Reuse HTTP Clients

[refs]

File descriptors on the ocdav service, especially on the put handler was leaking http connections. This PR addresses this.

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

[ishank011]

Thanks a lot for this @refs! I was looking at the storage provider tus methods for the leaks and was pulling my hair. This should be good!

Can you fix the lint? We can merge it then

[refs]

Thanks a lot for this @refs! I was looking at the storage provider tus methods for the leaks and was pulling my hair. This should be good!

Can you fix the lint? We can merge it then

haha, goland, too lazy to configure watchers :D on it

[refs]

@ishank011 imports should be good now. waiting for checks

[butonic]

datagateway is also leaking ... @refs is adding it to this pr

[butonic]

@ishank011 we should double check all places where the rhttp.GetHttpClient() is called. The context that is passed is not used anyway. So we can initialize the client when starting the services. That will allow reusing connections 🚀

[ishank011]

@butonic definitely. I'll get to fixing these next. Thanks!