Image upload fails with elementX

[fuomag9]

Issue

Hi, uploading images with elementX does not work, while it does with element, so I do not believe this is a server issue. Furthermore the logs report a Request must specify a Content-Length error, which seems a client side misconfiguration to me

I'm using caddy as my reverse proxy, with a fix for TLS1.2 clients due to element-hq/element-x-ios#786

chat.fuo.fi {

import bind-ipv6-public
import bind-ipv4-public

reverse_proxy /_matrix/* http://localmatrix:8008
reverse_proxy /_synapse/client/* http://localmatrix:8008

request_body {
  max_size 100MB
}


import fix-elementx

# HSTS (63072000 seconds)
header / Strict-Transport-Security "max-age=63072000"
}

(fix-elementx) {

@tls12only {
header_regexp User-Agent Element X
}

tls @tls12only {
protocols tls1.2 tls1.2
}


}

Logs

2023-08-08T16:08:23.084759Z  INFO root: elementx: MediaUploadingPreprocessor.swift:259: No GPS metadata found. Returning original image
2023-08-08 18:08:23.943248+0200 ElementX[13991:2406456] [SwiftUI] Publishing changes from background threads is not allowed; make sure to publish values from the main thread (via operators like receive(on:)) on model updates.
2023-08-08T16:08:23.944621Z DEBUG root:send_attachment:send{homeserver="https://chat.fuo.fi/" server_versions=[V1_0, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6] config=RequestConfig { timeout: 300s } request_id="REQ-92" request_size="71.3 kiB" path="/_matrix/media/v3/upload"}: matrix_sdk::http_client: crates/matrix-sdk/src/http_client/mod.rs:198: Sending request
2023-08-08T16:08:23.970961Z DEBUG root:send_attachment:send{homeserver="https://chat.fuo.fi/" server_versions=[V1_0, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6] config=RequestConfig { timeout: 300s } request_id="REQ-93" request_size="2.4 MiB" path="/_matrix/media/v3/upload"}: matrix_sdk::http_client: crates/matrix-sdk/src/http_client/mod.rs:198: Sending request
2023-08-08 18:08:23.982618+0200 ElementX[13991:2403520] [default] Image analysis failed with error Error Domain=com.apple.VisionKit.ImageAnalyzer Code=-4 "Device Not Supported" UserInfo={NSLocalizedDescription=Device Not Supported} #ImageAnalysis
2023-08-08T16:08:24.100427Z DEBUG root:send_attachment:send{homeserver="https://chat.fuo.fi/" server_versions=[V1_0, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6] config=RequestConfig { timeout: 300s } request_id="REQ-92" request_size="71.3 kiB" path="/_matrix/media/v3/upload" status=400 response_size="71 B"}: matrix_sdk::http_client: crates/matrix-sdk/src/http_client/mod.rs:208: Error while sending request: Api(Server(ClientApi(Error { status_code: 400, body: Standard { kind: Unknown, message: "Request must specify a Content-Length" } })))
2023-08-08T16:08:24.101315Z ERROR root: elementx: MediaUploadPreviewScreenViewModel.swift:63: Failed sending attachment with error: failedSendingMedia
2023-08-08 18:08:24.137048+0200 ElementX[13991:2406456] [default] Image analysis failed with error Error Domain=com.apple.VisionKit.ImageAnalyzer Code=-4 "Device Not Supported" UserInfo={NSLocalizedDescription=Device Not Supported} #ImageAnalysis

Screenshot

[jplatte]

Hey @fuomag9, AFAIK you're the first to report this but it makes sense that some servers expect a content-length and I can see why it wouldn't be set. Would you be willing to register a test account on your servers and give us the credentials such that we can test a possible fix against the real server where this problem occurs?

[fuomag9]

Hey @fuomag9, AFAIK you're the first to report this but it makes sense that some servers expect a content-lenght and I can see why it wouldn't be set. Would you be willing to register a test account on your servers and give us the credentials such that we can test a possible fix against the real server where this problem occurs?

Sure! Where can I share the credentials securely?

[jplatte]

Hm, Matrix DM should be good enough, right? Happy to delete the account after this is fixed. I'm @jplatte:flipdot.org.

[fuomag9]

Hm, Matrix DM should be good enough, right? Happy to delete the account after this is fixed. I'm @jplatte:flipdot.org.

Account created and DM sent!