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upkeep: add a connection upkeep API: curl_easy_conn_upkeep()

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Add functionality so that protocols can do custom keepalive on their
connections, when an external API function is called.

Add docs for the new options in 7.62.0

Closes #1641
This commit is contained in:
Max Dymond 2018-04-18 16:40:17 +01:00 • committed by Daniel Stenberg
parent 6684653b68
commit 7b655fcbad
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15 changed files with 280 additions and 2 deletions
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6
include/curl/curl.h
View file

@ -803,6 +803,9 @@ typedef enum {
this value, keep them in sync. */
#define CURL_HET_DEFAULT 200L
/* The default connection upkeep interval in milliseconds. */
#define CURL_UPKEEP_INTERVAL_DEFAULT 60000L
#ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
the obsolete stuff removed! */
@ -1865,6 +1868,9 @@ typedef enum {
/* Preferred buffer size to use for uploads */
CINIT(UPLOAD_BUFFERSIZE, LONG, 280),
/* Time in ms between connection upkeep calls for long-lived connections. */
CINIT(CONN_UPKEEP_INTERVAL_MS, LONG, 281),
CURLOPT_LASTENTRY /* the last unused */
} CURLoption;

10
include/curl/easy.h
View file

@ -95,6 +95,16 @@ CURL_EXTERN CURLcode curl_easy_recv(CURL *curl, void *buffer, size_t buflen,
CURL_EXTERN CURLcode curl_easy_send(CURL *curl, const void *buffer,
size_t buflen, size_t *n);
/*
* NAME curl_easy_conn_upkeep()
*
* DESCRIPTION
*
* Performs connection upkeep for the given session handle.
*/
CURL_EXTERN CURLcode curl_easy_conn_upkeep(CURL *curl);
#ifdef __cplusplus
}
#endif