less debug, handle error if channel is closed

lib/src/grpcconnector.rs

@@ -123,13 +123,12 @@ where F : Fn(&[u8], u64) {
             use prost::Message;
             let mut encoded_buf = vec![];
     
-            match block.encode(&mut encoded_buf) {
+            if let Err(e) = block.encode(&mut encoded_buf) {
-                Ok(_) => c(&encoded_buf, block.height),
-                Err(e) => {
                 eprintln!("Error encoding block: {:?}", e);
                 break;
             }
-            }
+    
+            c(&encoded_buf, block.height);
         }
     
         if let Err(e) = ftx.send(Ok(())) {
@@ -178,19 +177,38 @@ pub fn fetch_blocks<F : 'static + std::marker::Send>(uri: &http::Uri, start_heig
     }
 }
 
-
 // get_address_txids GRPC call
-async fn get_address_txids<F : 'static + std::marker::Send>(uri: &http::Uri, address: String, 
+async fn get_address_txids<F : 'static + std::marker::Send>(
-        start_height: u64, end_height: u64, no_cert: bool, c: F) -> Result<(), Box<dyn std::error::Error>>
+    uri: &http::Uri, 
+    address: String, 
+    start_height: u64, 
+    end_height: u64, 
+    no_cert: bool, 
+    c: F
+) -> Result<(), Box<dyn std::error::Error>>
 where F : Fn(&[u8], u64) {
 
-    let mut client = get_client(uri, no_cert).await?;
+    let mut client = match get_client(uri, no_cert).await {
+        Ok(client) => client,
+        Err(e) => {
+            eprintln!("Error creating client: {:?}", e);
+            return Err(e.into());
+        }
+    };
+
     let start = Some(BlockId{ height: start_height, hash: vec!()});
     let end = Some(BlockId{ height: end_height, hash: vec!()});
 
     let request = Request::new(TransparentAddressBlockFilter{ address, range: Some(BlockRange{ start, end }) });
 
-    let maybe_response = client.get_address_txids(request).await?;
+    let maybe_response = match client.get_address_txids(request).await {
+        Ok(response) => response,
+        Err(e) => {
+            eprintln!("Error getting address txids: {:?}", e);
+            return Err(e.into());
+        }
+    };
+
     let mut response = maybe_response.into_inner();
 
     while let Some(tx) = response.message().await? {
@@ -234,8 +252,14 @@ where
     Ok(())
 }
 
-pub fn fetch_transparent_txids<F : 'static + std::marker::Send>(uri: &http::Uri, address: String, 
+pub fn fetch_transparent_txids<F : 'static + std::marker::Send>(
-        start_height: u64, end_height: u64, no_cert: bool, c: F) -> Result<(), String>
+    uri: &http::Uri, 
+    address: String, 
+    start_height: u64, 
+    end_height: u64, 
+    no_cert: bool, 
+    c: F
+) -> Result<(), String>
 where F : Fn(&[u8], u64) {
 
     let mut rt = match tokio::runtime::Runtime::new() {
@@ -252,7 +276,7 @@ pub fn fetch_transparent_txids<F : 'static + std::marker::Send>(uri: &http::Uri,
         Err(e) => {
             let e = format!("Error with get_address_txids runtime {:?}", e);
             error!("{}", e);
-            Err(e)
+            return Err(e)
         }
     }
 }