Use smaller probability to retry failed server.

Makefile

@@ -3,7 +3,7 @@
 PREFIX := shadowsocks
 LOCAL := $(GOPATH)/bin/$(PREFIX)-local
 SERVER := $(GOPATH)/bin/$(PREFIX)-server
-CGO := CGO_ENABLED=0
+CGO := CGO_ENABLED=1
 
 all: $(LOCAL) $(SERVER) $(TEST)
 
@@ -14,10 +14,10 @@ clean:
 
 # -a option is needed to ensure we disabled CGO
 $(LOCAL): shadowsocks/*.go cmd/$(PREFIX)-local/*.go
-	cd cmd/$(PREFIX)-local; $(CGO) go install -a
+	cd cmd/$(PREFIX)-local; $(CGO) go install
 
 $(SERVER): shadowsocks/*.go cmd/$(PREFIX)-server/*.go
-	cd cmd/$(PREFIX)-server; $(CGO) go install -a
+	cd cmd/$(PREFIX)-server; $(CGO) go install
 
 local: $(LOCAL)
 

cmd/shadowsocks-local/local.go

@@ -220,7 +220,7 @@ func connectToServer(serverId int, rawaddr []byte, addr string) (remote *ss.Conn
 	remote, err = ss.DialWithRawAddr(rawaddr, se.server, se.cipher.Copy())
 	if err != nil {
 		log.Println("error connecting to shadowsocks server:", err)
-		const maxFailCnt = 50
+		const maxFailCnt = 30
 		if servers.failCnt[serverId] < maxFailCnt {
 			servers.failCnt[serverId]++
 		}
@@ -236,11 +236,12 @@ func connectToServer(serverId int, rawaddr []byte, addr string) (remote *ss.Conn
 // some probability according to its fail count, so we can discover recovered
 // servers.
 func createServerConn(rawaddr []byte, addr string) (remote *ss.Conn, err error) {
+	const baseFailCnt = 20
 	n := len(servers.srvCipher)
 	skipped := make([]int, 0)
 	for i := 0; i < n; i++ {
 		// skip failed server, but try it with some probability
-		if servers.failCnt[i] > 0 && rand.Intn(servers.failCnt[i]+1) != 0 {
+		if servers.failCnt[i] > 0 && rand.Intn(servers.failCnt[i]+baseFailCnt) != 0 {
 			skipped = append(skipped, i)
 			continue
 		}