我可以在没有特殊库的情况下在App Engine上使用套接字吗？

Question

I'm confused by the GAE documentations. It says App Engine supports sockets without requiring you to import any special App Engine libraries or add any special App Engine code. but it seems misleading as just above it says App Engine supports outbound sockets through the appengine/socket package.

I would like to connect to an IMAP server using the standard net package. Is that possible or I'm stuck with the GAE sockets API?

https://cloud.google.com/appengine/docs/go/sockets/

Answer 1

Nothing stops you from connecting to an Imap server, since you will initiate an outbound connection. For java, the standard java mail packages work out of the box. Only for paid apps though, i.e. you need to have billing enabled.