137 lines
4.0 KiB
Go
137 lines
4.0 KiB
Go
// Copyright 2017 Vector Creations Ltd
|
|
//
|
|
// 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 (
|
|
"flag"
|
|
"fmt"
|
|
log "github.com/Sirupsen/logrus"
|
|
"net/http"
|
|
"net/http/httputil"
|
|
"net/url"
|
|
"os"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
const usage = `Usage: %s
|
|
|
|
Create a single endpoint URL which clients can be pointed at.
|
|
|
|
The client-server API in Dendrite is split across multiple processes
|
|
which listen on multiple ports. You cannot point a Matrix client at
|
|
any of those ports, as there will be unimplemented functionality.
|
|
In addition, all client-server API processes start with the additional
|
|
path prefix '/api', which Matrix clients will be unaware of.
|
|
|
|
This tool will proxy requests for all client-server URLs and forward
|
|
them to their respective process. It will also add the '/api' path
|
|
prefix to incoming requests.
|
|
|
|
THIS TOOL IS FOR TESTING AND NOT INTENDED FOR PRODUCTION USE.
|
|
|
|
Arguments:
|
|
|
|
`
|
|
|
|
var (
|
|
syncServerURL = flag.String("sync-api-server-url", "", "The base URL of the listening 'dendrite-sync-api-server' process. E.g. 'http://localhost:4200'")
|
|
clientAPIURL = flag.String("client-api-server-url", "", "The base URL of the listening 'dendrite-client-api-server' process. E.g. 'http://localhost:4321'")
|
|
bindAddress = flag.String("bind-address", ":8008", "The listening port for the proxy.")
|
|
)
|
|
|
|
func makeProxy(targetURL string) (*httputil.ReverseProxy, error) {
|
|
if !strings.HasSuffix(targetURL, "/") {
|
|
targetURL += "/"
|
|
}
|
|
// Check that we can parse the URL.
|
|
_, err := url.Parse(targetURL)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &httputil.ReverseProxy{
|
|
Director: func(req *http.Request) {
|
|
// URL.Path() removes the % escaping from the path.
|
|
// The % encoding will be added back when the url is encoded
|
|
// when the request is forwarded.
|
|
// This means that we will lose any unessecary escaping from the URL.
|
|
// Pratically this means that any distinction between '%2F' and '/'
|
|
// in the URL will be lost by the time it reaches the target.
|
|
path := req.URL.Path
|
|
path = "api" + path
|
|
log.WithFields(log.Fields{
|
|
"path": path,
|
|
"url": targetURL,
|
|
"method": req.Method,
|
|
}).Print("proxying request")
|
|
newURL, err := url.Parse(targetURL + path)
|
|
if err != nil {
|
|
// We already checked that we can parse the URL
|
|
// So this shouldn't ever get hit.
|
|
panic(err)
|
|
}
|
|
// Copy the query parameters from the request.
|
|
newURL.RawQuery = req.URL.RawQuery
|
|
req.URL = newURL
|
|
},
|
|
}, nil
|
|
}
|
|
|
|
func main() {
|
|
flag.Usage = func() {
|
|
fmt.Fprintf(os.Stderr, usage, os.Args[0])
|
|
flag.PrintDefaults()
|
|
}
|
|
|
|
flag.Parse()
|
|
|
|
if *syncServerURL == "" {
|
|
flag.Usage()
|
|
fmt.Fprintln(os.Stderr, "no --sync-server-url specified.")
|
|
os.Exit(1)
|
|
}
|
|
|
|
if *clientAPIURL == "" {
|
|
flag.Usage()
|
|
fmt.Fprintln(os.Stderr, "no --client-api-url specified.")
|
|
os.Exit(1)
|
|
}
|
|
|
|
syncProxy, err := makeProxy(*syncServerURL)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
clientProxy, err := makeProxy(*clientAPIURL)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
http.Handle("/_matrix/client/r0/sync", syncProxy)
|
|
http.Handle("/", clientProxy)
|
|
|
|
srv := &http.Server{
|
|
Addr: *bindAddress,
|
|
ReadTimeout: 1 * time.Minute, // how long we wait for the client to send the entire request (after connection accept)
|
|
WriteTimeout: 5 * time.Minute, // how long the proxy has to write the full response
|
|
}
|
|
|
|
fmt.Println("Proxying requests to:")
|
|
fmt.Println(" /_matrix/client/r0/sync => ", *syncServerURL+"/api/_matrix/client/r0/sync")
|
|
fmt.Println(" /* => ", *clientAPIURL+"/api/*")
|
|
fmt.Println("Listening on ", *bindAddress)
|
|
srv.ListenAndServe()
|
|
|
|
}
|