training_repo/Filetransfer/client.c

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

#define PORT 8081

#define SERVER_IP "127.0.0.1"

int main() {
    int sockfd;
    struct sockaddr_in server_address;

    if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
        perror("Socket creation failed");
        exit(EXIT_FAILURE);
    }
    printf("enter into program\n");


    server_address.sin_family = AF_INET;
    server_address.sin_port = htons(PORT);
    inet_pton(AF_INET, SERVER_IP, &server_address.sin_addr);


    if (connect(sockfd, (struct sockaddr*)&server_address, sizeof(server_address)) < 0) {
        perror("Connection failed");
        close(sockfd);
        exit(EXIT_FAILURE);
    }

    char s[]="data.txt";
    send(sockfd,s,strlen(s),0);

    char buffer[20];
    int bytes_read;

    FILE* fp = fopen("receiver.txt","w");

        if(fp == NULL)
            printf("file doesn't open\n");
        else
            printf("file open successfully\n");

    while((bytes_read = recv(sockfd,buffer,sizeof(buffer),0)) > 0)
    {
        fwrite(buffer,1,bytes_read,fp);
    }

    if(bytes_read < 0)
        perror("read failed\n");

    close(sockfd);
    fclose(fp);

}