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Don't panic in case of an invalid block header height

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Fix #784
This commit is contained in:
Roman Zeyde 2022-11-01 20:47:57 +02:00
parent bb382a6dce
commit 4030e12a33
1 changed files with 12 additions and 9 deletions
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21
src/electrum.rs
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@ -220,17 +220,20 @@ impl Rpc {
fn block_headers(&self, (start_height, count): (usize, usize)) -> Result<Value> {
let chain = self.tracker.chain();
let max_count = 2016usize;
let count = std::cmp::min(
std::cmp::min(count, max_count),
chain.height() - start_height + 1,
);
let heights = start_height..(start_height + count);
let hex_headers = String::from_iter(
heights.map(|height| serialize(chain.get_block_header(height).unwrap()).to_hex()),
// return only the available block headers
let end_height = std::cmp::min(
chain.height() + 1,
start_height + std::cmp::min(count, max_count),
);
let heights = start_height..end_height;
let count = heights.len();
let hex_headers = heights.filter_map(|height| {
chain
.get_block_header(height)
.map(|header| serialize(header).to_hex())
});
Ok(json!({"count": count, "hex": hex_headers, "max": max_count}))
Ok(json!({"count": count, "hex": String::from_iter(hex_headers), "max": max_count}))
}
fn estimate_fee(&self, (nblocks,): (u16,)) -> Result<Value> {