les: implement les4 and UDP extension for token sale

cmd/geth/main.go

@@ -101,6 +101,7 @@ var (
 		utils.UltraLightServersFlag,
 		utils.UltraLightFractionFlag,
 		utils.UltraLightOnlyAnnounceFlag,
+		utils.LespayTestModuleFlag,
 		utils.WhitelistFlag,
 		utils.CacheFlag,
 		utils.CacheDatabaseFlag,

cmd/geth/usage.go

@@ -94,6 +94,7 @@ var AppHelpFlagGroups = []flagGroup{
 			utils.UltraLightServersFlag,
 			utils.UltraLightFractionFlag,
 			utils.UltraLightOnlyAnnounceFlag,
+			utils.LespayTestModuleFlag,
 		},
 	},
 	{

cmd/utils/flags.go

@@ -272,6 +272,10 @@ var (
 		Usage: "Maximum number of light clients to serve, or light servers to attach to",
 		Value: eth.DefaultConfig.LightPeers,
 	}
+	LespayTestModuleFlag = cli.BoolFlag{
+		Name:  "lespay.testmodule",
+		Usage: "Enable dummy payment module (for testing only)",
+	}
 	UltraLightServersFlag = cli.StringFlag{
 		Name:  "ulc.servers",
 		Usage: "List of trusted ultra-light servers",
@@ -1009,6 +1013,9 @@ func setLes(ctx *cli.Context, cfg *eth.Config) {
 	if ctx.GlobalIsSet(UltraLightOnlyAnnounceFlag.Name) {
 		cfg.UltraLightOnlyAnnounce = ctx.GlobalBool(UltraLightOnlyAnnounceFlag.Name)
 	}
+	if ctx.GlobalIsSet(LespayTestModuleFlag.Name) {
+		cfg.LespayTestModule = true
+	}
 }
 
 // makeDatabaseHandles raises out the number of allowed file handles per process

eth/config.go

@@ -116,6 +116,9 @@ type Config struct {
 	UltraLightFraction     int      `toml:",omitempty"` // Percentage of trusted servers to accept an announcement
 	UltraLightOnlyAnnounce bool     `toml:",omitempty"` // Whether to only announce headers, or also serve them
 
+	// Light client payment options
+	LespayTestModule bool
+
 	// Database options
 	SkipBcVersionCheck bool `toml:"-"`
 	DatabaseHandles    int  `toml:"-"`

internal/web3ext/web3ext.go

@@ -33,6 +33,7 @@ var Modules = map[string]string{
 	"swarmfs":    SwarmfsJs,
 	"txpool":     TxpoolJs,
 	"les":        LESJs,
+	"lespay":     LESPAYJs,
 }
 
 const ChequebookJs = `
@@ -856,3 +857,50 @@ web3._extend({
 	]
 });
 `
+
+const LESPAYJs = `
+web3._extend({
+	property: 'lespay',
+	methods:
+	[
+		new web3._extend.Method({
+			name: 'connection',
+			call: 'lespay_connection',
+			params: 6
+		}),
+		new web3._extend.Method({
+			name: 'deposit',
+			call: 'lespay_deposit',
+			params: 4
+		}),
+		new web3._extend.Method({
+			name: 'buyTokens',
+			call: 'lespay_buyTokens',
+			params: 6
+		}),
+		new web3._extend.Method({
+			name: 'buyTokens',
+			call: 'lespay_sellTokens',
+			params: 6
+		}),
+		new web3._extend.Method({
+			name: 'getBalance',
+			call: 'lespay_getBalance',
+			params: 2
+		}),
+		new web3._extend.Method({
+			name: 'info',
+			call: 'lespay_info',
+			params: 2
+		}),
+		new web3._extend.Method({
+			name: 'receiverInfo',
+			call: 'lespay_receiverInfo',
+			params: 3
+		}),
+	],
+	properties:
+	[
+	]
+});
+`