flutter_netdiag_plus 1.0.2

Detailed network diagnostics for Flutter: DNS lookup, TCP connect, HTTP RTT, multi-target ping, traceroute (Android NDK + native iOS).

1.0.2

• NetworkDiagnosticService.run() now runs all steps (DNS lookup, TCP connect, HTTP RTT, every external ping target, and traceroute) concurrently instead of one after another — each step updates its own status/result as soon as it finishes, instead of waiting for the steps listed above it to finish first. Total run time drops from the sum of every step's duration to roughly the duration of the slowest one.
• TCP Connect no longer reuses the InternetAddress resolved by the DNS Lookup step — it resolves the host itself via Socket.connect(host, port) so it is fully independent and is never skipped or delayed by a slow or failing DNS step.
• Example app: fixed a bug where typing a full URL (with http(s):// and a path) into the host field, or leaving a path in the default host, made DNS Lookup fail — the host is now consistently extracted (scheme + path stripped) both on first load and when pressing "Đo".

1.0.1

• Fix: iOS traceroute checks the setsockopt(SO_RCVTIMEO) result instead of ignoring it — previously a failed call could leave the ICMP socket with no read timeout and hang recvfrom() (and the awaiting Dart Future) indefinitely.
• Fix: Android native traceroute (traceroute.c) now verifies the ICMP echo id/sequence on every reply (both the direct echo reply and the MSG_ERRQUEUE Time Exceeded/Unreachable path) before accepting it, so a delayed reply from an earlier hop can no longer be misattributed to the current TTL under packet reordering/jitter.
• Fix: Android native traceroute no longer leaves an unbounded/dangling allocation on malloc/realloc failure — it now fails gracefully with an alloc_failed error instead of crashing the native process.
• Fix: Android native traceroute clamps maxHops to [1, 64], matching the iOS implementation, so the same Dart call no longer behaves differently per platform.
• Fix: FlutterNetdiagPlusPlugin (Android) no longer delivers a MethodChannel.Result after the engine has detached (e.g. hot restart, activity recreation), and attempts to interrupt an in-flight trace on detach instead of letting it run to completion against a dead channel.
• Fix: both Android and iOS Dart traceroute wrappers now catch malformed native results (FormatException/TypeError) and degrade to an empty result instead of throwing uncaught.

0.1.0

• First release of flutter_netdiag_plus.
• NetworkDiagnosticService: measures DNS lookup, TCP connect, HTTP RTT, and multi-target ping (externalTargets) using pure dart:io — no extra setup required.
• Ping is measured via TCP connect (not ICMP) — takes the min of several samples to stay close to the latency an app actually experiences, and to avoid false negatives from firewalls that drop ICMP but allow TCP.
• Traceroute plugs in via hopResolver, or can be used standalone through createTraceroute():
  • iOS: native Swift (UDP probe + passive ICMP socket).
  • Android: iterative ping -t TTL, with automatic fallback to native C code built via the NDK (ICMP ping-socket, recvmsg(MSG_ERRQUEUE)) when the ROM blocks execve.
• NetworkDiagnosticPanel — a ready-to-embed widget, themeable via DiagTheme.
• Can also be used headless: NetworkDiagnosticService(...).runOnce() returns a report whose toJson() output can be attached to a bug report ticket.
• Supports Android and iOS.