Update networking layer w/ CURL and emscripten impl

2025-11-08 01:50:36 +11:00
parent a17925904d
commit f6874dc55a
4105 changed files with 694617 additions and 179 deletions
@@ -0,0 +1,77 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLINFO_PRETRANSFER_TIME_T
+Section: 3
+Source: libcurl
+See-also:
+  - CURLINFO_CONNECT_TIME (3)
+  - CURLINFO_PRETRANSFER_TIME_T (3)
+  - curl_easy_getinfo (3)
+  - curl_easy_setopt (3)
+Protocol:
+  - All
+Added-in: 7.61.0
+---
+
+# NAME
+
+CURLINFO_PRETRANSFER_TIME_T - get the time until the file transfer start
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PRETRANSFER_TIME_T,
+                           curl_off_t *timep);
+~~~
+
+# DESCRIPTION
+
+Pass a pointer to a curl_off_t to receive the time, in microseconds, it took
+from the start until the file transfer is just about to begin.
+
+This time-stamp includes all pre-transfer commands and negotiations that are
+specific to the particular protocol(s) involved. It includes the sending of
+the protocol-specific instructions that trigger a transfer.
+
+When a redirect is followed, the time from each request is added together.
+
+See also the TIMES overview in the curl_easy_getinfo(3) man page.
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    CURLcode res;
+    curl_off_t pretransfer;
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
+    res = curl_easy_perform(curl);
+    if(CURLE_OK == res) {
+      res = curl_easy_getinfo(curl, CURLINFO_PRETRANSFER_TIME_T, &pretransfer);
+      if(CURLE_OK == res) {
+        printf("Time: %" CURL_FORMAT_CURL_OFF_T ".%06ld\n",
+               pretransfer / 1000000,
+               (long)(pretransfer % 1000000));
+      }
+    }
+    /* always cleanup */
+    curl_easy_cleanup(curl);
+  }
+}
+~~~
+
+# %AVAILABILITY%
+
+# RETURN VALUE
+
+curl_easy_getinfo(3) returns a CURLcode indicating success or error.
+
+CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
+libcurl-errors(3).