add support for streaming requests. cleanup watcher initilisation

client/rpc_stream.go

@@ -0,0 +1,23 @@
+package client
+
+import (
+	rpc "github.com/youtube/vitess/go/rpcplus"
+)
+
+type rpcStream struct {
+	request Request
+	call    *rpc.Call
+	client  *rpc.Client
+}
+
+func (r *rpcStream) Request() Request {
+	return r.request
+}
+
+func (r *rpcStream) Error() error {
+	return r.call.Error
+}
+
+func (r *rpcStream) Close() error {
+	return r.client.Close()
+}