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client2.c
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client2.c
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#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
#include <stdlib.h>
struct accpermission
{
uint16_t packetStart;
uint8_t clientId;
uint16_t acc_per;
uint8_t segmentno;
uint8_t length;
uint8_t technology;
unsigned long subscriberno;
uint16_t packetEnd;
};
struct accpermission reqPack;
struct accpermission recPack;
int clientSocket;
int main(){
int messageSize=0,counter=0;
int retrans=1;
int recsize;
char buffer[1024];
struct sockaddr_in serverAddr;
socklen_t addr_size;
struct timeval tv;
//Requesting subscriber details
reqPack.packetStart = 0XFFFF;
reqPack.packetEnd = 0XFFFF;
reqPack.clientId = 10;
reqPack.segmentno = 1;
reqPack.subscriberno = 4088860316; //Change phone number here
reqPack.technology=4; //Change technology here
clock_t begin;
double time_spent;
clientSocket = socket(AF_INET, SOCK_DGRAM, 0);
serverAddr.sin_family = AF_INET;
serverAddr.sin_port = htons(7891);
serverAddr.sin_addr.s_addr = inet_addr("127.0.0.1");
memset(serverAddr.sin_zero, '\0', sizeof serverAddr.sin_zero);
addr_size = sizeof serverAddr;
tv.tv_sec = 3;
tv.tv_usec = 0;
int temp = setsockopt(clientSocket, SOL_SOCKET, SO_RCVTIMEO,&tv,sizeof(tv));
printf("\nRquesting network for %u \n",reqPack.subscriberno);
sendto(clientSocket,(struct accpermission*)&reqPack,sizeof(struct accpermission),0,(struct accpermission *)&serverAddr,addr_size);
int temp1 = recvfrom(clientSocket,(struct accpermission*)&recPack,sizeof(struct accpermission),0,NULL, NULL);
if(recPack.acc_per==0XFFFB)
printf("Subscriber accepted\n");
if(recPack.acc_per==0XFFFA)
printf("Subscriber does not exist in database\n");
if(recPack.acc_per==0XFFF9)
printf("Subscriber has not paid\n");
return 0;
}