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pingpong: cleanup timeleft handling

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- Move `RESP_TIMEOUT` from urldata.h to pingpong.h as
  `PINGPONG_TIMEOUT_MS`.
- Rename `Curl_pp_state_timeout()` to `Curl_pp_state_timeleft_ms()` as
  the function returns the time left, not the timout..
- Update implementation comments and variable names

Closes #20888
This commit is contained in:
Stefan Eissing 2026-03-11 14:43:14 +01:00 committed by Daniel Stenberg
parent da7bfb89a1
commit f14ce01369
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GPG Key ID: 5CC908FDB71E12C2
4 changed files with 23 additions and 30 deletions
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2
lib/ftp.c
View File

@ -657,7 +657,7 @@ static CURLcode getftpresponse(struct Curl_easy *data,
while(!*ftpcodep && !result) {
/* check and reset timeout value every lap */
timediff_t timeout = Curl_pp_state_timeout(data, pp);
timediff_t timeout = Curl_pp_state_timeleft_ms(data, pp);
timediff_t interval_ms;
if(timeout <= 0) {

36
lib/pingpong.c
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@ -39,29 +39,21 @@
#include "select.h"
#include "progress.h"
/* Returns timeout in ms. 0 or negative number means the timeout has already
triggered */
timediff_t Curl_pp_state_timeout(struct Curl_easy *data,
struct pingpong *pp)
timediff_t Curl_pp_state_timeleft_ms(struct Curl_easy *data,
struct pingpong *pp)
{
timediff_t timeout_ms, xfer_timeout_ms;
timediff_t response_time = data->set.server_response_timeout ?
data->set.server_response_timeout : RESP_TIMEOUT;
timediff_t xfer_remain_ms;
timediff_t remain_ms = data->set.server_response_timeout ?
data->set.server_response_timeout : PINGPONG_TIMEOUT_MS;
/* if CURLOPT_SERVER_RESPONSE_TIMEOUT is set, use that to determine
remaining time, or use pp->response because SERVER_RESPONSE_TIMEOUT is
supposed to govern the response for any given server response, not for
the time from connect to the given server response. */
/* Without a requested timeout, we only wait 'response_time' seconds for the
full response to arrive before we bail out */
timeout_ms = response_time -
curlx_ptimediff_ms(Curl_pgrs_now(data), &pp->response);
/* transfer timeout can be 0, which means no timeout applies */
xfer_timeout_ms = Curl_timeleft_ms(data);
if(xfer_timeout_ms && (xfer_timeout_ms < timeout_ms))
return xfer_timeout_ms;
return timeout_ms;
/* If the overall transfer has less time remaining than pingpong
* has otherwise for the state, return that. */
remain_ms -= curlx_ptimediff_ms(Curl_pgrs_now(data), &pp->response);
/* transfer remaining time is 0, when it has no timeout. */
xfer_remain_ms = Curl_timeleft_ms(data);
if(xfer_remain_ms)
return CURLMIN(remain_ms, xfer_remain_ms);
return remain_ms;
}
/*
@ -75,7 +67,7 @@ CURLcode Curl_pp_statemach(struct Curl_easy *data,
curl_socket_t sock = conn->sock[FIRSTSOCKET];
int rc;
timediff_t interval_ms;
timediff_t timeout_ms = Curl_pp_state_timeout(data, pp);
timediff_t timeout_ms = Curl_pp_state_timeleft_ms(data, pp);
CURLcode result = CURLE_OK;
if(timeout_ms <= 0) {

12
lib/pingpong.h
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@ -70,6 +70,10 @@ struct pingpong {
read */
};
/* Default pingpong response timeout in milliseconds, unless a transfer
* has CURLOPT_SERVER_RESPONSE_TIMEOUT(_MS) set. */
#define PINGPONG_TIMEOUT_MS (60 * 1000)
#define PINGPONG_SETUP(pp, s, e) \
do { \
(pp)->statemachine = s; \
@ -88,10 +92,10 @@ CURLcode Curl_pp_statemach(struct Curl_easy *data, struct pingpong *pp,
/* initialize stuff to prepare for reading a fresh new response */
void Curl_pp_init(struct pingpong *pp, const struct curltime *pnow);
/* Returns timeout in ms. 0 or negative number means the timeout has already
triggered */
timediff_t Curl_pp_state_timeout(struct Curl_easy *data,
struct pingpong *pp);
/* Returns time remaining in ms. 0 or negative number means the
timeout has already triggered */
timediff_t Curl_pp_state_timeleft_ms(struct Curl_easy *data,
struct pingpong *pp);
/***********************************************************************
*

3
lib/urldata.h
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@ -120,9 +120,6 @@ typedef curl_off_t curl_prot_t;
/* length of longest IPv6 address string including the trailing null */
#define MAX_IPADR_LEN sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")
/* Default FTP/IMAP etc response timeout in milliseconds */
#define RESP_TIMEOUT (60 * 1000)
/* Max string input length is a precaution against abuse and to detect junk
input easier and better. */
#define CURL_MAX_INPUT_LENGTH 8000000