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client.cpp
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client.cpp
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#include <sys/socket.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <sys/time.h>
#include <time.h>
#include <errno.h>
#include <signal.h>
#include <poll.h>
#define RECV_DATA_SIZE 256
#define SEND_DATA_SIZE 159
char *server_ip = "192.168.0.210";
#define TCP_PORT_OUT 44818
#define UDP_PORT_OUT 2222
int udp_port_in = 2223;
int poll_period = 20;
int tcp_send_sock = 0;
int udp_recv_sock = 0;
int udp_send_sock = 0;
bool tcms_client = false;
fd_set readfds;
int max_fd = 0;
int last_hb = 0;
int unhandled = 0;
int total_unhandled = 0;
unsigned long long total_sent = 0;
unsigned long long total_received = 0;
unsigned char recv_data[RECV_DATA_SIZE] = {};
unsigned char send_data[SEND_DATA_SIZE] = \
{0x01, 0x09, 0x2C, 0x9A, 0x63, 0x36, 0xFF, 0xFF, 0x33, 0x32, 0x31, 0x5A, 0x78, 0x03, 0xFF, 0x00, \
0x46, 0x52, 0x6C, 0x4F, 0x67, 0x49, 0x6E, 0x31, 0x32, 0x33, 0x21, 0x00, 0x50, 0x77, 0x64, 0x31, \
0x32, 0x33, 0x24, 0x00, 0x00, 0x00, 0xC0, 0x04, 0x00, 0x20, 0xF1, 0x47, 0x02, 0x07, 0x03, 0x02, \
0x45, 0x4D, 0x55, 0x2D, 0x74, 0x65, 0x73, 0x74, 0x00, 0x00, 0x00, 0x00, 0x49, 0x64, 0x31, 0x32, \
0x33, 0x34, 0x35, 0x36, 0x23, 0x00, 0x00, 0x00, 0x02, 0x00, 0x78, 0x3D, 0x31, 0x2D, 0x4E, 0x62, \
0x55, 0x6E, 0x69, 0x74, 0x00, 0x00, 0x63, 0x61, 0x72, 0x30, 0x31, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x20, 0xF1, 0x47, 0x00, 0x20, 0xF1, 0x47, 0x80, 0x00, 0x1E, 0x19, 0x07, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
long long get_time_ms () {
struct timespec t ;
clock_gettime ( CLOCK_REALTIME , & t ) ;
return t.tv_sec * 1000 + ( t.tv_nsec + 500000 ) / 1000000 ;
}
int msleep(long msec)
{
struct timespec ts;
int res;
if (msec < 0)
{
errno = EINVAL;
return -1;
}
ts.tv_sec = msec / 1000;
ts.tv_nsec = (msec % 1000) * 1000000;
do {
res = nanosleep(&ts, &ts);
} while (res && errno == EINTR);
return res;
}
void print_buff(unsigned char *buf, int buf_len) {
int i = 1;
while(buf_len > 0) {
printf("0x%02x, ", *buf);
if (i % 16 == 0) {
printf("\n");
}
buf_len--;
buf++;
i++;
}
printf("\n");
}
#define SRV_REPLY_1_SIZE 28
#define SRV_REPLY_2_SIZE 54
#define SRV_REPLY_3_SIZE 229
#define SRV_REPLY_4_SIZE 203
#define SRV_REPLY_5_SIZE 90
#define REPLY_1_SIZE 28
unsigned char reply_1[REPLY_1_SIZE] = \
{ 0x65, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00
};
#define REPLY_2_SIZE 48
unsigned char reply_2[REPLY_2_SIZE] = \
{ 0x6f, 0x00, 0x18, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, \
0x00, 0x00, 0x00, 0x00, 0xb2, 0x00, 0x08, 0x00, 0x0e, 0x03, 0x20, 0x04, 0x24, 0x01, 0x30, 0x03
};
#define REPLY_3_SIZE 48
unsigned char reply_3[REPLY_3_SIZE] = \
{ 0x6f, 0x00, 0x18, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, \
0x00, 0x00, 0x00, 0x00, 0xb2, 0x00, 0x08, 0x00, 0x0e, 0x03, 0x20, 0x04, 0x24, 0x64, 0x30, 0x03
};
#define REPLY_4_SIZE 48
unsigned char reply_4[REPLY_4_SIZE] = \
{ 0x6f, 0x00, 0x18, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, \
0x00, 0x00, 0x00, 0x00, 0xb2, 0x00, 0x08, 0x00, 0x0e, 0x03, 0x20, 0x04, 0x24, 0x65, 0x30, 0x03
};
#define REPLY_5_SIZE 90
unsigned char reply_5[REPLY_5_SIZE] = \
{ 0x6f, 0x00, 0x42, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, \
0x00, 0x00, 0x00, 0x00, 0xb2, 0x00, 0x32, 0x00, 0x54, 0x02, 0x20, 0x06, 0x24, 0x01, 0x0a, 0x0a, \
0x4d, 0x01, 0x00, 0x00, 0x4e, 0x01, 0x00, 0x00, 0xbc, 0x01, 0xda, 0xfa, 0x0d, 0xf0, 0xad, 0x8b, \
0x00, 0x00, 0x00, 0x00, 0x20, 0x4e, 0x00, 0x00, 0xa5, 0x46, 0x20, 0x4e, 0x00, 0x00, 0xbb, 0x40, \
0x01, 0x04, 0x20, 0x04, 0x24, 0x01, 0x2c, 0x65, 0x2c, 0x64
};
int connect_to_server() {
tcp_send_sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
struct sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_port = htons(TCP_PORT_OUT);
addr.sin_addr.s_addr = htonl(INADDR_ANY);
inet_aton(server_ip, &(addr.sin_addr));
int res = connect(tcp_send_sock, (struct sockaddr *)&addr, sizeof(addr));
if (res == 0 && tcms_client) {
int reply_num = 1;
struct pollfd pollfds[2] = {0};
pollfds[0].fd = tcp_send_sock;
pollfds[0].events = POLLIN | POLLPRI;
send(tcp_send_sock, (char*)reply_1, REPLY_1_SIZE, 0);
while(1) {
int pollResult = poll(pollfds, 2, 5000);
if (pollResult > 0 && pollfds[0].revents & POLLIN) {
long data_len = 512;
unsigned char incoming_message[data_len] = {0};
long number_of_read_bytes = recv(tcp_send_sock, incoming_message, data_len, 0);
if (number_of_read_bytes > 0) {
printf("Received from server data len = %ld\n", number_of_read_bytes);
}
if (reply_num == 1 && number_of_read_bytes == SRV_REPLY_1_SIZE) {
print_buff(incoming_message, number_of_read_bytes);
printf("Send to server data len = %ld\n\n", send(tcp_send_sock, (char*)reply_2, REPLY_2_SIZE, 0));
reply_num++;
}
else if (reply_num == 2 && number_of_read_bytes == SRV_REPLY_2_SIZE) {
print_buff(incoming_message, number_of_read_bytes);
printf("Send to server data len = %ld\n\n", send(tcp_send_sock, (char*)reply_3, REPLY_3_SIZE, 0));
reply_num++;
}
else if (reply_num == 3 && number_of_read_bytes == SRV_REPLY_3_SIZE) {
print_buff(incoming_message, number_of_read_bytes);
printf("Send to server data len = %ld\n\n", send(tcp_send_sock, (char*)reply_4, REPLY_4_SIZE, 0));
reply_num++;
}
else if (reply_num == 4 && number_of_read_bytes == SRV_REPLY_4_SIZE) {
print_buff(incoming_message, number_of_read_bytes);
printf("Send to server data len = %ld\n\n", send(tcp_send_sock, (char*)reply_5, REPLY_5_SIZE, 0));
reply_num++;
}
else if (reply_num == 5 && number_of_read_bytes == SRV_REPLY_5_SIZE) {
print_buff(incoming_message, number_of_read_bytes);
reply_num++;
return 0;
}
}
}
}
return res;
}
int create_udp_send_socket() {
udp_send_sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
return 0;
}
void send_message() {
struct sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_port = htons(UDP_PORT_OUT);
inet_pton(AF_INET, server_ip, &(addr.sin_addr));
sendto(udp_send_sock, (char*)send_data, SEND_DATA_SIZE, 0, (struct sockaddr *)&addr, sizeof(addr));
total_sent++;
}
int create_udp_recv_socket()
{
udp_recv_sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
struct sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_port = htons(udp_port_in);
addr.sin_addr.s_addr = htonl(INADDR_ANY);
int bindResult = bind(udp_recv_sock, (struct sockaddr *)&addr, sizeof(addr));
if (bindResult == -1)
{
perror("UDP receiver bindResult");
return -1;
}
printf("UDP receiver started\n");
return udp_recv_sock;
}
void get_message()
{
struct sockaddr_in addr;
FD_ZERO(&readfds);
FD_SET(udp_recv_sock, &readfds);
max_fd = udp_recv_sock;
struct timeval g_time_value;
g_time_value.tv_sec = 0;
g_time_value.tv_usec = 10000;
int select_result = select(max_fd + 1, &readfds, 0, 0, &g_time_value);
if (select_result > 0) {
if (FD_ISSET(udp_recv_sock, &readfds))
{
addr.sin_family = AF_INET;
addr.sin_port = htons(udp_port_in);
inet_aton(server_ip, &(addr.sin_addr));
socklen_t addr_size = sizeof(addr);
int size = recvfrom(udp_recv_sock, recv_data, RECV_DATA_SIZE, 0, (struct sockaddr *)&addr, &addr_size);
if (size == -1 || size == 0)
{
printf("Closing UDP receiver\n");
udp_recv_sock = 0;
close(udp_recv_sock);
}
total_received++;
} else {
printf("Cycle client: fd not set\n");
}
}
}
int main(int argc, char *argv[])
{
if (argc < 3) {
printf("Usage: \n");
printf(" ./client <server> <poll_period> <work_as_tcms>\n");
printf("\n");
printf("Example: \n");
printf(" ./client 192.168.1.1 50 true\n");
return 0;
}
server_ip = argv[1];
poll_period = atoi(argv[2]);
if (!strcmp(argv[3], "true")) {
tcms_client = true;
}
if (tcms_client) {
udp_port_in = 2222;
}
signal(SIGPIPE, SIG_IGN);
if (connect_to_server() != 0) {
perror("Unable to connect TCP");
exit(1);
}
if (create_udp_send_socket() != 0) {
perror("Unable to create send UDP sock");
exit(1);
}
if (create_udp_recv_socket() <= 0) {
perror("Unable to create receive UDP sock");
exit(1);
}
while (1)
{
printf("\n%lld\n", get_time_ms());
printf("Send heartbeat to server: %d\n", send_data[24]);
printf("OUTPUTS:\n");
print_buff(send_data, SEND_DATA_SIZE);
send_message();
send_data[24] = send_data[24] + 1;
get_message();
printf("\n%lld\n", get_time_ms());
printf("INPUTS:\n");
print_buff(recv_data, RECV_DATA_SIZE);
if (last_hb == recv_data[24]) {
total_unhandled++;
unhandled++;
} else {
unhandled = 0;
last_hb = recv_data[24];
}
printf("\n%lld\n", get_time_ms());
printf("Received heartbeat from server: %d\n", recv_data[24]);
printf("Total sent = %llu, total received = %llu, current unhandled = %d, total unhandled = %d\n", total_sent, total_received, unhandled, total_unhandled);
if (unhandled > 4) {
printf("Current unhandled = %d, STOP\n", unhandled);
break;
}
msleep(poll_period);
}
return 0;
}