Update file README.md

README.md

@@ -8,7 +8,7 @@ Free wash connect. Hardcoded param, Not ready for public use.
 
 1. Deploy cracked https server with docker: `sudo docker run -p 443:443 -p 8000:8000 -d --name washcrack --restart=always recolic/washcrack`
 2. On your phone, access `YOUR_SERVER_IP:8000`, read `_a_help.html` to setup dns, download crt & apk, and install them.
-3. Modify DNS record on your phone. The following hostname should points to your vps.
+3. Modify DNS record on your phone. [(HOW-TO)](https://recolic.net/blog/post/android-modify-dns-record-hosts-without-root-reliable-way) The following hostname should points to your vps.
 
 ```
 getwashconnect.com
@@ -24,14 +24,30 @@ o424104.ingest.sentry.io
 1. Run `python -m http.server`. Use your android phone to download `crt` and `apk` from vps. Install the crt and apk.
 2. Run `httpd-standalone-ssl.py` in background. 
 
+or, instead, 
+
 ## If anything is going wrong
 
 Test if your DNS modification works with your browser or curl. HostsGo is known to be unreliable, do more attempts.
 
-## FAQ
+## FAQ / Known issue
 
 - After selecting washing machine, the price button shows "loading" animation, not allowing me to pay.
 
 This is a known issue. It happens on some machine, and you should just try another machine.
 
 It will fix itself after a few days. And I observed, other normal users also avoid this machine even if laundry room is super busy. I believe that machine is somehow broken, and they will send staff to fix it.
+
+- My HTTP server doesn't respond
+
+This is a known issue. If you open such naive HTTPS server to Internet, evil guy will send bad request to break it. 
+
+If you run `docker logs [ContainerName]`, you will see socket-related error msg. My workaround is running such script on server:
+
+```bash
+# replace washcrack with your container name
+while true; do
+	timeout 10s curl https://localhost -k | grep invalid.get || docker restart washcrack
+	sleep 300
+done
+```
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