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Android Development
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Local Networking Limitations

Each emulator instance runs behind a virtual router, but unlike an actual device connected to a physical router, the emulated device doesn't have access to a physical network. Instead it runs as part of a normal application on your development machine. This means that it is subject to the same networking limitations as other applications on your machine:

  • Communication with the emulated device may be blocked by a firewall program running on your machine.
  • Communication with the emulated device may be blocked by another (physical) firewall/router to which your machine is connected.

The emulator's virtual router should be able to handle all outbound TCP and UDP connections/messages on behalf of the emulated device, provided your development machine's network environment allows it to do so. There are no built-in limitations on port numbers or ranges except the one imposed by your host operating system and network.

Depending on the environment, the emulator may not be able to support other protocols (such as ICMP, used for "ping") might not be supported. Currently, the emulator does not support IGMP or multicast.

Android Development
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