WIP

api.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"fmt"
 	"log"
 	"net/http"
 	"os"
@@ -9,7 +8,6 @@ import (
 
 	gh "github.com/gorilla/handlers"
 	"github.com/gorilla/mux"
-	"github.com/miekg/dns"
 	"github.com/play-with-docker/play-with-docker/config"
 	"github.com/play-with-docker/play-with-docker/handlers"
 	"github.com/play-with-docker/play-with-docker/templates"
@@ -18,29 +16,11 @@ import (
 )
 
 func main() {
-
 	config.ParseFlags()
 	handlers.Bootstrap()
 
 	bypassCaptcha := len(os.Getenv("GOOGLE_RECAPTCHA_DISABLED")) > 0
 
-	// Start the DNS server
-	dns.HandleFunc(".", handlers.DnsRequest)
-	udpDnsServer := &dns.Server{Addr: ":53", Net: "udp"}
-	go func() {
-		err := udpDnsServer.ListenAndServe()
-		if err != nil {
-			log.Fatal(err)
-		}
-	}()
-	tcpDnsServer := &dns.Server{Addr: ":53", Net: "tcp"}
-	go func() {
-		err := tcpDnsServer.ListenAndServe()
-		if err != nil {
-			log.Fatal(err)
-		}
-	}()
-
 	server := handlers.Broadcast.GetHandler()
 
 	r := mux.NewRouter()
@@ -55,10 +35,6 @@ func main() {
 	corsHandler := gh.CORS(gh.AllowCredentials(), gh.AllowedHeaders([]string{"x-requested-with", "content-type"}), gh.AllowedOrigins([]string{"*"}))
 
 	// Specific routes
-	r.Host(fmt.Sprintf("{subdomain:.*}pwd{node:%s}-{port:%s}.{tld:.*}", config.PWDHostnameRegex, config.PortRegex)).Handler(tcpHandler)
-	r.Host(fmt.Sprintf("{subdomain:.*}pwd{node:%s}.{tld:.*}", config.PWDHostnameRegex)).Handler(tcpHandler)
-	r.Host(fmt.Sprintf("pwd{alias:%s}-{session:%s}-{port:%s}.{tld:.*}", config.AliasnameRegex, config.AliasSessionRegex, config.PortRegex)).Handler(tcpHandler)
-	r.Host(fmt.Sprintf("pwd{alias:%s}-{session:%s}.{tld:.*}", config.AliasnameRegex, config.AliasSessionRegex)).Handler(tcpHandler)
 	r.HandleFunc("/ping", handlers.Ping).Methods("GET")
 	corsRouter.HandleFunc("/instances/images", handlers.GetInstanceImages).Methods("GET")
 	corsRouter.HandleFunc("/sessions/{sessionId}", handlers.GetSession).Methods("GET")
@@ -106,13 +82,11 @@ func main() {
 		ReadHeaderTimeout: 5 * time.Second,
 	}
 
-	go func() {
-		log.Println("Listening on port " + config.PortNumber)
-		log.Fatal(httpServer.ListenAndServe())
-	}()
-
 	go handlers.ListenSSHProxy("0.0.0.0:1022")
 
 	// Now listen for TLS connections that need to be proxied
 	handlers.StartTLSProxy(config.SSLPortNumber)
+
+	log.Println("Listening on port " + config.PortNumber)
+	log.Fatal(httpServer.ListenAndServe())
 }

router/dns/dns.go

@@ -1,4 +1,4 @@
-package handlers
+package dns
 
 import (
 	"fmt"

router/router.go

@@ -0,0 +1,117 @@
+package router
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"net"
+
+	vhost "github.com/inconshreveable/go-vhost"
+)
+
+type Director func(host string) (*net.TCPAddr, error)
+
+type proxyRouter struct {
+	director Director
+}
+
+func (r *proxyRouter) Listen(laddr string) {
+	l, err := net.Listen("tcp", laddr)
+	defer l.Close()
+	if err != nil {
+		log.Fatal(err)
+	}
+	for {
+		conn, err := l.Accept()
+		if err != nil {
+			log.Println(err)
+			continue
+		}
+		go r.handleConnection(conn)
+	}
+}
+
+func (r *proxyRouter) handleConnection(c net.Conn) {
+	defer c.Close()
+	// first try tls
+	vhostConn, err := vhost.TLS(c)
+	if err != nil {
+		log.Printf("Incoming TLS connection produced an error. Error: %s", err)
+		return
+	}
+	defer vhostConn.Close()
+
+	host := vhostConn.ClientHelloMsg.ServerName
+	c.LocalAddr()
+	dstHost, err := r.director(fmt.Sprintf("%s:%d", host, 12))
+	if err != nil {
+		log.Printf("Error directing request: %v\n", err)
+		return
+	}
+
+	d, err := net.Dial("tcp", dstHost.String())
+	if err != nil {
+		log.Printf("Error dialing backend %s: %v\n", dstHost.String(), err)
+		return
+	}
+
+	errc := make(chan error, 2)
+	cp := func(dst io.Writer, src io.Reader) {
+		_, err := io.Copy(dst, src)
+		errc <- err
+	}
+	go cp(d, vhostConn)
+	go cp(vhostConn, d)
+	<-errc
+	/*
+		req, err := http.ReadRequest(bufio.NewReader(c))
+		if err != nil {
+			log.Println(err)
+			return
+		}
+
+		log.Println(req.Header)
+	*/
+}
+
+func NewRouter(director Director) *proxyRouter {
+	return &proxyRouter{director: director}
+}
+
+/*
+	// Start the DNS server
+	dns.HandleFunc(".", routerDns.DnsRequest)
+	udpDnsServer := &dns.Server{Addr: ":53", Net: "udp"}
+	go func() {
+		err := udpDnsServer.ListenAndServe()
+		if err != nil {
+			log.Fatal(err)
+		}
+	}()
+	tcpDnsServer := &dns.Server{Addr: ":53", Net: "tcp"}
+	go func() {
+		err := tcpDnsServer.ListenAndServe()
+		if err != nil {
+			log.Fatal(err)
+		}
+	}()
+	r := mux.NewRouter()
+	tcpHandler := handlers.NewTCPProxy()
+	r.Host(fmt.Sprintf("{subdomain:.*}pwd{node:%s}-{port:%s}.{tld:.*}", config.PWDHostnameRegex, config.PortRegex)).Handler(tcpHandler)
+	r.Host(fmt.Sprintf("{subdomain:.*}pwd{node:%s}.{tld:.*}", config.PWDHostnameRegex)).Handler(tcpHandler)
+	r.Host(fmt.Sprintf("pwd{alias:%s}-{session:%s}-{port:%s}.{tld:.*}", config.AliasnameRegex, config.AliasSessionRegex, config.PortRegex)).Handler(tcpHandler)
+	r.Host(fmt.Sprintf("pwd{alias:%s}-{session:%s}.{tld:.*}", config.AliasnameRegex, config.AliasSessionRegex)).Handler(tcpHandler)
+	r.HandleFunc("/ping", handlers.Ping).Methods("GET")
+	n := negroni.Classic()
+	n.UseHandler(r)
+
+	httpServer := http.Server{
+		Addr:              "0.0.0.0:" + config.PortNumber,
+		Handler:           n,
+		IdleTimeout:       30 * time.Second,
+		ReadHeaderTimeout: 5 * time.Second,
+	}
+	// Now listen for TLS connections that need to be proxied
+	tls.StartTLSProxy(config.SSLPortNumber)
+	http.ListenAndServe()
+*/

router/router_test.go

@@ -0,0 +1,49 @@
+package router
+
+import (
+	"crypto/tls"
+	"fmt"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestProxy_TLS(t *testing.T) {
+	tr := &http.Transport{
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+	}
+	client := &http.Client{Transport: tr}
+
+	const msg = "It works!"
+
+	var receivedHost string
+
+	ts := httptest.NewTLSServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprint(w, msg)
+	}))
+	defer ts.Close()
+
+	r := NewRouter(func(host string) (*net.TCPAddr, error) {
+		receivedHost = host
+		u, _ := url.Parse(ts.URL)
+		a, _ := net.ResolveTCPAddr("tcp", u.Host)
+		return a, nil
+	})
+	go r.Listen(":8080")
+
+	req, err := http.NewRequest("GET", "https://localhost:8080", nil)
+	assert.Nil(t, err)
+
+	resp, err := client.Do(req)
+	assert.Nil(t, err)
+
+	body, err := ioutil.ReadAll(resp.Body)
+	assert.Nil(t, err)
+	assert.Equal(t, msg, string(body))
+	assert.Equal(t, "localhost:8080", receivedHost)
+}

router/tcp/tcp.go

@@ -1,4 +1,4 @@
-package handlers
+package tcp
 
 import (
 	"crypto/tls"
@@ -9,8 +9,8 @@ import (
 	"net/http"
 	"strings"
 
+	"github.com/franela/pwd.old/config"
 	"github.com/gorilla/mux"
-	"github.com/play-with-docker/play-with-docker/config"
 )
 
 func getTargetInfo(vars map[string]string, req *http.Request) (string, string) {

router/tls/tls.go

@@ -1,4 +1,4 @@
-package handlers
+package tls
 
 import (
 	"fmt"