diff options
| author | Daniel Jelinski <daniel.jelinski@thomsonreuters.com> | 2018-07-19 14:07:59 +0200 |
|---|---|---|
| committer | Daniel Stenberg <daniel@haxx.se> | 2018-08-08 13:38:50 +0200 |
| commit | 1ba1dba76a8898d1de4dfbc9f1910a352d8a9dab (patch) | |
| tree | 1feb3c520ccbbf1b5a36b38595f57bd61507544b /lib | |
| parent | 298d2565e2a2f06a859b7f5a1cc24ba7c87a8ce2 (diff) | |
windows: implement send buffer tuning
Significantly enhances upload performance on modern Windows versions.
Bug: https://curl.haxx.se/mail/lib-2018-07/0080.html
Closes #2762
Fixes #2224
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/transfer.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/lib/transfer.c b/lib/transfer.c index 43f567c4f..1d33e861a 100644 --- a/lib/transfer.c +++ b/lib/transfer.c @@ -869,6 +869,22 @@ static CURLcode done_sending(struct connectdata *conn, return CURLE_OK; } +#if defined(WIN32) && defined(SIO_IDEAL_SEND_BACKLOG_QUERY) +static void win_update_buffer_size(curl_socket_t sockfd) +{ + int result; + ULONG ideal; + DWORD ideallen; + result = WSAIoctl(sockfd, SIO_IDEAL_SEND_BACKLOG_QUERY, 0, 0, + &ideal, sizeof(ideal), &ideallen, 0, 0); + if(result == 0) { + setsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, + (const char *)&ideal, sizeof(ideal)); + } +} +#else +#define win_update_buffer_size(x) +#endif /* * Send data to upload to the server, when the socket is writable. @@ -1020,10 +1036,11 @@ static CURLcode readwrite_upload(struct Curl_easy *data, k->upload_fromhere, /* buffer pointer */ k->upload_present, /* buffer size */ &bytes_written); /* actually sent */ - if(result) return result; + win_update_buffer_size(conn->writesockfd); + if(data->set.verbose) /* show the data before we change the pointer upload_fromhere */ Curl_debug(data, CURLINFO_DATA_OUT, k->upload_fromhere, |