Pluggable Transport Naming

Pluggable Transport names serve as unique identifiers, and every PT MUST have a unique name.

PT names MUST be valid C identifiers. PT names MUST begin with a letter or underscore, and the remaining characters MUST be ASCII letters, numbers or underscores. No length limit is imposted.

PT names MUST satisfy the regular expression "[a-zA-Z_][a-zA-Z0-9_]*".