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 +1,90 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_IPRESOLVE
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_HTTP_VERSION (3)
+  - CURLOPT_RESOLVE (3)
+  - CURLOPT_SSLVERSION (3)
+Protocol:
+  - All
+Added-in: 7.10.8
+---
+
+# NAME
+
+CURLOPT_IPRESOLVE - IP protocol version to use
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IPRESOLVE, long resolve);
+~~~
+
+# DESCRIPTION
+
+Allows an application to select what kind of IP addresses to use when
+establishing a connection or choosing one from the connection pool. This is
+interesting when using hostnames that resolve to more than one IP family.
+
+If the URL provided for a transfer contains a numerical IP version as a host
+name, this option does not override or prohibit libcurl from using that IP
+version.
+
+Available values for this option are:
+
+## CURL_IPRESOLVE_WHATEVER
+
+Default, can use addresses of all IP versions that your system allows.
+
+## CURL_IPRESOLVE_V4
+
+Uses only IPv4 addresses.
+
+## CURL_IPRESOLVE_V6
+
+Uses only IPv6 addresses.
+
+# DEFAULT
+
+CURL_IPRESOLVE_WHATEVER
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    CURLcode res;
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
+
+    /* of all addresses example.com resolves to, only IPv6 ones are used */
+    curl_easy_setopt(curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V6);
+
+    res = curl_easy_perform(curl);
+
+    curl_easy_cleanup(curl);
+  }
+}
+~~~
+
+# HISTORY
+
+**CURL_IPRESOLVE_*** macros became `long` types in 8.15.0, before this version
+a `long` cast was necessary when passed to curl_easy_setopt(3).
+
+# %AVAILABILITY%
+
+# RETURN VALUE
+
+curl_easy_setopt(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).