use option interface with Curl to select the source IP addr or Curl (when the...

use option interface with Curl to select the source IP addr or Curl (when the NF has multiple interfaces)

src/smf_app/smf_n10.cpp

@@ -136,6 +136,7 @@ bool smf_n10::get_sm_data(
     curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
     curl_easy_setopt(curl, CURLOPT_HTTPGET, 1);
     curl_easy_setopt(curl, CURLOPT_TIMEOUT_MS, UDM_CURL_TIMEOUT_MS);
+    curl_easy_setopt(curl, CURLOPT_INTERFACE, smf_cfg.sbi.if_name.c_str());
 
     // Response information.
     long httpCode = { 0 };

src/smf_app/smf_n11.cpp

@@ -217,7 +217,7 @@ void smf_n11::send_n1n2_message_transfer_request(
     curl_easy_setopt(curl, CURLOPT_URL, context_res_msg.get_amf_url().c_str());
     curl_easy_setopt(curl, CURLOPT_HTTPGET, 1);
     curl_easy_setopt(curl, CURLOPT_TIMEOUT_MS, AMF_CURL_TIMEOUT_MS);
-    curl_easy_setopt(curl, CURLOPT_INTERFACE, "eno1:smf"); //TODO: enable this only for testing in all-in-one scenario
+    curl_easy_setopt(curl, CURLOPT_INTERFACE, smf_cfg.sbi.if_name.c_str());
 
     mime = curl_mime_init(curl);
     alt = curl_mime_init(curl);