2e25a63807
Created a single log function that prints a standard message that includes IP and port of client. Remove or commented out other debug prints.
64 lines
2.1 KiB
Lua
64 lines
2.1 KiB
Lua
-- httpserver-connection
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-- Part of nodemcu-httpserver, provides a buffered connection object that can handle multiple
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-- consecutive send() calls, and buffers small payloads to send once they get big.
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-- For this to work, it must be used from a coroutine and owner is responsible for the final
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-- flush() and for closing the connection.
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-- Author: Philip Gladstone, Marcos Kirsch
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BufferedConnection = {}
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-- parameter is the nodemcu-firmware connection
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function BufferedConnection:new(connection)
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local newInstance = {}
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newInstance.connection = connection
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newInstance.size = 0
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newInstance.data = {}
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-- Returns true if there was any data to be sent.
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function newInstance:flush()
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if self.size > 0 then
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self.connection:send(table.concat(self.data, ""))
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self.data = {}
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self.size = 0
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return true
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end
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return false
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end
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function newInstance:getpeer()
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return self.connection:getpeer()
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end
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function newInstance:send(payload)
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local flushThreshold = 1400
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local newSize = self.size + payload:len()
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while newSize >= flushThreshold do
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--STEP1: cut out piece from payload to complete threshold bytes in table
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local pieceSize = flushThreshold - self.size
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local piece = payload:sub(1, pieceSize)
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payload = payload:sub(pieceSize + 1, -1)
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--STEP2: insert piece into table
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table.insert(self.data, piece)
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piece = nil
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self.size = self.size + pieceSize --size should be same as flushThreshold
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--STEP3: flush entire table
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if self:flush() then
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coroutine.yield()
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end
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--at this point, size should be 0, because the table was just flushed
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newSize = self.size + payload:len()
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end
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--at this point, whatever is left in payload should be < flushThreshold
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if payload:len() ~= 0 then
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--leave remaining data in the table
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table.insert(self.data, payload)
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self.size = self.size + payload:len()
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end
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end
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return newInstance
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end
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return BufferedConnection
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