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server.go
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server.go
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package graceful
import (
"crypto/tls"
"net"
"net/http"
)
// Most of the code here is lifted straight from net/http
// Type Server is exactly the same as an http.Server, but provides more graceful
// implementations of its methods.
type Server http.Server
func (srv *Server) ListenAndServe() error {
addr := srv.Addr
if addr == "" {
addr = ":http"
}
l, e := net.Listen("tcp", addr)
if e != nil {
return e
}
return srv.Serve(l)
}
// Unlike the method of the same name on http.Server, this function defaults to
// enforcing TLS 1.0 or higher in order to address the POODLE vulnerability.
// Users who wish to enable SSLv3 must do so by supplying a TLSConfig
// explicitly.
func (srv *Server) ListenAndServeTLS(certFile, keyFile string) error {
addr := srv.Addr
if addr == "" {
addr = ":https"
}
config := &tls.Config{
MinVersion: tls.VersionTLS10,
}
if srv.TLSConfig != nil {
*config = *srv.TLSConfig
}
if config.NextProtos == nil {
config.NextProtos = []string{"http/1.1"}
}
var err error
config.Certificates = make([]tls.Certificate, 1)
config.Certificates[0], err = tls.LoadX509KeyPair(certFile, keyFile)
if err != nil {
return err
}
conn, err := net.Listen("tcp", addr)
if err != nil {
return err
}
tlsListener := tls.NewListener(conn, config)
return srv.Serve(tlsListener)
}
// ListenAndServe behaves exactly like the net/http function of the same name.
func ListenAndServe(addr string, handler http.Handler) error {
server := &Server{Addr: addr, Handler: handler}
return server.ListenAndServe()
}
// ListenAndServeTLS behaves almost exactly like the net/http function of the
// same name. Unlike net/http, however, this function defaults to enforcing TLS
// 1.0 or higher in order to address the POODLE vulnerability. Users who wish to
// enable SSLv3 must do so by explicitly instantiating a server with an
// appropriately configured TLSConfig property.
func ListenAndServeTLS(addr, certfile, keyfile string, handler http.Handler) error {
server := &Server{Addr: addr, Handler: handler}
return server.ListenAndServeTLS(certfile, keyfile)
}
// Serve behaves exactly like the net/http function of the same name.
func Serve(l net.Listener, handler http.Handler) error {
server := &Server{Handler: handler}
return server.Serve(l)
}