playground: Stop reading HTTP request as soon as limit is reached.

Request handlers were reading the entire request before checking
length, making compilerd vulnerable to DoS.

Change-Id: I75d05d6f71a1886b8e84549fc1f3d4e9da83c73f
3 files changed
tree: 179c5675486f214dc73fffe1f85b30d74561e9e8
  1. client/
  2. go/
  3. pgbundle/
  4. .gitignore