110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
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/* -----------------------------------------------------------------------------
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* connections.h
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*
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* iPDC - Phasor Data Concentrator
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*
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* Copyright (C) 2011 Nitesh Pandit
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* Copyright (C) 2011 Kedar V. Khandeparkar
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* Authors:
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* Nitesh Pandit <panditnitesh@gmail.com>
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* Kedar V. Khandeparkar <kedar.khandeparkar@gmail.com>
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*
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* ----------------------------------------------------------------------------- */
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#include <netinet/in.h>
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#include <signal.h>
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/* ---------------------------------------------------------------- */
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/* global variable */
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/* ---------------------------------------------------------------- */
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#define DBPORT 9000 /* The port users will be connecting to */
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#define BACKLOG 10 /* How many pending connections queue will hold */
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#define MAXBUFLEN 2000
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int UL_UDP_addr_len,UL_TCP_sin_size, numbytes;
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unsigned char UL_udp_command[19];
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unsigned char UL_tcp_command[19];
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/* ---------------------------------------------------------------- */
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/* global Data Structure */
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/* ---------------------------------------------------------------- */
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struct sigaction sa;
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struct Lower_Layer_Details {
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unsigned int pmuid;
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char ip[16];
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int port;
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char protocol[4];
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int sockfd;
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int up; /* used only in tcp */
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struct sockaddr_in llpmu_addr;
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pthread_t thread_id;
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int data_transmission_off;
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int pmu_remove;
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int request_cfg_frame;
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struct Lower_Layer_Details *next;
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struct Lower_Layer_Details *prev;
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}*LLfirst,*LLlast;
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struct Upper_Layer_Details {
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char ip[16];
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int port;
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char protocol[4];
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int sockfd;
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int tcpup;
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pthread_t thread_id;
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struct sockaddr_in pdc_addr;
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int config_change;
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int UL_upper_pdc_cfgsent;
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int UL_data_transmission_off;
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int address_set;
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struct Upper_Layer_Details *next;
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struct Upper_Layer_Details *prev;
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}*ULfirst,*ULlast;
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/* ---------------------------------------------------------------- */
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/* Function prototypes */
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/* ---------------------------------------------------------------- */
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void setup();
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void* UL_tcp();
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void* UL_tcp_connection(void * newfd);
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void* UL_udp();
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void PMU_process_UDP(unsigned char *,struct sockaddr_in,int sockfd);
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void PMU_process_TCP(unsigned char tcp_buffer[],int sockfd);
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void sigchld_handler(int s); /* TCP signal handler */
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/**************************************** End of File *******************************************************/
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