Correct feerate units

[ldk-sample] / src / convert.rs

diff --git a/src/convert.rs b/src/convert.rs
index a652980e3ddbd9a20e6cbf5e54092938a1ffb5ac..64039233e7d5800fc9c1c147c2e800c328ced0fd 100644 (file)
--- a/src/convert.rs
+++ b/src/convert.rs
@@ -51,7 +51,7 @@ impl TryInto<NewAddress> for JsonResponse {
 }
 
 pub struct FeeResponse {
-       pub feerate: Option<u32>,
+       pub feerate_sat_per_kw: Option<u32>,
        pub errored: bool,
 }
 
@@ -61,8 +61,13 @@ impl TryInto<FeeResponse> for JsonResponse {
                let errored = !self.0["errors"].is_null();
                Ok(FeeResponse {
                        errored,
-                       feerate: match self.0["feerate"].as_f64() {
-                               Some(fee) => Some((fee * 100_000_000.0).round() as u32),
+                       feerate_sat_per_kw: match self.0["feerate"].as_f64() {
+                               // Bitcoin Core gives us a feerate in BTC/KvB, which we need to convert to
+                               // satoshis/KW. Thus, we first multiply by 10^8 to get satoshis, then divide by 4
+                               // to convert virtual-bytes into weight units.
+                               Some(feerate_btc_per_kvbyte) => {
+                                       Some((feerate_btc_per_kvbyte * 100_000_000.0 / 4.0).round() as u32)
+                               }
                                None => None,
                        },
                })