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It would be really handy for debugging and stats if client drivers would announce their name and version when they connect to the server, something like the user-agent strings that web browsers send to httpd's, e.g. by adding a new API command that simply gave the driver version info, and creating a convention that drivers should send it on connect. Obviously it would have to be optional in order to not break old clients. However, I see the meta driver specification is in progress, so that seems like a good opportunity to add this. These would be of considerable help in troubleshooting various version-incompatibility problems, and would also help figure out what drivers were the most popular for purposes of allocating developer attention. It's common for people to connect to a single MongoDB server with a lot of different clients and it would be good to be able to tell from the server logs what has been happening.
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