[doc] Add Connection stability section

Author: g3force

cmd/ssl-team-client/README.md

@@ -9,14 +9,17 @@ The .proto files can be found [here](../../pkg/refproto).
 
 The default port is `10008` for plain connections and 10108 for TLS encrypted connections. The IP to connect to can be determined using the multicast referee messages.
 
-## Connection Sequence
+## Connection sequence
 The connection is described in the following sequence diagram:
 
 ![sequence diagram](https://www.websequencediagrams.com/cgi-bin/cdraw?lz=IyBodHRwczovL3d3dy53ZWJzZXF1ZW5jZWRpYWdyYW1zLmNvbS8KClRlYW0tPkNvbnRyb2xsZXI6IGVzdGFibGlzaCBUQ1AgY29ubmVjdGlvbgoAGwoAIw5nZW5lcmF0ZSBuZXcgdG9rZQAdDlRlYW06IABYClJlcGx5ICgAJAYgKQBvE1RlYW1SZWdpc3RyYXRpb24gKCB0ZWFtTmFtZSwgWwBdBiwgc2lnbmF0dXJlIF0gKQCBEQwAgUEOdmVyaWZ5AIEGEgARFQBLCQCBHSVvayB8IHJlamVjdCApCgpsb29wCmFsdACBKAUgcmVxdWVzdHMgYSBjaGFuZ2UAgVIXVG8Agg8MAC8FAEozZWxzZSBjAIM9CQByDGRlY2lzAIMwEACDBRBUbwCCbwYAegYATV1uZAplbmQKCg&s=napkin)
 
 Source to generate the diagram: [communication_team.txt](./communication_team.txt)
 
-## Secure Connection
+## Connection stability
+Clients should deal with connection losts (reconnect). The game-controller may be restarted due to various reasons like crashes or other technical issues. Teams are not allowed to touch their system to reconnect to the game-controller, except during timeouts.
+
+## Secure connection
 The connection can optionally be secured by signing each request using a RSA key.
 
 The private key is used on the client side to sign the complete message, excluding the signature itself. 
@@ -47,4 +50,4 @@ go run cmd/ssl-team-client/main.go
 ``` 
 Pass it the `-h` parameter to get the available options.
 
-By default, it tries to connect as "Test Team", which is also available in the UI. Make sure to select this team for yellow or blue.
+By default, it tries to connect as "Test Team", which is also available in the UI. Make sure to select this team for yellow or blue.