Networks & devices

Device automation / mobile networking

4G/LTE mobile proxy farm

Real Syrian mobile proxies built on multiple devices, with remote control and automated reconnection for IP rotation.

System flow

  1. Server request
  2. Device gateway
  3. 4G/LTE connection
  4. Connection check

The problem

Some local payment services depend on regional mobile connectivity. I built a device-backed network for the integration work, connecting remote software to real 4G/LTE connections rather than relying only on datacenter proxies.

The build

I connected Android devices to server-side proxy access and automated connection management with Python and Bash. The work includes remote device actions, reconnection, and checking the resulting connection before using it.

Engineering notes

Reconnection is a device workflow

Rotation involves device-side actions and cellular reconnection, followed by checking the exit IP and connection. The carrier decides tower selection and IP allocation; reconnecting can encourage a new route or IP, but cannot guarantee a different tower or address.

A connection can disappear mid-request

Devices, radio coverage, and remote servers do not share one failure boundary. Device automation and server routing need to be considered together when a request stalls or a connection changes.

Working with regional providers

The network supported reverse-engineered payment integrations under provider rate limits and regional access constraints. Mobile routing, bounded request scheduling, and cache reuse were parts of the same integration problem.

What it includes

  • Multiple physical devices provide mobile-network exit connections.
  • Server-to-device routing and remote connection management.
  • IP rotation used alongside caching and request scheduling in local payment integrations.
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