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-rw-r--r--docs/libcurl/curl_easy_setopt.32
-rw-r--r--docs/libcurl/opts/CURLOPT_UPLOAD_BUFFERSIZE.369
-rw-r--r--docs/libcurl/opts/Makefile.inc1
-rw-r--r--docs/libcurl/symbols-in-versions1
-rw-r--r--include/curl/curl.h3
-rw-r--r--lib/file.c2
-rw-r--r--lib/setopt.c16
-rw-r--r--lib/smb.c3
-rw-r--r--lib/smtp.c4
-rw-r--r--lib/transfer.c5
-rw-r--r--lib/url.c2
-rw-r--r--lib/url.h12
-rw-r--r--lib/urldata.h12
13 files changed, 115 insertions, 17 deletions
diff --git a/docs/libcurl/curl_easy_setopt.3 b/docs/libcurl/curl_easy_setopt.3
index 32313499c..3685db584 100644
--- a/docs/libcurl/curl_easy_setopt.3
+++ b/docs/libcurl/curl_easy_setopt.3
@@ -421,6 +421,8 @@ Size of file to send. \fICURLOPT_INFILESIZE(3)\fP
Size of file to send. \fICURLOPT_INFILESIZE_LARGE(3)\fP
.IP CURLOPT_UPLOAD
Upload data. See \fICURLOPT_UPLOAD(3)\fP
+.IP CURLOPT_UPLOAD_BUFFERSIZE
+Set upload buffer size. See \fICURLOPT_UPLOAD_BUFFERSIZE(3)\fP
.IP CURLOPT_MIMEPOST
Post/send MIME data. See \fICURLOPT_MIMEPOST(3)\fP
.IP CURLOPT_MAXFILESIZE
diff --git a/docs/libcurl/opts/CURLOPT_UPLOAD_BUFFERSIZE.3 b/docs/libcurl/opts/CURLOPT_UPLOAD_BUFFERSIZE.3
new file mode 100644
index 000000000..c35888cbf
--- /dev/null
+++ b/docs/libcurl/opts/CURLOPT_UPLOAD_BUFFERSIZE.3
@@ -0,0 +1,69 @@
+.\" **************************************************************************
+.\" * _ _ ____ _
+.\" * Project ___| | | | _ \| |
+.\" * / __| | | | |_) | |
+.\" * | (__| |_| | _ <| |___
+.\" * \___|\___/|_| \_\_____|
+.\" *
+.\" * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" *
+.\" * This software is licensed as described in the file COPYING, which
+.\" * you should have received as part of this distribution. The terms
+.\" * are also available at https://curl.haxx.se/docs/copyright.html.
+.\" *
+.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+.\" * copies of the Software, and permit persons to whom the Software is
+.\" * furnished to do so, under the terms of the COPYING file.
+.\" *
+.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+.\" * KIND, either express or implied.
+.\" *
+.\" **************************************************************************
+.\"
+.TH CURLOPT_UPLOAD_BUFFERSIZE 3 "18 Aug 2018" "libcurl 7.62.0" "curl_easy_setopt options"
+.SH NAME
+CURLOPT_UPLOAD_BUFFERSIZE \- set preferred upload buffer size
+.SH SYNOPSIS
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_UPLOAD_BUFFERSIZE, long size);
+.SH DESCRIPTION
+Pass a long specifying your preferred \fIsize\fP (in bytes) for the upload
+buffer in libcurl. It makes libcurl uses a larger buffer that gets passed to
+the next layer in the stack to get sent off. In some setups and for some
+protocols, there's a huge performance benefit of having a larger upload
+buffer.
+
+This is just treated as a request, not an order. You cannot be guaranteed to
+actually get the given size.
+
+The upload buffer size is by default 64 kilobytes. The maximum buffer size
+allowed to be set is 2 megabytes. The minimum buffer size allowed to be set is
+16 kilobytes.
+
+Since curl 7.61.1 the upload buffer is allocated on-demand - so if the handle
+isn't used for upload, this buffer will not be allocated at all.
+.SH DEFAULT
+64 kB
+.SH PROTOCOLS
+All
+.SH EXAMPLE
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "sftp://example.com/foo.bin");
+
+ /* ask libcurl to allocate a larger upload buffer */
+ curl_easy_setopt(curl, CURLOPT_UPLOAD_BUFFERSIZE, 120000L);
+
+ ret = curl_easy_perform(curl);
+
+ curl_easy_cleanup(curl);
+}
+.fi
+.SH AVAILABILITY
+Added in 7.62.0.
+.SH RETURN VALUE
+Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
+.SH "SEE ALSO"
+.BR CURLOPT_BUFFERSIZE "(3), " CURLOPT_READFUNCTION "(3), "
diff --git a/docs/libcurl/opts/Makefile.inc b/docs/libcurl/opts/Makefile.inc
index d65a82073..b7f664a38 100644
--- a/docs/libcurl/opts/Makefile.inc
+++ b/docs/libcurl/opts/Makefile.inc
@@ -327,6 +327,7 @@ man_MANS = \
CURLOPT_UNIX_SOCKET_PATH.3 \
CURLOPT_UNRESTRICTED_AUTH.3 \
CURLOPT_UPLOAD.3 \
+ CURLOPT_UPLOAD_BUFFERSIZE.3 \
CURLOPT_URL.3 \
CURLOPT_USERAGENT.3 \
CURLOPT_USERNAME.3 \
diff --git a/docs/libcurl/symbols-in-versions b/docs/libcurl/symbols-in-versions
index 108c3be32..1515e0616 100644
--- a/docs/libcurl/symbols-in-versions
+++ b/docs/libcurl/symbols-in-versions
@@ -616,6 +616,7 @@ CURLOPT_TRANSFER_ENCODING 7.21.6
CURLOPT_UNIX_SOCKET_PATH 7.40.0
CURLOPT_UNRESTRICTED_AUTH 7.10.4
CURLOPT_UPLOAD 7.1
+CURLOPT_UPLOAD_BUFFERSIZE 7.62.0
CURLOPT_URL 7.1
CURLOPT_USERAGENT 7.1
CURLOPT_USERNAME 7.19.1
diff --git a/include/curl/curl.h b/include/curl/curl.h
index 627cf5446..c19613072 100644
--- a/include/curl/curl.h
+++ b/include/curl/curl.h
@@ -1862,6 +1862,9 @@ typedef enum {
/* DNS-over-HTTPS URL */
CINIT(DOH_URL, STRINGPOINT, 279),
+ /* Preferred buffer size to use for uploads */
+ CINIT(UPLOAD_BUFFERSIZE, LONG, 280),
+
CURLOPT_LASTENTRY /* the last unused */
} CURLoption;
diff --git a/lib/file.c b/lib/file.c
index e50e98876..542f34a45 100644
--- a/lib/file.c
+++ b/lib/file.c
@@ -307,7 +307,7 @@ static CURLcode file_upload(struct connectdata *conn)
size_t nread;
size_t nwrite;
size_t readcount;
- result = Curl_fillreadbuffer(conn, (int)data->set.buffer_size, &readcount);
+ result = Curl_fillreadbuffer(conn, data->set.buffer_size, &readcount);
if(result)
break;
diff --git a/lib/setopt.c b/lib/setopt.c
index 475a33798..4a71f9ae4 100644
--- a/lib/setopt.c
+++ b/lib/setopt.c
@@ -1940,6 +1940,22 @@ CURLcode Curl_vsetopt(struct Curl_easy *data, CURLoption option,
break;
+ case CURLOPT_UPLOAD_BUFFERSIZE:
+ /*
+ * The application kindly asks for a differently sized upload buffer.
+ * Cap it to sensible.
+ */
+ arg = va_arg(param, long);
+
+ if(arg > UPLOADBUFFER_MAX)
+ arg = UPLOADBUFFER_MAX;
+ else if(arg < UPLOADBUFFER_MIN)
+ arg = UPLOADBUFFER_MIN;
+
+ data->set.upload_buffer_size = arg;
+ Curl_safefree(data->state.ulbuf); /* force a realloc next opportunity */
+ break;
+
case CURLOPT_NOSIGNAL:
/*
* The application asks not to set any signal() or alarm() handlers,
diff --git a/lib/smb.c b/lib/smb.c
index e4b18fcf5..e1209e099 100644
--- a/lib/smb.c
+++ b/lib/smb.c
@@ -610,7 +610,8 @@ static CURLcode smb_send_and_recv(struct connectdata *conn, void **msg)
/* Check if there is data in the transfer buffer */
if(!smbc->send_size && smbc->upload_size) {
- size_t nread = smbc->upload_size > UPLOAD_BUFSIZE ? UPLOAD_BUFSIZE :
+ size_t nread = smbc->upload_size > conn->data->set.upload_buffer_size ?
+ conn->data->set.upload_buffer_size :
smbc->upload_size;
conn->data->req.upload_fromhere = conn->data->state.ulbuf;
result = Curl_fillreadbuffer(conn, nread, &nread);
diff --git a/lib/smtp.c b/lib/smtp.c
index ecf10a41a..50c0b3477 100644
--- a/lib/smtp.c
+++ b/lib/smtp.c
@@ -1563,14 +1563,14 @@ CURLcode Curl_smtp_escape_eob(struct connectdata *conn, const ssize_t nread)
if(!scratch || data->set.crlf) {
oldscratch = scratch;
- scratch = newscratch = malloc(2 * UPLOAD_BUFSIZE);
+ scratch = newscratch = malloc(2 * data->set.upload_buffer_size);
if(!newscratch) {
failf(data, "Failed to alloc scratch buffer!");
return CURLE_OUT_OF_MEMORY;
}
}
- DEBUGASSERT(UPLOAD_BUFSIZE >= nread);
+ DEBUGASSERT(data->set.upload_buffer_size >= (size_t)nread);
/* Have we already sent part of the EOB? */
eob_sent = smtp->eob;
diff --git a/lib/transfer.c b/lib/transfer.c
index 7159d5c82..63d01efd9 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -959,7 +959,8 @@ static CURLcode readwrite_upload(struct Curl_easy *data,
sending_http_headers = FALSE;
}
- result = Curl_fillreadbuffer(conn, UPLOAD_BUFSIZE, &fillcount);
+ result = Curl_fillreadbuffer(conn, data->set.upload_buffer_size,
+ &fillcount);
if(result)
return result;
@@ -991,7 +992,7 @@ static CURLcode readwrite_upload(struct Curl_easy *data,
(data->set.crlf))) {
/* Do we need to allocate a scratch buffer? */
if(!data->state.scratch) {
- data->state.scratch = malloc(2 * UPLOAD_BUFSIZE);
+ data->state.scratch = malloc(2 * data->set.upload_buffer_size);
if(!data->state.scratch) {
failf(data, "Failed to alloc scratch buffer!");
diff --git a/lib/url.c b/lib/url.c
index 7ffad19b7..a88ca495e 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -526,7 +526,7 @@ CURLcode Curl_init_userdefined(struct Curl_easy *data)
set->expect_100_timeout = 1000L; /* Wait for a second by default. */
set->sep_headers = TRUE; /* separated header lists by default */
set->buffer_size = READBUFFER_SIZE;
- set->upload_buffer_size = UPLOAD_BUFSIZE;
+ set->upload_buffer_size = UPLOADBUFFER_DEFAULT;
set->happy_eyeballs_timeout = CURL_HET_DEFAULT;
set->fnmatch = ZERO_NULL;
set->maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
diff --git a/lib/url.h b/lib/url.h
index a914f56e6..618309d38 100644
--- a/lib/url.h
+++ b/lib/url.h
@@ -27,6 +27,18 @@
#define READBUFFER_MAX CURL_MAX_READ_SIZE
#define READBUFFER_MIN 1024
+/* The default upload buffer size, should not be smaller than
+ CURL_MAX_WRITE_SIZE, as it needs to hold a full buffer as could be sent in
+ a write callback.
+
+ The size was 16KB for many years but was bumped to 64KB because it makes
+ libcurl able to do significantly faster uploads in some circumstances. Even
+ larger buffers can help further, but this is deemed a fair memory/speed
+ compromise. */
+#define UPLOADBUFFER_DEFAULT 65536
+#define UPLOADBUFFER_MAX (2*1024*1024)
+#define UPLOADBUFFER_MIN CURL_MAX_WRITE_SIZE
+
/*
* Prototypes for library-wide functions provided by url.c
*/
diff --git a/lib/urldata.h b/lib/urldata.h
index 769ab4fa4..d3a174d24 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -142,14 +142,6 @@ typedef ssize_t (Curl_recv)(struct connectdata *conn, /* connection data */
#include <libssh2_sftp.h>
#endif /* HAVE_LIBSSH2_H */
-/* The upload buffer size, should not be smaller than CURL_MAX_WRITE_SIZE, as
- it needs to hold a full buffer as could be sent in a write callback.
-
- The size was 16KB for many years but was bumped to 64KB because it makes
- libcurl able to do significantly faster uploads in some circumstances. Even
- larger buffers can help further, but this is deemed a fair memory/speed
- compromise. */
-#define UPLOAD_BUFSIZE 65536
/* The "master buffer" is for HTTP pipelining */
#define MASTERBUF_SIZE 16384
@@ -1585,8 +1577,8 @@ struct UserDefined {
curl_proxytype proxytype; /* what kind of proxy that is in use */
long dns_cache_timeout; /* DNS cache timeout */
long buffer_size; /* size of receive buffer to use */
- long upload_buffer_size; /* size of upload buffer to use,
- keep it >= CURL_MAX_WRITE_SIZE */
+ size_t upload_buffer_size; /* size of upload buffer to use,
+ keep it >= CURL_MAX_WRITE_SIZE */
void *private_data; /* application-private data */
struct curl_slist *http200aliases; /* linked list of aliases for http200 */
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