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+.\" **************************************************************************
+.\" *                                  _   _ ____  _
+.\" *  Project                     ___| | | |  _ \| |
+.\" *                             / __| | | | |_) | |
+.\" *                            | (__| |_| |  _ <| |___
+.\" *                             \___|\___/|_| \_\_____|
+.\" *
+.\" * 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
+.\" * are also available at https://curl.haxx.se/docs/copyright.html.
+.\" *
+.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+.\" * copies of the Software, and permit persons to whom the Software is
+.\" * furnished to do so, under the terms of the COPYING file.
+.\" *
+.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+.\" * KIND, either express or implied.
+.\" *
+.\" **************************************************************************
+.\"
+.TH CURLOPT_PROXYHEADER 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
+.SH NAME
+CURLOPT_PROXYHEADER \- custom HTTP headers to pass to proxy
+.SH SYNOPSIS
+.nf
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXYHEADER,
+                          struct curl_slist *headers);
+.SH DESCRIPTION
+Pass a pointer to a linked list of HTTP headers to pass in your HTTP request
+sent to a proxy. The rules for this list is identical to the
+\fICURLOPT_HTTPHEADER(3)\fP option's.
+
+The headers set with this option is only ever used in requests sent to a proxy
+- when there's also a request sent to a host.
+
+The first line in a request (containing the method, usually a GET or POST) is
+NOT a header and cannot be replaced using this option. Only the lines
+following the request-line are headers. Adding this method line in this list
+of headers will only cause your request to send an invalid header.
+
+Pass a NULL to this to reset back to no custom headers.
+.SH DEFAULT
+NULL
+.SH PROTOCOLS
+HTTP
+.SH EXAMPLE
+.nf
+CURL *curl = curl_easy_init();
+
+struct curl_slist *list;
+
+if(curl) {
+  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+  curl_easy_setopt(curl, CURLOPT_PROXY, "http://proxy.example.com:80");
+
+  list = curl_slist_append(NULL, "Shoesize: 10");
+  list = curl_slist_append(list, "Accept:");
+
+  curl_easy_setopt(curl, CURLOPT_PROXYHEADER, list);
+
+  curl_easy_perform(curl);
+
+  curl_slist_free_all(list); /* free the list again */
+}
+.fi
+.SH AVAILABILITY
+Added in 7.37.0
+.SH RETURN VALUE
+Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
+.SH "SEE ALSO"
+.BR CURLOPT_HEADEROPT "(3), " CURLOPT_HTTPHEADER "(3), "