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IDProjectCategoryView StatusDate SubmittedLast Update
0011128Talermerchant backendpublic2026-02-21 02:142026-02-21 02:14
ReporterWindfisch Assigned To 
PrioritynormalSeverityminorReproducibilityhave not tried
Status newResolutionopen 
Product Version1.4 
Summary0011128: Binary garbage on PATCH /instances/foo/private with *_delay==0
DescriptionWhen PATCHing a /instances/foo/private endpoint with either default_{pay,refund,wire_transfer}_delay set to 0, the HTTP request returns binary garbage. The response seems to be the desired (error) response, but zlib-compressed. Apparently some response header is not set which indicates to curl that the response is actually compressed, so curl won't uncompress it.

tested with v1.4.1-dev.1
Steps To ReproduceCreate a "stonks2" merchant instance.

Update the settings once, capture the PATCH request in the browser and "copy as cURL", which yields something similar to below:

WIRE=0; PAY=60; REFUND=60; curl 'https://backend.w.icmp.camp/instances/stonks2/private' -X PATCH -H 'Accept-Encoding: gzip, deflate, br, zstd' -H 'Content-Type: application/json' -H 'Authorization: Bearer secret-token:REDACTED' --data-raw '{"default_pay_delay":{"d_us":'$PAY'000000},"default_refund_delay":{"d_us":'$REFUND'000000},"default_wire_transfer_delay":{"d_us":'$WIRE'000000},"use_stefan":false,"name":"stonks2","email_validated":false,"phone_validated":false,"merchant_pub":"GE04TYN95S5CWNBBN3GWK3W2SM0WKRBSQ6X3A4MPT4KQ02JD4A40","address":{},"jurisdiction":{},"default_wire_transfer_rounding_interval":"NONE","auth":{"method":"token"}}' ; echo
results in binary garbage. when piped through `file -`, file reports "zlib compressed data"


WIRE=0; PAY=60; REFUND=60; curl 'https://backend.w.icmp.camp/instances/stonks2/private' -X PATCH -H 'Accept-Encoding: gzip, deflate, br, zstd' -H 'Content-Type: application/json' -H 'Authorization: Bearer secret-token:EYADCF1E372W34G3CZ36EQJNPTPQA7PM9AQX8V6B7W8CXVENT8ZG' --data-raw '{"default_pay_delay":{"d_us":'$PAY'000000},"default_refund_delay":{"d_us":'$REFUND'000000},"default_wire_transfer_delay":{"d_us":'$WIRE'000000},"use_stefan":false,"name":"stonks2","email_validated":false,"phone_validated":false,"merchant_pub":"GE04TYN95S5CWNBBN3GWK3W2SM0WKRBSQ6X3A4MPT4KQ02JD4A40","address":{},"jurisdiction":{},"default_wire_transfer_rounding_interval":"NONE","auth":{"method":"token"}}' | zlib-flate -uncompress
  % Total % Received % Xferd Average Speed Time Time Time Current
                                 Dload Upload Total Spent Left Speed
100 557 100 170 100 387 1303 2968 --:--:-- --:--:-- --:--:-- 4284
{
  "code": 22,
  "hint": "The JSON in the client's request was malformed. This is likely a bug in the client implementation. Check if you are using the latest available version and/or file a report with the developers."
}

Note how the binary data actually uncompresses to a reasonable JSON response.

The problem does not occur when removing the Accept-Encoding header.
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Date Modified Username Field Change
2026-02-21 02:14 Windfisch New Issue