throw instead of exit

clib/sslclient.cpp

@@ -114,8 +114,7 @@ HttpClient::doGetRequest(const std::string &url, const std::unordered_map<std::s
 std::string HttpClient::inetAddress(std::string hostname) {
 	hostent *record = gethostbyname(hostname.c_str());
 	if (record == NULL) {
-		std::cerr << hostname << " is unavailable" << std::endl;
-		exit(1);
+		throw std::runtime_error(hostname + " network unavailable.");
 	}
 	in_addr *address = (in_addr *) record->h_addr;
 	std::string ip_address = inet_ntoa(*address);