Align SDK SSH destination parsing with CLI

src/client.rs

@@ -731,13 +731,23 @@ fn first_resolved_addr(addrs: &[SocketAddr], host: &str, port: u16) -> Result<So
 }
 
 fn destination_host(destination: &str) -> String {
-    destination
-        .rsplit('@')
+    let without_user = destination
+        .rsplit_once('@')
+        .map_or(destination, |(_, host)| host);
+    let without_path = without_user
+        .strip_prefix("ssh://")
+        .unwrap_or(without_user)
+        .split('/')
         .next()
-        .unwrap_or(destination)
-        .split(':')
-        .next()
-        .unwrap_or(destination)
+        .unwrap_or(without_user);
+    if let Some(stripped) = without_path.strip_prefix('[')
+        && let Some((host, _)) = stripped.split_once(']')
+    {
+        return host.to_string();
+    }
+    without_path
+        .split_once(':')
+        .map_or(without_path, |(host, _)| host)
         .to_string()
 }
 
@@ -811,6 +821,15 @@ mod tests {
         );
         assert_eq!(destination_host("palav@example.com"), "example.com");
         assert_eq!(destination_host("example.com:2222"), "example.com");
+        assert_eq!(destination_host("palav@[2001:db8::1]:2222"), "2001:db8::1");
+        assert_eq!(
+            destination_host("ssh://palav@example.com:2222/srv/app"),
+            "example.com"
+        );
+        assert_eq!(
+            destination_host("ssh://palav@[2001:db8::2]:2222/srv/app"),
+            "2001:db8::2"
+        );
     }
 
     #[test]
@@ -880,6 +899,21 @@ mod tests {
         );
     }
 
+    #[test]
+    fn sdk_udp_host_preserves_bracketed_ipv6_destination_without_ssh_config() {
+        assert_eq!(
+            selected_sdk_udp_host(
+                None,
+                &HostConfig::default(),
+                &ClientConfig::default(),
+                "deploy@[2001:db8::5]:2222",
+                &SdkSshConfig::default(),
+            )
+            .unwrap(),
+            "2001:db8::5"
+        );
+    }
+
     #[test]
     fn sdk_udp_host_honors_cli_compatible_special_values() {
         let ssh_config = SdkSshConfig {