client/server code

Client:
******

#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <arpa/inet.h>

#define BUFSIZE (4096)

int SocketWait(int socketFd)
{
    struct timeval tv;
    fd_set readSet, writeSet, exceptSet;

    FD_ZERO(&readSet);
    FD_ZERO(&writeSet);
    FD_ZERO(&exceptSet);

    FD_SET(socketFd, &writeSet);

    tv.tv_sec = 100;
    tv.tv_usec = 0;

    if (select((int)(socketFd)+1, &readSet, &writeSet, &exceptSet, &tv) <= 0)
    {
        return -1;
    }

    return 0;
}

int main(int argc, char *argv[])
{
    int sockfd = 0, n = 0, i = 0;
    char* buffer = malloc(BUFSIZE);
    struct sockaddr_in serv_addr;
    int value = 0;

    struct timeval tv;
    double start_time, now;

    setvbuf(stdout, NULL, _IONBF, 0);

    if(argc != 2)
    {
        printf("\n Usage: %s <ip of server> \n",argv[0]);
        return 1;
    }

    if((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
    {
        printf("\n Error : Could not create socket \n");
        return 1;
    }

    memset(&serv_addr, '0', sizeof(serv_addr));

    serv_addr.sin_family = AF_INET;
    serv_addr.sin_port = htons(50000);

    if(inet_pton(AF_INET, argv[1], &serv_addr.sin_addr)<=0)
    {
        printf("\n inet_pton error occured\n");
        return 1;
    }

    value = BUFSIZE;
    if (setsockopt(sockfd, SOL_SOCKET, SO_RCVBUF, (char*)&value, sizeof(int)))
    {
        printf("\n Error : SetSockOpt Failed \n");
    }
    if (setsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, (char*)&value, sizeof(int)))
    {
        printf("\n Error : SetSockOpt Failed \n");
    }

    if( connect(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
    {
       printf("\n Error : Connect Failed \n");
       return 1;
    }

    gettimeofday (&tv, NULL);
    start_time=((double)tv.tv_sec)*1000000.0+tv.tv_usec;

    printf("\n With wait");
    for(i = 0; i < 160; i++)
    {
        if (SocketWait(sockfd))
        {
            printf("\n Error : Select Failed \n");
        }

        if (send(sockfd, buffer, BUFSIZE, 0) != BUFSIZE)
        {
            return -1;
        }
    }

    gettimeofday (&tv, NULL);
    now=((double)tv.tv_sec)*1000000.0+tv.tv_usec;
    printf("\n Time: %.3lfs",  ((now-start_time)/1000000.0));
    start_time = now;

    printf("\n Without wait");
    for(i = 0; i < 160; i++)
    {
        if (send(sockfd, buffer, BUFSIZE, 0) != BUFSIZE)
        {
            return -1;
        }
    }

    gettimeofday (&tv, NULL);
    now=((double)tv.tv_sec)*1000000.0+tv.tv_usec;
    printf("\n Time: %.3lfs",  ((now-start_time)/1000000.0));

    close(sockfd);

    printf("\n");

    return 0;
}



Server:
******
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <time.h>

#define BUFSIZE (65536)

int main(int argc, char *argv[])
{
    int listenfd = 0, connfd = 0;
    struct sockaddr_in serv_addr;
    int value = 0, i = 0;

    char *buffer = malloc(BUFSIZE);
    time_t ticks;

    setvbuf(stdout, NULL, _IONBF, 0);

    listenfd = socket(AF_INET, SOCK_STREAM, 0);

    memset(&serv_addr, '0', sizeof(serv_addr));

    value = BUFSIZE;
    if (setsockopt(listenfd, SOL_SOCKET, SO_RCVBUF, (char*)&value, sizeof(int)))
    {
        printf("\n Error : SetSockOpt Failed \n");
    }
    if (setsockopt(listenfd, SOL_SOCKET, SO_SNDBUF, (char*)&value, sizeof(int)))
    {
        printf("\n Error : SetSockOpt Failed \n");
    }

    value = 1;
    if (setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, (char*)&value, sizeof(int)))
    {
        printf("\n Error : SetSockOpt Failed \n");
    }

    serv_addr.sin_family = AF_INET;
    serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
    serv_addr.sin_port = htons(50000);

    if (bind(listenfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr)))
    {
        printf("\n Error : Bind Failed \n");
    }

    if (listen(listenfd, 16))
    {
        printf("\n Error : Listen Failed \n");
    }

    connfd = accept(listenfd, (struct sockaddr*)NULL, NULL);

    while (1)
    {
        if ((recv(connfd, buffer, BUFSIZE, 0)) <= 0)
        {
            printf("\n Error : Recv Failed \n");
            return -1;
        }
    }

    close(connfd);
}