server

#include <stdio.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <string.h>
#include <pthread.h>

int valread;
int PORTudp,PORTtcp;
struct sockaddr_in address;

typedef struct _thread_data_t {
  int tid;
} thread_data_t;


void *newInstanceTCP(void *vargp){
      thread_data_t *data = (thread_data_t *)vargp;
      int new_socket,server_fd;
      char buffer[1024] = {0};
      int opt = 1;
      int addrlen = sizeof(address);
      char *hello = "Hello from server\n";
          // Creating socket file descriptor
      if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0){
      perror("socket failed");
      exit(EXIT_FAILURE);
    }
        // Forcefully attaching socket to the port
      if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT,
             &opt, sizeof(opt)))
    {
      perror("setsockopt");
      exit(EXIT_FAILURE);
    }
      address.sin_family = AF_INET;
      address.sin_addr.s_addr = INADDR_ANY;
      address.sin_port = htons( PORTtcp );

      // Forcefully attaching socket to the port
      if (bind(server_fd, (struct sockaddr *)&address, sizeof(address))<0){
        perror("bind failed");
        exit(EXIT_FAILURE);
      }
      if (listen(server_fd, 3) < 0){
        perror("listen");
        exit(EXIT_FAILURE);
      }
      if ((new_socket = accept(server_fd, (struct sockaddr *)&address,(socklen_t*)&addrlen))<0){
        perror("accept");
        exit(EXIT_FAILURE);
      }
      while(1){
    valread = read(new_socket , buffer, 1024);
    printf("%s\n",buffer );
    memset(buffer,0,strlen(buffer));
    send(new_socket , hello , strlen(hello) , 0 );
    printf("Hello message sent. Thread ID:%d \n",data->tid);
      }
}
void *newInstanceUDP(void *vargp){
      thread_data_t *data = (thread_data_t *)vargp;
      int new_socket,server_fd;
      char buffer[1024] = {0};
      int opt = 1;
      int addrlen = sizeof(address);
      char *hello = "Hello from server";
      struct sockaddr_in clientaddr;
      struct hostent *hostp;
      char *hostaddrp;

          // Creating socket file descriptor
      if ((server_fd = socket(AF_INET, SOCK_DGRAM, 0)) == 0){
      perror("socket failed");
      exit(EXIT_FAILURE);
    }
        // Forcefully attaching socket to the port
      if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT,
             &opt, sizeof(opt)))
    {
      perror("setsockopt");
      exit(EXIT_FAILURE);
    }
      address.sin_family = AF_INET;
      address.sin_addr.s_addr = htonl(INADDR_ANY);
      address.sin_port = htons((unsigned short)PORTudp );

      // Forcefully attaching socket to the port
      if (bind(server_fd, (struct sockaddr *)&address, sizeof(address))<0){
        perror("bind failed");
        exit(EXIT_FAILURE);
      }

      int clientsize = sizeof(clientaddr);
      int buffersize=sizeof(buffer);
      int hellosize= sizeof(hello);
      while(1){
    if(recvfrom(server_fd, buffer, sizeof(buffer), 0, (struct sockaddr *) &clientaddr, &clientsize)<0){
      error("receive failed");
      exit(EXIT_FAILURE);
    }

    printf("From Client: %s\n",buffer );
    memset(buffer,0,strlen(buffer));
    sendto(server_fd , hello , hellosize , 0, &clientaddr, clientsize );
    printf("Hello message sent. Thread ID:%d \n",data->tid);
        }
}


int main(int argc, char const *argv[])
{

    PORTtcp = atoi(argv[1]);
    PORTudp = atoi(argv[2]);
    pthread_t tid[200];
    thread_data_t thr_data[200];


    for(int i=0;i<100;i++){
      thr_data[i].tid=i;
      pthread_create(&tid[i], NULL, newInstanceTCP, &thr_data[i]);
    }
    for(int i=100;i<200;i++){
      thr_data[i].tid=i;
      pthread_create(&tid[i], NULL, newInstanceUDP, &thr_data[i]);
    }
    while(1){
    }
    return 0;
}