I have always countered the Cannon Rush with a proxy gateway and some zealot rush inside his base. If you do this early on you'll be able to destroy his enough probes of your enemy early enough to prevent him of doing many more Cannons. With this in mind gather 400 minerals and be sure to have at leas one probe outside your base so you can rebuild your nexus.
I have always countered the Cannon Rush with a proxy gateway and some zealot rush inside his base. If you do this early on you'll be able to destroy his enough probes of your enemy early enough to prevent him of doing many more Cannons. With this in mind gather 400 minerals and be sure to have at leas one probe outside your base so you can rebuild your nexus.