From 1597b09c4a9140cd0f1320948c7a8fb237af58fb Mon Sep 17 00:00:00 2001
From: Svyatoslav Nikolsky <svyatonik@gmail.com>
Date: Wed, 28 Oct 2020 09:52:12 +0300
Subject: [PATCH] fix https://github.com/paritytech/jsonrpsee/issues/143

---
 src/client.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/client.rs b/src/client.rs
index 2c99daf4ec..25c8c009ee 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -385,7 +385,7 @@ where
             Either::Right(Ok(RawClientEvent::SubscriptionNotif { request_id, result })) => {
                 // TODO: unsubscribe if channel is closed
                 let (notifs_tx, _) = active_subscriptions.get_mut(&request_id).unwrap();
-                if notifs_tx.send(result).await.is_err() {
+                if let Some(Err(_)) = notifs_tx.send(result).now_or_never() {
                     let (_, unsubscribe) = active_subscriptions.remove(&request_id).unwrap();
                     client
                         .subscription_by_id(request_id)