API changes to enumerate bastion hosts accessible from given virtual network

specification/network/resource-manager/Microsoft.Network/stable/2020-05-01/examples/VirtualNetworkGetBastionHosts.json

@@ -0,0 +1,45 @@
+{
+  "parameters": {
+    "api-version": "2020-05-01",
+    "subscriptionId": "subid",
+    "resourceGroupName": "rg1",
+    "virtualNetworkName": "vnet"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "name": "bastionhost'",
+            "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/bastionHosts/bastionhosttenant'",
+            "type": "Microsoft.Network/bastionHosts",
+            "etag": "w/\\00000000-0000-0000-0000-000000000000\\",
+            "location": "West US",
+            "properties": {
+              "provisioningState": "Succeeded",
+              "dnsName": "bst-9d89d361-100e-4c01-b92d-466548c476dc.bastion.azure.com",
+              "ipConfigurations": [
+                {
+                  "name": "bastionHostIpConfiguration",
+                  "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/bastionHosts/bastionhosttenant/bastionHostIpConfigurations/bastionHostIpConfiguration",
+                  "etag": "w/\\00000000-0000-0000-0000-000000000000\\",
+                  "type": "Microsoft.Network/bastionHosts/bastionHostIpConfigurations",
+                  "properties": {
+                    "provisioningState": "Succeeded",
+                    "privateIPAllocationMethod": "Dynamic",
+                    "subnet": {
+                      "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/virtualNetworks/vnet/subnets/BastionHostSubnet"
+                    },
+                    "publicIPAddress": {
+                      "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/publicIPAddresses/pipName"
+                    }
+                  }
+                }
+              ]
+            }
+          }
+        ]
+      }
+    }
+  }
+}

specification/network/resource-manager/Microsoft.Network/stable/2020-05-01/virtualNetwork.json

@@ -1232,6 +1232,53 @@
           "nextLinkName": "nextLink"
         }
       }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/virtualNetworks/{virtualNetworkName}/bastionHosts": {
+      "get": {
+        "operationId": "VirtualNetworks_GetBastionHosts",
+        "description": "Get a list of bastion hosts accessible from the given network.",
+        "parameters": [
+          {
+            "name": "resourceGroupName",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "description": "The name of the resource group."
+          },
+          {
+            "name": "virtualNetworkName",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "description": "The name of the virtual network."
+          },
+          {
+            "$ref": "./network.json#/parameters/ApiVersionParameter"
+          },
+          {
+            "$ref": "./network.json#/parameters/SubscriptionIdParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "List of bastion hosts accessible that can connect to resources in the given virtual network",
+            "schema": {
+              "$ref": "./bastionHost.json#/definitions/BastionHostListResult"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "./network.json#/definitions/CloudError"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Check IP address availability": {
+            "$ref": "./examples/VirtualNetworkGetBastionHosts.json"
+          }
+        }
+      }
     }
   },
   "definitions": {