Implementing C Programs for TimeServer and TimeClient in Week 12

You get a job working for the Cerulean City Gym. A previous coder group implemented a client-server program where multiple clients would send message to the server using a single pipe. It worked quite well for years. Now, the requirements have changed and a different group of programmers came in and made some changes. Now, the data being received at the server end is now garbled. The new programmers weren't able to resolve the issue keeping to the original pipe design. Discarding the pipe approach, how would you fix this situation? Based on what you've learned in class, what IPC method would you use to fix this situation?

Part A:                                                                                                                    Develop a TCP server program in java that waits for clients to connect. The server responds to the client with one of the following based on client’s request: Export public key generated using KeyPairGenerator Export Message Digest Export Digital Signature Send original text for the encrypted text received from client   Part B:             Develop a TCP client program that request from TCP server developed (in Part A) public key, Message Digest, Digital Signature and original text by sending the encrypted text. TCP client will display the various objects received from TCP server on its console.

Discuss the differences between two interfaces presented below. Find out the best one, and why you consider it is a good interface. 1- South Carolina Area Rates City Motel/Hotel code Phone Single Double Best Western Days Inn Charleston Charleston Charleston Holiday Inn N Charleston Holiday Inn SW Charleston Charleston Charleston 803 803 803 803 803 803 747-0961 881-1000 744-1621 556-7100 524-4148 774-8281 744-2401 $126 $130 $118 $124 $136 $146 $133 $147 $131 $136 $133 $140 $134 $142 Howard Johnsons Ramada Inn Sheraton Inn 803 803 803 803 803 Columbia Columbia Columbia Columbia Columbia Columbia Columbia Columbia Best Western Carolina Inn Days Inn Holiday Inn NW Howard Johnsons 796-9400 799-8200 736-0000 794-9440 772-7200 772-0270 796-2700 796-6240 $129 $134 $142 $148 $123 $127 $132 $139 $125 $127 $134 $141 $136 $144 $127 $130 Quality Inn Ramada Inn Vagabond Inn 803 803 803 803 Pennsylvania Bedford Motel/Hotel: Crinaline Courts (814) 623-9511 S $118 D: $120 Bedford Motal/Hatel: Holiday…

TCP MULTIPLEXING AND DEMULTIPLEXING In the scenario below, the left and right TCP clients communicate with a TCP server using TCP sockets. The Python code used to create a single welcoming socket in the server is shown in the figure (the welcoming socket itself is not shown graphically); code is also shown for the client sockets as well. The three sockets shown in server were created as a result of the server accepting connection requests on this welcoming socket from the two clients (one connection from the client on the left, and two connections from the client on the right). mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 6189 ); P1 Answer mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 5854 ); ♫ transport QUESTION 1 OF 8 network link physical What is the source port # for packet C? www B source port: ? dest port: ? P4 HIGH A source port: ? dest port: ? P5 P6 transport network lirk physical mySocket1 = socket (AF_INET, SOCK_STREAM) mySocket1.bind…

TCP MULTIPLEXING AND DEMULTIPLEXING In the scenario below, the left and right TCP clients communicate with a TCP server using TCP sockets. The Python code used to create a single welcoming socket in the server is shown in the figure (the welcoming socket itself is not shown graphically); code is also shown for the client sockets as well. The three sockets shown in server were created as a result of the server accepting connection requests on this welcoming socket from the two clients (one connection from the client on the left, and two connections from the client on the right). mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 6189 ); P1 mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 5854 ); U transport network link physical QUESTION 2 OF 8 B source port: ? dest port: ? What is the destination port # for packet C? P4 P5 P6 transport network link physical A source port: ? dest port: ? mySocket1 = socket (AF_INET, SOCK_STREAM) mySocket1.bind (myaddr, 5262…

Hello. I need help to develop a C simulation program to simulate an 8-port Ethernet switch. The switch initially has no knowledge about the hosts connected to each port. It learns frame addresses and stores-and-forwards the frames. The input text file "in.txt" contains information of the incoming frames, one frame per line. There are 4 pieces of data per line: frame ID, arrival port, frame source address, and frame destination address. The frames arrive at the switch in the order of which they appear in the input file. Destination address "X" indicates a broadcast frame. The output text file"out.txt" has 8 lines. Each line lists all the frames departing from each port, here is an example:"in.txt" contains 5 incoming frames: F1 P2 B--AF2 P6 D--CF3 P5 E--BF4 P7 F--DF5 P6 D--X"out.txt" should list the departing frames on each port:P1: F1 F2 F5P2: F2 F3 F5P3: F1 F2 F5P4: F1 F2 F5P5: F1 F2 F5P6: F1 F4P7: F1 F2 F5P8: F1 F2 F5 The contents of the in.txt file is found below. F1    P1    A--GF2…

Computer Networking Assignment 2   Lab 2: Web Server Lab   In this lab, you will learn the basics of socket programming for TCP connections in Python: how to create a socket, bind it to a specific address and port, and send and receive a HTTP packet. You will also learn some basics of HTTP header format.   You will develop a web server that handles one HTTP request at a time. Your web server should accept and parse the HTTP request, get the requested file from the server’s file system, create an HTTP response message consisting of the requested file preceded by header lines, and send the response directly to the client. If the requested file is not present in the server, the server should send an HTTP “404 Not Found” message back to the client.   Code Below you will find the skeleton code for the Web server. You are to complete the skeleton code. The places where you need to fill in code are marked with #Fill in start and #Fill in end. Each place may require one or more lines of code.…

I need the Server code written in Python for the given client code. A sample working client code is given to you in Client.py.  I need a corresponding Server code. The goal of the server is to get any string sent to it, and switch any letters from lower case to capital and vice-versa. Lastly it should then close gracefully when the client is done sending strings. The client code is provided below: import argparse from sys import argv import socket #First we use the argparse package to parse the aruments parser=argparse.ArgumentParser(description="""This is a very basic client program""") parser.add_argument('-f', type=str, help='This is the source file for the strings to reverse', default='source_strings.txt',action='store', dest='in_file') parser.add_argument('-o', type=str, help='This is the destination file for the reversed strings', default='results.txt',action='store', dest='out_file') parser.add_argument('server_location', type=str, help='This is the domain name or ip address…

A TCP server requires four separate actions to start up: SOCKET, BIND, LISTEN, and ACCEPT. Argue either for or against the following proposi- tion: The TCP library should be redesigned to combine the four TCP server setup calls into just one or two new calls. If for, give the parameters and return values of the resultant new call(s), and give a description and example of its use. If against, give examples of things one might like to do that would be hindered by a consolidated system.

C# Language Needed

Socket programming in c language in windows Implement one server and three clients using multithreaded exchanging messages between them and then doing checksum error detection or parity

There are many techniques, approaches or architectures that extend the concept of a local method or function call to remote connections. In the lecture we have seen RPC2, XML- RPC, Java Sockets, JAVA RMI, CORBA, Message Oriented Middleware, SOAP (Simple Object Access Protocol), RESTful Services and gRPC. Assume you are a Software Developer who has been asked to use a lightweight approach to link legacy Java Software with a newly developed GUI, also written in Java. Recommend one of the techniques from the above list and justify your decision.

give An application that notifies the user when the stock price of a specific company changes could be an example of a watcher design.and go over several benefits of using the watcher pattern in the session design pattern.give An application that notifies the user when the stock price of a specific company changes could be an example of a watcher design.and go over several benefits of using the watcher pattern in the session design pattern.

Write the code in java

Tracing the steps methodology, to write a java program, where the server side receive a TCP connection from client side, and then the client upload on the server the following files using FTP: 1- Image file named “ Myimage.jpg” if the client upload <image file>.2- Text file named “Mytext.txt” if the client upload <text file>.

Computer science Use C language to solve the question. The initial server and client .c code is given write code using these .c client and server files. Q1: Design a client-server model for two-way communication. Both the client and server should beable to send and receive messages.Upon the establishment of successful connection, the server should send a message, “Hi, youhave connected to the server!”.[The client should then send a string to the server. The server should reverse the string andsend it back to the client. The client should then display the received string.] This job will bedone in a loop of 5 times. -------------------------------------------- server.c #include <stdio.h> #include <stdlib.h> #include <sys/socket.h> #include <sys/types.h> #include <netinet/in.h> int main() { char server_message[256] = "Hi, Yes you have reached the server!"; char buf[200]; // create the server socket int server_socket; server_socket = socket(AF_INET,…

Develop a simulation program to simulate an 8-port Ethernet switch. The switch initially has no knowledge about the hosts connected to each port. It learns frame addresses and stores-and- forwards the frames. The input text file "in.txt" contains information of the incoming frames, one frame per line. There are 4 pieces of data per line: frame ID, arrival port, frame source address, and frame destination address. The frames arrive at the switch in the order of which they appear in the input file. Destination address "X" indicates a broadcast frame. The output text file "out.txt" has 8 lines. Each line lists all the frames departing from each port, here is an example: "in.txt" contains 5 incoming frames: F1 P2 B--A F2 P6 D--C F3 P5 E--B F4 P7 F--D F5 P6 D--X "out.txt" should list the departing frames on each port: P1: F1 F2 F5 P2: F2 F3 F5 P3: F1 F2 F5 P4: F1 F2 F5 P5: F1 F2 F5 P6: F1 F4 P7: F1 F2 F5 P8: F1 F2 F5 I

Can you use Python programming language to to this question? Thanks