1 files changed, 6 insertions, 1 deletions
diff --git a/README.md b/README.md
index df6045a..354ac2d 100644
--- a/README.md
+++ b/README.md
@@ -2,4 +2,9 @@
 * https://github.com/kokke/tiny-AES-c
 
 # todo
-* implement BEP-0042 DHT security extension
+* implement BEP-0042 DHT security extension, requires crc32c library
+* fix announcements
+
+# known non-posix
+* `MSG_DONTWAIT`, `SOCK_NONBLOCK`: replace with `fcntl` `O_NONBLOCK`
+* `MSG_NOSIGNAL` on `sendto`: replace with `SIGPIPE` signal handler