Support GET for ping endpoint

Author: mathewc

src/WebJobs.Script.WebHost/Controllers/AdminController.cs

@@ -133,12 +133,16 @@ public IHttpActionResult GetHostStatus()
             }
         }
 
+        [HttpGet]
         [HttpPost]
         [Route("admin/host/ping")]
         [AllowAnonymous]
-        public IHttpActionResult Ping()
+        public HttpResponseMessage Ping()
         {
-            return Ok();
+            var response = new HttpResponseMessage(HttpStatusCode.OK);
+            response.Headers.Add("Cache-Control", "no-store, no-cache");
+
+            return response;
         }
 
         [HttpPost]

src/WebJobs.Script.WebHost/GlobalSuppressions.cs

@@ -113,4 +113,5 @@
 [assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Scope = "member", Target = "Microsoft.Azure.WebJobs.Script.WebHost.WebHostResolver.#CreateDefaultTraceWriter(Microsoft.Azure.WebJobs.Script.WebHost.WebHostSettings)")]
 [assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Scope = "member", Target = "Microsoft.Azure.WebJobs.Script.WebHost.WebHostResolver.#CreateDefaultLoggerFactory(Microsoft.Azure.WebJobs.Script.WebHost.WebHostSettings)")]
 [assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1822:MarkMembersAsStatic", Scope = "member", Target = "Microsoft.Azure.WebJobs.Script.WebHost.Diagnostics.FunctionsSystemLogsEventSource.#SetActivityId(System.String)")]
+[assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Scope = "member", Target = "Microsoft.Azure.WebJobs.Script.WebHost.Controllers.AdminController.#Ping()")]
 

test/WebJobs.Script.Tests.Integration/SamplesEndToEndTests.cs

@@ -994,13 +994,17 @@ public async Task ServiceBusTopicTrigger_ManualInvoke_Succeeds()
             Assert.Equal(value, result.Trim());
         }
 
-        [Fact]
-        public async Task HostPing_Succeeds()
+        [Theory]
+        [InlineData("GET")]
+        [InlineData("POST")]
+        public async Task HostPing_Succeeds(string method)
         {
             string uri = "admin/host/ping";
-            HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, uri);
-            HttpResponseMessage response = await this._fixture.HttpClient.SendAsync(request);
+            HttpRequestMessage request = new HttpRequestMessage(new HttpMethod(method), uri);
+            HttpResponseMessage response = await _fixture.HttpClient.SendAsync(request);
             Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+            var cacheHeader = response.Headers.GetValues("Cache-Control").Single();
+            Assert.Equal("no-store, no-cache", cacheHeader);
         }
 
         [Fact]