In the most basic mode of operation, a Scream client sends a UDP request packet to a Scream server at a regular interval. The Scream server transmits GCF blocks

In the most basic mode of operation, a Scream client sends a UDP request packet to a Scream server at a regular interval. The Scream server transmits GCF blocks with some additional information to any clients that have sent a recent request. The usual port number (both TCP and UDP) for Scream is 1567 This was the best I could find: http://www.guralp.com/documents/SWA-RFC-SCRM.pdf http://www.guralp.com/documents/SWA-RFC-SCRM.pdf