HttpWebResponse.ProtocolVersion プロパティとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

HttpWebResponse.ProtocolVersion プロパティ

応答で使用される HTTP プロトコルのバージョンを取得します。

名前空間: System.Net
アセンブリ: System (system.dll 内)
構文

Visual Basic (宣言)

Public ReadOnly Property
 ProtocolVersion As Version

Visual Basic (使用法)

Dim instance As HttpWebResponse
Dim value As Version

value = instance.ProtocolVersion

public Version ProtocolVersion { get; }

C++

public:
property Version^ ProtocolVersion {
    Version^ get ();
}

/** @property */
public Version get_ProtocolVersion ()

JScript

public function get ProtocolVersion
 () : Version

プロパティ値
応答の HTTP プロトコルのバージョンを格納する Version。

例外

例外の種類	条件
ObjectDisposedException	現在のインスタンスは破棄されています。

解説

ProtocolVersion プロパティは、インターネットリソースから送信された応答の HTTP プロトコルのバージョン番号を格納します。

使用例

この例では、HttpWebRequest を作成し、HttpWebResponse を問い合わせます。この例では、次に、サーバーが同じバージョンで応答するかどうかを確認します。

Visual Basic

Dim ourUri As New Uri(url)
' Creates an HttpWebRequest with the specified URL. 
Dim myHttpWebRequest As HttpWebRequest = CType(WebRequest.Create(ourUri),
 HttpWebRequest)
myHttpWebRequest.ProtocolVersion = HttpVersion.Version10
' Sends the request and waits for the response.
Dim myHttpWebResponse As HttpWebResponse =
 CType(myHttpWebRequest.GetResponse(), HttpWebResponse)
'The ProtocolVersion property is used to ensure that only Http/1.0 responses
 are accepted. 
If myHttpWebResponse.ProtocolVersion Is HttpVersion.Version10
 Then
    Console.WriteLine(ControlChars.NewLine + "The server responded
 with a version other than Http/1.0")
Else
    If myHttpWebResponse.StatusCode = HttpStatusCode.OK Then
        Console.WriteLine(ControlChars.NewLine + "Request sent
 using version HTTP/1.0. Successfully received response with version Http/1.0 ")
    End If
End If
' Releases the resources of the response.
myHttpWebResponse.Close()

Uri ourUri = new Uri(url);
    // Creates an HttpWebRequest for the specified URL. 
    HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(ourUri);
 
    myHttpWebRequest.ProtocolVersion = HttpVersion.Version10;
    // Sends the HttpWebRequest and waits for the response.
    HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
 
    // Ensures that only Http/1.0 responses are accepted. 
    if(myHttpWebResponse.ProtocolVersion != HttpVersion.Version10)
        Console.WriteLine("\nThe server responded with a version other than
 Http/1.0");
    else
    if (myHttpWebResponse.StatusCode == HttpStatusCode.OK)
        Console.WriteLine("\nRequest sent using version Http/1.0.
 Successfully received response with version HTTP/1.0 ");
    // Releases the resources of the response.
    myHttpWebResponse.Close();

C++

Uri^ ourUri = gcnew Uri( url );
// Creates an HttpWebRequest for the specified URL.
HttpWebRequest^ myHttpWebRequest = (HttpWebRequest^)( WebRequest::Create( ourUri
 ) );
myHttpWebRequest->ProtocolVersion = HttpVersion::Version10;
// Sends the HttpWebRequest and waits for the response.
HttpWebResponse^ myHttpWebResponse = (HttpWebResponse^)( myHttpWebRequest->GetResponse()
 );
// Ensures that only Http/1.0 responses are accepted.
if ( myHttpWebResponse->ProtocolVersion != HttpVersion::Version10
 )
{
   Console::WriteLine( "\nThe server responded with a version other than Http/1.0"
 );
}
else if ( myHttpWebResponse->StatusCode
 == HttpStatusCode::OK )
{
   Console::WriteLine( "\nRequest sent using version Http/1.0.
 Successfully received response with version HTTP/1.0 " );
}
// Releases the resources of the response.
myHttpWebResponse->Close();

Uri ourUri = new Uri(url);

// Creates an HttpWebRequest for the specified URL. 
HttpWebRequest myHttpWebRequest = (HttpWebRequest)
    WebRequest.Create(ourUri);
myHttpWebRequest.set_ProtocolVersion(HttpVersion.Version10);

// Sends the HttpWebRequest and waits for the response.
HttpWebResponse myHttpWebResponse = (HttpWebResponse)
    myHttpWebRequest.GetResponse();

// Ensures that only Http/1.0 responses are accepted. 
if (!myHttpWebResponse.get_ProtocolVersion().
    Equals(HttpVersion.Version10)) {
    Console.WriteLine("\nThe server responded with a version "
        + "other than Http/1.0");
}
else {
    if (myHttpWebResponse.get_StatusCode().
        Equals(HttpStatusCode.OK)) {
        Console.WriteLine("\nRequest sent using version Http/1.0.
 "
            + "Successfully received response with version "
            + "HTTP/1.0 ");
    }
} // Releases the resources of the response.
myHttpWebResponse.Close();