Ben Chuanlong Du's Blog

It is never too late to learn.

Tips on Network Protocols

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

TCP/IP and UDP/IP are low-level data transfer protocols.

HTTP, FTP, SMTP, WebSocket are high-level data transfer protocols.

WebSocket persists a connection and use it for bidirectional data transfering. It …

Tips on httpd

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

  1. A directory must be executable by others in order to show up. Even if a directory show up, it does NOT mean that you can access it. It must be readable …

Speed Up sbt in China

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Currently sbt uses https by default. However, the Great Firewall of China makes https visits to websites out of China slow.

Proxy

If you have access to proxy server, it is …