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curl.h: allow up to 10M buffer size

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Bump the limit from 512K. There might be reasons for applications using
h3 to set larger buffers and there is no strong reason for curl to have
a very small maximum.

Ref: https://curl.se/mail/lib-2023-01/0026.html

Closes #10256
This commit is contained in:
Daniel Stenberg 2023-01-07 16:03:40 +01:00
parent 3022eeaefe
commit 5cb63da771
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2 changed files with 4 additions and 2 deletions
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4
docs/libcurl/opts/CURLOPT_BUFFERSIZE.3
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@ -41,11 +41,13 @@ This is just treated as a request, not an order. You cannot be guaranteed to
actually get the given size.
This buffer size is by default \fICURL_MAX_WRITE_SIZE\fP (16kB). The maximum
buffer size allowed to be set is \fICURL_MAX_READ_SIZE\fP (512kB). The minimum
buffer size allowed to be set is \fICURL_MAX_READ_SIZE\fP (10MB). The minimum
buffer size allowed to be set is 1024.
DO NOT set this option on a handle that is currently used for an active
transfer as that may lead to unintended consequences.
The maximum size was 512kB until 7.88.0.
.SH DEFAULT
CURL_MAX_WRITE_SIZE (16kB)
.SH PROTOCOLS

2
include/curl/curl.h
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@ -248,7 +248,7 @@ typedef int (*curl_xferinfo_callback)(void *clientp,
#ifndef CURL_MAX_READ_SIZE
/* The maximum receive buffer size configurable via CURLOPT_BUFFERSIZE. */
#define CURL_MAX_READ_SIZE 524288
#define CURL_MAX_READ_SIZE (10*1024*1024)
#endif
#ifndef CURL_MAX_WRITE_SIZE