From fc978cbca6472a9d1b9becddf42bdff10b0c3e4d Mon Sep 17 00:00:00 2001
From: Eugene Prodan <eugene.prodan@namecheap.com>
Date: Fri, 11 Jun 2021 22:11:10 +0300
Subject: [PATCH] docs: added interaction diagram

---
 docs/interaction_diagram.txt | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 docs/interaction_diagram.txt

diff --git a/docs/interaction_diagram.txt b/docs/interaction_diagram.txt
new file mode 100644
index 0000000..5ec9a11
--- /dev/null
+++ b/docs/interaction_diagram.txt
@@ -0,0 +1,32 @@
+@startuml
+actor       Browser as user
+participant Proxy as proxy
+participant "Captcha Provider" as captcha
+participant "Backend" as backend
+user -> proxy: Request /resource?foo=bar
+activate proxy
+proxy -> user: Redirect /{captcha_url}
+deactivate proxy
+
+user -> captcha: Submit challenge
+activate captcha
+captcha -> user: Pass challenge result hash
+deactivate captcha
+user -> proxy: Submit captcha form
+
+activate proxy
+proxy -> captcha: Validate challenge results
+activate captcha
+captcha -> proxy: Pass validation results
+deactivate captcha
+proxy -> user: Redirect /resource?foo=bar
+deactivate proxy
+user -> proxy: Request /resource?foo=bar
+activate proxy
+proxy -> backend: Request /resource?foo=bar
+activate backend
+backend -> proxy: Serve /resource?foo=bar
+deactivate backend
+proxy -> user: Serve /resource?foo=bar
+deactivate proxy
+@enduml
\ No newline at end of file