Update session code outline.

initiatorpool/errors.go

@@ -4,8 +4,8 @@ import "errors"
 import "fmt"
 
 var (
-	InvalidIdleTimeout  = errors.New("idle timeout cannot be negative")
-	InvalidMaxQueueSize = errors.New("maximum queue size cannot be negative")
+	InvalidKeepaliveTimeout = errors.New("keepalive timeout cannot be negative")
+	InvalidMaxQueueSize     = errors.New("maximum queue size cannot be negative")
 )
 
 func NewConfigError(text string) error {
@@ -15,3 +15,7 @@ func NewConfigError(text string) error {
 func NewPoolError(text string) error {
 	return fmt.Errorf("pool error: %s", text)
 }
+
+func NewWorkerError(id string, text string) error {
+	return fmt.Errorf("worker %q error: %s", id, text)
+}