In the post-commit hook the request to url to notify subversion commits takes long time to reply (3-5 min), using wget the error showed is:

Connecting to myjenkins:8080... connected
HTTP request sent, awaiting response... Read error (Connection timed out) in headers.

This is reproducible in each try, using the next timeout values: 2, 4, 8, 16, 32, 64, 128, 256, 1024, 2048...