Server doesn't return any data.

[Zit-Zitoun]

Hi everyone.

My martin server keeps returning 204 HTTP code when I try to test it with QGIS, meaning that there is no data sent from the server. I used the "mbtiles validate *path*" command to verify my data integrity and it's OK (I downloaded it from Geofabrik and converted it to MBTiles format with tilemaker).

I also tried to download the data using wget http://0.0.0.0:3000/Luxembourg/{z}/{x}/{y} without success. (Screen of this below)

But when I use MBTiles files containing raster tiles (png), it works perfectly fine and returns png data, which is extremely confusing as I thought that Martin was able to serve only vector data.

I would really appreciate someone explaining:
-Why is Martin able to return PNG data
-Why is Martin returning 204 code and not sending data when I use it with vector MBTiles files.

Thank you!

[sharkAndshark]

Hi @Zit-Zitoun Have a good day!

Why is Martin able to return PNG data

Martin just return the tile data stored in MBTIles, and MBTiles could store PNG data based on the spec: The tile_data column MUST contain the raw binary image or vector tile data for the associated tile as a blob

Why is Martin returning 204 code and not sending data when I use it with vector MBTiles files.

• Maybe there is no tile in 11/48/54?
• What's your tile-grid?
• Have you view it on QGIS?

And would you mind share this file? I'd love to debug it.

PS. You could inspect the MBTiles file with tools like DBeaver, Navicat, etc. They are sqlite file generally.

[Zit-Zitoun]

Hi @sharkAndshark
Thank you very much for your quick answer!

I figured out that I was not using QGIS properly, which made me think that the server wasn't functionnal ( I spent a whole day trying to "fix" my server 😅). The database was also fine.

Sorry for the inconvenience about such a silly mistake and thank you again!

PS: I couldn't share the file because it was too big! Even with compression.