gb vendor updates

gb vendor update github.com/matrix-org/gomatrixserverlib
gb vendor update github.com/matrix-org/util

vendor/manifest

@@ -141,7 +141,7 @@
 		{
 			"importpath": "github.com/matrix-org/gomatrixserverlib",
 			"repository": "https://github.com/matrix-org/gomatrixserverlib",
-			"revision": "27d214da42f51906c2038ad3ddcffac9103c8e8f",
+			"revision": "fb17c27f65a0699b0d15f5311a530225b4aea5e0",
 			"branch": "master"
 		},
 		{
@@ -153,7 +153,7 @@
 		{
 			"importpath": "github.com/matrix-org/util",
 			"repository": "https://github.com/matrix-org/util",
-			"revision": "53326ed5598b226681112cbd441f59f3cffc9c82",
+			"revision": "cf7e2e3871b7ae39106a1763312deaaf0c139531",
 			"branch": "master"
 		},
 		{

vendor/src/github.com/matrix-org/gomatrixserverlib/client.go

@@ -92,7 +92,13 @@ func (f *federationTripper) RoundTrip(r *http.Request) (*http.Response, error) {
 	if err != nil {
 		return nil, err
 	}
+
+	if len(dnsResult.Addrs) == 0 {
+		return nil, fmt.Errorf("no address found for matrix host %v", serverName)
+	}
+
 	var resp *http.Response
+	// TODO: respect the priority and weight fields from the SRV record
 	for _, addr := range dnsResult.Addrs {
 		u := makeHTTPSURL(r.URL, addr)
 		r.URL = &u
@@ -100,8 +106,12 @@ func (f *federationTripper) RoundTrip(r *http.Request) (*http.Response, error) {
 		if err == nil {
 			return resp, nil
 		}
+		util.GetLogger(r.Context()).Warnf("Error sending request to %s: %v",
+			u.String(), err)
 	}
-	return nil, fmt.Errorf("no address found for matrix host %v", serverName)
+
+	// just return the most recent error
+	return nil, err
 }
 
 // LookupUserInfo gets information about a user from a given matrix homeserver
@@ -253,9 +263,10 @@ func (fc *Client) CreateMediaDownloadRequest(
 func (fc *Client) doHTTPRequest(ctx context.Context, req *http.Request) (*http.Response, error) {
 	reqID := util.RandomString(12)
 	logger := util.GetLogger(ctx).WithField("server", req.URL.Host).WithField("out.req.ID", reqID)
+	newCtx := util.ContextWithLogger(ctx, logger)
 
 	logger.Infof("Outgoing request %s %s", req.Method, req.URL)
-	resp, err := fc.client.Do(req.WithContext(ctx))
+	resp, err := fc.client.Do(req.WithContext(newCtx))
 	if err != nil {
 		logger.Infof("Outgoing request %s %s failed with %v", req.Method, req.URL, err)
 		return nil, err

vendor/src/github.com/matrix-org/gomatrixserverlib/federationclient.go

@@ -36,6 +36,7 @@ func NewFederationClient(
 func (ac *FederationClient) doRequest(ctx context.Context, r FederationRequest, resBody interface{}) error {
 	reqID := util.RandomString(12)
 	logger := util.GetLogger(ctx).WithField("server", r.fields.Destination).WithField("out.req.ID", reqID)
+	newCtx := util.ContextWithLogger(ctx, logger)
 
 	if err := r.Sign(ac.serverName, ac.serverKeyID, ac.serverPrivateKey); err != nil {
 		return err
@@ -47,7 +48,7 @@ func (ac *FederationClient) doRequest(ctx context.Context, r FederationRequest,
 	}
 
 	logger.Infof("Outgoing request %s %s", req.Method, req.URL)
-	res, err := ac.client.Do(req.WithContext(ctx))
+	res, err := ac.client.Do(req.WithContext(newCtx))
 	if res != nil {
 		defer res.Body.Close() // nolint: errcheck
 	}

vendor/src/github.com/matrix-org/util/context.go

@@ -35,3 +35,8 @@ func GetLogger(ctx context.Context) *log.Entry {
 	}
 	return l.(*log.Entry)
 }
+
+// ContextWithLogger creates a new context, which will use the given logger.
+func ContextWithLogger(ctx context.Context, l *log.Entry) context.Context {
+	return context.WithValue(ctx, ctxValueLogger, l)
+}

vendor/src/github.com/matrix-org/util/json.go

@@ -99,7 +99,7 @@ func Protect(handler http.HandlerFunc) http.HandlerFunc {
 func RequestWithLogging(req *http.Request) *http.Request {
 	reqID := RandomString(12)
 	// Set a Logger and request ID on the context
-	ctx := context.WithValue(req.Context(), ctxValueLogger, log.WithFields(log.Fields{
+	ctx := ContextWithLogger(req.Context(), log.WithFields(log.Fields{
 		"req.method": req.Method,
 		"req.path":   req.URL.Path,
 		"req.id":     reqID,