http: only wait for headers in HEAD calls

mjcheetham · mjcheetham · commit 05c63b0bc1bd · 2021-10-07T15:48:11.000+01:00
Speed up HTTP HEAD calls made via the HeadAsync extension method by only
waiting until the headers have been received, rather than the entire
message content.
diff --git a/src/shared/Microsoft.Git.CredentialManager/HttpClientExtensions.cs b/src/shared/Microsoft.Git.CredentialManager/HttpClientExtensions.cs
@@ -17,7 +17,7 @@ public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, string
 
         public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, Uri requestUri)
         {
-            return client.HeadAsync(requestUri, HttpCompletionOption.ResponseContentRead);
+            return client.HeadAsync(requestUri, HttpCompletionOption.ResponseHeadersRead);
         }
 
         public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, string requestUri, HttpCompletionOption completionOption)
@@ -37,7 +37,7 @@ public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, string
 
         public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, Uri requestUri, CancellationToken cancellationToken)
         {
-            return client.HeadAsync(requestUri, HttpCompletionOption.ResponseContentRead, cancellationToken);
+            return client.HeadAsync(requestUri, HttpCompletionOption.ResponseHeadersRead, cancellationToken);
         }
 
         public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, string requestUri, HttpCompletionOption completionOption, CancellationToken cancellationToken)

Original file line number	Diff line number	Diff line change
`@@ -17,7 +17,7 @@ public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, string`
`17`	`17`
`18`	`18`	`public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, Uri requestUri)`
`19`	`19`	`{`
`20`		`- return client.HeadAsync(requestUri, HttpCompletionOption.ResponseContentRead);`
	`20`	`+ return client.HeadAsync(requestUri, HttpCompletionOption.ResponseHeadersRead);`
`21`	`21`	`}`
`22`	`22`
`23`	`23`	`public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, string requestUri, HttpCompletionOption completionOption)`
`@@ -37,7 +37,7 @@ public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, string`
`37`	`37`
`38`	`38`	`public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, Uri requestUri, CancellationToken cancellationToken)`
`39`	`39`	`{`
`40`		`- return client.HeadAsync(requestUri, HttpCompletionOption.ResponseContentRead, cancellationToken);`
	`40`	`+ return client.HeadAsync(requestUri, HttpCompletionOption.ResponseHeadersRead, cancellationToken);`
`41`	`41`	`}`
`42`	`42`
`43`	`43`	`public static Task<HttpResponseMessage> HeadAsync(this HttpClient client, string requestUri, HttpCompletionOption completionOption, CancellationToken cancellationToken)`