electrum: add rustls as the default ssl implementation

core/electrum_client/examples/plaintext.rs

@@ -0,0 +1,9 @@
+extern crate electrum_client;
+
+use electrum_client::Client;
+
+fn main() {
+    let mut client = Client::new("kirsche.emzy.de:50001").unwrap();
+    let res = client.server_features();
+    println!("{:#?}", res);
+}

core/electrum_client/examples/ssl.rs

@@ -0,0 +1,13 @@
+extern crate electrum_client;
+
+use electrum_client::Client;
+
+fn main() {
+    let mut client = Client::new_ssl(
+        "electrum2.hodlister.co:50002",
+        Some("electrum2.hodlister.co"),
+    )
+    .unwrap();
+    let res = client.server_features();
+    println!("{:#?}", res);
+}

core/electrum_client/examples/tor.rs

@@ -0,0 +1,21 @@
+extern crate electrum_client;
+
+use electrum_client::Client;
+
+fn main() {
+    // NOTE: This assumes Tor is running localy, with an unauthenticated Socks5 listening at
+    // localhost:9050
+
+    let mut client = Client::new_proxy("ozahtqwp25chjdjd.onion:50001", "127.0.0.1:9050").unwrap();
+    let res = client.server_features();
+    println!("{:#?}", res);
+
+    // works both with onion v2/v3 (if your Tor supports them)
+    let mut client = Client::new_proxy(
+        "v7gtzf7nua6hdmb2wtqaqioqmesdb4xrlly4zwr7bvayxv2bpg665pqd.onion:50001",
+        "127.0.0.1:9050",
+    )
+    .unwrap();
+    let res = client.server_features();
+    println!("{:#?}", res);
+}