andrew06074:

What do you mean they are for convention? Streamlit requires http requests to run no?


There are ports that are generally considered “well-known”, such as this list:
  
      

      Network Encyclopedia – 27 Aug 19
  

  
    

Well-Known Port Numbers - Network Encyclopedia

  Well-known port numbers are port numbers for Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) that have been assigned to specific TCP/IP applications or services by the Internet Assigned Numbers Authority (IANA).

  
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But if you wanted to broadcast a lot of Streamlit apps, you should have no problem doing 8501, 8502, 8503 and so on until you run out of apps.
Best,
Randy