Dear all, I am kindly requesting your very appreciated help with a strange problem in curl 8.7.1-7!
CURL.EXE: Using curl.exe I am able to PUT a short 2-byte string (actually just []) to a HTTPS/2 server successfully: * [HTTP/2] [1] OPENED stream for https://…:8080/api/labels/keys/… * [HTTP/2] [1] [:method: PUT] * [HTTP/2] [1] [:scheme: https] * [HTTP/2] [1] [:authority: …:8080] * [HTTP/2] [1] [:path: /api/labels/keys/…] * [HTTP/2] [1] [user-agent: curl/8.7.1] * [HTTP/2] [1] [accept: */*] * [HTTP/2] [1] [accept-encoding: deflate, gzip, br, zstd] * [HTTP/2] [1] [authorization: Bearer …] * [HTTP/2] [1] [content-type: application/json] * [HTTP/2] [1] [content-length: 2] > PUT /api/labels/keys/… HTTP/2 > Host: …:8080 > User-Agent: curl/8.7.1 > Accept: */* > Authorization: Bearer … > Content-Type: application/json > Content-Length: 2 > * upload completely sent off: 2 bytes < HTTP/2 204 (Note that curl.exe created the content-length header on its own!) LIBCURL.DLL: Sending the exact same PUT using libcurl.dll (using the read function printed below), the process runs into a configured 5s timeout (removing the timeout option actually hangs endless): [HTTP/2] [1] OPENED stream for https://…:8080/api/labels/keys/… [HTTP/2] [1] [:method: PUT] [HTTP/2] [1] [:scheme: https] [HTTP/2] [1] [:authority: …:8080] [HTTP/2] [1] [:path: /api/labels/keys/…] [HTTP/2] [1] [accept: */*] [HTTP/2] [1] [accept-encoding: deflate, gzip, br, zstd] [HTTP/2] [1] [authorization: Bearer …] [HTTP/2] [1] [content-type: application/json] Operation timed out after 5005 milliseconds with 0 out of 0 bytes received (Note that lubcurl.dll didn’t create a content-length header on its own!) static size_t onSendRequestChunk(char* ptr, size_t size, size_t nitems, std::string* userdata) { size_t bytesToSend = min(userdata->size(), size * nitems); memcpy(ptr, userdata->data(), bytesToSend); return bytesToSend; } SERVER: Actually in BOTH cases (curl.exe AND libcurl.dll) the server’s log tells me that the server HAS RECEIVED the data (I can see the string [] in the log!), processed it successfully, and answered with 204! I wonder what I am doing wrong? Any help ist highly appreciated! If needed, I can send the complete source code, just tell me! 😊 -Markus
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