diff --git a/README.md b/README.md
index 6ef2415..0e15e97 100644
--- a/README.md
+++ b/README.md
@@ -87,4 +87,52 @@ https://medium.com/@simplyianm/why-gos-structs-are-superior-to-class-based-inher
 croc.New()
 croc.SetX().... Set parameters
 croc.Send(file)
-croc.Receive()
\ No newline at end of file
+croc.Receive()
+
+
+# Conditions of state
+
+## Sender
+
+*Initialize*
+
+- Requests to join.
+- Generates X from pw.
+- Sender sends X to relay.
+
+*Is Y available?*
+
+- Use *Y* to generate its session key *k_A* and *H(k_A)*, and checks *H(H(k_A))*==*H(H(k_B))*. Abort here if it is incorrect.
+- Encrypts data using *k_A*. 
+- Connect to TCP ports of Relay.
+- Send the Relay authentication *H(k_A)*.
+
+*Are ports stapled?*
+
+- Send data over TCP
+
+
+## Recipient
+
+*Initialize*
+
+- Request to join
+
+*Is X available?*
+
+- Generate *Y*, session key *k_B*, and hashed session key *H(k_B)* using PAKE from secret *pw*.
+- Send the Relay *H(H(k_B))*
+
+*Is H(k_A) available?*
+
+- Verify that *H(k_A)* equals *H(k_B)*
+- Connect to TCP ports of Relay and listen.
+- Once file is received, Send close signal to Relay.
+
+
+## Relay
+
+*Is there a listener for sender and recipient?*
+
+- Staple connections.
+- Send out to all parties that connections are stapled.
\ No newline at end of file
diff --git a/src/server.go b/src/server.go
index 6efee9c..ee7a704 100644
--- a/src/server.go
+++ b/src/server.go
@@ -12,6 +12,10 @@ import (
 	"github.com/pkg/errors"
 )
 
+func (c *Croc) updateChannel(p payloadChannel) (r response, err error) {
+
+}
+
 func (c *Croc) startServer(tcpPorts []string, port string) (err error) {
 	// start cleanup on dangling channels
 	go c.channelCleanup()