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server.go
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server.go
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/*
Copyright 2016 Mike Cheng
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package main
import (
"crypto/tls"
"log"
"net/http"
"sync"
"text/template"
)
var redirectTemplate = template.Must(template.New("redirect").Parse(`
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<meta name="go-import" content="{{.URL}} git {{.RedirectURL}}">
<meta http-equiv="refresh" content="0; url={{.RedirectURL}}">
</head>
<body>
<p>Nothing to see here...</p>
</body>
</html>
`))
func redirectHandler(w http.ResponseWriter, req *http.Request) {
if v, ok := redirectMap[req.Host]; ok {
redirectTemplate.Execute(w, Redirect{URL: req.Host, RedirectURL: v})
} else {
log.Println("Unknown host:", req.Host)
http.Error(w, "Unknown host", http.StatusBadRequest)
}
}
// createTLSConfig creates a tls.Config for multiple cert/key pairs.
func createTLSConfig(tlsConfigs []TLSConfig) *tls.Config {
var err error
tlsConfig := &tls.Config{
Certificates: make([]tls.Certificate, len(tlsConfigs)),
}
for i, conf := range tlsConfigs {
tlsConfig.Certificates[i], err = tls.LoadX509KeyPair(conf.CertFile, conf.KeyFile)
if err != nil {
log.Fatal(err)
}
}
tlsConfig.BuildNameToCertificate()
return tlsConfig
}
func listenAndServeTLS(config Config, wg *sync.WaitGroup) {
defer wg.Done()
tlsConfig := createTLSConfig(config.TLSConfigs)
server := &http.Server{
TLSConfig: tlsConfig,
}
lis, err := tls.Listen("tcp", ":443", tlsConfig)
if err != nil {
log.Fatal(err)
}
defer lis.Close()
log.Fatal(server.Serve(lis))
}
func listenAndServe(wg *sync.WaitGroup) {
defer wg.Done()
log.Fatal(http.ListenAndServe(":80", nil))
}