server.h File Reference

#include <stdio.h>
#include <poll.h>
#include <openssl/ssl.h>
#include "class.h"
#include "socket.h"
#include "logger.h"
#include "stream.h"

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Data Structures
struct	conns

Functions
	CLASS (Server)
void	serverRun (Server this)

Detailed Description

Server class. Handles acceptance and closing of connection and uses a class that has to implement the stream reader and writer interface to handle incoming reads and outgoing writes.

Author

Georg Hopp

Copyright

Copyright © 2012 Georg Hopp

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file server.h.

---

Data Structure Documentation

struct conns

Definition at line 39 of file server.h.

Collaboration diagram for conns:

Data Fields
Sock	sock
Stream	stream
void *	worker

Function Documentation

CLASS

(

Server

)

Definition at line 45 of file server.h.

References logger.

              {
    Logger          logger;
    Sock            sock;
    Sock            sockSSL;
    SSL_CTX *       ctx;
    void *          worker;

    nfds_t          nfds;
    struct pollfd * fds;
    long            max_fds;

    struct conns  * conns;
};

void serverRun

(

Server

this

)

until error or signal

handle accept

handle accept SSL

handle reads

handle writes

Definition at line 36 of file run.c.

References doShutdown, logger, LOGGER_INFO, loggerLog(), serverCloseConn(), serverHandleAccept(), serverPoll(), serverRead(), and serverWrite().

Referenced by main().

{
    int events = 0;

    loggerLog(this->logger, LOGGER_INFO, "service started");

    while (!doShutdown) //! until error or signal 
    {
        unsigned int i;

        if (0 <= events) {
            /*
             * TODO check why sometimes events is less than 0
             * There is still a misshandling here.
             */
            events = serverPoll(this);
        }

        /**
         * handle accept
         */
        if (0 != ((this->fds)[0].revents & POLLIN)) {
            while (0 < serverHandleAccept(this, 0)) {}
            events--;
        }

        if (events == 0) {
            continue;
        }

        /**
         * handle accept SSL
         */
        if (0 != ((this->fds)[1].revents & POLLIN)) {
            while (0 < serverHandleAccept(this, 1)) {}
            events--;
        }

        if (events == 0) {
            continue;
        }

        for (i=2; i < this->nfds; i++) {
            /**
             * handle reads 
             */
            if (0 != ((this->fds)[i].revents & POLLIN)) {
                ssize_t processed = serverRead(this, i);

                if (0 > processed) {
                    events--;

                    switch (processed) {
                        case -2: // close me...
                            serverCloseConn(this, i);

                        case -1: // poll me again
                            break;
                    }
                }

                if (0 < processed) {
                    (this->fds)[i].events |= POLLOUT;
                }
            }

            if (events == 0) {
                break;
            }

            /**
             * handle writes
             */
            if (0 != ((this->fds)[i].revents & POLLOUT)) {
                ssize_t remaining = serverWrite(this, i);

                if (0 >= remaining) {
                    /*
                     * 0 means queue was empty...try again next
                     * time...no need to poll again.
                     * Anyway, most likely we need to read again
                     * so lets finish this event for now.
                     */
                    events--;

                    switch (remaining) {
                        case  0: // nothing more to write stop polling
                            (this->fds)[i].events &= ~POLLOUT;
                            break;

                        case -2: // close me...
                            serverCloseConn(this, i);

                        case -1: // poll me again
                            break;
                    }
                }
            }

            if (events == 0) {
                break; // no more events to handle
            }
        }
    }
}

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