integration with jsonrpsee v2 (#214)

* hacky integration with jsonrpsee v2

* stray todos

* fmt

* add http support

* make test build compile

* Update src/rpc.rs

* bring back set_client

* use crates.io version jsonrpsee

* WIP: workaround for embedded subxt client (#236)

* workaround for embedded subxt client

Signed-off-by: Gregory Hill <gregorydhill@outlook.com>

* increase default channel size on subxt client

Signed-off-by: Gregory Hill <gregorydhill@outlook.com>

* remove client tests due to inference problem on From

Signed-off-by: Gregory Hill <gregorydhill@outlook.com>

* add comments for missing impls

* more verbose errors

* make subscription notifs buffer bigger

* fmt

Co-authored-by: Greg Hill <gregorydhill@outlook.com>

src/subscription.rs

@@ -14,7 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with substrate-subxt.  If not, see <http://www.gnu.org/licenses/>.
 
-use jsonrpsee::client::Subscription;
+use jsonrpsee_types::error::Error as RpcError;
+use jsonrpsee_ws_client::WsSubscription as Subscription;
 use sp_core::storage::StorageChangeSet;
 use std::collections::VecDeque;
 
@@ -86,7 +87,14 @@ impl<'a, T: Runtime> EventSubscription<'a, T> {
             if self.finished {
                 return None
             }
-            let change_set = self.subscription.next().await;
+            let change_set = match self.subscription.next().await {
+                Some(c) => c,
+                None => {
+                    return Some(Err(
+                        RpcError::Custom("RPC subscription dropped".into()).into()
+                    ))
+                }
+            };
             if let Some(hash) = self.block.as_ref() {
                 if &change_set.block == hash {
                     self.finished = true;