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 +1,75 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLINFO_LOCAL_IP
+Section: 3
+Source: libcurl
+See-also:
+  - CURLINFO_LOCAL_PORT (3)
+  - CURLINFO_PRIMARY_IP (3)
+  - curl_easy_getinfo (3)
+  - curl_easy_setopt (3)
+Protocol:
+  - TCP
+  - QUIC
+Added-in: 7.21.0
+---
+
+# NAME
+
+CURLINFO_LOCAL_IP - get local IP address of last connection
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_LOCAL_IP, char **ip);
+~~~
+
+# DESCRIPTION
+
+Pass a pointer to a char pointer to receive the pointer to a null-terminated
+string holding the IP address of the local end of most recent connection done
+with this **curl** handle. This string may be IPv6 when that is enabled. Note
+that you get a pointer to a memory area that is reused at next request so you
+need to copy the string if you want to keep the information.
+
+The **ip** pointer is NULL or points to private memory. You **must not** free
+it. The memory gets freed automatically when you call curl_easy_cleanup(3) on
+the corresponding curl handle.
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  char *ip;
+  CURLcode res;
+  CURL *curl = curl_easy_init();
+
+  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+
+  /* Perform the transfer */
+  res = curl_easy_perform(curl);
+  /* Check for errors */
+  if((res == CURLE_OK) &&
+     !curl_easy_getinfo(curl, CURLINFO_LOCAL_IP, &ip) && ip) {
+    printf("Local IP: %s\n", ip);
+  }
+
+  /* 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).