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this information is routed to the system, since a unique ip address is designated to it. to complete a client server architecture we would have to go through the following steps − following diagram shows the complete sequence of the calls used by client and server to communicate with each other − the socket() call is the first call in establishing a network connection is creating a socket. the sockets created by socket() call are useless until they are bound to a hostname and a port number.
if this is a server program, then it is required to issue a call to listen() on the specified port to listen, i.e., wait for the incoming requests. you already have seen socket() call syntax and it will remain similar to server socket() call, but here is the syntax for connect() call − here scoket is the socket descriptor returned by socket() call issued by the client and address is a socket address similar to bind call, except that it contains the ip address of the remote server. now let’s start our client at the command prompt, which will connect to the server and read message sent by the server and displays the same on the screen as follows − note − if you are giving the actual ip address in dot notation, then it is recommended to provide ip address in the same format in both client as well as server to avoid any confusion.
like our clients, we’ll still specify “tcp” here. in our sample, we’ll use port 9000, but you can use any port that’s not currently in #!/usr/bin/perl -w use io::socket; use net::hostent; # for oo version of to explain above mentioned socket concept we will take an example of client – server programming using perl. the below example is a very simple tcp server script written in perl, which uses the anyevent module , perl socket, perl socket, perl io::socket, perl close socket, perl echo server.
example of a perl tcp server using socket module. #!/usr/bin/perl -w use io:: socket; $port = 9999; $server_socket like our clients, we’ll still specify “tcp” here. in our sample, we’ll use port 9000, but you can use any port that’s not currently in #!/usr/bin/perl -w use io::socket; use net::hostent; # for oo version of use io::socket; $server = io::socket::inet->new(localport => $server_port, type => sock_stream, reuse => 1, , perl socket recv, perl script example, perl script example, inheritance in perl example, perl mailx example
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