make some params configurable

config.go

@@ -0,0 +1,40 @@
+package p2p
+
+import (
+	cfg "github.com/tendermint/go-config"
+)
+
+// XXX: go-p2p requires ApplyConfig be called
+var config cfg.Config = nil
+
+func init() {
+	initConfigureable(dialTimeoutKey, 3)
+	initConfigureable(handshakeTimeoutKey, 20)
+	initConfigureable(maxNumPeersKey, 50)
+
+	initConfigureable(sendRateKey, 512000) // 500KB/s
+	initConfigureable(recvRateKey, 512000) // 500KB/s
+
+	initConfigureable(maxPayloadSizeKey, 1024)
+
+	cfg.OnConfig(func(newConfig cfg.Config) {
+		config = newConfig
+
+		// fill in any config values that might be missing
+		for key, value := range defaultConfigValues {
+			if !config.IsSet(key) {
+				config.Set(key, value)
+			}
+		}
+	})
+	c := cfg.NewMapConfig(nil)
+	c.Set("log_level", "debug")
+	cfg.ApplyConfig(c)
+}
+
+// default config map
+var defaultConfigValues = make(map[string]int)
+
+func initConfigureable(key string, value int) {
+	defaultConfigValues[key] = value
+}