HTTP_STREAM_PARSER_READ_HEADERS之后取消AJAX请求

AJAX requests are being cancelled after HTTP_STREAM_PARSER_READ_HEADERS

本文关键字：取消 AJAX 请求 之后 READ STREAM PARSER HTTP HEADERS      更新时间：2023-12-10

我的XMLHttpRequest正在被取消，但似乎仍然可以成功工作（数据到达服务器）。另一个建议调查chrome事件的问题是有原因的，它似乎在HTTP_STREAM_PARSER_READ_HEADERS 之后立即取消

以下是请求事件，以及可能导致这种情况的原因，或者我可以尝试进行进一步的故障排除？：

t=1125 [st= 0] +REQUEST_ALIVE [dt=250]
t=1125 [st= 0] URL_REQUEST_DELEGATE [dt=0]
t=1125 [st= 0] +URL_REQUEST_START_JOB [dt=250]
--> load_flags = 33024 (MAYBE_USER_GESTURE | VERIFY_EV_CERT)
--> method = "PUT"
--> priority = "LOW"
--> upload_id = "0"
--> url = [Redacted]
t=1125 [st= 0] +URL_REQUEST_DELEGATE [dt=1]
t=1125 [st= 0] DELEGATE_INFO [dt=1]
--> delegate_info = "extension Tampermonkey"
t=1126 [st= 1] -URL_REQUEST_DELEGATE
t=1126 [st= 1] HTTP_CACHE_GET_BACKEND [dt=0]
t=1126 [st= 1] HTTP_CACHE_OPEN_ENTRY [dt=0]
t=1126 [st= 1] HTTP_CACHE_ADD_TO_ENTRY [dt=0]
t=1126 [st= 1] HTTP_CACHE_READ_INFO [dt=0]
t=1126 [st= 1] URL_REQUEST_DELEGATE [dt=0]
t=1126 [st= 1] +HTTP_STREAM_REQUEST [dt=198]
t=1126 [st= 1] HTTP_STREAM_REQUEST_STARTED_JOB
--> source_dependency = 82675 (HTTP_STREAM_JOB)
t=1324 [st=199] HTTP_STREAM_REQUEST_BOUND_TO_JOB
--> source_dependency = 82675 (HTTP_STREAM_JOB)
t=1324 [st=199] -HTTP_STREAM_REQUEST
t=1324 [st=199] +HTTP_TRANSACTION_SEND_REQUEST [dt=0]
t=1324 [st=199] HTTP_TRANSACTION_SEND_REQUEST_HEADERS
--> PUT /users/[Redacted] HTTP/1.1
Host: [Redacted]
Connection: keep-alive
Content-Length: 4545
X-NewRelic-ID: UwUDUlFADQEGUlFb
Origin: [Redacted]
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.110 Safari/537.36
Content-Type: application/json
Accept: /
X-Requested-With: XMLHttpRequest
Referer: [Redacted]
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8
Cookie: [1850 bytes were stripped]
t=1324 [st=199] HTTP_TRANSACTION_SEND_REQUEST_BODY
--> did_merge = false
--> is_chunked = false
--> length = 4545
t=1324 [st=199] -HTTP_TRANSACTION_SEND_REQUEST
t=1324 [st=199] +HTTP_TRANSACTION_READ_HEADERS [dt=51]
t=1324 [st=199] +HTTP_STREAM_PARSER_READ_HEADERS [dt=51]
t=1374 [st=249] CANCELLED
t=1375 [st=250] -URL_REQUEST_START_JOB
--> net_error = -3 (ERR_ABORTED)
t=1375 [st=250] URL_REQUEST_DELEGATE [dt=0]
t=1375 [st=250] -REQUEST_ALIVE

我在chrome://net-internals/#events中得到了相同的错误。在我的案例中，AJAX请求的形式如下： $.ajax({ ... timeout: 3000 // coming dynamically in my case ...}); 因此，所有耗时超过3000ms的请求都会被自动取消。

现在，您的解决方案取决于您的应用程序，是希望增加客户端的超时还是改进服务器端的服务。

我们也面临同样的问题。最后发现AJAX请求（来自UI代码）错误地将超时设置为3秒，而不是30秒。更新超时修复了

问题

在我的例子中，相同的请求被执行了两次（来自代码中的其他地方）。因此，第二个请求取消了第一个请求，但由于第二个成功，数据从服务器返回正常。太棒了！！！

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