[Feature Request] Ability to specify Host Header & ServerName (SNI)

[arinc9]

I've seen #16 & #22 which is not dead clear of what I request. For example, v2ray has this feature:

      "streamSettings": {
        "network": "ws",
        "security": "tls",
        "tlsSettings": {
          "allowInsecure": true,
          "serverName": "www.youtube.com"
        },
    "wsSettings": {
      "headers": {
            "Host": "www.youtube.com"
          }
        }
      }

We can specify the domain to connect to the server. It'd be great to have an option like --ServerNamePrefix (to be used on wss) and--HostHeaderPrefix (to be used on ws and wss. Also set up ServerNamePrefix automatically to the same on wss if it was not specified) on wstunnel. This would only be used from the client so no need to launch the server with different commands.

[erebe]

Should not be too hard, I will try to do it during this week when I have time. I will let you know.

Out of curiosity, what are you doing with wstunnel ?

[arinc9]

I'm doing a research on restrictive networks in Iran, China, Egypt and a government-set school network across every state schools in Turkey. I'm analyzing how these networks work and the possible methods of bypassing the firewall.

With custom host headers, it makes it possible to bypass the domain filtering system, also to make it seem like the traffic is going to YouTube in this example.

[erebe]

You can try this pre-release for linux https://github.com/erebe/wstunnel/releases/download/v3.1/wstunnel-x64-linux there is 2 more command line argument --hostHeader and --tlsSNI that allow you to override what you want. For now, you need to specify both if you want to set the same value for both.

Let me know if it is working as you want. (I have done only basic checks with wireshark and unit tests)

[arinc9]

Looks like it sends host header twice

[erebe]

Should be fixed with the lastest build, can you re-download https://github.com/erebe/wstunnel/releases/download/v3.1/wstunnel-x64-linux

[arinc9]

Both ws and wss works now! Good job!

[arinc9]

@erebe Here's the windows build while you figure out cross-compiling.

wstunnel-x64-windows.zip