metaproxy_1::Pipe Class Reference

#include <pipe.hpp>

Collaboration diagram for metaproxy_1::Pipe:

Classes
class	Error
class	Rep

Public Member Functions
	Pipe (int port_to_use)
	~Pipe ()
int &	read_fd () const
int &	write_fd () const

Private Attributes
boost::scoped_ptr< Rep >	m_p

Detailed Description

Definition at line 29 of file pipe.hpp.

Constructor & Destructor Documentation

Pipe::Pipe

(

int

port_to_use

)

Definition at line 108 of file pipe.cpp.

References m_p.

                          : m_p(new Rep)
{
#ifdef WIN32
    WSADATA wsaData;
    WORD wVersionRequested = MAKEWORD(2, 0);
    if (WSAStartup( wVersionRequested, &wsaData ))
        throw Pipe::Error("WSAStartup failed");
#else
    port_to_use = 0;  // we'll just use pipe on Unix
#endif
    if (port_to_use)
    {
        // create server socket
        m_p->m_socket = socket(AF_INET, SOCK_STREAM, 0);
        if (m_p->m_socket < 0)
            throw Pipe::Error("could not create socket");
#ifndef WIN32
        unsigned long one = 1;
        if (setsockopt(m_p->m_socket, SOL_SOCKET, SO_REUSEADDR, (char*)
                       &one, sizeof(one)) < 0)
            throw Pipe::Error("setsockopt error");
#endif
        // bind server socket
        struct sockaddr_in add;
        add.sin_family = AF_INET;
        add.sin_port = htons(port_to_use);
        add.sin_addr.s_addr = INADDR_ANY;
        struct sockaddr *addr = ( struct sockaddr *) &add;

        if (bind(m_p->m_socket, addr, sizeof(struct sockaddr_in)))
            throw Pipe::Error("could not bind on socket");

        if (listen(m_p->m_socket, 3) < 0)
            throw Pipe::Error("could not listen on socket");

        // client socket
        unsigned int tmpadd;
        tmpadd = (unsigned) inet_addr("127.0.0.1");
        if (tmpadd)
            memcpy(&add.sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
        else
            throw Pipe::Error("inet_addr failed");

        m_p->m_fd[1] = socket(AF_INET, SOCK_STREAM, 0);
        if (m_p->m_fd[1] < 0)
            throw Pipe::Error("could not create socket");

        m_p->nonblock(m_p->m_fd[1]);

        if (connect(m_p->m_fd[1], addr, sizeof(*addr)) < 0)
        {
#ifdef WIN32
            if (WSAGetLastError() != WSAEWOULDBLOCK)
                throw Pipe::Error("could not connect to socket");
#else
            if (errno != EINPROGRESS)
                throw Pipe::Error("could not connect to socket");
#endif
        }

        // server accept
        struct sockaddr caddr;
#ifdef WIN32
        int caddr_len = sizeof(caddr);
#else
        socklen_t caddr_len = sizeof(caddr);
#endif
        m_p->m_fd[0] = accept(m_p->m_socket, &caddr, &caddr_len);
        if (m_p->m_fd[0] < 0)
            throw Pipe::Error("could not accept on socket");

        // complete connect
        fd_set write_set;
        FD_ZERO(&write_set);
        FD_SET(m_p->m_fd[1], &write_set);
        int r = select(m_p->m_fd[1]+1, 0, &write_set, 0, 0);
        if (r != 1)
            throw Pipe::Error("could not complete connect");

        m_p->close(m_p->m_socket);
    }
    else
    {
#ifndef WIN32
        if (pipe(m_p->m_fd))
            throw Pipe::Error("pipe failed");
        else
        {
            assert(m_p->m_fd[0] >= 0);
            assert(m_p->m_fd[1] >= 0);
        }
#endif
    }
}

Pipe::~Pipe

(

)

Definition at line 203 of file pipe.cpp.

References m_p.

{
    m_p->close(m_p->m_fd[0]);
    m_p->close(m_p->m_fd[1]);
    m_p->close(m_p->m_socket);
#ifdef WIN32
    WSACleanup();
#endif
}

Member Function Documentation

int & Pipe::read_fd

(

)

const

Definition at line 213 of file pipe.cpp.

References m_p.

{
    return m_p->m_fd[0];
}

int & Pipe::write_fd

(

)

const

Definition at line 218 of file pipe.cpp.

References m_p.

{
    return m_p->m_fd[1];
}

Member Data Documentation

boost::scoped_ptr<Rep> metaproxy_1::Pipe::m_p

private

Definition at line 42 of file pipe.hpp.

Referenced by Pipe(), read_fd(), write_fd(), and ~Pipe().

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The documentation for this class was generated from the following files:

• pipe.hpp
• pipe.cpp