iOS Question Geting Default Gateway

[cloner7801]

Hi,
How can I get Default Gateway ip ?

 

[Erel]

There is no API for that. You can however find the UDP broadcast address with UDPSocket.GetBroadcastAddress and then send a message to all other devices in the network.

 

[cloner7801]

There is no API for that. You can however find the UDP broadcast address with UDPSocket.GetBroadcastAddress and then send a message to all other devices in the network.

I don't see GetBroadcastAddress in UDPSocket method

 

[cloner7801]

Dear Erel, I use this to send file to another device.
But I want to send file to all devices are opened the application

What is your idea? How can I do this?

 

[Erel]

TCP doesn't support broadcasting. MQTT can be a good solution however you will need to run a MQTT broker.

 

[cloner7801]

TCP doesn't support broadcasting. MQTT can be a good solution however you will need to run a MQTT broker.

But I want to use it in local network and CloudMQTT is internet base

 

[Erel]

You don't need to use CloudMQTT. Start with this tutorial: https://www.b4x.com/android/forum/threads/iot-mqtt-protocol.59471/#content

 

[cloner7801]

You don't need to use CloudMQTT. Start with this tutorial: https://www.b4x.com/android/forum/threads/iot-mqtt-protocol.59471/#content

But I want create connection between (2-3 device) Can I use this ?
Can you send me a source code for my problem?

 

[Erel]

Can you send me a source code for my problem?

No.

But I want create connection between (2-3 device) Can I use this ?

Go over the tutorial. It explains how MQTT works.

 

[cloner7801]

I can't worked with MQTT , because we don't have any MQTT broker in b4i , and I want to send a file in connected devices.
If I want to send file to one device , How can I do ?

I am using this code for find ip range :

ip = server.GetMyWifiIp

Dim m As Matcher = Regex.Matcher2("\.[^.]*$", 0, ip)
Do While m.Find
current = m.Match.Replace(".","")
range = ip.Replace(m.Match,".")
Loop

and with this code I connect to about 130 ip

Sub connect
     For i=0 To 130
        
     If i <> current And i <> 1 And i <> 0 Then
ip = range&i
ip = ip.Trim
client.Connect(ip,port, 30000)
End If


Next
End Sub

But this don't work !
I see newConnection in my log after that I see astream_Terminated

why this happend ?

what is best way to connect to other device , I dont know other device or devices ip and want to connect automatically.

Thanks.

 

[Erel]

You cannot guess the ip address. The simple solution is to show the ip address and then let the user enter it on the other device.

You can also send a UDP packet to the broadcast address with the ip address of each device.

 

[cloner7801]

You can also send a UDP packet to the broadcast address with the ip address of each device.

Thanks Erel, Can you explain this?

 

[Erel]

Start with sending a UDP packet between two devices by explicitly setting the ip address of the other device. Once it works you can change the ip address to the broadcast address (UDPSocket.GetBroadcastAddress).