Making a shared drawing whiteboard with Canvas and WebSockets
Suppose we want a shared sketchpad. Anyone can draw something on the sketchpad and all others can view it. We learned how messages are communicated between clients and servers. We will go further and send drawing data.
Building a local drawing sketchpad
Before we deal with data sending and server handling, let's focus on making a drawing whiteboard. We will use the Canvas to build a local drawing sketchpad.
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