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A: Hello student I am giving this code as per my best of knowledge :-
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A: The complete JAVA code is given below with output screenshots Happy Coding?
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A: I give the code in Java along with output and code screenshot
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A: Hello student Answer will be given as per my best of knowledge
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Q: Q: Suppose a Jini client caches the tuple it obtained from a JavaSpace so that it can avoid having…
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Q: What is the maximum number of callers in each cell in AMPS?
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A: The program in the C programming language is shown below.
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- Create a simple Client-Server communication via Sockets where Client will send the message in following form → {message, SHA_256_hash_value}. Once the server receives the message it will parse it, calculate the SHA_256 hash value of the message part and compare it with the received hash. If values are matching it will send 'OK' back to Client, else 'Message was compromised'. Use Java GUI to send and receive messages in both parties (client and server).Lightweight clients: Suppose Bob runs an ultra lightweight client which receives the current head of the blockchain from a trusted source. This client has very limited memory and so it only permanently stores the most recent blockchain header (deleting any previous headers). If Alice wants to send a payment to Bob, what information should she include to prove that her payment to Bob has been included in the blockchain? Assume Alice’s payment was included in a block k blocks before the current head and there are n transactions per block. Estimate how many bytes this proof will require in terms of n and k and compute the proof size for k=8, n=256. One proposal is to add an extra field in each block header pointing to the last block which has a smaller hash value than the current block. Explain how this can be used to reduce the proof size from part (b). What is the expected size of a proof (in bytes) now in terms of n and k? To simplify your analysis, you may use asymptotic (Big O)…How does a server know that one of the distant objects he has made available to clients is no longer in use and is therefore available for collection? What options exist and how is this problem handled by Java RMI?
- How does a server know that one of the far-off objects he gives his clients could be collected since it is no longer in use?Below is snw_transport.py. Make sure the code works properly and is plagarism free. Make sure to show the screenshot of the output with the screenshot of the code being tested as plagarism free. snw_transport.py import socket class UDPSender: def __init__(self, host, port): self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) self.receiver_address = (host, port) def send_file(self, file_path): pass UDP receiverclass UDPReceiver: def __init__(self, host, port): self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) self.sock.bind((host, port)) def receive_file(self, file_path): pass if __name__ == "__main__": passImplement a Restful API (with receiving data file) with all HTTP methods, using python flask framework having any scenario that contain a JSON format data of at-least 10 key-value pairs. Your solution file contains Complete code snippet of your Restful API All routes output screens (in postman tool) All server responses screens (clearly shown GET/PUT/DELETE requests and respective HTTP codes) Language : Python Software : Mentioned in Question Paste Screenshots Also
- Hello, the code task below has to be written in python 3 and the HTTP must show the html file from the command line. Please help. Also below is the skeleton python below which needs to be in python 3 Currently, the web server handles only one HTTP request at a time. Implement a multithreaded server that is capable of serving multiple requests simultaneously. Using threading, first create a main thread in which your modified server listens for clients at a fixed port. When it receives a TCP connection request from a client, it will set up the TCP connection through another port and services the client request in a separate thread. There will be a separate TCP connection in a separate thread for each request/response pair. Skeleton Python Code for the Web Server #import socket modulefrom socket import *import sys # In order to terminate the programserverSocket = socket(AF_INET, SOCK_STREAM)#Prepare a sever socket#Fill in start#Fill in endwhile True: #Establish the…From the example of client1.java and server1.java, extends the work to enable chatting among peer to peer. Hint : Add looping for both file prompt message to enter for both files terminate communication when 'q' was press for both files. 'q' stands for quit. (server 1) import java.net.*;import java.io.*;class server1 {public static void main(String[] args) throws Exception { System.out.println("Server is Started"); ServerSocket ss = new ServerSocket(7777); System.out.println("Server is waiting"); Socket s = ss.accept(); System.out.println("Server is connected"); DataInputStream dis = new DataInputStream(s.getInputStream()); String str = (String)dis.readUTF(); System.out.println("Client : " + str); String nickName = "Testing from server"; DataOutputStream dout = new DataOutputStream(s.getOutputStream()); dout.writeUTF(nickName); dout.flush(); dout.close(); dis.close(); s.close();}} (client 1) import java.net.*;import java.io.*;class client1 { public…In the following code fragments add necessary statements: // A Java program for Client // Program to Illustrate Sending and Receiving of Integers across a Stream-mode Socket // Code for a Client Program to Send Two Integers across a Stream-mode Socket import _____________; import _____________; import _____________; class connectionClient{ public static void main(String[ ] args){ try{ InetAddress serverHost = InetAddress.getByName(args[0]); int serverPortNum = Integer.parseInt(args[1]); Socket ____________________________; PrintStream printmass ____________________________________; printmass.println(2); printmass.flush( ); printmass.println(3); printmass.flush( ); ________________. close ( ); } catch(Exception e){e.printStackTrace( );} }}
- Hello, the code task below has to be written in python 3 and the HTTP must show the html file from the command line. Please help. Currently, the web server handles only one HTTP request at a time. Implement a multithreaded server that is capable of serving multiple requests simultaneously. Using threading, first create a main thread in which your modified server listens for clients at a fixed port. When it receives a TCP connection request from a client, it will set up the TCP connection through another port and services the client request in a separate thread. There will be a separate TCP connection in a separate thread for each request/response pair.Add to this code & apply in it, hashing for Confidentiality service or Username & password for Authentication service (JAVA code) server side class initializes socket, establishes connection with socket.accept method, read string and close the connection. but this code Doesn't it implement authentication and confidentiality services, so you should ADD IT in this codes below Server class import java.net.*; import java.io.*;public class TestServer {public static void main(String[] args){try{ServerSocket ss=new ServerSocket(8088);Socket s=ss.accept(); DataInputStream DataInput=new DataInputStream(s.getInputStream());String str=(String)DataInput.readUTF();System.out.println("message= "+str);ss.close();}catch(Exception e){System.out.println(e);}}} client class import java.io.*;import java.net.*;public class TestClient {public static void main(String[] args) {try{Socket s=new Socket("localhost",8088);DataOutputStream output=new…Suppose an HTTP client makes a first GET request to the gaia.cs.umass.edu web server for a base page that it has never before requested, which contains an embedded object, which causes the client to make a second GET request. A very short time later, the client then makes a third GET request - for the same base page, with that third GET request having an If-Modified-Since field (as does the 4th GET request that the client makes for the embedded object). Neither the base object nor the jpeg object has changed. How many round trip times (RTTs) are needed from when the client first makes the third GET request (i.e., when it requests the base object for the second time) to when the base page and the jpeg file are displayed a second time, assuming that: any time needed by the server to transmit the base file, or the jpeg file into the server's link is (each) equal to 1/2 RTT the time needed to transmit an HTTP GET into the client's link is zero? the time needed by the server to transmit…