I think I found a bug in the cURL library.
I run it with Windows 10.

In this case  I can connect:

#define ZOTERO_PWP_URL "http://127.0.0.1:23116"     //
scheme://host:port/path
curl_global_init(CURL_GLOBAL_ALL);
curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL,             (char*) ZOTERO_PWP_URL);
curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY,    1);
curl_easy_perform(curl);

But I can't connect, in this way:

#define ZOTERO_PWP_URL "http://127.0.0.1"        // scheme://host:port/path
#define ZOTERO_PWP_PORT                23116
curl_global_init(CURL_GLOBAL_ALL);
curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL,             (char*) ZOTERO_PWP_URL);
curl_easy_setopt(curl, CURLOPT_LOCALPORT,        (long) ZOTERO_PWP_PORT);
curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY,    1);
curl_easy_perform(curl);

The call below doesn't work.
curl_easy_setopt(curl, CURLOPT_LOCALPORT,        (long) ZOTERO_PWP_PORT);

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Received on 2019-01-31