Is it possible to resend the streaming data?

Answer 1

In general its always possible to do anything you want with data once you receive it.

Streaming data usually means that data is being processed as it arrives rather then waiting for a complete data stream. This could be news, financial data, multimedia, anything. The data stream is constructed so that it isn't necessary to have the end of the data stream to be useful. Often its also constructed with periodic sync points so that you don't need the beginning of the data stream either. (e.g. MPEG2 transport streams used for digital TV broadcast)

In this case the key question is did you receive it in a form you can retransmit?

If the data is being sent in an encrypted format and then securely offered ephemerally (with no way to tap into the data stream and leaving no lasting record) then you probably don't have anything you can retransmit. If you captured the inbound data packets they probably have to be decrypted to serve them to another client.

If the data is being sent such that you can access a decrypted copy of it then you can retransmit it. The details of how depend on what kind of data stream it is and what clients expect to receive. Clock updates or Microsoft stock price updates are simpler than buffering an audio or video message to re-serve so people can watch it at their convenience.

In case its necessary to point this out, you should also be sure that you are not resending data in violation of any laws where you happen to be. For example real-time stock quotes, newspaper articles, and most videos are protected by copyright law in many places. If you don't have the owners permission to transmit a copy of the data, and doing so is prohibited by law you may have a legal problem. There are also laws in various places that prohibit recording and transmitting some types of private data not protected by copyright, telephone calls are a common example.