socket_client.c

#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h> 
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
#define PORT 8080
 int main(int argc, char const* argv[])
  {
      int sock = 0, valread, client_fd;
      struct sockaddr_in serv_addr;
      char* hello = "Hello from client";
      char buffer[1024] = { 0 };
      if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
          printf("\n Socket creation error \n");
          return -1;
      }
 
      serv_addr.sin_family = AF_INET;
      serv_addr.sin_port = htons(PORT);
 
      // Convert IPv4 and IPv6 addresses from text to binary
      // form
      if (inet_pton(AF_INET, "10.110.210.128", &serv_addr.sin_addr)
          <= 0) {
          printf(
              "\nInvalid address/ Address not supported \n");
          return -1;
      }
 
      if ((client_fd
          = connect(sock, (struct sockaddr*)&serv_addr,
                  sizeof(serv_addr)))
          < 0) {
          printf("\nConnection Failed \n");
          return -1;
      }
      send(sock, hello, strlen(hello), 0);
      printf("Hello message sent\n");
      valread = read(sock, buffer, 1024);
      printf("%s\n", buffer);
 
      // closing the connected socket
      close(client_fd);
      return 0;
 }