ignore mode in local-dns local resolver

ref shadowsocks/shadowsocks-android#2635
This commit is contained in:
zonyitoo
2020-12-28 13:23:00 +08:00
parent 303f96c61f
commit 91d25d3cc0
2 changed files with 20 additions and 28 deletions
Generated
+3 -3
View File
@@ -2061,7 +2061,7 @@ checksum = "efd1f82c56340fdf16f2a953d7bda4f8fdffba13d93b00844c25572110b26079"
[[package]]
name = "trust-dns-proto"
version = "0.20.0-alpha.3"
source = "git+https://github.com/bluejekyll/trust-dns.git?branch=main#540906be77b03dc59494aef453b2dbcc875a2a0a"
source = "git+https://github.com/bluejekyll/trust-dns.git?branch=main#57245de7d73008c9f960ba8c952e2dbcee54bb84"
dependencies = [
"async-trait",
"cfg-if 1.0.0",
@@ -2085,7 +2085,7 @@ dependencies = [
[[package]]
name = "trust-dns-resolver"
version = "0.20.0-alpha.3"
source = "git+https://github.com/bluejekyll/trust-dns.git?branch=main#540906be77b03dc59494aef453b2dbcc875a2a0a"
source = "git+https://github.com/bluejekyll/trust-dns.git?branch=main#57245de7d73008c9f960ba8c952e2dbcee54bb84"
dependencies = [
"cfg-if 1.0.0",
"futures-util",
@@ -2109,7 +2109,7 @@ dependencies = [
[[package]]
name = "trust-dns-rustls"
version = "0.20.0-alpha.3"
source = "git+https://github.com/bluejekyll/trust-dns.git?branch=main#540906be77b03dc59494aef453b2dbcc875a2a0a"
source = "git+https://github.com/bluejekyll/trust-dns.git?branch=main#57245de7d73008c9f960ba8c952e2dbcee54bb84"
dependencies = [
"futures-channel",
"futures-io",
@@ -678,36 +678,28 @@ impl DnsClient {
message.set_recursion_desired(true);
message.add_query(query.clone());
let mut last_err = io::Error::new(ErrorKind::InvalidData, "resolve empty");
// Query UDP then TCP
if self.mode.enable_udp() {
match self
.client_cache
.lookup_udp_local(local_addr, message.clone(), self.context.connect_opts_ref())
.await
{
Ok(msg) => return Ok(msg),
Err(err) => {
last_err = err.into();
}
}
}
let udp_query =
self.client_cache
.lookup_udp_local(local_addr, message.clone(), self.context.connect_opts_ref());
let tcp_query = async move {
// Send TCP query after 500ms, because UDP will always return faster than TCP, there is no need to send queries simutaneously
time::sleep(Duration::from_millis(500)).await;
if self.mode.enable_tcp() {
match self
.client_cache
self.client_cache
.lookup_tcp_local(local_addr, message, self.context.connect_opts_ref())
.await
{
Ok(msg) => return Ok(msg),
Err(err) => {
last_err = err.into();
}
}
}
};
Err(last_err)
tokio::pin!(udp_query);
tokio::pin!(tcp_query);
match future::select(udp_query, tcp_query).await {
Either::Left((Ok(m), ..)) => Ok(m),
Either::Left((Err(..), next)) => next.await.map_err(From::from),
Either::Right((Ok(m), ..)) => Ok(m),
Either::Right((Err(..), next)) => next.await.map_err(From::from),
}
}
}