From f1b8566ea28d1256cf533f5fe07a6662041a6c5d Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Tue, 3 Oct 2000 11:02:52 +0000
Subject: [PATCH] new upload-buffer size design that starts with a smallish
buffer and increases its size in case of need
---
lib/highlevel.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/lib/highlevel.c b/lib/highlevel.c
index f0a6a6810d..c3b6269e12 100644
--- a/lib/highlevel.c
+++ b/lib/highlevel.c
@@ -112,6 +112,10 @@
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
+#ifndef min
+#define min(a, b) ((a) < (b) ? (a) : (b))
+#endif
+
CURLcode
_Transfer(struct connectdata *c_conn)
{
@@ -522,7 +526,7 @@ _Transfer(struct connectdata *c_conn)
if(data->crlf)
buf = data->buffer; /* put it back on the buffer */
- nread = data->fread(buf, 1, BUFSIZE, data->in);
+ nread = data->fread(buf, 1, conn->upload_bufsize, data->in);
/* the signed int typecase of nread of for systems that has
unsigned size_t */
@@ -570,6 +574,15 @@ _Transfer(struct connectdata *c_conn)
if (urg)
return urg;
+ if(data->progress.ulspeed > conn->upload_bufsize) {
+ /* If we're transfering more data per second than fits in our buffer,
+ we increase the buffer size to adjust to the current
+ speed. However, we must not set it larger than BUFSIZE. We don't
+ adjust it downwards again since we don't see any point in that!
+ */
+ conn->upload_bufsize=(long)min(data->progress.ulspeed, BUFSIZE);
+ }
+
if (data->timeout && (tvdiff (now, start) > data->timeout)) {
failf (data, "Operation timed out with %d out of %d bytes received",
bytecount, conn->size);
--
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