net/unittest/inet_stream.cc

/*
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*/
#include <gtest/gtest.h>
#include <system_error>
#include <future>
#include <sstream>
#include <chrono>
#include <thread>
 
#include <util/event.h>
#include <util/poller.h>
#include <net/inet.h>
#include <util/iostream.h>
#include <util/logger.h>
 
using std::cout;
using std::endl;
using std::string;
using std::stringstream;
using std::ios;
using scc::util::IoStream;
using scc::util::Logger;
using scc::util::Event;
using scc::util::Poller;
using scc::net::InetAddr;
using scc::net::InetTcpSock;
 
struct InetServerStreamTest : public testing::Test
{
    Event startev, quitev;
    InetTcpSock ssock, csock;
    InetAddr caddr, saddr;
    Logger log;
 
    InetServerStreamTest()
    {
        log.add_cout();
        log.max_line(2048);
        saddr.host("::");
        saddr.port(9876);
        ssock.reuse_addr(true);
        ssock.bind(saddr);
        caddr.host("::1");
        caddr.port(9876);
    }
    virtual ~InetServerStreamTest()
    {
    }
 
    static void set_all_polls(Poller& p, int fd)
    {
        p.set(fd, Poller::PollFlag::input|Poller::PollFlag::output|Poller::PollFlag::read_hup|Poller::PollFlag::priority);
    }
    static std::string str_polls(int ev)
    {
        stringstream s;
        if (ev & Poller::PollFlag::input)       s << " input";
        if (ev & Poller::PollFlag::output)      s << " output";
        if (ev & Poller::PollFlag::read_hup)    s << " read_hup";
        if (ev & Poller::PollFlag::priority)    s << " priority";
        if (ev & Poller::PollFlag::hup)         s << " hup";
        if (ev & Poller::PollFlag::error)       s << " error";
        return s.str();
    }
 
    static std::string server(InetTcpSock& sock, Event& start, Event& quit)
    {
        using scc::util::Poller;
        Logger log;
        log.add_cout();
        log.id("*serv*");
 
        stringstream s;
 
        try
        {
            sock.listen();
            log << "signal start" << endl;
            start.write(1);
 
            Poller p;
            p.set(quit, Poller::PollFlag::input);
            set_all_polls(p, sock);
 
            //sock.non_blocking(true);
            //error_code ec;
 
            log << "poll before accept" << endl;
            s << "*accept_poll:";
            while (1)
            {
                p.wait();
                if (p.event(quit))
                {
                    log << "quit event" << endl;
                    s << " quit";
                    return s.str();
                }
                
                int ev = p.event(sock);
                
                if (ev & ~Poller::PollFlag::output)
                {
                    cout << "sock events: " << str_polls(ev) << endl;
                    s << str_polls(ev);
                }
                
                if (ev & Poller::PollFlag::input)       break;
            }
 
            log << "calling accept" << endl;
            InetAddr from;
            auto conn = sock.accept(from);
            log << "connect from " << from << endl;
 
            IoStream st(conn, conn);
            st.exceptions(ios::failbit);        // throw on eof or bad
            try
            {
                set_all_polls(p, conn);
                while (1)
                {
                    s << " *conn_read_poll:";
                    while (1)
                    {
                        p.wait();
                        if (p.event(quit))
                        {
                            log << "quit event" << endl;
                            s << " quit";
                            return s.str();
                        }
 
                        int ev = p.event(conn);
                        if (ev & ~Poller::PollFlag::output)
                        {
                            cout << "conn events: " << str_polls(ev) << endl;
                            s << " *conn_ev:" << str_polls(ev);
                        }
 
                        if (ev & Poller::PollFlag::read_hup)
                        {
                            log << "connection sock peer hung up" << endl;
                            s << " *conn_peer_hup";
                            return s.str();
                        }
 
                        if (ev & Poller::PollFlag::input)       break;
                    }
 
                    log << "getline waiting" << endl;
                    string got;
                    if (!std::getline(st, got))
                    {
                        log << "getline returned failed" << endl;
                        s << " *getline_failed";
                        return s.str();
                    }
                    log << "got=" << got << endl;
 
                    s << " *conn_write_poll:";
                    while (1)
                    {
                        p.wait();
                        if (p.event(quit))
                        {
                            log << "quit event" << endl;
                            s << " quit";
                            return s.str();
                        }
 
                        int ev = p.event(conn);
                        if (ev & ~Poller::PollFlag::input)
                        {
                            cout << "conn events: " << str_polls(ev) << endl;
                            s << " *conn_ev:" << str_polls(ev);
                        }
 
                        if (ev & Poller::PollFlag::read_hup)
                        {
                            log << "connection sock peer hung up" << endl;
                            s << " *conn_peer_hup";
                            return s.str();
                        }
 
                        if (ev & Poller::PollFlag::output)      break;
                    }
 
                    st << got << endl;
                    if (got == "quit")
                    {
                        log << "getline stream got quit" << endl;
                        s << " *getline_quit";
                        return s.str();
                    }
                }
                log << "returned from stream loop" << endl;
                s << " *stream_loop_returned";
            }
            catch (const std::exception& e)
            {
                log << "stream exception: " << e.what() << endl;
 
                if (st.eof())
                {
                    log << "stream eof" << endl;
                    s << " *stream_eof";
                }
                if (st.bad())
                {
                    log << "stream eof" << endl;
                    s << " *stream_bad";
                }
                if (st.send_fail().size())
                {
                    log << "stream send failmsg=" << st.send_fail() << endl;
                    s << " *stream_send_fail=" << st.send_fail();
                }
                if (st.recv_fail().size())
                {
                    log << "stream recv failmsg=" << st.recv_fail() << endl;
                    s << " *stream_recv_fail=" << st.recv_fail();
                }
                return s.str();
            }
        }
        catch (const std::exception& e)
        {
            log << "pre-accept ex: " << e.what() << endl;
            start.write(1);
            return s.str()+" ex="+e.what();
        }
        start.write(1);
        return s.str();
    }
 
    void clientstart()
    {
        log << "wait for start" << endl;
        startev.read();
 
        //this_thread::sleep_for(chrono::milliseconds(100));
 
        log << "connect to " << endl;
        csock.connect(caddr);
    }
};
 
TEST_F(InetServerStreamTest, send_quit)
{
    log.id("send quit and recv");
 
    auto fut = async(server, std::ref(ssock), std::ref(startev), std::ref(quitev));
 
    clientstart();
 
    IoStream st(csock, csock);
 
    st << "quit" << endl;
    string got;
    getline(st, got);
    log << "got=" << got << endl;
 
    auto ret = fut.get();
    log << "server response: " << ret << endl;
}
 
TEST_F(InetServerStreamTest, reset)
{
    log.id("send recv and reset");
 
    auto fut = async(server, std::ref(ssock), std::ref(startev), std::ref(quitev));
 
    clientstart();
 
    csock.reset();
 
    auto ret = fut.get();
    log << "server response: " << ret << endl;
}
 
TEST_F(InetServerStreamTest, send_and_reset_clientsock)
{
    log.id("send recv and reset client socket");
 
    auto fut = async(server, std::ref(ssock), std::ref(startev), std::ref(quitev));
 
    clientstart();
 
    IoStream st(csock, csock);
 
    st << "don't quit" << endl;
    string got;
    getline(st, got);
    log << "got=" << got << endl;
 
    csock.reset();
 
    auto ret = fut.get();
    log << "server response: " << ret << endl;
}
 
TEST_F(InetServerStreamTest, quit)
{
    log.id("send recv and reset");
 
    auto fut = async(server, std::ref(ssock), std::ref(startev), std::ref(quitev));
 
    log << "wait for start" << endl;
    startev.read();
 
    quitev.write(1);
 
    auto ret = fut.get();
    log << "server response: " << ret << endl;
}