--- /dev/null
+# interface http\Client\Curl\User
+
+Interface to an user event loop implementation for http\Client::configure()'s $use_eventloop option.
+
+> ***NOTE:***
+> This interface was added in v2.6.0, resp. v3.1.0.
+
+## Constants:
+
+* POLL_NONE
+ No action.
+* POLL_IN
+ Poll for read readiness.
+* POLL_OUT
+ Poll for write readiness.
+* POLL_INOUT
+ Poll for read/write readiness.
+* POLL_REMOVE
+ Stop polling for activity on this descriptor.