Both trafficking and possession for the purpose of trafficking are criminal offences under section 5 of the CDSA.
In the case of trafficking, the accused must either sell or offer to sell the drugs or substances. Importantly, it does not matter whether the drugs or substances you are selling are real or not. Attempting to sell fake drugs is enough. Additionally, it is not required that you have actually sold the drugs for a trafficking charge to be met, even just offering to sell the drugs through a verbal promise is enough.