Question

I need a java program to download a series of file from a web server and I need to be able to close and then reopen the tcp/ip connection between each file download.

Not sure how to do this.

Answer 1

Here is a low-level way of retrieving any information from not only socket 80 (http) but generically to retrieve mail, do a ‘telnet’ etc:

socket = new Socket();
socket.connect(new InetSocketAddress(host, port));
reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));

now to do a call to retrieve a page, send the get command, set the content-type, and send two ‘\n’.

There is a higher-level solution:
Send HTTP GET request with header