1 Correct answer
Hi everyone,
I have looked into this and think I have found:
- a likely cause of the issue;
- a solution.
1. Likely cause: Steps to reproduce
1.1 Save the following line of code as a CFM file.
<cfdump var="#getHTTPRequestData()#">
1.2 Launch the code, in turn, on the most recent versions of the browsers Chrome, Firefox and Edge.
A picture of the result:
1.3 Take a look at the headers. You will see that Firefox, and Firefox alone, has the PRIORITY header. The value of this header is i
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21
Replies
Hi everyone,
I have looked into this and think I have found:
- a likely cause of the issue;
- a solution.
1. Likely cause: Steps to reproduce
1.1 Save the following line of code as a CFM file.
<cfdump var="#getHTTPRequestData()#">
1.2 Launch the code, in turn, on the most recent versions of the browsers Chrome, Firefox and Edge.
A picture of the result:
1.3 Take a look at the headers. You will see that Firefox, and Firefox alone, has the PRIORITY header. The value of this header is in the form "u=N", where u denotes urgency and N is an integer between 0 and 7 inclusive. My hypothesis is that that is where the "u=4" in the error comes from.
It just so happens that the scheduled-tasks form in the ColdFusion Administrator has a field named PRIORITY.
My hypothesis is that the following happens in the action-page of the ColdFusion Administrator when it processes the scheduled-task form. It incorrectly populates the PRIORITY form-field with the value of the PRIORITY header.
1.4 Steps to demonstrate the issue:
(a) Open the ColdFusion Administrator in Firefox. Create a new scheduled-task in the Administrator.
(b) Close then restart the ColdFusion Administrator, and go to the Scheduled Tasks page.
(c) Click on the button to edit the task you created in step (a).
(d) Press F12 to launch Developer Tools.
(e) Click on the button Submit Changes.
1.5 Examine the request headers in Developer Tools. You will see the PRIORITY request-header. Its value is "u=4".
2. A Solution
The solution I propose is to temporarily disable the PRIORITY header in Firefox. To do so, proceed as follows:
2.1 Type about:config in the address field in Firefox, and press <ENTER>. That will open Firefox's configuration page. Press the button to accept the risks.
2.2 In the search field, type priority. You will then obtain a list of all the settings that contain the word "priority".
2.3 Locate the setting network.http.priority_header.enabled. Its default value is true. Double-click on the setting, thereby toggling its value to false.
2.4 Close Firefox.
2.5 Reopen Firefox. Launch the ColdFusion Administrator and edit the scheduled task you created in step 1.4 (a).
You should no longer get the error 'For input string: "u=4"'
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