http2 and TSL handshake errors

[gobr...@baroncelli.eu]

My Go application has both standard http (on port 80) and SSL (on port 443) enabled.

I continuously get these 3 kinds of error:


http2: server: error reading preface from client 79.49.31.60:37993: timeout waiting for client preface

http: TLS handshake error from 151.38.29.250:44235: EOF

http: TLS handshake error from 2.239.197.163:6742: read tcp x.xxx.xxx.xxx:443->2.239.197.163:6742: i/o timeout


Can anyone explain what these mean and depend on?


many thanks

Daniele