Return txid from send

lib/src/grpcconnector.rs

@@ -1,10 +1,11 @@
-
 use log::{error};
 
 use std::sync::{Arc};
 use std::net::ToSocketAddrs;
 use std::net::SocketAddr;
 
+use json::object;
+
 use futures::{Future};
 use futures::stream::Stream;
 
@@ -280,7 +281,16 @@ pub fn broadcast_raw_tx(uri: &http::Uri, no_cert: bool, tx_bytes: Box<[u8]>) ->
                 .and_then(move |response| {
                     let sendresponse = response.into_inner();
                     if sendresponse.error_code == 0 {
-                        Ok(format!("Successfully broadcast Tx: {}", sendresponse.error_message))
+                        let mut txid = sendresponse.error_message;
+                        if txid.starts_with("\"") && txid.ends_with("\"") {
+                            txid = txid[1..txid.len()-1].to_string();
+                        }
+
+                        let r = object!{
+                            "result" => "success",
+                            "txid" => txid,
+                        };
+                        Ok(r.pretty(2))
                     } else {
                         Err(format!("Error: {:?}", sendresponse))
                     }

lib/src/lightclient.rs

@@ -771,7 +771,7 @@ impl LightClient {
                 Ok(k)  => k,
                 Err(e) => e,
             },
-            Err(e)        => format!("No Tx to broadcast. Error was: {}", e)
+            Err(e)        => format!("Error: No Tx to broadcast. Error was: {}", e)
         }
     }
 }

lib/src/lightwallet/data.rs

@@ -386,6 +386,7 @@ pub struct WalletTx {
     // All outgoing sapling sends to addresses outside this wallet
     pub outgoing_metadata: Vec<OutgoingTxMetadata>,
 
+    // Whether this TxID was downloaded from the server and scanned for Memos
     pub full_tx_scanned: bool,
 }