This simple software uses these two classes to send and receive files. I have explained in detail the file handling commands that are required. Click this zipped file for UDP Multicast examples. In this section we will answer the most frequently asked questions about programming sockets in Java. UDP is a connection-less, unreliable, datagram protocol (TCP is instead connection-oriented, reliable and stream based). We can use a SocketChannel instance for sending file. ogre4j is a project that enables the use of the OGRE (Object-Oriented Graphics Rendering Engine) library through JNI in Java applications. This feature is not available right now. It starts a server which will be always running listening to a port 25000 (Server. Show list of all file names from a folder. The transaction can be completed in one round trip time (RTT) - the client sends the transaction request into a UDP socket, and the server sends the reply back to the client's UDP socket. UWP offers TCP and UDP socket classes for client-server or peer-to-peer applications, whether connections are long-lived or an established connection is not required. The only thing you need to do is to store those images in the client application's folder, send some symbols instead of images. pdf), Text File (. We're going to write a clone of Pong that we can play over the Internet. and also this program should work for ipv4 as well as ipv6. Start by using nc to listen on a specific port, with output captured into a file:. I cannot use any t. Implement a UDP socket programming for reliable data transfer a file based on go-back-n protocol in java, details are in attach zip files UDP. txt which contains a list of quotes. In HTTPS, the communication protocol is encrypted using Transport Layer Security (TLS. It was moaning about the packet size. java socket file transfer free download. Here you will transfer a text file from Client to Server. IPC is transmitting a message between a socket in one process to a socket in another process. DatagramSockets can be used to both send and receive packets over the Internet. asp admin hack badware chat Computer network data structures dooms day email spoofing ethical hacking File transfer Google hacking hacking harold camping java leftist tree leftist tree c code malware RB Tree RB Tree C code Red Black Tree safe browsing sai baba security shaare mubarak spiritualism marketing superstition TCP/IP trace email. Using the settings in these windows, you can get your copies of X-Plane networked in all sorts of ways. my script is break after processing around 8000 of 41,000 for. The package java. Socket options allow programmers greater control over socket communication, and are supported by Java as of JDK1. While a few things have changed in the 18 years since, Mahmoud's article is still a classic introduction to Java socket programming in networked systems. getLocalHost(),1100); 4. It is very simple to create a socket client using the Python's socket module function. In this chapter, we start with the much-simpler UDP, including the UDP-based Trivial File Transfer Protocol. Overlay Socket • An overlay socket (OL Socket)is an endpoint for communication in an overlay network • An overlay socket provides application programs an interface for communications over an overlay network • The application programming interface (API) of an OL Socket offers applications the ability to • create overlay;. In this chapter, we start with the much-simpler UDP, including the UDP-based Trivial File Transfer Protocol. UDP and TCP abstraction of the above is a socket. Java NIO classes were introduced in Java 1. Ask Question 0. Actually, it's not a real connection, just a basic method for sending data from one point to another. TFTP uses the User Datagram Protocol (UDP)and provides no security features. I have created a basic server which receives message sent by client. The netty component in Camel is a socket communication component, based on the Netty project. Home; Java Tutorial; Language; Data Type; Transfer a file via Socket : Socket « Network « Java. net includes the ServerSocket class, which implements the server-side socket, which servers can use to listen for and accept connections to clients. If you saw yesterday's Tech Tip and were looking for more on using TCP/IP with bash's built-in /dev/tcp device file then read on. java) /* UDPServer Berfungsi sebagai server menggunakan protokol UDP. UDP File Transfer. ) • TCP is useful when indefinite amount of dataneed to be transferred 'in order' and reliably otherwise, we end up with jumbled files or invalid. This certainly can be done using UDP datagrams. The message sent by client is the name of file. I have written a java code to transfer files from one server to another using the concept of socket programming. The codes are written in rush and doesn't have much standards/best practices followed. Unlike using UDP to transfer file, TCP/IP said to be connection oriented; which, both client and server after a setup phase treat some IP packets as being sent along a virtual route, enabling for data that is too large to fit into a single IP packet to be sent and for retransmission to occur when packets are lost. Look at most relevant Udp file transfer java code websites out of 759 Thousand at KeyOptimize. • Java keeps all the socket complexity “under the cover” it does not expose the full range of socket possibilities but, it enables that sockets be opened/used as easily as a file would be opened/ used • by using the java. sourceforge. ServerAuthenticator. udp file transfer. Java TFTP Client. I have created a basic server which receives message sent by client. Unix Socket Ports and Services - Learning Unix Sockets in simple steps with C programming language. In NetBeans IDE 8. The DatagramPacket and DatagramSocket classes in the java. The open port checker is a tool you can use to check domain or your external IP address and detect open ports on your connection. (For UNIX domain sockets, which are identified by pathname) Write permission is denied on the destination socket file, or search permission is denied for one of the directories the path prefix. Proxy server ‐ write a highly efficient tunneling proxy server Port unification ‐ run services with different protocols on a single TCP/IP port. Java Socket Programming-File transfer through socket in Java Coderpanda. Your difficulties can serve as a reminder to others that a good first step in debugging jtcp. The code is going to cover synchronous , singled threaded usage of the UdpClient class. Anything that is possible to program in the Java language is also possible to do in a Java applet. The server sockets feature supports binary and ASCII transfers. Mahmoud, the article presents an overview of the Java model for socket programming. A socket is an endpoint for communication between two machines. Send plain or colored UDP network text, then receive and view it instantly with a Freeware tool for Windows and Linux/Mac. It is most easiest way to transfering files between computers (FTP Client and Ftp Server). Assuming that the file location is at //abc/abc. 573988 msec Using Buffered Stream Elapsed Time is 125. It uses two values, client and server, to establish a connection as the client or the server. This three-part series on AIX 7 networking focuses on the challenges of optimizing network performance. The server is a DatagramSocket object and is waiting to get a DatagramPacket. This text describes a simple thread pooled server implemented in Java. variables?); most of this information can be obtained by using your debugger. Java Socket Programming-Transferring file using UDP. When creating software nowadays, it's not so important if you can do it, it is how. TCP File Transfer Socket Programming in Unix Using C Programming. Cross-platform TCP/IP Socket Programming in REXX FTP 21/tcp File Transfer dialogue FTP-Data 20/tcp File Transfer data transfer close the socket You can use. It's a technology for transferring files between network devices and is a simplified version of FTP (File Transfer Protocol). I am attempting to send files using UDP. Hi, i would like to know how to transfer a file using udp protocol from server to client. The connection can be TLS or a regular non-encrypted TCP connection. ppt), PDF File (. The article elaborates the concept behind the client/server model with hands-on details in creating a TCP client/server application in Java. (IP stands for Internet Protocol. In this chapter we are discussing about transferring large sized files through socket with suitable example. Before going into the details of this program "Server to Client UDP Java", it is advised to go through the network basics, sockets and binding and UDP basics. I have implement the simple TCP server and TCP client classes which can send the message from client to server and the message will be converted to upper case on the server side, but how can I achieve transfer files from server to client and upload files from client to server. It does not have authentication, it cannot list files in directory and so on. Java Network Programming - TCP/IP Socket Programming 4. Open or Close a TCP/UDP Socket in Bash Shell. It is also shown how to run the socket application with the java command and how to use Wireshark for monitoring TCP/IP network traffic between the server and client socket. java program for sliding window protocol; 81. Transferring Java object through socket using UDP We are discussing the concept with an example. In this post, it is shown how a simple Java UDP server and client socket application can be implemented in Java using the java. I thought of doing it using HTTP: user A sends raw bytes to the server and the server saves the file locally. Learn how to create java threads and how to use java IO; Learn the basics of Java sockets programming: creation and usage of sockets; Know how to develop Client/Server TCP and UDP applications; Learn how to transfer data between server/client applications running on different machines on the network. After studying the first application on UDP protocol, let us go to the second application Echo Server. Channel Java Programming ----- This Project use to transfer data from client to server I create it by java with Netbeans IDE use ( Java Socket ) like for download here : https://drive. It is often used by servers to bootdiskless workstations, X-terminals, and routers. Develop a client server application which implements File Transfer protocol. On line 12 we close the Socket connection using the close() method. All UDP-based solutions must track individual data packets to ensure delivery. The binding of file descriptors to objects is specific to each process, like the virtual. The Echo server sends back to the same client the message it received. 12 thoughts on “ Creating Simple TCP/IP Server And Client to Transfer Data Using C# / VB. TCP properties: reliable, connection-oriented, byte-stream, connection established before application-level protocols exchange information, two-way communication. If you specify a port that is in use, the creation of the DatagramSocket will fail. Effect: On file transfer between server and computer, when gets about 50% of bandwidth, the connection with internet slows down to zero bytes transfer. If you are just setting up your devices, your first choice should probably be TCP. file transfer program in c using tcp; file transfer using socket programming in c; program for file transfer using tcp in c. It has no handshaking or flow control. I got the codes from another java forum that meet my requirements. If this constructor is used, the OS would assign any port to this socket. Create an output stream that can be used to send information to the Socket. Point-to-Multipoint File Transfer Protocol with UDP [Oct'13] Created multithreaded Server and Client in Java to exchange data over the internet using UDP Implemented a stop-and-wait protocol for communication between Client and Server. up vote 10 down vote favorite. There is no distinction between a UDP socket and a UDP server socket. Socket programming A socket is a communications connection point (endpoint) that you can name and addr ess in a network. Hi, I am trying to built a C# windows application which will transfer file line by line by selecting TCP or UDP (both should be on same windows app) and the line transferred should be displayed in a text box1 followed by line received at another text box2 on same windows but didn't succeed can any1 send me sample code. Socket and java. I have written code for audio file(mp3) transfer between client and server. Transfer a file via Socket : Socket « Network « Java Tutorial. An application can use a UDP port number and another application can use the same port number for a TCP session from the same IP address. For reading the data sent by other side, they use BufferedReader and to send data they use PrintWriter. How to Simulate a TCP/UDP Client Using Netcat María Hernández June 22, 2017 In this guide, we’ll introduce the client-server model and show you how to simulate a TCP/UDP client using a useful tool called Netcat – so you can establish connection using your computer’s own terminal. Socket class instead of relying on native code, your Java programs can communicate over the network in a platform-independent fashion. But it is faster when comparing with TCP. We are now at the end of this article. Tutorial No 8 in Socket Programming : Transferring a text file. Simultaneous transfer between Server and Client Using Socket Programming Through UDP UDP Simultaneous transfer using Socket Server Side: import java. If you specify a port that is in use, the creation of the DatagramSocket will fail. java) sends a number (message) to the server. Socket acts as a client and ServerSocket acts as a server. The address to which data goes is stored in the packet, not in the socket. Use at your own risk. This program using udp theory for file transfer, the file is divided into blocks 256B, in order to ensure data transmission order, synchronizing using a custom Windows message, that is, each accepted one piece of data to give a message, law was sent after the message data is sent. The File object itself does not read the file, it simply acts as a signpost to tell other classes which file you want to manage. If you saw yesterday's Tech Tip and were looking for more on using TCP/IP with bash's built-in /dev/tcp device file then read on. You known, file data is usually stored in database in column of BLOB type, so with JDBC we can use the method getBlob() defined in the java. like DNS and RADIUS. net) takes care of all of. If you are just starting out with UDP, you can try reusing those, which might help you get to a quick starting point. Datagram Sockets. This is a demonstration of code for a socket FTP Server, it cares about a logical permission to establish a connection and get a file. Here this post introduces a simple lightweight Server client two person chat program using java. So if I'm going to a send a file, If use UDP, would it be faster than TCP? With a data transfer of 50 GB estimated 5 hours. RFC 959 October 1985 File Transfer Protocol user A person or a process on behalf of a person wishing to obtain file transfer service. The socket. " Written by Qusay H. The WebSocket protocol enables interaction between a web browser (or other client application) and a web server with lower overhead than half-duplex alternatives such as HTTP polling, facilitating real-time data transfer from and to the server. java is a server program that listens on a particular port for the client to connect, and then reads 4K bytes of data at a time from the socket. File transfer program in java using TCP made Simple - Duration: TCP vs UDP Comparison AndroJava Tech4U 9,039 views. I have not built the server code yet, is this why the exception is being thrown? my logic seems correct and has everything accounted for. There are several functions, however, specifically designed to handle sockets. Java File IO Operations Sample Code Examples. Source code is given to implement file transfer applications, along with rudimentary Instant-Messenger style applications. It is also built on top of IP. Hi, Am working on module for which i need to transfer a file using java Http. I can receive only a part of it. logging library is already included with the Java SE Development Kit (JDK), you only need to add the following import statement to your project: import java. This basic example offers an interface for UDP communication using the python socket implementation. I'm implementing a UDP file transfer. TCP File Transfer Socket Programming in Unix Using C Programming. Similarly, files can easily be sent using UDP protocol and a simple client/server. A socket is an endpoint for communication between two machines. The file size does not have any limit in this case. Java Socket Programming-Transferring file using UDP. I have to make a server-client file transfer using UDP. In this section, you create a Java application to demonstrate socket programming in Java. If both are running in the machine , the adress to be given at the client side is local host address. JDasm is a library written in java to easily manipulate Java class files. If you specify a port that is in use, the creation of the DatagramSocket will fail. This kind of socket is used on the client-side to listen for packets that the server broadcasts to multiple clients. This three-part series on AIX 7 networking focuses on the challenges of optimizing network performance. We are now at the end of this article. Chat application in Java It uses TCP socket communication. You can vote up the examples you like and your votes will be used in our system to generate more good examples. UDP is still layered ontop of IP. Protocol : UDP Encryption: XOR encryption. pipe file socket process file descriptor table kernel system open file table tty Disclaimer: this drawing is oversimplified. Semaphore in Unix Using C Programming. I know that RMI runs on port 1009, but I need to create an FTP Client Server solution so have decided to use Sockets running on port 21 and the File class, i've scrapped using FTP classes. After studying the first application on UDP protocol, let us go to the second application Echo Server. The human user may interact directly with a server-FTP process, but use of a user-FTP process is preferred since the protocol design is weighted towards automata. ASCII_FILE_TYPE , FTP. I think you want some examples which sends video through UDP socket. When receiving a UDP datagram, you also use the DatagramPacket class to read the data, sender, and meta-information. I have to make a server-client file transfer using UDP. Sun Microsystems launch jdk 1. UDP chapter focus on the difference between the most used Transport Layer protocols: TCP and UDP. Sockets Imports System. The program works by starting the server with "server " and the client with "client " where is a complete path to either a file or directory. Your application needs these features to deliver a file to the client. Add another IP address. Recommend：java - File transfer through socket (no matter the number files i'm sending. DatagramSocket's are Java's mechanism for network communication via UDP instead of TCP. Let the client side request for files and the server reads it and sends to the client. UDP works a bit differently from TCP. One of its primary uses is in the early stages of nodes booting from a local area network. *; Simple Logging Facade for Java (SLF4J) To use SLF4J: Download SLF4J from the SLF4J website. On the Choose Project page, perform the following steps: Select Java from Categories. FTP client used to download content from the server. hi!!! i m rina,my project is video conferencing using java. It also shows how unsecured files can be easily sniffed by a simple 'sniffer' application. Before going into the details of this application "Echo Server UDP Example Java" it is advised to go through the network basics, sockets and binding and UDP basics. This is the best example of using udp I have found. You can vote up the examples you like and your votes will be used in our system to generate more good examples. I know UDP should not be used to transfer file as it may be corrupted but i have to do it as assignment. It is a fire and forget type protocol. Datagram sockets use User Datagram Protocol (UDP). If you are just setting up your devices, your first choice should probably be TCP. Before explanation, let’s see some basic view of terminology. The most basic use of SSH is for connecting to a remote host for a terminal session. net package consisting of ServerSocket and Socket classes for data transfer using TCP protocol, while DatagramPacket and DatagramSocket classes for UDP data transfer and special feature of multicasting to a specified group. Hosted Graphite is easily accessible using native libraries of Java, Python Ruby, Node. In java, there are two classes which help in communication via these ports. In this chapter we are discussing about transferring large sized files through socket with suitable example. If you have no knowledge of the Linux kernel, yet are interested in the contents of network packets, raw sockets. Text Imports System. Obviously, file transfer requires a reliable transport layer - developing one will be the subject of project 2. hi i want file transfer program using udp protocol in java. The SCP command-line tool works similarly to the gcloud compute scp, but requires you to manually manage your SSH keys. We can use a SocketChannel instance for sending file. jrDesktop - Java Remote Desktop - is a cross-platform software for remote desktop control, remote assistance and desktop sharing. We discussed the TCP/IP model earlier. I found some code which are complex and most of them are MFC based. I have created a basic server which receives message sent by client. Tidak mendukung buffering c. 3 G52-33-021 allows remote attackers to cause a denial of service (CPU consumption) via short packets on TCP port 5001 with the 3, 5, 7, 13, 14, or 15 packet types. ftp 21/udp # File Transfer [Control] ssh 22/tcp # Secure Shell Login ssh 22/udp # Secure Shell Login telnet 23/tcp telnet 23/udp. Code works fine (I tested with one or two. net, and provide both socket level and TcpClient / TcpListener (and. Learn the basics of Java sockets programming: creation and usage of sockets; Know how to develop Client/Server TCP and UDP applications Learn how to transfer data between server/client applications running on different machines on the network. I made a simple program that sends UDP packets, but files kinda get messed up sometimes since UDP isn't reliable, is there a simple way to send name-value pairs with UDP?. Add another IP address. It is assumed that the client will finish after its operation and there is no need to supply a file list from the server (although I plan to add that). Data transfer between Android and Arduino. In this video I have implemented Server Client program (Socket program) to transfer file in java using TCP. Now, I also want to check for the network connection availability before each file is transferred. In this tutorial, I will explain how communication occurs between server-client through UDP/IP. Protocols and ports. I have created a basic server which receives message sent by client. The file size does not have any limit in this case. However, if we want to specify options we need another set of functions. Java Socket Programming with UDP-example. This is a demonstration of code for a socket FTP Server, it cares about a logical permission to establish a connection and get a file. Syslog: Sending Java log4j2 to rsyslog on Ubuntu Logging has always been a critical part of application development. In Android, devices that support API level 14 or above, can easily create Wi-Fi pair connection or peer-to-peer connections and share the data or files among the devices. JSSE is the acronym of Jave Secure Socket Extensions. *; Simple Logging Facade for Java (SLF4J) To use SLF4J: Download SLF4J from the SLF4J website. The advantage is the ability to leverage a secure connection to transfer files and traverse the filesystem on both the local and remote system. UDP Port 161 Yes, sockets need to be unique. Allow any object type to use DGTP services. Obviously, file transfer requires a reliable transport layer – developing one will be the subject of project 2. Yes it is possible to build a UDP file transfer application using C#, but no it is not possible to do it well within 240 developer hours. At this point users B and C see that a file was uploaded and start downloading it. In the previous chapter we explained how java objects are transferring between two. The open port checker is a tool you can use to check domain or your external IP address and detect open ports on your connection. net package. You do, however, have the option of establishing a default remote host in one of the following two ways: Create an instance of the UdpClient class using the remote host name and port number as parameters. I thought of doing it using HTTP: user A sends raw bytes to the server and the server saves the file locally. UDP, which stands for User Datagram Protocol, is a method used to transfer large files across the Internet. I have created a basic server which receives message sent by client. Introduction. I am attempting to send files using UDP. P2P File Sharing Application (Java) without the server knowing and can also transfer files from each other. The connection can be TLS or a regular non-encrypted TCP connection. A UDP socket in the connected state will only receive datagrams that originate from the given remote address. Message Queue in Unix Using C Programming. Hello, I am using UDP to transfer files from server to client but I cannot receive the complete file. Text Imports System. UDP client /server program to transfer a string in Infosys Campus Connect Sample Test1 Dt: 20-08-2011 TCP clent/server to transfer a file; Semaphore /Shared memory simple example; TCP concurrent client/server program to echo a str C Aptitude Papers for Final CSE A/B July (13) June (1) April (5). Each line in the text file containt 64 letters so 64 bytes. UDPSocketClient. File Transfer In Java Using Sockets Apr 8, 2014. In UNIX the first 1024 ports for both protocols are called “well known ports” and are defined in the file /etc/services. I have Server and Client java files. You can vote up the examples you like and your votes will be used in our system to generate more good examples. It uses two values, client and server, to establish a connection as the client or the server. I have written a java code to transfer files from one server to another using the concept of socket programming. Close the socket. UDP Socket Programming in Unix Using C Programming. They use one of two transport layer protocols: the Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP). Hi, I am trying to built a C# windows application which will transfer file line by line by selecting TCP or UDP (both should be on same windows app) and the line transferred should be displayed in a text box1 followed by line received at another text box2 on same windows but didn't succeed can any1 send me sample code. Regardless of whether it’s a server or a client, each application first creates a socket. The functionality in this application of "Server to Client UDP Java Example" is server sends system time to the client for each second. Socket Programming in Java | Sending Text Files Between Server and Client by dumbitdude · Published July 3, 2017 · Updated August 22, 2018 In order to understand socket programming in java and how to send text files between server and client, you need to first comprehend the basics of networking. txt and it uses port 1234 It would be great if sample code. And one more thing is this transfer using a UDP(User Datagram Protocol) socket/protocol? [+1 year ago] Answer it. I wrote a few programs using TCP sockets but wanted to switch to UDP for a boost in speed. I have not built the server code yet, is this why the exception is being thrown? my logic seems correct and has everything accounted for. Implement a UDP socket programming for reliable data transfer a file based on go-back-n protocol in java, details are in attach zip files UDP. You can vote up the examples you like and your votes will be used in our system to generate more good examples. We can use a SocketChannel instance for sending file. --> Now I will discuss about, how we can transfer a large file (file size in GB) using Microsoft dot net socket programming using C Send File from Server to Client using C# Socket Programming Hello Friends, after long day’s gap I am writing some blog for you. Actually, it's not a real connection, just a basic method for sending data from one point to another. Please see the Deliverables and attached image for the details. I have to make a server-client file transfer using UDP. Networking basics 1. Example of Java Socket Programming. TCP and UDP supports 64K sockets, from socket number 0 to socket number 65,535. In NetBeans IDE 8. I should have the option of transfering files also. How to get list of all files from a folder? Filter the files by file extensions and show the file names. Sending a file via TCP/UDP socket. It is defined by RFC 768 written by John Postel. Such settings are typically disadvantageous for the more common TCP protocol. Semaphore in Unix Using C Programming. The transaction is faster in UDP. my main problem is that everytime I transfer something it gets more bytes than the original one, and I need to use digest messages after I complete this so it wont work the way it is, and the other one is when. file transfer program in c using tcp; file transfer using socket programming in c; program for file transfer using tcp in c. I know UDP should not be used to transfer file as it may be corrupted but i have to do it as assignment. We have a server as well as a client. C, Java, Perl, Python,… *nix, Windows,… Socket Programs written in any language and running on any platform can communicate with each other! Writing communicating programs in different languages is a good exercise 2: Application Layer 5 Socket Programming is Easy Create socket much like you open a file. has a user interface buit using Java AWT and Java Swing. Server receives this number and multiplies it by 2. Hi, Today we will create two sample programs which will demonstrate the use of Sockets in UDP through a chat mechanism. (C++) Transfer a File using Sockets (TLS or non-TLS) Demonstrates how to two programs, one a socket writer and the other a socket reader, can transfer a file. net provides the necessary ingredients to implement the socket communication between two of the topmost TCP/IP layers: application and transport. Any two computers that are on the same network (and that can be on the Internet) can transfer files using the File Transfer Protocol. I experienced this method to run more stable in time critical application than the matlab/java UDP socket. Let the client side request for files and the server reads it and sends to the client. An article on file transfer using sockets. txt and it uses port 1234 It would be great if sample code. Programming sockets in Java. They both use ports to communicate with upper OSI layers and to keep track of various conversations that occur simultaneously. If you are just starting out with UDP, you can try reusing those, which might help you get to a quick starting point. write() in the client because it may "duplicate" the data. According to transferFrom() method javadoc, this way of copy file is supposed to be faster than using Streams for java copy files. An article on file transfer using sockets. Read RAW Socket in Unix Using C Programming. How do I find out more about socket files in /proc/fd? information about open files such as Internet sockets or Unix udp, and so on depending on socket. ServerSocket. Unlike using UDP to transfer file, TCP/IP said to be connection oriented; which, both client and server after a setup phase treat some IP packets as being sent along a virtual route, enabling for data that is too large to fit into a single IP packet to be sent and for retransmission to occur when packets are lost. You can use send and recv, or you can transform your client socket into a file-like beast and use read and write. I am trying to make use UDP sockets to transfer a file from a client to a server. This simple software uses these two classes to send and receive files. search Java C++ code example for sending UDP network text in Windows and Linux. Anything that is possible to program in the Java language is also possible to do in a Java applet. I tried using another port but it still doesn't work. We discussed the fundamentals of UDP and communication using UDP earlier. For example if the size of the file to be sent is 25 MB, I am receiving only 60 KB at the client end.