Merge branch 'vp/http-rate-limit-retries'

The HTTP transport learned to react to "429 Too Many Requests".

* vp/http-rate-limit-retries:
  http: add support for HTTP 429 rate limit retries
  strbuf_attach: fix call sites to pass correct alloc
  strbuf: pass correct alloc to strbuf_attach() in strbuf_reencode()

1 files changed, 26 insertions, 0 deletions

diff --git a/Documentation/config/http.adoc b/Documentation/config/http.adoc
index 9da5c298cc..849c89f36c 100644
--- a/Documentation/config/http.adoc
+++ b/Documentation/config/http.adoc
@@ -315,6 +315,32 @@ http.keepAliveCount::
 	unset, curl's default value is used. Can be overridden by the
 	`GIT_HTTP_KEEPALIVE_COUNT` environment variable.
 
+http.retryAfter::
+	Default wait time in seconds before retrying when a server returns
+	HTTP 429 (Too Many Requests) without a Retry-After header.
+	Defaults to 0 (retry immediately). When a Retry-After header is
+	present, its value takes precedence over this setting; however,
+	automatic use of the server-provided `Retry-After` header requires
+	libcurl 7.66.0 or later. On older versions, configure this setting
+	manually to control the retry delay. Can be overridden by the
+	`GIT_HTTP_RETRY_AFTER` environment variable.
+	See also `http.maxRetries` and `http.maxRetryTime`.
+
+http.maxRetries::
+	Maximum number of times to retry after receiving HTTP 429 (Too Many
+	Requests) responses. Set to 0 (the default) to disable retries.
+	Can be overridden by the `GIT_HTTP_MAX_RETRIES` environment variable.
+	See also `http.retryAfter` and `http.maxRetryTime`.
+
+http.maxRetryTime::
+	Maximum time in seconds to wait for a single retry attempt when
+	handling HTTP 429 (Too Many Requests) responses. If the server
+	requests a delay (via Retry-After header) or if `http.retryAfter`
+	is configured with a value that exceeds this maximum, Git will fail
+	immediately rather than waiting. Default is 300 seconds (5 minutes).
+	Can be overridden by the `GIT_HTTP_MAX_RETRY_TIME` environment
+	variable. See also `http.retryAfter` and `http.maxRetries`.
+
 http.noEPSV::
 	A boolean which disables using of EPSV ftp command by curl.
 	This can be helpful with some "poor" ftp servers which don't