src/conn_switch.c

   1 /*  Monkey HTTP Daemon
   2  *  ------------------
   3  *  Copyright (C) 2008, Eduardo Silva P.
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU Library General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "monkey.h"
  21 #include "http.h"
  22 #include "conn_switch.h"
  23 #include <string.h>
  24 #include <stdio.h>
  25
  26 int mk_conn_switch_read(int socket)
  27 {
  28         int ret;
  29
  30         ret = mk_handler_read(socket);
  31         return ret;
  32 }
  33
  34 int mk_conn_switch_write(int socket)
  35 {
  36         int ret=-1, ka, efd;
  37         struct client_request *cr;
  38
  39         /* Get node from schedule list node which contains
  40          * the information regarding to the current client/socket
  41          */
  42         cr = mk_get_client_request_from_fd(socket);
  43
  44         if(!cr)
  45         {
  46                 return -1;
  47         }
  48
  49         ret = mk_handler_write(socket, cr);
  50         ka = mk_http_keepalive_check(socket, cr);
  51
  52         /* if ret < 0, means that some error
  53          * happened in the writer call, in the
  54          * other hand, 0 means a successful request
  55          * processed, if ret > 0 means that some data
  56          * still need to be send.
  57          */
  58
  59         if(ret <= 0)
  60         {
  61                 free_list_requests(cr);
  62
  63                 /* We need to ask to http_keepalive if this
  64                  * connection can continue working or we must
  65                  * close it.
  66                  */
  67
  68                 if(ka<0)
  69                 {
  70                         mk_remove_client_request(socket);
  71                         return -1;
  72                 }
  73                 else{
  74                         memset(cr->body, '\0', sizeof(cr->body));
  75                         cr->body_length = 0;
  76                         cr->counter_connections++;
  77                         efd = mk_sched_get_thread_poll();
  78                         mk_epoll_socket_change_mode(efd, socket, MK_EPOLL_READ);
  79                         return 0;
  80                 }
  81         }
  82         else if(ret > 0)
  83         {
  84                 return 0;
  85         }
  86
  87         /* avoid to make gcc cry :_( */
  88         return -1;
  89 }
  90
  91 int mk_conn_switch(int action, int socket)
  92 {
  93         int status=-1;
  94
  95         switch(action)
  96         {
  97                 case MK_CONN_SWITCH_READ:
  98                         status = mk_conn_switch_read(socket);
  99                         break;
 100                 case MK_CONN_SWITCH_WRITE:
 101                         status = mk_conn_switch_write(socket);
 102                         break;
 103         }
 104
 105         return status;
 106 }
 107
 108