Backend half

SerpentRace_Backend/node_modules/aws-sdk/lib/metadata_service/get_endpoint.js

@@ -0,0 +1,8 @@
+var getEndpoint = function() {
+  return {
+    IPv4: 'http://169.254.169.254',
+    IPv6: 'http://[fd00:ec2::254]',
+  };
+};
+
+module.exports = getEndpoint;

SerpentRace_Backend/node_modules/aws-sdk/lib/metadata_service/get_endpoint_config_options.js

@@ -0,0 +1,12 @@
+var ENV_ENDPOINT_NAME = 'AWS_EC2_METADATA_SERVICE_ENDPOINT';
+var CONFIG_ENDPOINT_NAME = 'ec2_metadata_service_endpoint';
+
+var getEndpointConfigOptions = function() {
+  return {
+    environmentVariableSelector: function(env) { return env[ENV_ENDPOINT_NAME]; },
+    configFileSelector: function(profile) { return profile[CONFIG_ENDPOINT_NAME]; },
+    default: undefined,
+  };
+};
+
+module.exports = getEndpointConfigOptions;

SerpentRace_Backend/node_modules/aws-sdk/lib/metadata_service/get_endpoint_mode.js

@@ -0,0 +1,8 @@
+var getEndpointMode = function() {
+  return {
+    IPv4: 'IPv4',
+    IPv6: 'IPv6',
+  };
+};
+
+module.exports = getEndpointMode;

SerpentRace_Backend/node_modules/aws-sdk/lib/metadata_service/get_endpoint_mode_config_options.js

@@ -0,0 +1,14 @@
+var EndpointMode = require('./get_endpoint_mode')();
+
+var ENV_ENDPOINT_MODE_NAME = 'AWS_EC2_METADATA_SERVICE_ENDPOINT_MODE';
+var CONFIG_ENDPOINT_MODE_NAME = 'ec2_metadata_service_endpoint_mode';
+
+var getEndpointModeConfigOptions = function() {
+  return {
+    environmentVariableSelector: function(env) { return env[ENV_ENDPOINT_MODE_NAME]; },
+    configFileSelector: function(profile) { return profile[CONFIG_ENDPOINT_MODE_NAME]; },
+    default: EndpointMode.IPv4,
+  };
+};
+
+module.exports = getEndpointModeConfigOptions;

SerpentRace_Backend/node_modules/aws-sdk/lib/metadata_service/get_metadata_service_endpoint.js

@@ -0,0 +1,24 @@
+var AWS = require('../core');
+
+var Endpoint = require('./get_endpoint')();
+var EndpointMode = require('./get_endpoint_mode')();
+
+var ENDPOINT_CONFIG_OPTIONS = require('./get_endpoint_config_options')();
+var ENDPOINT_MODE_CONFIG_OPTIONS = require('./get_endpoint_mode_config_options')();
+
+var getMetadataServiceEndpoint = function() {
+  var endpoint = AWS.util.loadConfig(ENDPOINT_CONFIG_OPTIONS);
+  if (endpoint !== undefined) return endpoint;
+
+  var endpointMode = AWS.util.loadConfig(ENDPOINT_MODE_CONFIG_OPTIONS);
+  switch (endpointMode) {
+    case EndpointMode.IPv4:
+      return Endpoint.IPv4;
+    case EndpointMode.IPv6:
+      return Endpoint.IPv6;
+    default:
+      throw new Error('Unsupported endpoint mode: ' + endpointMode);
+  }
+};
+
+module.exports = getMetadataServiceEndpoint;