func httpsBalance(bind string, backends BA.Backends) {
if httpsOptions.certFile == "" || httpsOptions.keyFile == "" {
log.Fatalln("specify both -cert and -key")
}
log.Println("using https balancing")
proxy := &Proxy{
&httputil.ReverseProxy{Director: func(req *http.Request) {
backend := backends.Choose()
if backend == nil {
log.Printf("no backend for client %s", req.RemoteAddr)
panic(NoBackend{})
}
req.URL.Scheme = "http"
req.Header.Add("X-Forwarded-Proto", "https")
req.URL.Host = backend.String()
req.Header.Add(XRealIP, RealIP(req))
}},
}
log.Printf("listening on %s, balancing %d backends", bind, backends.Len())
err := http.ListenAndServeTLS(bind, httpsOptions.certFile, httpsOptions.keyFile, proxy)
if err != nil {
log.Fatalf("failed to bind: %s", err)
}
}
func httpBalance(bind string, backends BA.Backends) {
log.Println("using http balancing")
proxy := &httputil.ReverseProxy{Director: func(req *http.Request) {
req.URL.Host = backends.Choose()
}}
log.Printf("listening on %s, balancing %d backends", bind, backends.Len())
err := http.ListenAndServe(bind, proxy)
if err != nil {
log.Fatalf("failed to bind: %s", err)
}
}
func httpBalance(bind string, backends BA.Backends) error {
log.Println("using http balancing")
proxy := &Proxy{
&httputil.ReverseProxy{Director: func(req *http.Request) {
backend := backends.Choose()
if backend == nil {
log.Printf("no backend for client %s", req.RemoteAddr)
panic(NoBackend{})
}
req.URL.Scheme = "http"
req.URL.Host = backend.String()
req.Header.Add(XRealIP, RealIP(req))
}},
}
log.Printf("listening on %s, balancing %d backends", bind, backends.Len())
return http.ListenAndServe(bind, proxy)
}
func tcpBalance(bind string, backends BA.Backends) {
log.Println("using tcp balancing")
ln, err := net.Listen("tcp", bind)
if err != nil {
log.Fatalf("failed to bind: %s", err)
}
log.Printf("listening on %s, balancing %d backends", bind, backends.Len())
for {
conn, err := ln.Accept()
if err != nil {
log.Printf("failed to accept: %s", err)
continue
}
go handleConnection(conn, backends.Choose())
}
}