| ⇢ | A | Connection::openChannel() added | |
| ⇢ | A | Channel::confirmPublishing() added | |
| ⇢ | A | Channel::readContent() added | |
| ⇢ | A | Connection::isChannelNumberValid() added | |
| ⇢ | A | Channel::readHeader() added | |
| ⇢ | A | Connection::allocateChannelNumber() added | |
| B | ↗ | A | Connection::channel() improved |