRTO_IPV6ONLY, &yes, sizeof yes), 0);
ASSERT_NE(srt_bind(m_listener_sock_ipv6, (sockaddr*)&sa_v6, sizeof(sa_v6)), SRT_ERROR);
std::thread client(&TestMuxer::ClientThread, this);
{ // wait for connection from client
int rlen = 2;
SRTSOCKET read[2];
int wlen = 2;
SRTSOCKET write[2];
ASSERT_NE(srt_epoll_wait(m_server_pollid,
read, &rlen,
write, &wlen,
-1, // -1 is set for debuging purpose.
// in case of production we need to set appropriate value
0, 0, 0, 0), SRT_ERROR );
ASSERT_EQ(rlen, 1); // get exactly one read event without writes
ASSERT_EQ(read[0], m_listener_sock_ipv4) << "Read event on wrong socket";
}
sockaddr_storage scl;
int sclen = sizeof scl;
SRTSOCKET accepted_sock = srt_accept(m_listener_sock_ipv4, (sockaddr*)&scl, &sclen);
ASSERT_NE(accepted_sock, SRT_INVALID_SOCK);
srt_epoll_add_usock(m_server_pollid, accepted_sock, &epoll_in); // wait for input
char buffer[1316];
{ // wait for 1316 packet from client
int rlen = 2;
SRTSOCKET read[2];
int wlen = 2;
SRTSOCKET write[2];
ASSERT_NE(srt_epoll_wait(m_server_pollid,
read, &rlen,
write, &wlen,
-1, // -1 is set for debuging purpose.
// in case of production we need to set appropriate value
0, 0, 0, 0), SRT_ERROR );
ASSERT_EQ(rlen, 1); // get exactly one read event without writes
//ASSERT_EQ(wlen, 0); // get exactly one read event without writes
ASSERT_EQ(read[0], accepted_sock); // read event is for bind socket
}
char pattern[4] = {1, 2, 3, 4};
ASSERT_EQ(srt_recvmsg(accepted_sock, buffer, sizeof buffer), 1316);
ASSERT_EQ(memcmp(pattern, buffer, 4), 0);
srt_close(accepted_sock);
client.join();
}
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