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Unable to attach large file via REST API

Hari_k0bigv

Hi All,

I'm using below REST API to attach files to JIRA using powershell script.

rest/api/2/issue/808569/attachments

I'm able to upload files up to 8kb , but files greater than 8kb getting '403 forbidden" error.

I have not done any changes to the credentials, its the same script only the file path is changed.

Manually I'm able to upload files greater than 100mb but via API I'm not able upload more than 8kb.

Additionally via POSTMAN I'm able to attach files of any size, only through powershell facing this issue.

Is there any configuration to increase the limit ? or any other suggestion?

Accepted answers

Rudy Holtkamp

Hi @Hari & Welcome to the community,

Could you post your full code?

Did you check the REST API documentation of the attachments? And did you include the header:

<span>-</span>H <span>"X-Atlassian-Token: nocheck"</span>

Here you can find an example which is for server/datacenter: https://confluence.atlassian.com/jirakb/how-to-add-an-attachment-to-a-jira-issue-using-rest-api-699957734.html

All comments

Rudy Holtkamp

Hi @Hari & Welcome to the community,

Could you post your full code?

Did you check the REST API documentation of the attachments? And did you include the header:

<span>-</span>H <span>"X-Atlassian-Token: nocheck"</span>

Here you can find an example which is for server/datacenter: https://confluence.atlassian.com/jirakb/how-to-add-an-attachment-to-a-jira-issue-using-rest-api-699957734.html

Hari_k0bigv

Hi @Rudy Holtkamp

Below is my code --> I have masked username/password and url for security concerns.

# Define username and password
$username = "XYZ"
$password = "XYZ"
# Encode the username and password for basic authentication
$base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes("${username}:${password}"))
# Define the headers including the Authorization header
$headers = @{
"X-Atlassian-Token" = "nocheck"
"Authorization" = "Basic $base64AuthInfo"
}
# Define the file to be uploaded
$filePath = "XYZ"

# Ensure the file exists
if (-Not (Test-Path $filePath)) {
Write-Host "File does not exist."
exit
}
# Create a boundary for the multipart/form-data
$boundary = [System.Guid]::NewGuid().ToString()
$lf = "`r`n"
# Create the multipart content manually
$bodyLines = @(
"--$boundary",
"Content-Disposition: form-data; name=`"file`"; filename=`"$([System.IO.Path]::GetFileName($filePath))`"",
"Content-Type: application/octet-stream",
"",
[System.IO.File]::ReadAllText($filePath, [System.Text.Encoding]::Default),
"--$boundary--"
) -join $lf
# Convert the body to bytes
$bodyBytes = [System.Text.Encoding]::Default.GetBytes($bodyLines)
# Invoke the web request to upload the file
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
try {
$response = Invoke-WebRequest -Uri "https://jira.com/rest/api/2/issue/808569/attachments"`
-Method Post `
-Headers $headers `
-ContentType "multipart/form-data; boundary=$boundary" `
-Body $bodyBytes `
-Verbose
Write-Host "Response: $($response.Content)"
} catch {
Write-Host "Error: $_"
}

The above code works fine when i upload files below 8kb, above that i get "403 forbidden" error.

Any help to resolve above issue would be appreciated.

Rudy Holtkamp

The issue with your code likely stems from how the file content is being read and converted into the body of the multipart/form-data request. Specifically, using [System.IO.File]::ReadAllText reads the entire file as a single string. This approach can run into limitations and may not handle binary data correctly, leading to issues with larger files or files containing non-text data.

Here's a revised version of your script that correctly handles file content as binary data:

# Define username and password

$username = "XYZ"

$password = "XYZ"

# Encode the username and password for basic authentication

$base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes("${username}:${password}"))

# Define the headers including the Authorization header

$headers = {

"X-Atlassian-Token" = "nocheck"

"Authorization" = "Basic $base64AuthInfo"

}

# Define the file to be uploaded

$filePath = "XYZ"

# Ensure the file exists

if (-Not (Test-Path $filePath)) {

Write-Host "File does not exist."

exit

}

# Create a boundary for the multipart/form-data

$boundary = [System.Guid]::NewGuid().ToString()

$lf = "`r`n"

# Read the file content as bytes

$fileBytes = [System.IO.File]::ReadAllBytes($filePath)

# Create the multipart content manually

$bodyLines = (

"--$boundary",

"Content-Disposition: form-data; name=`"file`"; filename=`"$([System.IO.Path]::GetFileName($filePath))`"",

"Content-Type: application/octet-stream",

"",

[System.Convert]::ToBase64String($fileBytes),

"--$boundary--"

) -join $lf

# Convert the body to bytes

$bodyBytes = [System.Text.Encoding]::ASCII.GetBytes($bodyLines)

# Invoke the web request to upload the file

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

try {

$response = Invoke-WebRequest -Uri "https://jira.com/rest/api/2/issue/808569/attachments" `

-Method Post `

-Headers $headers `

-ContentType "multipart/form-data; boundary=$boundary" `

-Body $bodyBytes `

-Verbose

Write-Host "Response: $($response.Content)"

}

catch {

Write-Host "Error: $_"

}

Hari_k0bigv

Hi @Rudy Holtkamp ,

I executed above code and ran into same "403 forbidden" error. Please find below error.

Invoke-WebRequest : 403 Forbidden
At line:1 char:13
+ $response = Invoke-WebRequest -Uri "https://itsm-servicedesk.temenos. ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:Htt
pWebRequest) [Invoke-WebRequest], WebException
+ FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShe
ll.Commands.InvokeWebRequestCommand

However the above code is working fine for file size less than 8kb.

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