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server.go
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server.go
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package cmd
import (
"crypto/tls"
"net/http"
"time"
"github.com/Sirupsen/logrus"
"github.com/webhippie/redirects/config"
"github.com/webhippie/redirects/router"
"gopkg.in/urfave/cli.v2"
// Import pprof for optional debugging
_ "net/http/pprof"
)
// Server provides the sub-command to start the server.
func Server() *cli.Command {
return &cli.Command{
Name: "server",
Usage: "Start the integrated server",
Flags: []cli.Flag{
&cli.StringFlag{
Name: "addr",
Value: "0.0.0.0:8080",
Usage: "Address to bind the server",
EnvVars: []string{"KLEISTER_SERVER_ADDR"},
Destination: &config.Server.Addr,
},
&cli.BoolFlag{
Name: "pprof",
Usage: "Enable pprof debugging server",
EnvVars: []string{"KLEISTER_SERVER_PPROF"},
Destination: &config.Server.Pprof,
},
&cli.StringFlag{
Name: "cert",
Value: "",
Usage: "Path to SSL cert",
EnvVars: []string{"KLEISTER_SERVER_CERT"},
Destination: &config.Server.Cert,
},
&cli.StringFlag{
Name: "key",
Value: "",
Usage: "Path to SSL key",
EnvVars: []string{"KLEISTER_SERVER_KEY"},
Destination: &config.Server.Key,
},
&cli.StringFlag{
Name: "templates",
Value: "",
Usage: "Path to custom templates",
EnvVars: []string{"KLEISTER_SERVER_TEMPLATES"},
Destination: &config.Server.Templates,
},
},
Action: func(c *cli.Context) error {
logrus.Infof("Starting the server on %s", config.Server.Addr)
var (
server *http.Server
)
if config.Server.Pprof {
logrus.Infof("Starting the debugger on localhost:6060")
go func() {
if err := http.ListenAndServe("localhost:6060", nil); err != nil {
logrus.Info(err)
}
}()
}
if config.Server.Cert != "" && config.Server.Key != "" {
cert, err := tls.LoadX509KeyPair(
config.Server.Cert,
config.Server.Key,
)
if err != nil {
logrus.Fatal("Failed to load SSL certificates. %s", err)
}
curves := []tls.CurveID{
tls.CurveP521,
tls.CurveP384,
tls.CurveP256,
}
ciphers := []uint16{
tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
}
cfg := &tls.Config{
PreferServerCipherSuites: true,
MinVersion: tls.VersionTLS12,
CurvePreferences: curves,
CipherSuites: ciphers,
Certificates: []tls.Certificate{cert},
}
server = &http.Server{
Addr: config.Server.Addr,
Handler: router.Load(),
ReadTimeout: 5 * time.Second,
WriteTimeout: 10 * time.Second,
TLSConfig: cfg,
}
} else {
server = &http.Server{
Addr: config.Server.Addr,
Handler: router.Load(),
ReadTimeout: 5 * time.Second,
WriteTimeout: 10 * time.Second,
}
}
if err := startServer(server); err != nil {
logrus.Fatal(err)
}
return nil
},
}
}