[#366] rpc/client: Inherit read-write gRPC timeout from client

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

rpc/client/connect.go

@@ -15,7 +15,10 @@ func (c *Client) createGRPCClient() (err error) {
 			return
 		}
 
-		c.gRPCClient = grpc.New(grpc.WithClientConnection(c.conn))
+		c.gRPCClient = grpc.New(
+			grpc.WithClientConnection(c.conn),
+			grpc.WithRWTimeout(c.rwTimeout),
+		)
 	})
 
 	return

rpc/client/options.go

@@ -20,17 +20,22 @@ type cfg struct {
 	addr string
 
 	dialTimeout time.Duration
+	rwTimeout   time.Duration
 
 	tlsCfg *tls.Config
 
 	conn *grpc.ClientConn
 }
 
-const defaultDialTimeout = 5 * time.Second
+const (
+	defaultDialTimeout = 5 * time.Second
+	defaultRWTimeout   = 1 * time.Minute
+)
 
 func defaultCfg() *cfg {
 	return &cfg{
 		dialTimeout: defaultDialTimeout,
+		rwTimeout:   defaultRWTimeout,
 	}
 }
 
@@ -96,6 +101,16 @@ func WithDialTimeout(v time.Duration) Option {
 	}
 }
 
+// WithRWTimeout returns option to specify timeout
+// for reading and writing single gRPC message.
+func WithRWTimeout(v time.Duration) Option {
+	return func(c *cfg) {
+		if v > 0 {
+			c.rwTimeout = v
+		}
+	}
+}
+
 // WithTLSCfg returns option to specify
 // TLS configuration.
 //