Re: Gopher over TLS
Sebastiaan Deckers <[email protected]>
| Newsgroups | gmane.network.gopher.general |
|---|---|
| Message-ID | <CADVGGb-uJcQ=ePqX1Zre_GvdoGZ9uM0AEbAMwgMBoGs26AphSg@mail.gmail.com> |
On Sat, Mar 14, 2020 at 7:28 AM James Tomasino <[email protected]> wrote: > gopher://cosmic.voyage serves TLS on port 7070. Previous discussions had > some people suggesting port 7443, 7000, or 71. A server that serves over > port 70 is likely to break things for non TLS clients. > A server that supports both TLS and plaintext can auto-detect the client's support. Two methods: A. Detect TLS: First byte of ClientHello is 0x16 -> process packet as TLS handshake (bytes 2-3 are the TLS version IIRC) B. Detect plaintext: First TCP packet ends with `\r\n` -> process packet as plaintext Gopher request Proof: I have implemented and deployed method B. Feel free to send both plaintext or TLS handshakes to commons.host:70 (multi-homed with GeoDNS but all nodes running the same code)