Performs the actual HTTP probe that verifies internet access.
Design:
- HEAD request to generate_204 — zero bytes body downloaded.
- If primary CDN is unreachable, falls back to Apple success page.
- Detects captive portals via unexpected status code or redirect.
- Measures only round-trip time — not download speed (too heavy).
- Implementers
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
dispose(
) → void -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
probe(
) → Future< int> - Returns round-trip latency in milliseconds. Throws CaptivePortalException, ProbeTimeoutException, or ProbeFailedException on failure.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited