René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Thread-safe client implementation","articleBody":"Hello, I noticed that the README suggests starting a separate thread to call `listen()`, but I don't believe the underlying socket is thread-safe (unless I'm missing something of course).\r\n\r\nI believe I've worked out [an implementation](https://gist.github.com/tobiasmcnulty/af5f816fe9b801631b0b4d636fa1e6a7) that at least allows `send_message()` to avoid clobbering any enquire_link or other PDUs the socket might be exchanging at the time `send_message()` is called.\r\n\r\nWould it be worth cleaning this up and submitting a PR? If so, how would you like me to approach it? A few options I can think of:\r\n\r\n1. Include the minimal hooks necessary (if any) for someone to implement their own client outside of smpplib proper\r\n2. Update the existing client to use [the thread-safe socket implementation](https://stackoverflow.com/a/51105047/166053)\r\n3. Include an alternate `ThreadSafeClient` implementation, as in [the linked gist](https://gist.github.com/tobiasmcnulty/af5f816fe9b801631b0b4d636fa1e6a7)\r\n\r\nThanks for this library and in advance for any input you may have!","author":{"url":"https://github.com/tobiasmcnulty","@type":"Person","name":"tobiasmcnulty"},"datePublished":"2021-11-30T23:33:39.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/187/python-smpplib/issues/187"}