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tailscale/net/captivedetection
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Brad Fitzpatrick 3b93fd9c44 net/captivedetection: replace 10k log lines with ... less 
We see tons of logs of the form:

    2024/11/15 19:57:29 netcheck: [v2] 76 available captive portal detection endpoints: [Endpoint{URL="http://192.73.240.161/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.240.121/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.240.132/generate_204", StatusCode=204, ExpectedContent="",
11:58SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://209.177.158.246/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://209.177.158.15/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://199.38.182.118/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.243.135/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.243.229/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.243.141/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://45.159.97.144/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://45.159.97.61/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://45.159.97.233/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://45.159.98.196/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://45.159.98.253/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://45.159.98.145/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://68.183.90.120/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://209.177.156.94/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.248.83/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://209.177.156.197/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://199.38.181.104/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://209.177.145.120/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://199.38.181.93/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://199.38.181.103/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://102.67.165.90/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://102.67.165.185/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://102.67.165.36/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://176.58.90.147/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://176.58.90.207/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://176.58.90.104/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://162.248.221.199/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://162.248.221.215/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://162.248.221.248/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://185.34.3.232/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://185.34.3.207/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://185.34.3.75/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://208.83.234.151/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://208.83.233.233/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://208.72.155.133/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://185.40.234.219/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://185.40.234.113/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://185.40.234.77/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://43.245.48.220/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://43.245.48.50/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://43.245.48.250/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.252.65/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.252.134/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://208.111.34.178/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://43.245.49.105/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://43.245.49.83/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://43.245.49.144/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://176.58.92.144/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://176.58.88.183/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://176.58.92.254/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://148.163.220.129/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://148.163.220.134/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://148.163.220.210/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.242.187/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.242.28/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.242.204/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://176.58.93.248/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://176.58.93.147/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://176.58.93.154/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://192.73.244.245/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://208.111.40.12/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://208.111.40.216/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://103.6.84.152/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://205.147.105.30/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://205.147.105.78/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://102.67.167.245/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://102.67.167.37/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://102.67.167.188/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://103.84.155.178/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://103.84.155.188/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://103.84.155.46/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=true, Provider=DERPMapOther} Endpoint{URL="http://controlplane.tailscale.com/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=false, Provider=Tailscale} Endpoint{URL="http://login.tailscale.com/generate_204", StatusCode=204, ExpectedContent="", SupportsTailscaleChallenge=false, Provider=Tailscale}]

That can be much shorter.

Also add a fast exit path to the concurrency on match. Doing 5 all at
once is still pretty gratuitous, though.

Updates #1634
Fixes #13019

Change-Id: Icdbb16572fca4477b0ee9882683a3ac6eb08e2f2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-11-15 15:25:31 -08:00
..
captivedetection_test.go net/captivedetection: replace 10k log lines with ... less 2024-11-15 15:25:31 -08:00
captivedetection.go net/captivedetection: replace 10k log lines with ... less 2024-11-15 15:25:31 -08:00
endpoints.go health: introduce captive-portal-detected Warnable (#12707) 2024-07-26 11:25:55 -07:00
rawconn_apple.go health: introduce captive-portal-detected Warnable (#12707) 2024-07-26 11:25:55 -07:00
rawconn.go health: introduce captive-portal-detected Warnable (#12707) 2024-07-26 11:25:55 -07:00