If you could create & attach a network log per https://dev.chromium.org/for-testers/providing-network-details that would be very helpful in diagnosing this, thanks!

What model router do you have?  If you're getting ERR_INVALID_HTTP_RESPONSE, that router's using HTTP/0.9, not HTTP/1.1 or HTTP/1.0.

Tenda D301 (Broadcom rebrand/based afaik)

Inspect network says HTTP/1.1 -> http://i.imgur.com/Yroobfi.png 

network log attached. 

Deleted: net-internals-log.json 432 KB

net-internals-log.json 432 KB View Download

Could you enable byte logging, so we can verify whether it's really using HTTP/0.9 or not?  This is disabled by default both to save space, and to avoid leaking cookies and other credentials.

In order to avoid leaking any cookies from any background requests, close all other tabs before opening up about:net-internals#capture, select "Include the actual bytes sent/received", and then go to the #export tab and export the log as before.  Also, email the log to me directly (mmenke@chromium.org) instead of posting it here, to be extra careful about leaking anything.

Thanks for emailing me the log, blackwidow.za!

So, looking at the log, I can confirm that we are indeed getting an HTTP/0.9 response.  Whatever is claiming it's HTTP/1.1 may be using an HTTP library that adds a bogus HTTP/1.1 response header to HTTP/0.9 responses or something.

It's unclear if this is a problem just with the Tenda D301, or with the Broadcom base model.  Since rebrands use custom firmware, which modifies the UI, it's conceivable that they update the entire response including removing the HTTP/1.x response header.

This is the first issue reported from our attempt to remove HTTP/0.9 support for security reasons.  We'll need to take this into consideration when deciding if we want to ship the removal to stable, add a way to re-enable it, or go with some other mitigation.

Oh, and I don't mean to sound dismissive of this - breaking compatibility with a home router is a big deal.  But the alternative is most likely being stuck supporting HTTP/0.9 in some form forever, given how rarely router firmware is updated.

#7: Agree that's most likely decision. Can you add a milestone to this associated with HTTP/0.9 deprecation (I forget which release that is slated for).

Sure, it's M-54.

Can't be helped if they can't support their products. Can't even install the "latest" update. 

Thanks for the help. 

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a2dcd3bf444490b1eaf7aaafaa740310dc846137

commit a2dcd3bf444490b1eaf7aaafaa740310dc846137
Author: mmenke <mmenke@chromium.org>
Date: Tue Aug 16 21:49:41 2016

Revert HTTP/0.9 removal

This broke compatibility with the Tenda D301 router, which is using
HTTP/0.9 (Presumably because of a bug in the router's firmare).
We're going to go with a less aggressive deprecation instead, at least
for now - we'll just support HTTP/0.9 on default ports only.

I'll try to be more aggressive in future Chrome releases (No HTTP/0.9
over SSL, for instance).

Reverted CL description:
 Remove HTTP/0.9 support from HttpStreamParser.

 HTTP/0.9 is an ancient protocol with some fundamental design problems.
 This CL remove support for it, while leaving most of the code needed to
 support HTTP/0.9 in place, in case this has to be reverted late in the
 game, or we decide to add a (temporary) enterprise policy to enable it.

 BUG= 624462 
 Committed: https://crrev.com/e2172e4b83ad33aef354618ce2e092db85baee1d
 Cr-Commit-Position: refs/heads/master@{#405687}

TBR=eroman@chromium.org, ricea@chromium.org,  jwd@chromium.org
BUG= 637017 

Review-Url: https://codereview.chromium.org/2247003003
Cr-Commit-Position: refs/heads/master@{#412348}

[modify] https://crrev.com/a2dcd3bf444490b1eaf7aaafaa740310dc846137/net/http/http_network_transaction_unittest.cc
[modify] https://crrev.com/a2dcd3bf444490b1eaf7aaafaa740310dc846137/net/http/http_stream_parser.cc
[modify] https://crrev.com/a2dcd3bf444490b1eaf7aaafaa740310dc846137/net/http/http_stream_parser_unittest.cc
[modify] https://crrev.com/a2dcd3bf444490b1eaf7aaafaa740310dc846137/net/url_request/url_request_http_job_unittest.cc
[modify] https://crrev.com/a2dcd3bf444490b1eaf7aaafaa740310dc846137/net/websockets/websocket_stream_test.cc
[modify] https://crrev.com/a2dcd3bf444490b1eaf7aaafaa740310dc846137/third_party/WebKit/LayoutTests/http/tests/websocket/handshake-error-expected.txt
[modify] https://crrev.com/a2dcd3bf444490b1eaf7aaafaa740310dc846137/third_party/WebKit/LayoutTests/http/tests/websocket/handshake-fail-by-maxlength-expected.txt
[modify] https://crrev.com/a2dcd3bf444490b1eaf7aaafaa740310dc846137/third_party/WebKit/LayoutTests/http/tests/websocket/handshake-fail-by-prepended-null-expected.txt

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/398c105ea8391473126021104554d70fda08324b

commit 398c105ea8391473126021104554d70fda08324b
Author: mmenke <mmenke@chromium.org>
Date: Wed Aug 31 16:06:57 2016

Only allow HTTP/0.9 support on default ports.

Also add a group policy to allow HTTP/0.9 support on other
ports, which I plan to remove in a couple revisions.

BUG= 624462 , 637017 

Review-Url: https://codereview.chromium.org/2253653002
Cr-Commit-Position: refs/heads/master@{#415643}

[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/chrome/browser/io_thread.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/chrome/browser/io_thread.h
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/chrome/browser/io_thread_unittest.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/chrome/browser/net/errorpage_browsertest.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/chrome/test/data/policy/policy_test_cases.json
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/components/policy/resources/policy_templates.json
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_basic_state.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_basic_state.h
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_basic_state_unittest.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_basic_stream.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_basic_stream.h
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_network_session.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_network_session.h
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_network_transaction_unittest.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_stream_factory_impl_job.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_stream_factory_impl_job_controller_unittest.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_stream_parser.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_stream_parser.h
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/http/http_stream_parser_unittest.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/spdy/spdy_test_util_common.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/spdy/spdy_test_util_common.h
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/test/embedded_test_server/default_handlers.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/net/websockets/websocket_basic_handshake_stream.cc
[modify] https://crrev.com/398c105ea8391473126021104554d70fda08324b/tools/metrics/histograms/histograms.xml

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/400eb587ad05c2aef8740e2bff550083ac90ea2d

commit 400eb587ad05c2aef8740e2bff550083ac90ea2d
Author: mmenke <mmenke@chromium.org>
Date: Wed Aug 31 17:20:48 2016

Revert "Only allow HTTP/0.9 support on default ports."

The CL broke some websocket layout tests, will reland once that's
worked out.

This reverts commit 398c105ea8391473126021104554d70fda08324b.

Also add a group policy to allow HTTP/0.9 support on other
ports, which I plan to remove in a couple revisions.

BUG= 624462 ,  637017 
Committed: https://crrev.com/398c105ea8391473126021104554d70fda08324b
Cr-Commit-Position: refs/heads/master@{#415643}
TBR=eroman@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2297263002
Cr-Commit-Position: refs/heads/master@{#415668}

[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/chrome/browser/io_thread.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/chrome/browser/io_thread.h
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/chrome/browser/io_thread_unittest.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/chrome/browser/net/errorpage_browsertest.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/chrome/test/data/policy/policy_test_cases.json
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/components/policy/resources/policy_templates.json
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_basic_state.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_basic_state.h
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_basic_state_unittest.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_basic_stream.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_basic_stream.h
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_network_session.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_network_session.h
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_network_transaction_unittest.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_stream_factory_impl_job.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_stream_factory_impl_job_controller_unittest.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_stream_parser.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_stream_parser.h
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/http/http_stream_parser_unittest.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/spdy/spdy_test_util_common.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/spdy/spdy_test_util_common.h
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/test/embedded_test_server/default_handlers.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/net/websockets/websocket_basic_handshake_stream.cc
[modify] https://crrev.com/400eb587ad05c2aef8740e2bff550083ac90ea2d/tools/metrics/histograms/histograms.xml

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a7da6da864dce77fe1c931653635c3ac757219cb

commit a7da6da864dce77fe1c931653635c3ac757219cb
Author: mmenke <mmenke@chromium.org>
Date: Thu Sep 01 21:56:52 2016

Re-land:  Only allow HTTP/0.9 support on default ports.

Also add a group policy to allow HTTP/0.9 support on other
ports, which I plan to remove in a couple revisions.

Originally landed in https://codereview.chromium.org/2253653002/
Reverted in https://codereview.chromium.org/2297263002/
for breaking WebSocket tests.

TBR=eroman@chromium.org
BUG= 624462 ,  637017 

Review-Url: https://codereview.chromium.org/2299703003
Cr-Commit-Position: refs/heads/master@{#416074}

[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/chrome/browser/io_thread.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/chrome/browser/io_thread.h
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/chrome/browser/io_thread_unittest.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/chrome/browser/net/errorpage_browsertest.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/chrome/test/data/policy/policy_test_cases.json
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/components/policy/resources/policy_templates.json
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_basic_state.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_basic_state.h
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_basic_state_unittest.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_basic_stream.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_basic_stream.h
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_network_session.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_network_session.h
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_network_transaction_unittest.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_stream_factory_impl_job.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_stream_factory_impl_job_controller_unittest.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_stream_parser.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_stream_parser.h
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/http/http_stream_parser_unittest.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/spdy/spdy_test_util_common.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/spdy/spdy_test_util_common.h
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/test/embedded_test_server/default_handlers.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/net/websockets/websocket_basic_handshake_stream.cc
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/third_party/WebKit/LayoutTests/http/tests/websocket/handshake-error-expected.txt
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/third_party/WebKit/LayoutTests/http/tests/websocket/handshake-fail-by-maxlength-expected.txt
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/third_party/WebKit/LayoutTests/http/tests/websocket/handshake-fail-by-prepended-null-expected.txt
[modify] https://crrev.com/a7da6da864dce77fe1c931653635c3ac757219cb/tools/metrics/histograms/histograms.xml