Back out matrix-org/dendrite#2421 by restoring `http.Client`s

This creates problems with non-HTTPS endpoints and should fix #2444.

3 files changed, 22 insertions, 17 deletions

diff --git a/appservice/appservice.go b/appservice/appservice.go
index c5ae9ceb..8fe1b2fc 100644
--- a/appservice/appservice.go
+++ b/appservice/appservice.go
@@ -16,6 +16,8 @@ package appservice
 
 import (
 	"context"
+	"crypto/tls"
+	"net/http"
 	"sync"
 	"time"
 
@@ -33,7 +35,6 @@ import (
 	"github.com/matrix-org/dendrite/setup/base"
 	"github.com/matrix-org/dendrite/setup/config"
 	userapi "github.com/matrix-org/dendrite/userapi/api"
-	"github.com/matrix-org/gomatrixserverlib"
 )
 
 // AddInternalRoutes registers HTTP handlers for internal API calls
@@ -45,15 +46,19 @@ func AddInternalRoutes(router *mux.Router, queryAPI appserviceAPI.AppServiceInte
 // can call functions directly on the returned API or via an HTTP interface using AddInternalRoutes.
 func NewInternalAPI(
 	base *base.BaseDendrite,
-	userAPI userapi.AppserviceUserAPI,
-	rsAPI roomserverAPI.AppserviceRoomserverAPI,
+	userAPI userapi.UserInternalAPI,
+	rsAPI roomserverAPI.RoomserverInternalAPI,
 ) appserviceAPI.AppServiceInternalAPI {
-	client := gomatrixserverlib.NewClient(
-		gomatrixserverlib.WithTimeout(time.Second*30),
-		gomatrixserverlib.WithKeepAlives(false),
-		gomatrixserverlib.WithSkipVerify(base.Cfg.AppServiceAPI.DisableTLSValidation),
-	)
-
+	client := &http.Client{
+		Timeout: time.Second * 30,
+		Transport: &http.Transport{
+			DisableKeepAlives: true,
+			TLSClientConfig: &tls.Config{
+				InsecureSkipVerify: base.Cfg.AppServiceAPI.DisableTLSValidation,
+			},
+			Proxy: http.ProxyFromEnvironment,
+		},
+	}
 	js, _ := base.NATS.Prepare(base.ProcessContext, &base.Cfg.Global.JetStream)
 
 	// Create a connection to the appservice postgres DB
diff --git a/appservice/query/query.go b/appservice/query/query.go
index b7b0b335..dacd3caa 100644
--- a/appservice/query/query.go
+++ b/appservice/query/query.go
@@ -23,7 +23,6 @@ import (
 
 	"github.com/matrix-org/dendrite/appservice/api"
 	"github.com/matrix-org/dendrite/setup/config"
-	"github.com/matrix-org/gomatrixserverlib"
 	opentracing "github.com/opentracing/opentracing-go"
 	log "github.com/sirupsen/logrus"
 )
@@ -33,7 +32,7 @@ const userIDExistsPath = "/users/"
 
 // AppServiceQueryAPI is an implementation of api.AppServiceQueryAPI
 type AppServiceQueryAPI struct {
-	HTTPClient *gomatrixserverlib.Client
+	HTTPClient *http.Client
 	Cfg        *config.Dendrite
 }
 
@@ -65,8 +64,9 @@ func (a *AppServiceQueryAPI) RoomAliasExists(
 			if err != nil {
 				return err
 			}
+			req = req.WithContext(ctx)
 
-			resp, err := a.HTTPClient.DoHTTPRequest(ctx, req)
+			resp, err := a.HTTPClient.Do(req)
 			if resp != nil {
 				defer func() {
 					err = resp.Body.Close()
@@ -130,7 +130,7 @@ func (a *AppServiceQueryAPI) UserIDExists(
 			if err != nil {
 				return err
 			}
-			resp, err := a.HTTPClient.DoHTTPRequest(ctx, req)
+			resp, err := a.HTTPClient.Do(req.WithContext(ctx))
 			if resp != nil {
 				defer func() {
 					err = resp.Body.Close()
diff --git a/appservice/workers/transaction_scheduler.go b/appservice/workers/transaction_scheduler.go
index 47d447c2..4dab00bd 100644
--- a/appservice/workers/transaction_scheduler.go
+++ b/appservice/workers/transaction_scheduler.go
@@ -42,7 +42,7 @@ var (
 // size), then send that off to the AS's /transactions/{txnID} endpoint. It also
 // handles exponentially backing off in case the AS isn't currently available.
 func SetupTransactionWorkers(
-	client *gomatrixserverlib.Client,
+	client *http.Client,
 	appserviceDB storage.Database,
 	workerStates []types.ApplicationServiceWorkerState,
 ) error {
@@ -58,7 +58,7 @@ func SetupTransactionWorkers(
 
 // worker is a goroutine that sends any queued events to the application service
 // it is given.
-func worker(client *gomatrixserverlib.Client, db storage.Database, ws types.ApplicationServiceWorkerState) {
+func worker(client *http.Client, db storage.Database, ws types.ApplicationServiceWorkerState) {
 	log.WithFields(log.Fields{
 		"appservice": ws.AppService.ID,
 	}).Info("Starting application service")
@@ -200,7 +200,7 @@ func createTransaction(
 // send sends events to an application service. Returns an error if an OK was not
 // received back from the application service or the request timed out.
 func send(
-	client *gomatrixserverlib.Client,
+	client *http.Client,
 	appservice config.ApplicationService,
 	txnID int,
 	transaction []byte,
@@ -213,7 +213,7 @@ func send(
 		return err
 	}
 	req.Header.Set("Content-Type", "application/json")
-	resp, err := client.DoHTTPRequest(context.TODO(), req)
+	resp, err := client.Do(req)
 	if err != nil {
 		return err
 	}