rfqmsg: enforce strict version matching for requests

Ensure the request message version check validates only a specific
version number, rather than accepting any version greater than or
equal to the latest message number.

Author: ffranr

rfqmsg/buy_request.go

@@ -167,7 +167,7 @@ func (q *BuyRequest) Validate() error {
 	}
 
 	// Ensure that the message version is supported.
-	if q.Version > latestBuyRequestVersion {
+	if q.Version != latestBuyRequestVersion {
 		return fmt.Errorf("unsupported buy request message version: %d",
 			q.Version)
 	}

rfqmsg/sell_request.go

@@ -161,7 +161,7 @@ func (q *SellRequest) Validate() error {
 	}
 
 	// Ensure that the message version is supported.
-	if q.Version > latestSellRequestVersion {
+	if q.Version != latestSellRequestVersion {
 		return fmt.Errorf("unsupported sell request message version: "+
 			"%d", q.Version)
 	}