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-rw-r--r--docs/libcurl/opts/CURLOPT_SOCKOPTFUNCTION.340
1 files changed, 38 insertions, 2 deletions
diff --git a/docs/libcurl/opts/CURLOPT_SOCKOPTFUNCTION.3 b/docs/libcurl/opts/CURLOPT_SOCKOPTFUNCTION.3
index 6262dc591..c04d8aa33 100644
--- a/docs/libcurl/opts/CURLOPT_SOCKOPTFUNCTION.3
+++ b/docs/libcurl/opts/CURLOPT_SOCKOPTFUNCTION.3
@@ -5,7 +5,7 @@
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
@@ -78,7 +78,43 @@ By default, this callback is NULL and unused.
.SH PROTOCOLS
All
.SH EXAMPLE
-TODO
+.nf
+/* make libcurl use the already established socket 'sockfd' */
+
+static curl_socket_t opensocket(void *clientp,
+ curlsocktype purpose,
+ struct curl_sockaddr *address)
+{
+ curl_socket_t sockfd;
+ sockfd = *(curl_socket_t *)clientp;
+ /* the actual externally set socket is passed in via the OPENSOCKETDATA
+ option */
+ return sockfd;
+}
+
+static int sockopt_callback(void *clientp, curl_socket_t curlfd,
+ curlsocktype purpose)
+{
+ /* This return code was added in libcurl 7.21.5 */
+ return CURL_SOCKOPT_ALREADY_CONNECTED;
+}
+
+curl = curl_easy_init();
+if(curl) {
+ /* libcurl will internally think that you connect to the host
+ * and port that you specify in the URL option. */
+ curl_easy_setopt(curl, CURLOPT_URL, "http://99.99.99.99:9999");
+ /* call this function to get a socket */
+ curl_easy_setopt(curl, CURLOPT_OPENSOCKETFUNCTION, opensocket);
+ curl_easy_setopt(curl, CURLOPT_OPENSOCKETDATA, &sockfd);
+
+ /* call this function to set options for the socket */
+ curl_easy_setopt(curl, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
+
+ res = curl_easy_perform(curl);
+
+ curl_easy_cleanup(curl);
+.fi
.SH AVAILABILITY
Added in 7.16.0. The \fICURL_SOCKOPT_ALREADY_CONNECTED\fP return code was
added in 7.21.5.