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Using TCP/IP sockets, write a client-server program to make client sending the file name and the server to send back the contents of the requested file if present.

Prajwal Kp answered on September 2, 2022 Popularity 3/10 Helpfulness 2/10

answer Using TCP/IP sockets, write a client-server program to make client sending the file name and the server to send back the contents of the requested file if present.

Using TCP/IP sockets, write a client-server program to make client sending the file name and the server to send back the contents of the requested file if present.

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//Using TCP/IP sockets, write a client-server program to make client sending the file name and the server to send back the contents of the requested file if present.
//client
#include <stdio.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <unistd.h>

int main()
{
    int soc, n;
    char buffer[1024], fname[50];
    struct sockaddr_in addr;

    /*  socket creates an endpoint for communication and returns a file descriptor */
    soc = socket(PF_INET, SOCK_STREAM, 0);

    /*
     * sockaddr_in is used for ip manipulation
     * we define the port and IP for the connection.
     */
    addr.sin_family = AF_INET;
    addr.sin_port = htons(7891);
    addr.sin_addr.s_addr = inet_addr("127.0.0.1");

    /*  keep trying to esatablish connection with server */
    while(connect(soc, (struct sockaddr *) &addr, sizeof(addr))) ;
    printf("\nClient is connected to Server");
    printf("\nEnter file name: ");
    scanf("%s", fname);
    /*  send the filename to the server */
    send(soc, fname, sizeof(fname), 0);

    printf("\nRecieved response\n");
    /*  keep printing any data received from the server */
    while ((n = recv(soc, buffer, sizeof(buffer), 0)) > 0)
        printf("%s", buffer);

    return 0;
}

#include <stdio.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <unistd.h>

//server
int main()
{
    int welcome, new_soc, fd, n;
    char buffer[1024], fname[50];
    struct sockaddr_in addr;

    welcome = socket(PF_INET, SOCK_STREAM, 0);

    addr.sin_family = AF_INET;
    addr.sin_port = htons(7891);
    addr.sin_addr.s_addr = inet_addr("127.0.0.1");

    bind(welcome, (struct sockaddr *) &addr, sizeof(addr));
    printf("\nServer is Online");
    /*  listen for connections from the socket */
    listen(welcome, 5);
    /*  accept a connection, we get a file descriptor */
    new_soc = accept(welcome, NULL, NULL);

    /*  receive the filename */
    recv(new_soc, fname, 50, 0);
    printf("\nRequesting for file: %s\n", fname);

    /*  open the file and send its contents */
    fd = open(fname, O_RDONLY);

    if (fd < 0)
        send(new_soc, "\nFile not found\n", 15, 0);
    else
        while ((n = read(fd, buffer, sizeof(buffer))) > 0)
            send(new_soc, buffer, n, 0);
    printf("\nRequest sent\n");
    close(fd);

    return 0;
}

Popularity 3/10 Helpfulness 2/10 Language whatever

Source: fsmk-vtu-cs-department-lab-manual-for-c-programming.readthedocs.io

Tags: back client client-server file send server using whatever

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Contributed on Sep 02 2022

Prajwal Kp

0 Answers Avg Quality 2/10

Using TCP/IP sockets, write a client-server program to make client sending the file name and the server to send back the contents of the requested file if present.

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