Hi, I'm trying to figure out why I get so many calls to my write callback. This is against a HTTP/1.1 server and with strace I can see that curl receives the whole reply in one single recv (which is translated to a recvfrom by libc) but for some reason my write callback is called 9 times at what is suspiciously close to on each newline but then comes a larger chunk with many newlines at once.
Looking at the code in libcurl it looks like curl should simply chunk the data into CURL_MAX_WRITE_SIZE sized chunks so I'm a bit confused on what is happening here. FYI this is plain HTTP and not HTTPS. recvfrom(8, "HTTP/1.1 200 OK\r\nServer: Restlet"..., 16384, 0, NULL, NULL) = 562 write_callback= '<?xml version="1.0" encoding="utf-8"?>' = 38 write_callback= '<content>' = 9 write_callback= '\n<user>millistream</user>' = 25 write_callback= '\n<most-recent-change/>' = 22 write_callback= '\n<channels>' = 11 write_callback= '\n<channel>' = 10 write_callback= '\n<name>product-ALLAGSPRO</name>' = 31 write_callback= '\n<items/>\n</channel>\n</channels>\n</content>' = 43 write_callback= '\n' = 1 The expected behaviour would be to get called once with realsize=190. As you can see above recvfrom returns with 562 bytes and then I get 9 calls to write_callback from that, so the chunking is not due to the network transfer but happens inside curl. Due to the varying sizes this is not due to hitting some buffer limit (or we would not trigger on 9 after 38) either. The output here is " write_callback='%.*s' = %lu\n", (int)realsize, ptr, realsize);" I have not changed any of the buffer sizes and this is with libcurl 7.68 /HH
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