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 +1,78 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLINFO_EARLYDATA_SENT_T
+Section: 3
+Source: libcurl
+See-also:
+  - curl_easy_getinfo (3)
+  - curl_easy_setopt (3)
+Protocol:
+  - TLS
+TLS-backend:
+  - GnuTLS
+Added-in: 8.11.0
+---
+
+# NAME
+
+CURLINFO_EARLYDATA_SENT_T - get the number of bytes sent as TLS early data
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_EARLYDATA_SENT_T,
+                           curl_off_t *amount);
+~~~
+
+# DESCRIPTION
+
+Pass a pointer to an *curl_off_t* to receive the total amount of bytes that
+were sent to the server as TLSv1.3 early data. When no TLS early
+data is used, this reports 0.
+
+TLS early data is only attempted when CURLSSLOPT_EARLYDATA is set for the
+transfer. In addition, it is only used by libcurl when a TLS session exists
+that announces support.
+
+The amount is **negative** when the sent data was rejected
+by the server. TLS allows a server that announces support for early data to
+reject any attempt to use it at its own discretion. When for example 127
+bytes had been sent, but were rejected, it reports -127 as the amount "sent".
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    CURLcode res;
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+
+    /* Perform the request */
+    res = curl_easy_perform(curl);
+
+    if(!res) {
+      curl_off_t amount;
+      res = curl_easy_getinfo(curl, CURLINFO_EARLYDATA_SENT_T, &amount);
+      if(!res) {
+        printf("TLS earlydata: %" CURL_FORMAT_CURL_OFF_T " bytes\n", amount);
+      }
+    }
+  }
+}
+~~~
+
+# %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).