[tor-commits] [meek/master] Read the requestSpec outside of roundTrip.

[dcf@xxxxxxxxxxxxxx]

commit 3c386e18948a161c925563dfb47212221ee85258
Author: David Fifield <david@xxxxxxxxxxxxxxx>
Date:   Sat Mar 30 12:10:19 2019 -0600

    Read the requestSpec outside of roundTrip.
    
    The difference here is that we don't send a JSON error response as a
    result of errors at this stage.
---
 webextension/native/main.go | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/webextension/native/main.go b/webextension/native/main.go
index cbb48bf..e5f3a74 100644
--- a/webextension/native/main.go
+++ b/webextension/native/main.go
@@ -181,19 +181,10 @@ func sendWebExtensionMessage(w io.Writer, message []byte) error {
 // browser. Wait for the browser to send back a webExtensionRoundTripResponse
 // (which actually happens in inFromBrowserLoop--that function uses the ID to
 // find this goroutine again). Return a responseSpec object or an error.
-func roundTrip(conn net.Conn, outToBrowserChan chan<- []byte) (responseSpec, error) {
-	err := conn.SetReadDeadline(time.Now().Add(localReadTimeout))
-	if err != nil {
-		return nil, err
-	}
-	req, err := readRequestSpec(conn)
-	if err != nil {
-		return nil, err
-	}
-
+func roundTrip(req requestSpec, outToBrowserChan chan<- []byte) (responseSpec, error) {
 	// Generate an ID that will allow us to match a response to this request.
 	idRaw := make([]byte, 8)
-	_, err = rand.Read(idRaw)
+	_, err := rand.Read(idRaw)
 	if err != nil {
 		return nil, err
 	}
@@ -251,7 +242,16 @@ type errorResponseSpec struct {
 func handleConn(conn net.Conn, outToBrowserChan chan<- []byte) error {
 	defer conn.Close()
 
-	resp, err := roundTrip(conn, outToBrowserChan)
+	err := conn.SetReadDeadline(time.Now().Add(localReadTimeout))
+	if err != nil {
+		return err
+	}
+	req, err := readRequestSpec(conn)
+	if err != nil {
+		return err
+	}
+
+	resp, err := roundTrip(req, outToBrowserChan)
 	if err != nil {
 		resp = &errorResponseSpec{Error: err.Error()}
 	}



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