document timeouts in specs

specs/CONTROL.md

@@ -87,6 +87,7 @@ Request{
   ConnectRequest: {
     Peer: <peer id>,
     Addrs: [<addr>, ...],
+    timeout: time, // optional, in seconds
   },
 }
 ```
@@ -134,6 +135,7 @@ Request{
   StreamOpenRequest: {
     Peer: <peer id>,
     Proto: [<protocol string>, ...],
+    timeout: time, // optional, in seconds
   },
 }
 ```

specs/DHT.md

@@ -30,6 +30,8 @@ messages have a `Type` parameter that specifies whether a response marks the
 the `END` of a stream of messages. Single-value responses will simply return a
 single `DHTResponse` with type `VALUE`.
 
+All `DHTRequest`s also take an optional timeout in seconds.
+
 ### Protocol Requests
 
 *Protocols described in pseudo-go. Items of the form [item, ...] are lists of