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web: support Host 100.100.100.100:80 in tailscaled web server

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This makes the web server running inside tailscaled on 100.100.100.100:80 support requests with `Host: 100.100.100.100:80` and its IPv6 equivalent.

Prior to this commit, the web server replied to such requests with a redirect to the node's Tailscale IP:5252.

Fixes https://github.com/tailscale/tailscale/issues/14415

Signed-off-by: Alex Klyubin <klyubin@gmail.com>
This commit is contained in:
klyubin 2025-03-19 10:46:32 -06:00 committed by GitHub
parent 8d84720edb
commit 3a2c92f08e
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2 changed files with 12 additions and 1 deletions
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3
client/web/web.go
View File

@ -335,7 +335,8 @@ func (s *Server) requireTailscaleIP(w http.ResponseWriter, r *http.Request) (han
ipv6ServiceHost = "[" + tsaddr.TailscaleServiceIPv6String + "]"
)
// allow requests on quad-100 (or ipv6 equivalent)
if r.Host == ipv4ServiceHost || r.Host == ipv6ServiceHost {
host := strings.TrimSuffix(r.Host, ":80")
if host == ipv4ServiceHost || host == ipv6ServiceHost {
return false
}

10
client/web/web_test.go
View File

@ -1177,6 +1177,16 @@ func TestRequireTailscaleIP(t *testing.T) {
target: "http://[fd7a:115c:a1e0::53]/",
wantHandled: false,
},
{
name: "quad-100:80",
target: "http://100.100.100.100:80/",
wantHandled: false,
},
{
name: "ipv6-service-addr:80",
target: "http://[fd7a:115c:a1e0::53]:80/",
wantHandled: false,
},
}
for _, tt := range tests {