readme

Author: Frando

Diff for: README.md

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+# async-std-udp-test
+
+example for [this issue](https://github.com/async-rs/async-std/issues/955)
+
+A UDP socket sends messages to another UDP socket. The reading side polls a socket through a manual poll function. This works in async-std 1.6.2 (as pinned in Cargo.toml) but seems to fail when changin to async-std 1.9.
+