# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 1
# self = https://watcher.sour.is/conv/ibx5cua
Paul Schaub: Implementing Packet Sequence Validation using Pushdown Automata
This is part 2 of a small series on verifying the validity of packet sequences using tools from theoretical computer science. Read part 1 here.

In the previous blog post I discussed how a formal grammar can be transformed into a pushdown automaton in order to check if a sequence of packets or token ... ⌘ Read more