commit ad937183266423425e166b417659b1db14aaeced Author: Kathy Brade <brade@pearlcrescent.com> Date: Thu Jun 1 11:06:09 2017 -0400 Bug 21627: Ignore HTTP 304 responses when checking redirects. Avoid noise on the error console when a page is reloaded. Since 304 responses do not have Location headers, it is safe to ignore such responses inside our http-on-examine-response observer. --- src/components/content-policy.js | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/components/content-policy.js b/src/components/content-policy.js index 365a5e5..a63919c 100644 --- a/src/components/content-policy.js +++ b/src/components/content-policy.js @@ -128,9 +128,9 @@ var requestObserver = { // If this is a redirect... // - // Note: Technically `304 Not Modifed` isn't a redirect, but receiving that - // to the proscribed schemes is nonsensical. - if (aStatus >= 300 && aStatus < 400) { + // Note: `304 Not Modifed` isn't a redirect, so there is no Location header to check + // in that case. + if (aStatus >= 300 && aStatus < 400 && aStatus != 304) { let location = aChannel.getResponseHeader("Location"); let aUri = this.ioService.newURI(location, null, null);