CURLOPT_PROXY_SSLKEY_BLOB - private key for proxy cert from memory blob
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_SSLKEY_BLOB,
struct curl_blob *blob);
Pass a pointer to a curl_blob structure that contains information (pointer and
size) about the private key for connecting to the HTTPS proxy. Compatible with
OpenSSL. The format (like "PEM") must be specified with
If the blob is initialized with the flags member of struct
curl_blob set to CURL_BLOB_COPY, the application does not have to keep the
buffer around after setting this.
All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
CURL *curl = curl_easy_init();
struct curl_blob blob;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
curl_easy_setopt(curl, CURLOPT_PROXY, "https://proxy");
blob.data = certificateData;
blob.len = filesize;
blob.flags = CURL_BLOB_COPY;
curl_easy_setopt(curl, CURLOPT_PROXY_SSLCERT_BLOB, &blob);
curl_easy_setopt(curl, CURLOPT_PROXY_SSLCERTTYPE, "PEM");
blob.data = privateKeyData;
blob.len = privateKeySize;
curl_easy_setopt(curl, CURLOPT_PROXY_SSLKEY_BLOB, &blob);
curl_easy_setopt(curl, CURLOPT_PROXY_KEYPASSWD, "s3cret");
ret = curl_easy_perform(curl);
Added in libcurl 7.71.0. This option is supported by the OpenSSL backends.
Returns CURLE_OK if TLS enabled, CURLE_UNKNOWN_OPTION if not, or
CURLE_OUT_OF_MEMORY if there was insufficient heap space.