Download source code - 9. I was thinking on using Web Services since most of the data will be sent using XML, but could not help the lure of investigating the way I could create my own TCP based service and all. Well, after surfing through a lot of articles, code samples, and books, I came up with the following implementation, which I hope will be useful to other people
In the TCP Echo client a socket is created.
Using the socket a connection is made to the server using the connect function. After a connection is establishedwe send messages input from the user and display the data received from the server using send and read functions. Then we bind the socket.
After the binding is succesfulwe send messages input from the user and display the data received from the server using sendto and recvfrom functions.
After bindingthe process listens for incoming connections.
Then an infinite loop is started to process the client requests for connections. After a connection is requestedit accepts the connection from the client machine and forks a new process. The new process receives data from the client using recv function and echoes the same data using the send function.
Please note that this server is capable of handling multiple clients as it forks a new process for every client trying to connect to the server. The process receives data from the client using recvfrom function and echoes the same data using the sendto function.
Please note that this server is capable of handles multiple clients automatically as UDP is a datagram based protocol hence no exclusive connection is required to a client in this case.Write a stream-based echo server and a client sending messages to it, and receiving back each message in turn.
Hint: Modify the stream-based TCP client and server programs in this chapter or similar programs to transfer multiple messages back and forth (until the client terminates the connection).
Writing a C-based Client/Server The next piece of information you need is the port number. The port is an agreed upon connection point between the client and server. Reading from and Writing to a Socket. It reads input from the user on the standard input stream, and then forwards that text to the echo server by writing the text to the socket.
The server echoes the input back through the socket to the client.
The client program reads and displays the data passed back to it from the server. We will now use the elementary functions from the previous chapter to write a complete TCP client/server example.
Our simple example is an echo server that performs the following steps: The client reads a line of text from its standard input and writes the line to the server.
A Simple Go TCP Server and TCP Client February 2, - pm Golang is a new-ish programming language that has really come into its own. It is a portable language which runs across many platforms; but allows advanced system and memory access unlike other web programming languages. The echo server is a simple program that echoes input that is sent to the program through the network.
This application provides a good starting point for investigating how to write .