Implemented setting bind-host for DNS-resolver.

src/dns/context.rs

@@ -46,6 +46,7 @@ pub struct ServerContext {
     pub cache: SynchronizedCache,
     pub filters: Vec<Box<dyn DnsFilter + Sync + Send>>,
     pub client: Box<dyn DnsClient + Sync + Send>,
+    pub dns_host: String,
     pub dns_port: u16,
     pub api_port: u16,
     pub resolve_strategy: ResolveStrategy,
@@ -70,6 +71,7 @@ impl ServerContext {
             cache: SynchronizedCache::new(),
             filters: Vec::new(),
             client: Box::new(DnsNetworkClient::new(34255)),
+            dns_host: String::from("0.0.0.0"),
             dns_port: 53,
             api_port: 5380,
             resolve_strategy: ResolveStrategy::Recursive,
@@ -127,6 +129,7 @@ pub mod tests {
             cache: SynchronizedCache::new(),
             filters: Vec::new(),
             client: Box::new(DnsStubClient::new(callback)),
+            dns_host: String::from("0.0.0.0"),
             dns_port: 53,
             api_port: 5380,
             resolve_strategy: ResolveStrategy::Recursive,

src/dns/server.rs

@@ -175,7 +175,7 @@ impl DnsServer for DnsUdpServer {
     /// This method takes ownership of the server, preventing the method from being called multiple times.
     fn run_server(self) -> Result<()> {
         // Bind the socket
-        let socket = UdpSocket::bind(("::", self.context.dns_port))?;
+        let socket = UdpSocket::bind((self.context.dns_host.as_str(), self.context.dns_port))?;
 
         // Spawn threads for handling requests
         for thread_id in 0..self.thread_count {
@@ -290,7 +290,7 @@ impl DnsTcpServer {
 
 impl DnsServer for DnsTcpServer {
     fn run_server(mut self) -> Result<()> {
-        let socket = TcpListener::bind(("::", self.context.dns_port))?;
+        let socket = TcpListener::bind((self.context.dns_host.as_str(), self.context.dns_port))?;
 
         // Spawn threads for handling requests, and create the channels
         for thread_id in 0..self.thread_count {