mirror of
https://github.com/bingohuang/docker-labs.git
synced 2025-07-14 01:57:32 +08:00
101 lines
2.4 KiB
Go
101 lines
2.4 KiB
Go
package handlers
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import (
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"crypto/tls"
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"fmt"
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"log"
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"net"
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"net/http"
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"net/http/httputil"
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"strings"
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"time"
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"github.com/franela/play-with-docker/config"
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"github.com/gorilla/mux"
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)
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func getTargetInfo(vars map[string]string, req *http.Request) (string, string) {
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node := vars["node"]
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port := vars["port"]
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hostPort := strings.Split(req.Host, ":")
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// give priority to the URL host port
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if len(hostPort) > 1 && hostPort[1] != config.PortNumber {
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port = hostPort[1]
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} else if port == "" {
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port = "80"
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}
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if strings.HasPrefix(node, "pwd") {
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// Node is actually an ip, need to convert underscores by dots.
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ip := strings.Replace(strings.TrimPrefix(node, "pwd"), "_", ".", -1)
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if net.ParseIP(ip) == nil {
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// Not a valid IP, so treat this is a hostname.
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} else {
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node = ip
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}
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}
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return node, port
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}
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func NewMultipleHostReverseProxy() *httputil.ReverseProxy {
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var transport http.RoundTripper = &http.Transport{
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Proxy: http.ProxyFromEnvironment,
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DialContext: (&net.Dialer{
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Timeout: 10 * time.Second,
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KeepAlive: 0,
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}).DialContext,
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DisableKeepAlives: true,
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MaxIdleConns: 1,
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IdleConnTimeout: 100 * time.Millisecond,
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TLSHandshakeTimeout: 10 * time.Second,
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ExpectContinueTimeout: 1 * time.Second,
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TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
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}
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director := func(req *http.Request) {
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v := mux.Vars(req)
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node, port := getTargetInfo(v, req)
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if port == "443" {
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// Only proxy http for now
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req.URL.Scheme = "https"
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} else {
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// Only proxy http for now
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req.URL.Scheme = "http"
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}
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req.URL.Host = fmt.Sprintf("%s:%s", node, port)
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log.Printf("HTTP Reverse proxying to %s\n", req.URL.Host)
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}
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return &httputil.ReverseProxy{Director: director, Transport: transport}
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}
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func NewSSLDaemonHandler() *httputil.ReverseProxy {
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director := func(req *http.Request) {
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v := mux.Vars(req)
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node := v["node"]
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if strings.HasPrefix(node, "pwd") {
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// Node is actually an ip, need to convert underscores by dots.
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ip := strings.Replace(strings.TrimPrefix(node, "pwd"), "_", ".", -1)
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if net.ParseIP(ip) == nil {
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// Not a valid IP, so treat this is a hostname.
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} else {
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node = ip
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}
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}
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// Only proxy http for now
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req.URL.Scheme = "http"
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req.URL.Host = fmt.Sprintf("%s:%s", node, "2375")
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log.Printf("HTTPS Reverse proxying to %s\n", req.URL.Host)
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}
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return &httputil.ReverseProxy{Director: director}
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}
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