95 lines
2.1 KiB
Go
Executable file
95 lines
2.1 KiB
Go
Executable file
package main
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import (
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"bytes"
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"crypto/rand"
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"crypto/rsa"
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"crypto/tls"
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"crypto/x509"
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"encoding/pem"
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"math/big"
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"net"
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"net/http"
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"os"
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"time"
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"fmt"
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)
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func generateSelfSignedCert(host string) (tls.Certificate, error) {
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cert := &x509.Certificate{
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SerialNumber: big.NewInt(0),
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NotBefore: time.Now(),
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NotAfter: time.Now().AddDate(10, 0, 0),
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ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
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KeyUsage: x509.KeyUsageDigitalSignature,
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BasicConstraintsValid: true,
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}
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cert.DNSNames = []string{host}
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certPrivKey, err := rsa.GenerateKey(rand.Reader, 4096)
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if err != nil {
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return tls.Certificate{}, err
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}
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certBytes, err := x509.CreateCertificate(rand.Reader, cert, cert, &certPrivKey.PublicKey, certPrivKey)
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if err != nil {
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return tls.Certificate{}, err
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}
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certPEM := new(bytes.Buffer)
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pem.Encode(certPEM, &pem.Block{
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Type: "CERTIFICATE",
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Bytes: certBytes,
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})
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certPrivKeyPEM := new(bytes.Buffer)
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pem.Encode(certPrivKeyPEM, &pem.Block{
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Type: "RSA PRIVATE KEY",
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Bytes: x509.MarshalPKCS1PrivateKey(certPrivKey),
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})
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serverCert, err := tls.X509KeyPair(certPEM.Bytes(), certPrivKeyPEM.Bytes())
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if err != nil {
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return tls.Certificate{}, err
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}
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return serverCert, err
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}
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type myHandler struct{
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nreq int
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}
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func (h myHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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fmt.Printf("accepted request number %d", h.nreq)
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fmt.Fprintf(w, "request number: %d", h.nreq)
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}
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func main() {
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hostname, err := os.Hostname()
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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cert, err := generateSelfSignedCert(hostname)
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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tlsConfig := &tls.Config{
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Certificates: []tls.Certificate{cert},
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ClientAuth: tls.RequireAnyClientCert,
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}
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srv := &http.Server{
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Addr: ":8080",
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Handler: myHandler{nreq: 0},
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ReadTimeout: 5 * time.Minute,
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WriteTimeout: 5 * time.Minute,
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IdleTimeout: 5 * time.Minute,
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ConnState: func(conn net.Conn, event http.ConnState) {
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fmt.Printf("addr: %s, changed state to: %s", conn.RemoteAddr(), event.String())
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},
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TLSConfig: tlsConfig,
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}
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srv.ListenAndServeTLS("", "")
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}
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