TCP client server program using c in embedded board(arm64 arch) - c

Question

I have TCP client-server c programs downloaded from github. The codes are working fine in host machine(x86). But when I have compiled and run the same programs for arm64 architecture board, client "connection refused" error is coming.
Test setup & procedure
Target board & host machine are connected using single Ethernet.
Static IPs are assigned such that both are in same network.
Target board & host machine both are able to PING their counterpart.
Server is running in arm64 target board & client in host machine.
Output:
Socket successfully created..
connection with the server failed...: Connection refused
Observation
When both client and server run in target board, connection is getting established.
The problem is encountered when TCP server & client are running in two different architectures.
Following are the codes
**// Server code
//#include <netdb.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#define MAX 80
#define PORT 10500
#define SA struct sockaddr
//print error message and exit process
void die(char *msg)
{
perror(msg);
exit(0); // EXIT_FAILURE
}
// Function designed for chat between client and server.
void func(int sockfd)
{
char buff[MAX];
int n;
// infinite loop for chat
for (;;) {
bzero(buff, MAX);
// read the message from client and copy it in buffer
read(sockfd, buff, sizeof(buff));
// print buffer which contains the client contents
printf("From client: %s\t To client : ", buff);
bzero(buff, MAX);
n = 0;
// copy server message in the buffer
while ((buff[n++] = getchar()) != '\n')
;
// and send that buffer to client
write(sockfd, buff, sizeof(buff));
// if msg contains "Exit" then server exit and chat ended.
if (strncmp("exit", buff, 4) == 0) {
printf("Server Exit...\n");
break;
}
}
}
// Driver function
int main()
{
int sockfd, connfd;
unsigned int len;
struct sockaddr_in servaddr, cli;
// socket create and verification
sockfd = socket(AF_INET, SOCK_STREAM, 0); // same as socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
if (sockfd == -1)
die("socket creation failed...");
else
printf("Socket successfully created..\n");
bzero(&servaddr, sizeof(servaddr)); // memset
// assign IP, PORT
servaddr.sin_family = AF_INET; // IPv4
servaddr.sin_addr.s_addr = htonl(INADDR_ANY); /* host-to-network endian */
servaddr.sin_port = htons(PORT); /* for listening */
// Binding newly created socket to given IP and verification
if ((bind(sockfd, (SA*)&servaddr, sizeof(servaddr))) != 0)
die("socket bind failed...");
else
printf("Socket successfully binded..\n");
// Now server is ready to listen and verification
if ((listen(sockfd, 5)) != 0) // max 5 connections
die("Listen failed...");
else
printf("Server listening for any client..\n");
len = sizeof(cli);
// Accept the data packet from client and verification
connfd = accept(sockfd, (SA*)&cli, &len);
if (connfd < 0)
die("server acccept failed...");
else
printf("server acccepted the client connection...\n");
// Function for chatting between client and server
func(connfd);
// After chatting close the socket
close(sockfd);
}**
//client code
// Write CPP code here
//#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <arpa/inet.h>
//#include <netinet/in.h>
#define MAX 80
#define PORT 10500
#define SA struct sockaddr
void die(char *msg)
{
perror(msg);
exit(0); // EXIT_FAILURE
}
void func(int sockfd)
{
char buff[MAX];
int n;
for (;;) {
bzero(buff, sizeof(buff));
printf("Enter the string for sending to server: ");
n = 0;
while ((buff[n++] = getchar()) != '\n')
;
write(sockfd, buff, sizeof(buff));
bzero(buff, sizeof(buff));
read(sockfd, buff, sizeof(buff));
printf("From Server : %s", buff);
if ((strncmp(buff, "exit", 4)) == 0) { // if Exit message received from Server
printf("Client Exit...\n");
break; //chat ended
}
}
}
int main()
{
int sockfd;
struct sockaddr_in servaddr;
// socket create and varification
sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (sockfd == -1)
die("socket creation failed...");
else
printf("Socket successfully created..\n");
bzero(&servaddr, sizeof(servaddr)); // memset
// assign IP, PORT
servaddr.sin_family = AF_INET; // IPv4
servaddr.sin_addr.s_addr = inet_addr("127.0.0.1");
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
servaddr.sin_port = htons(PORT); /* for connecting */
// connect the client socket to server socket
if (connect(sockfd, (SA*)&servaddr, sizeof(servaddr)) != 0)
die("connection with the server failed...");
else
printf("connected to the server..\n");
// function for chat
func(sockfd);
// close the socket
close(sockfd);
}
This problem is perplexing. I am requesting to please help me to resolve the issue.