Cannot run flutter http server successfully on iOS

Question

According to flutter-dev I try to run dart code ( same as shelf-example bin/server.dart ) .

It works on my Android device, because when I run curl -v "http://{my Android device LAN ip}:8080/helloworld", my Android device return Hello, World! quickly.

But when it runs on my iPhone12 (iOS 16.0.2), when I run curl -v "http://{my iOS device LAN ip}:8080/helloworld", curl will raise error below

*   Trying {my iOS device LAN ip}:8080...
* connect to {my iOS device LAN ip} port 8080 failed: Operation timed out
* Failed to connect to {my iOS device LAN ip} port 8080 after 75004 ms: Operation timed out
* Closing connection 0
curl: (28) Failed to connect to {my iOS device LAN ip} port 8080 after 75004 ms: Operation timed out

ping {my iOS device LAN ip} is ok

PING {my iOS device LAN ip} ({my iOS device LAN ip}): 56 data bytes
64 bytes from {my iOS device LAN ip}: icmp_seq=0 ttl=64 time=249.370 ms
64 bytes from {my iOS device LAN ip}: icmp_seq=1 ttl=64 time=171.025 ms
64 bytes from {my iOS device LAN ip}: icmp_seq=2 ttl=64 time=92.354 ms

telnet other port (such as 8081) will suddenly raise error Connection refused, when 8080 will wait a while and raise error Operation timed out.

So I think the dart code part is ok, but some important network config need to set.

So I have tried to add text bellow in Info-Debug.plist and Info-Release.plist but it not works.

    <key>NSLocalNetworkUsageDescription</key>
    <string>Desp</string>
    <key>NSBonjourServices</key>
    <array>
        <string>_dartobservatory._tcp</string>
    </array>

Is there any aspect I haven't considered? Any suggestion is appreciated.

Answer 1

So I think the dart code part is ok, but some important network config need to set.

After some days search, finally I get the key bug: Local Network Usage Permission.

Following to this answer , I add those code to Info.plist and xxx.swift, and agree the permission request dialog, finally, the http request can send to iPhone-Http-Server.