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Add jittered Electrum client connection max age #240

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Merged
DeviaVir merged 1 commit into from
Aug 6, 2026
+373 −12
Merged

Add jittered Electrum client connection max age #240

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14 changes: 14 additions & 0 deletions src/config.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@ pub struct Config {
pub daemon_conn_max_age: Option<Duration>,
pub cookie: Option<String>,
pub electrum_rpc_addr: SocketAddr,
pub electrum_rpc_conn_max_age: Option<Duration>,
pub http_addr: SocketAddr,
pub http_socket_file: Option<PathBuf>,
pub monitoring_addr: SocketAddr,
Expand Down Expand Up @@ -156,6 +157,13 @@ impl Config {
.help("Electrum server JSONRPC 'addr:port' to listen on (default: '127.0.0.1:50001' for mainnet, '127.0.0.1:60001' for testnet3, '127.0.0.1:40001' for testnet4 and '127.0.0.1:60401' for regtest)")
.takes_value(true),
)
.arg(
Arg::with_name("electrum_rpc_conn_max_age")
.long("electrum-rpc-conn-max-age")
.help("Maximum age (in seconds) of inbound Electrum RPC TCP connections. Each connection is closed at a randomly selected age between 50% and 100% of this value so clients reconnect gradually and load balancers can redistribute them. 0 = unlimited / never disconnect (default)")
.default_value("0")
.takes_value(true),
)
.arg(
Arg::with_name("http_addr")
.long("http-addr")
Expand Down Expand Up @@ -451,6 +459,11 @@ impl Config {
.unwrap_or(&format!("127.0.0.1:{}", default_electrum_port)),
"Electrum RPC",
);
let electrum_rpc_conn_max_age: Option<Duration> =
match value_t_or_exit!(m, "electrum_rpc_conn_max_age", u64) {
0 => None, // 0 = unlimited / never disconnect
secs => Some(Duration::from_secs(secs)),
};
let http_addr: SocketAddr = str_to_socketaddr(
m.value_of("http_addr")
.unwrap_or(&format!("127.0.0.1:{}", default_http_port)),
Expand Down Expand Up @@ -519,6 +532,7 @@ impl Config {
cookie,
utxos_limit: value_t_or_exit!(m, "utxos_limit", usize),
electrum_rpc_addr,
electrum_rpc_conn_max_age,
electrum_txs_limit: value_t_or_exit!(m, "electrum_txs_limit", usize),
electrum_banner,
rpc_logging: {
Expand Down
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