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CS2335/lab4/documents/NetPaint_Protocol.txt

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+The clients need to be able to know of the following happenings:
+
+1. Their connection has been rejected by the server
+2. Another user has joined/dropped from the session
+3. The server wants to tell them of an error
+4. A user is sending a chat message
+5. A user has drawn something
+6. A user did an UNDO on something
+
+SRVE - Server error. Rejection, drop, server quitting, etc. Format:
+    SRVE: Message string
+
+SRVM - Server message. New user, lost user, etc. Format:
+    SRVM: Message string
+
+HELO - User is joining the server. Format:
+    HELO: username
+
+QUIT - User is quitting the server gracefully. Format:
+    QUIT: username
+
+RECT - user is drawing a rectangle. Format:
+    RECT:msgid:username:startX:startY:height:width:color:fill(y|n)
+
+POLY - user is drawing a polygon. Format:
+    RECT:msgid:username:color:fill(y|n):numpoints:x1:y1:x2:y2:...
+
+TRIA - user is drawing a triangle. Format:
+    TRIA:msgid:username:x1:y1:x2:y2:x3:y3:color:fill(y|n)
+
+LINE - user is drawing a line. Format:
+    LINE:msgid:username:startX:startY:rise:run:color
+
+QUAD - User is drawing a quadratic curve. Format:
+    QUAD:msgid:username:x1:y1:x2:y2:ctrlx:ctrly:color
+
+ELIP - User is drawing an ellipse. Format:
+    ELIP:msgid:username:startX:startY:height:width:color:fill(y|n)
+
+TEXT - User is drawing text. Format:
+    TEXT:msgid:username:startX:startY:size:color:font:text
+
+IMAG - User is inserting an image. Format:
+    IMAG:msgid:username:startX:startY:height:width:URL
+Note here that URL can be either a global URL, in which case we would download the image off the Internet, or just a filename, in which case the users would connect to the client that chose the image p2p and request a download.
+
+UNDO - User is undoing an action. Format:
+    UNDO:msgid:username:undoid
+undoid corresponds to the id of the message we want to undo.
+
+CHAT - User is sending a chat message. Format:
+    CHAT:username:text
+
+
+