TCP Client and Concurrent Server in C

#include
#include
#include
#include
#include
#include
#include
#include

void str_cli(FILE *,int );

int main(int argc, char *argv[])
{
int sock;
struct sockaddr_in server;
char buffers[1024];
char data[1024];

if(argc!=3)
{
perror("Enter the IP Address and port number of the server!!\n");
exit(EXIT_FAILURE);
}

sock=socket(AF_INET, SOCK_STREAM, 0);
if(sock<0)
{
printf("FAil to create the Socket\n");
exit(EXIT_FAILURE);
}

bzero(&server, sizeof(server));
bzero(buffers, 1024);
server.sin_family=AF_INET;
server.sin_port=htons(atoi(argv[2]));

if((inet_pton(AF_INET, argv[1], &server.sin_addr)) <= 0)
{
perror("Ip Address format error\n");
close(sock);
exit(EXIT_FAILURE);
}

if(connect(sock, (struct sockaddr *) &server, sizeof(server))<0)
{
perror("COnnection Error");
close(sock);
exit(EXIT_FAILURE);
}
printf("\nEnter the Message to be sent to Server\n");
str_cli(stdin, sock);
exit(0);
}

void str_cli( FILE *fp, int sockfd)
{
char buffer[1024];
bzero(buffer, 1024);

while(fgets(buffer, 1024, fp) != NULL)
{
send(sockfd, buffer, strlen(buffer), 0);
bzero(buffer, 1024);
if(recv(sockfd, buffer, 1024, 0) < 0)
{
perror("\n Client:::Server Terminated permanently\n");
exit(EXIT_FAILURE);
}
else
{
printf("Received Message from the Server is\n");
fputs(buffer,stdout);
}
}
}
      

#include
#include
#include
#include
#include
#include

void str_echo(int );
void ms(FILE *,int );

int main(int argc, char *argv[])
{
int sock, new_conn;
struct sockaddr_in server,client;
int len;

if(argc!=2)
{
perror("Enter a Port Number!!\n");
exit(EXIT_FAILURE);
}

sock=socket(AF_INET, SOCK_STREAM, 0);
if(sock<0)
{
printf("Fail to create socket!!");
exit(EXIT_FAILURE);
}

bzero(&server, sizeof(server));
bzero(&client, sizeof(client));
server.sin_family=AF_INET;
server.sin_addr.s_addr=htonl(INADDR_ANY);
server.sin_port=htons(atoi(argv[1]));

if(bind(sock, (struct sockaddr *)&server, sizeof(server)))
{
perror("Binding Failed");
close(sock);
exit(EXIT_FAILURE);
}

listen(sock,5);

while(1)
{
len=sizeof(client);
new_conn=accept(sock, (struct sockaddr *)&client, &len);

if(new_conn == -1)
{
perror("Acceptance Failed");
close(sock);
exit(EXIT_FAILURE);
}

str_echo(new_conn);
close(new_conn);
}
}

void str_echo(int sockfd)
{
int data_len,i;
char buffers[1024];

while(1)
{
bzero(buffers,1024);
data_len=recv(sockfd, buffers, 1024, 0);
if(data_len>0)
{
if((i=strcmp(buffers, "bye"))==0)
{
printf("\nTerminating");
return;
}
else
{
printf("\n  Message Received from Client is: %s",buffers);
printf("\nEnter the Message to be sent to the client\n");
ms(stdin, sockfd);
}
}
else{}
}
}

void ms(FILE *fp, int sockfd)
{
char buf[1024];
bzero(buf, 1024);

while(fgets(buf, 1024, fp) != NULL)
{
send(sockfd, buf, strlen(buf), 0);
}
}