Provisional headers are shown net_error = -3

[joe loliner]

when i send ajax request in http, always get "Provisional headers are shown" info and request has been interrupted.

Although i can get the resource after few times retry, but before get the resource, i must to wait, wait, wait... it waste a lot of time.

then i can get some log in chrome://net-internals

=======================================

Start Time: 2017-06-22 11:22:51.432

t=36330 [st=    0] +REQUEST_ALIVE  [dt=16022]

t=36331 [st=    1]    URL_REQUEST_DELEGATE  [dt=0]

t=36331 [st=    1]   +URL_REQUEST_START_JOB  [dt=16021]

                      --> load_flags = 33026 (BYPASS_CACHE | MAYBE_USER_GESTURE | VERIFY_EV_CERT)

                      --> method = "GET"

                      --> priority = "MEDIUM"

                      --> url = "http://video.cdn.example1.com/video/netdisk-videotran-ningbo/448990bbcfbccf9228c6aa4a68e53b4b_8242_1_ts?iv=1&uo=any&to=vcb&range=7277291-8480729&xcode=b49..."

t=36331 [st=    1]      URL_REQUEST_DELEGATE  [dt=0]

t=36331 [st=    1]      HTTP_CACHE_GET_BACKEND  [dt=0]

t=36331 [st=    1]      HTTP_CACHE_DOOM_ENTRY  [dt=0]

                        --> net_error = -2 (ERR_FAILED)

t=36331 [st=    1]      HTTP_CACHE_CREATE_ENTRY  [dt=0]

t=36331 [st=    1]      HTTP_CACHE_ADD_TO_ENTRY  [dt=0]

t=36331 [st=    1]     +HTTP_STREAM_REQUEST  [dt=201]

t=36332 [st=    2]        HTTP_STREAM_REQUEST_STARTED_JOB

                          --> source_dependency = 8941 (HTTP_STREAM_JOB)

t=36532 [st=  202]        HTTP_STREAM_REQUEST_BOUND_TO_JOB

                          --> source_dependency = 8941 (HTTP_STREAM_JOB)

t=36532 [st=  202]     -HTTP_STREAM_REQUEST

t=36532 [st=  202]     +HTTP_TRANSACTION_SEND_REQUEST  [dt=1]

t=36532 [st=  202]        HTTP_TRANSACTION_SEND_REQUEST_HEADERS

                          --> GET /video/netdisk-videotran-ningbo/448990bbcfbccf9228c6aa4a68e53b4b_8242_1_ts?iv=1&uo=any&to=vcb&range=7277291-8480729&xcode=b49... HTTP/1.1

                              Host: video.cdn.baidupcs.com

                              Connection: keep-alive

                              Pragma: no-cache

                              Cache-Control: no-cache

                              X-Requested-With: ShockwaveFlash/26.0.0.131

                              User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.28 Safari/537.36

                              Accept: */*

                              Referer: http://example2.com/play/video

                              Accept-Encoding: gzip, deflate, sdch

                              Accept-Language: zh-CN,zh;q=0.8

t=36533 [st=  203]     -HTTP_TRANSACTION_SEND_REQUEST

t=36533 [st=  203]     +HTTP_TRANSACTION_READ_HEADERS  [dt=15819]

t=36533 [st=  203]       +HTTP_STREAM_PARSER_READ_HEADERS  [dt=15819]

t=52351 [st=16021]          CANCELLED

t=52352 [st=16022]   -URL_REQUEST_START_JOB

                      --> net_error = -3 (ERR_ABORTED)

t=52352 [st=16022]    URL_REQUEST_DELEGATE  [dt=0]

t=52352 [st=16022] -REQUEST_ALIVE

=====================================

anybody can tell me what happened? and there have some way to avoid this?

[PhistucK]

net-dev might be more helpful.

☆PhistucK

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