![]() ![]() As first step we only connect to a few ultrapeers and keep the connections, so we can send queries and read the results. With this we have the design of the basic contact management, so we get on towards the Leaf connection to the TagNet. If the servent dies, we don’t want the active contacts to die, so we need to save the active contacts from time to time, and add them to the contacts on startup. When we need contacts for connecting, we pop them from the list.Ĭontacts are being saved on quit. The value gets added when the contact gets added to the list. To make that efficient, every contact gets a value with which we can let python do the sorting. The most important feature is the sorted list of contacts. If we have too few contacts (=0), it can try to get new contacts, for example via UDPHostCatchers and GnutellaWebCaches for new contacts. It doesn’t do anything with these but checking if we have enough of them and making sure that when we add one too many, the best ones are being kept. ContactsĬontacts contains all the code for maintaining the other servents we connect to. # search = - or soīut lets start with the basic internal design. We want our simple servent to be easy to use for Python programmers, so it’s API should be similar to contacts = gnutella.Contacts() Ultrapeer connection to the tag query net.Sending queries and reading the replies. ![]() We will only do the ones written in bold. Basic DesignĪ full featured Gnutella servent has to perform a number of different actions. I use Python 3 for implementing it, because it’s really nice to use, and this makes the servent future proof. Here I’ll document my own implementation to guide you through creating a Gnutella servent yourself. But if you want a simple servent, which just can connect and search, you can actually write it quite quickly. Gnutella today is a pretty complex protocol, if you want to write a really full featured program. Creating a basic Gnutella Servent in Python Creating a basic Gnutella servent in Python ![]()
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