diff --git a/client.go b/client.go
index ad223040..de48e032 100644
--- a/client.go
+++ b/client.go
@@ -135,6 +135,8 @@ func (c *Client[Req, Res]) CallServerStream(ctx context.Context, request *Reques
 		return nil, c.err
 	}
 	conn := c.newConn(ctx, StreamTypeServer)
+	request.spec = conn.Spec()
+	request.peer = conn.Peer()
 	mergeHeaders(conn.RequestHeader(), request.header)
 	// Send always returns an io.EOF unless the error is from the client-side.
 	// We want the user to continue to call Receive in those cases to get the