<commit_before>package lnstate

import (
	"fmt"
	//"github.com/btcsuite/btcd/btcec"
	//"atomic"
	"github.com/btcsuite/btcd/wire"
	"github.com/btcsuite/btcutil"
	"li.lan/labs/plasma/channeldb"
	"li.lan/labs/plasma/lnwire"
	"li.lan/labs/plasma/shachain"
	"sync"
)

//This is a state machine which allows for simultaneous high-volume
//bidirectional payments. The design goal is to for all steps to be
//non-blocking over-the-wire on signing/revoking with the counterparty.
//
//A *single* Lightning Network node on one reasonably high-speced computer
//should be able to conduct transactions at Visa-scale (one Lightning Network
//node can process thousands of transactions per second total), enabling
//incredible volume for the entire network. This state machine design should
//enable transaction volume for the entire network greater than current Visa
//card transaction load by many orders of magnitude.
//
//More info on the design is in lnwire/README.md

//NOTE: WORK IN PROGRESS
//TODO: Will make channel-friendly & add in mutex stuff

//DUMMY FunCTIONS FOR UPDATING LATER
func disk() {
}
func net(msg lnwire.Message) {
	fmt.Println(msg)
}
func (l *LNChannel) sendErrorPkt() {
}

//Will copy in code from channel.go...

const (
	MAX_STAGED_HTLCS                 = 1000
	MAX_UNREVOKED_COMMITMENTS        = 16
	MAX_UPDATED_HTLCS_PER_COMMITMENT = 1000
)

//Currently, the mutex locks for across the entire channel, it's possible to
//update it to be more granular and to have each PaymentDescriptor have its own
//locks (and lock both simultaneously). However, this is complicated and will
//be updated in the future. Right now, since there is a per-channel
//global-lock, this should work fine...
//
//Before calling another function which does a lock, make sure to l.Unlock()
//first, e.g. if a packet received triggers a packet to be sent.

//PaymentDescriptor states
//PRESTAGE: We're not sure if the other guy wants to follow through
//STAGED: Both parties informally agree to add to their commitments
//SIGNING_AND_REVOKING: In the process of activating the HTLC
//
//Only one state is allowed at a time. timeout/settle can only begin on an
//ADD_COMPLETE state. If it times out before it hits completion, channel closes
//out uncooperatively.
//
//NOTE: Current design assumes if value%1000 == 200 as partially
//signed/revoked, this means that the code is reliant upon this as knowing when
//to force close out channels, etc.
const (
	//HTLC Add
	ADD_PRESTAGE             = 1000
	ADD_STAGED               = 1100
	ADD_SIGNING_AND_REVOKING = 1200
	ADD_COMPLETE             = 1300 //Most HTLCs should be this
	ADD_REJECTED             = 1999 //Staging request rejected

	//HTLC Timeout
	TIMEOUT_PRESTAGE             = 2000<commit_msg>Typos<commit_after>package lnstate

import (
	"fmt"
	//"github.com/btcsuite/btcd/btcec"
	//"atomic"
	"github.com/btcsuite/btcd/wire"
	"github.com/btcsuite/btcutil"
	"li.lan/labs/plasma/channeldb"
	"li.lan/labs/plasma/lnwire"
	"li.lan/labs/plasma/shachain"
	"sync"
)

//This is a state machine which allows for simultaneous high-volume
//bidirectional payments. The design goal is to for all steps to be
//non-blocking over-the-wire on signing/revoking with the counterparty.
//
//A *single* Lightning Network node on one reasonably high-speced computer
//should be able to conduct transactions at Visa-scale (one Lightning Network
//node can process thousands of transactions per second total), enabling
//incredible volume for the entire network. This state machine design should
//enable transaction volume for the entire network greater than current Visa
//card transaction load by many orders of magnitude.
//
//More info on the design is in lnwire/README.md

//NOTE: WORK IN PROGRESS (current working code in wallet is blocking -- it is
//implemented, but this version will be merged and replacing it soon)
//TODO: Will make channel-friendly & add in mutex stuff

//DUMMY FunCTIONS FOR UPDATING LATER
func disk() {
}
func net(msg lnwire.Message) {
	fmt.Println(msg)
}
func (l *LNChannel) sendErrorPkt() {
}

//Will copy in code from channel.go...

const (
	MAX_STAGED_HTLCS                 = 1000
	MAX_UNREVOKED_COMMITMENTS        = 16
	MAX_UPDATED_HTLCS_PER_COMMITMENT = 1000
)

//Currently, the mutex locks across the entire channel, it's possible to update
//it to be more granular and to have each PaymentDescriptor have its own locks
//(and lock both simultaneously for minimal parts). However, this is
//complicated and will be updated in the future. Right now, since there is a
//per-channel global-lock, this should work fine and be fairly performant.
//
//Before calling another function which does a lock, make sure to l.Unlock()
//first, e.g. if a packet received triggers a packet to be sent.

//PaymentDescriptor states
//PRESTAGE: We're not sure if the other guy wants to follow through
//STAGED: Both parties informally agree to add to their commitments
//SIGNING_AND_REVOKING: In the process of activating the HTLC
//
//Only one state is allowed at a time. timeout/settle can only begin on an
//ADD_COMPLETE state. If it times out before it hits completion, channel closes
//out uncooperatively.
//
//NOTE: Current design assumes if value%1000 == 200 as partially
//signed/revoked, this means that the code is reliant upon this as knowing when
//to force close out channels, etc.
const (
	//HTLC Add
	ADD_PRESTAGE             = 1000
	ADD_STAGED               = 1100
	ADD_SIGNING_AND_REVOKING = 1200
	ADD_COMPLETE             = 1300 //Most HTLCs should be this
	ADD_REJECTED             = 1999 //Staging request rejected

	//HTLC Timeout
	TIMEOUT_PRESTAGE             = 2000
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