#225 work in progress comms changes
This commit is contained in:
Mikayla
@@ -446,14 +446,15 @@ end
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---@param id integer reactor ID
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---@param version string PLC version
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---@param modem table modem device
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---@param local_port integer local listening port
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---@param server_port integer remote server port
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---@param plc_channel integer PLC comms channel
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---@param svr_channel integer supervisor server channel
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---@param range integer trusted device connection range
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---@param reactor table reactor device
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---@param rps rps RPS reference
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---@param conn_watchdog watchdog watchdog reference
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function plc.comms(id, version, modem, local_port, server_port, range, reactor, rps, conn_watchdog)
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function plc.comms(id, version, modem, plc_channel, svr_channel, range, reactor, rps, conn_watchdog)
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local self = {
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sv_addr = comms.BROADCAST,
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seq_num = 0,
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r_seq_num = nil,
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scrammed = false,
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@@ -472,7 +473,7 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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-- configure modem channels
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local function _conf_channels()
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modem.closeAll()
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modem.open(local_port)
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modem.open(plc_channel)
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end
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_conf_channels()
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@@ -485,9 +486,9 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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local r_pkt = comms.rplc_packet()
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r_pkt.make(id, msg_type, msg)
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s_pkt.make(self.seq_num, PROTOCOL.RPLC, r_pkt.raw_sendable())
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s_pkt.make(self.sv_addr, self.seq_num, PROTOCOL.RPLC, r_pkt.raw_sendable())
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modem.transmit(server_port, local_port, s_pkt.raw_sendable())
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modem.transmit(svr_channel, plc_channel, s_pkt.raw_sendable())
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self.seq_num = self.seq_num + 1
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end
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@@ -499,9 +500,9 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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local m_pkt = comms.mgmt_packet()
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m_pkt.make(msg_type, msg)
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s_pkt.make(self.seq_num, PROTOCOL.SCADA_MGMT, m_pkt.raw_sendable())
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s_pkt.make(self.sv_addr, self.seq_num, PROTOCOL.SCADA_MGMT, m_pkt.raw_sendable())
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modem.transmit(server_port, local_port, s_pkt.raw_sendable())
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modem.transmit(svr_channel, plc_channel, s_pkt.raw_sendable())
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self.seq_num = self.seq_num + 1
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end
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@@ -667,6 +668,7 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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-- unlink from the server
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function public.unlink()
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self.sv_addr = comms.BROADCAST
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self.linked = false
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self.r_seq_num = nil
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self.status_cache = nil
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@@ -731,7 +733,7 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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end
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end
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-- parse an RPLC packet
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-- parse a packet
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---@nodiscard
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---@param side string
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---@param sender integer
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@@ -760,14 +762,14 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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pkt = mgmt_pkt.get()
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end
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else
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log.debug("illegal packet type " .. s_pkt.protocol(), true)
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log.debug("unsupported packet type " .. s_pkt.protocol(), true)
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end
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end
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return pkt
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end
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-- handle an RPLC packet
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-- handle RPLC and MGMT packets
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---@param packet rplc_frame|mgmt_frame packet frame
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---@param plc_state plc_state PLC state
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---@param setpoints setpoints setpoint control table
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@@ -775,10 +777,11 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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-- print a log message to the terminal as long as the UI isn't running
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local function println_ts(message) if not plc_state.fp_ok then util.println_ts(message) end end
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local l_port = packet.scada_frame.local_port()
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local l_chan = packet.scada_frame.local_channel()
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local src_addr = packet.scada_frame.src_addr()
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-- handle packets now that we have prints setup
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if l_port == local_port then
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if l_chan == plc_channel then
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-- check sequence number
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if self.r_seq_num == nil then
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self.r_seq_num = packet.scada_frame.seq_num()
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@@ -797,7 +800,8 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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-- handle packet
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if protocol == PROTOCOL.RPLC then
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---@cast packet rplc_frame
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if self.linked then
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-- if linked, only accept packets from configured supervisor
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if self.linked and (self.sv_addr == src_addr) then
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if packet.type == RPLC_TYPE.STATUS then
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-- request of full status, clear cache first
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self.status_cache = nil
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@@ -928,15 +932,18 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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else
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log.debug("received unknown RPLC packet type " .. packet.type)
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end
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else
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elseif not self.linked then
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log.debug("discarding RPLC packet before linked")
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else
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log.debug("discarding RPLC from different supervisor (src_addr " .. src_addr .. " ≠ " .. self.sv_addr .. "sv_addr)")
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end
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elseif protocol == PROTOCOL.SCADA_MGMT then
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---@cast packet mgmt_frame
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if self.linked then
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-- if linked, only accept packets from configured supervisor
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if self.linked and (self.sv_addr == src_addr) then
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if packet.type == SCADA_MGMT_TYPE.ESTABLISH then
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-- link request confirmation
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if packet.length == 1 then
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if (packet.length == 1) and (self.sv_addr == src_addr) then
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log.debug("received unsolicited establish response")
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local est_ack = packet.data[1]
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@@ -945,22 +952,26 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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self.status_cache = nil
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_send_struct()
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public.send_status(plc_state.no_reactor, plc_state.reactor_formed)
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log.debug("re-sent initial status data")
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elseif est_ack == ESTABLISH_ACK.DENY then
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println_ts("received unsolicited link denial, unlinking")
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log.warning("unsolicited establish request denied")
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elseif est_ack == ESTABLISH_ACK.COLLISION then
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println_ts("received unsolicited link collision, unlinking")
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log.warning("unsolicited establish request collision")
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elseif est_ack == ESTABLISH_ACK.BAD_VERSION then
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println_ts("received unsolicited link version mismatch, unlinking")
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log.warning("unsolicited establish request version mismatch")
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log.debug("re-sent initial status data due to re-establish")
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else
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println_ts("invalid unsolicited link response")
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log.debug("unsolicited unknown establish request response")
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end
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if est_ack == ESTABLISH_ACK.DENY then
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println_ts("received unsolicited link denial, unlinking")
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log.warning("unsolicited establish request denied")
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elseif est_ack == ESTABLISH_ACK.COLLISION then
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println_ts("received unsolicited link collision, unlinking")
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log.warning("unsolicited establish request collision")
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elseif est_ack == ESTABLISH_ACK.BAD_VERSION then
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println_ts("received unsolicited link version mismatch, unlinking")
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log.warning("unsolicited establish request version mismatch")
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else
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println_ts("invalid unsolicited link response")
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log.debug("unsolicited unknown establish request response")
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end
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self.linked = est_ack == ESTABLISH_ACK.ALLOW
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-- unlink
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self.sv_addr = comms.BROADCAST
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self.linked = false
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end
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-- clear this since this is for something that was unsolicited
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self.last_est_ack = ESTABLISH_ACK.ALLOW
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@@ -980,7 +991,7 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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log.warning("PLC KEEP_ALIVE trip time > 750ms (" .. trip_time .. "ms)")
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end
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-- log.debug("RPLC RTT = " .. trip_time .. "ms")
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-- log.debug("PLC RTT = " .. trip_time .. "ms")
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_send_keep_alive_ack(timestamp)
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else
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@@ -1002,9 +1013,11 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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if est_ack == ESTABLISH_ACK.ALLOW then
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println_ts("linked!")
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log.info("supervisor establish request approved, PLC is linked")
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log.info("supervisor establish request approved, linked to SV (CID#" .. src_addr .. ")")
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-- reset remote sequence number and cache
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-- link + reset remote sequence number and cache
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self.sv_addr = src_addr
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self.linked = true
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self.r_seq_num = nil
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self.status_cache = nil
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@@ -1012,23 +1025,28 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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public.send_status(plc_state.no_reactor, plc_state.reactor_formed)
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log.debug("sent initial status data")
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elseif self.last_est_ack ~= est_ack then
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if est_ack == ESTABLISH_ACK.DENY then
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println_ts("link request denied, retrying...")
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log.info("supervisor establish request denied, retrying")
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elseif est_ack == ESTABLISH_ACK.COLLISION then
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println_ts("reactor PLC ID collision (check config), retrying...")
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log.warning("establish request collision, retrying")
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elseif est_ack == ESTABLISH_ACK.BAD_VERSION then
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println_ts("supervisor version mismatch (try updating), retrying...")
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log.warning("establish request version mismatch, retrying")
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else
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println_ts("invalid link response, bad channel? retrying...")
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log.error("unknown establish request response, retrying")
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else
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if self.last_est_ack ~= est_ack then
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if est_ack == ESTABLISH_ACK.DENY then
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println_ts("link request denied, retrying...")
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log.info("supervisor establish request denied, retrying")
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elseif est_ack == ESTABLISH_ACK.COLLISION then
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println_ts("reactor PLC ID collision (check config), retrying...")
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log.warning("establish request collision, retrying")
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elseif est_ack == ESTABLISH_ACK.BAD_VERSION then
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println_ts("supervisor version mismatch (try updating), retrying...")
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log.warning("establish request version mismatch, retrying")
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else
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println_ts("invalid link response, bad channel? retrying...")
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log.error("unknown establish request response, retrying")
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end
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end
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-- unlink
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self.sv_addr = comms.BROADCAST
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self.linked = false
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end
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self.linked = est_ack == ESTABLISH_ACK.ALLOW
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self.last_est_ack = est_ack
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-- report link state
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@@ -1044,7 +1062,7 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
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log.error("illegal packet type " .. protocol, true)
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end
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else
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log.debug("received packet on unconfigured channel " .. l_port, true)
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log.debug("received packet on unconfigured channel " .. l_chan, true)
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end
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end
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