Add files via upload

Author: WandererMath

Makefile

@@ -0,0 +1,12 @@
+all: read server client
+
+read: readChunk.cpp
+	g++ -o read readChunk.cpp
+
+server: server.cpp
+	g++ -o server server.cpp
+
+client: client.cpp
+	g++ -o client client.cpp
+
+	

client.cpp

@@ -0,0 +1,90 @@
+#include<fstream>
+#include<iostream>
+#include<string.h>
+#include<stdio.h>
+
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h> 
+
+#define CHUNK_SIZE 64000
+#define PORT 3456
+#define SERVER_IP "127.0.0.1"
+
+using namespace std;
+
+void sendFile(int sockfd, string fileName);
+
+int main(){
+	int sockfd, connfd;
+	struct sockaddr_in servaddr, cli;
+    string fileName;
+
+	sockfd = socket(AF_INET, SOCK_STREAM, 0);
+
+    bzero(&servaddr, sizeof(servaddr));
+	servaddr.sin_family = AF_INET;
+	servaddr.sin_addr.s_addr = inet_addr(SERVER_IP);
+	servaddr.sin_port = htons(PORT);
+
+    if (connect(sockfd, (struct sockaddr*)&servaddr, sizeof(servaddr))!= 0) {
+		printf("connection with the server failed...\n");
+		exit(0);
+	}
+    cout<<"Enter File Name:  ";
+    cin>>fileName;
+
+    sendFile(sockfd, fileName);
+	// close the socket
+	close(sockfd);
+
+}
+
+void sendFile(int sockfd, string fileName){
+    int fileSize;
+    int n_chunks;
+    int n_bytes;
+    int offset=0;
+    int count=0;
+    char buffer[CHUNK_SIZE];
+
+    fstream f(fileName, ios::in|ios::binary);
+
+    //get file size
+    f.seekg(0, ios::end);
+    fileSize=f.tellg();
+    f.seekg(0, ios::beg);
+    n_chunks=fileSize/CHUNK_SIZE+1;
+
+    //send file size
+    send(sockfd, &fileSize, sizeof(fileSize), 0);
+
+    n_chunks=fileSize/CHUNK_SIZE+1;
+    int size_to_read;
+    for(int i=0;i<n_chunks;i++){
+        offset=0;
+        count=0;
+        if (i!=n_chunks-1)
+            size_to_read=CHUNK_SIZE;
+        else
+            size_to_read=fileSize%CHUNK_SIZE;
+        f.read(buffer, size_to_read);
+        n_bytes=size_to_read;
+        while (n_bytes>0){
+            count=send(sockfd, buffer+offset, n_bytes, 0);
+            if (count>0){
+                offset+=count;
+                n_bytes-=count;
+                //cout<<"Buffer Sent";
+            }
+        }
+    }
+
+    f.close();
+    //sleep(5);
+    recv(sockfd, buffer, 2, 0);
+}

server.cpp

@@ -0,0 +1,74 @@
+#include<fstream>
+#include<iostream>
+#include<string.h>
+#include <stdlib.h>
+
+
+#include <netdb.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h> 
+
+
+
+
+#define CHUNK_SIZE 64000
+#define PORT 3456
+
+using namespace std;
+
+void recvFile(int cSpec, string filename);
+
+int main(){
+    int sockfd, cSpec, len;
+	struct sockaddr_in servaddr, cli;
+    string fileName="received.pdf";
+
+    
+	sockfd = socket(AF_INET, SOCK_STREAM, 0);
+    len = sizeof(cli);
+
+    bzero(&servaddr, sizeof(servaddr));
+	servaddr.sin_family = AF_INET;
+	servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
+	servaddr.sin_port = htons(PORT);
+    bind(sockfd, (struct sockaddr*)&servaddr, sizeof(servaddr));
+    listen(sockfd, 1);
+
+    cSpec = accept(sockfd, (struct sockaddr*)&cli, (socklen_t*)&len);
+    recvFile(cSpec, fileName);
+    close(sockfd);
+
+}
+
+void recvFile(int cSpec, string filename){
+    char buffer[CHUNK_SIZE];
+    int fileSize;
+    char end_sp[]="ED";
+    fstream fw(filename, ios::out);
+
+    bzero(buffer, CHUNK_SIZE);
+    //get file size
+    if (recv(cSpec, &fileSize, sizeof(fileSize), 0)<0){
+        cout<<"ERROR"<<endl;
+    }
+    cout<<fileSize<<endl;
+
+    //receive file chunk by chunk
+    int n_bytes=fileSize;
+    int count;
+    while(n_bytes>0){
+        count=recv(cSpec, buffer, CHUNK_SIZE, 0);
+        if (count>0){
+            fw.write(buffer, count);
+            n_bytes-=count;
+            bzero(buffer, CHUNK_SIZE);
+            
+        }
+    }
+    fw.close();
+    send(cSpec, end_sp, 2, 0);
+
+  
+}