アンドロイドアプリケーションからHTTPSレストサービスを利用する方法

Question

私はアンドロイドアプリケーション開発に非常に慣れています。私はC＃.netで作成されたWCF RESTサービスのクライアントとしてAndroidアプリケーションを使用しようとしているデモプロジェクトに取り組んでいます。このサービスは既にインターネットサーバーでホストされており、他の.Net Webアプリケーション（クライアント）で同じサービスを使用しているため、正常に動作しています。 しかし、私はアンドロイドアプリケーションから同じRESTサービス（JSONオブジェクトを返す）にアクセスしようとすると、それは例外をスローしています。

「にjava.io.IOException：SSLハンドシェイクの失敗：SSLライブラリで失敗、通常、プロトコルエラー エラー：140770FC：SSLルーチン：SSL23_GET_SERVER_HELLO：不明なプロトコル（外部/ opensslの/ SSL/s23_clnt.c：585 0xaf586674 ：0x00000000） "

以下は、サービスの接続に使用したコードです。

final String url = "https://mywebsite.com/service/myservice.svc/userid/" + usrid + "/" + password + "/authenticate"; 

     Uri uri = Uri.parse(url); 
     HttpClient httpclient = new DefaultHttpClient(); 
     HttpHost host = new HttpHost(uri.getHost(), 443, uri.getScheme()); 
     HttpPost httppost = new HttpPost(uri.getPath()); 
     try { 
      HttpResponse response = httpclient.execute(host, httppost); // Throwing exception on this line 
       HttpEntity entity = response.getEntity(); 
      if (entity != null) { 
       InputStream instream = entity.getContent(); 
       String result= convertStreamToString(instream); 
       JSONArray nameArray=json.names(); 
       JSONArray valArray=json.toJSONArray(nameArray); 
       for(int i=0;i<valArray.length();i++) 
       { 
        nameArray.getString(i); 
       } 
       instream.close(); 
      } 


     } catch (ClientProtocolException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (JSONException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

は、私が確認してくださいSSL証明書エラーを無視するために、私自身のTrustManagerでSSLContextの作成する必要がある場合。はいの場合は、コード例も提供してください。

Answer 1

はいSSL証明書エラーを無視するには、独自のTrustManagerを使用してSSLContextを作成する必要があります。

EasySSLSocketFactory.java

import java.io.IOException; 
import java.net.InetAddress; 
import java.net.InetSocketAddress; 
import java.net.Socket; 
import java.net.UnknownHostException; 

import javax.net.ssl.SSLContext; 
import javax.net.ssl.SSLSocket; 
import javax.net.ssl.TrustManager; 

import org.apache.http.conn.ConnectTimeoutException; 
import org.apache.http.conn.scheme.LayeredSocketFactory; 
import org.apache.http.conn.scheme.SocketFactory; 
import org.apache.http.params.HttpConnectionParams; 
import org.apache.http.params.HttpParams; 

public class EasySSLSocketFactory implements SocketFactory, LayeredSocketFactory { 

private SSLContext sslcontext = null; 

private static SSLContext createEasySSLContext() throws IOException { 
    try { 
     SSLContext context = SSLContext.getInstance("TLS"); 
     context.init(null, new TrustManager[] { new EasyX509TrustManager(null) }, null); 
     return context; 
    } catch (Exception e) { 
     throw new IOException(e.getMessage()); 
    } 
} 

private SSLContext getSSLContext() throws IOException { 
    if (this.sslcontext == null) { 
     this.sslcontext = createEasySSLContext(); 
    } 
    return this.sslcontext; 
} 

/** 
* @see org.apache.http.conn.scheme.SocketFactory#connectSocket(java.net.Socket, java.lang.String, int, 
*  java.net.InetAddress, int, org.apache.http.params.HttpParams) 
*/ 
public Socket connectSocket(Socket sock, String host, int port, InetAddress localAddress, int localPort, 
     HttpParams params) throws IOException, UnknownHostException, ConnectTimeoutException { 
    int connTimeout = HttpConnectionParams.getConnectionTimeout(params); 
    int soTimeout = HttpConnectionParams.getSoTimeout(params); 
    InetSocketAddress remoteAddress = new InetSocketAddress(host, port); 
    SSLSocket sslsock = (SSLSocket) ((sock != null) ? sock : createSocket()); 

    if ((localAddress != null) || (localPort > 0)) { 
     // we need to bind explicitly 
     if (localPort < 0) { 
      localPort = 0; // indicates "any" 
     } 
     InetSocketAddress isa = new InetSocketAddress(localAddress, localPort); 
     sslsock.bind(isa); 
    } 

    sslsock.connect(remoteAddress, connTimeout); 
    sslsock.setSoTimeout(soTimeout); 
    return sslsock; 

} 

/** 
* @see org.apache.http.conn.scheme.SocketFactory#createSocket() 
*/ 
public Socket createSocket() throws IOException { 
    return getSSLContext().getSocketFactory().createSocket(); 
} 

/** 
* @see org.apache.http.conn.scheme.SocketFactory#isSecure(java.net.Socket) 
*/ 
public boolean isSecure(Socket socket) throws IllegalArgumentException { 
    return true; 
} 

/** 
* @see org.apache.http.conn.scheme.LayeredSocketFactory#createSocket(java.net.Socket, java.lang.String, int, 
*  boolean) 
*/ 
public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, 
     UnknownHostException { 
    return getSSLContext().getSocketFactory().createSocket(socket, host, port, autoClose); 
} 

// ------------------------------------------------------------------- 
// javadoc in org.apache.http.conn.scheme.SocketFactory says : 
// Both Object.equals() and Object.hashCode() must be overridden 
// for the correct operation of some connection managers 
// ------------------------------------------------------------------- 

public boolean equals(Object obj) { 
    return ((obj != null) && obj.getClass().equals(EasySSLSocketFactory.class)); 
} 

public int hashCode() { 
    return EasySSLSocketFactory.class.hashCode(); 
} 

} 

EasyX509TrustManager.java

import java.security.KeyStore; 
import java.security.KeyStoreException; 
import java.security.NoSuchAlgorithmException; 
import java.security.cert.CertificateException; 
import java.security.cert.X509Certificate; 

import javax.net.ssl.TrustManager; 
import javax.net.ssl.TrustManagerFactory; 
import javax.net.ssl.X509TrustManager; 

public class EasyX509TrustManager implements X509TrustManager { 

private X509TrustManager standardTrustManager = null; 

/** 
* Constructor for EasyX509TrustManager. 
*/ 
public EasyX509TrustManager(KeyStore keystore) throws NoSuchAlgorithmException, KeyStoreException { 
    super(); 
    TrustManagerFactory factory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm()); 
    factory.init(keystore); 
    TrustManager[] trustmanagers = factory.getTrustManagers(); 
    if (trustmanagers.length == 0) { 
     throw new NoSuchAlgorithmException("no trust manager found"); 
    } 
    this.standardTrustManager = (X509TrustManager) trustmanagers[0]; 
} 

/** 
* @see javax.net.ssl.X509TrustManager#checkClientTrusted(X509Certificate[],String authType) 
*/ 
public void checkClientTrusted(X509Certificate[] certificates, String authType) throws CertificateException { 
    standardTrustManager.checkClientTrusted(certificates, authType); 
} 

/** 
* @see javax.net.ssl.X509TrustManager#checkServerTrusted(X509Certificate[],String authType) 
*/ 
public void checkServerTrusted(X509Certificate[] certificates, String authType) throws CertificateException { 
    if ((certificates != null) && (certificates.length == 1)) { 
     certificates[0].checkValidity(); 
    } else { 
     standardTrustManager.checkServerTrusted(certificates, authType); 
    } 
} 

/** 
* @see javax.net.ssl.X509TrustManager#getAcceptedIssuers() 
*/ 
public X509Certificate[] getAcceptedIssuers() { 
    return this.standardTrustManager.getAcceptedIssuers(); 
} 

} 

今すぐコールHTTPSサービス：

String urlToSendRequest = "https://example.com"; 
      String targetDomain = "example.com"; 

    DefaultHttpClient httpClient = new DefaultHttpClient(); 

    SchemeRegistry schemeRegistry = new SchemeRegistry(); 
      schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80)); 
schemeRegistry.register(new Scheme("https", new EasySSLSocketFactory(), 443)); 

HttpParams params = new BasicHttpParams(); 
params.setParameter(ConnManagerPNames.MAX_TOTAL_CONNECTIONS, 30); 
       params.setParameter(ConnManagerPNames.MAX_CONNECTIONS_PER_ROUTE, new ConnPerRouteBean(1)); 
      params.setParameter(HttpProtocolParams.USE_EXPECT_CONTINUE, false); 
    HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1); 
    HttpProtocolParams.setContentCharset(params, "utf8"); 
    ClientConnectionManager cm = new ThreadSafeClientConnManager(params, schemeRegistry); 
    httpClient = new DefaultHttpClient(cm, params); 

    HttpHost targetHost = new HttpHost(targetDomain, 443, "https"); 
      // Using POST here 
    HttpPost httpPost = new HttpPost(urlToSendRequest); 
      // Make sure the server knows what kind of a response we will accept 

    // Also be sure to tell the server what kind of content we are sending 
    httpPost.addHeader("Content-Type", "application/xml"); 

    StringEntity entity = new StringEntity("<input>test</input>", "UTF-8"); 
      entity.setContentType("application/xml"); 
      httpPost.setEntity(entity); 


CredentialsProvider credentialsProvider = new BasicCredentialsProvider(); 
      //set the user credentials for our site "example.com" 
credentialsProvider.setCredentials(new AuthScope(targetDomain, AuthScope.ANY_PORT), 
      new UsernamePasswordCredentials("", "")); 
      HttpContext context = new BasicHttpContext(); 
context.setAttribute("http.auth.credentials-provider", credentialsProvider); 

      // execute is a blocking call, it's best to call this code in a 
      // thread separate from the ui's 
HttpResponse response = httpClient.execute(httpPost, context); 

Answer 2

あなたが言及しているコード実際のデバイスで動作します。あなたが提示した問題は、443ポートをブロックするPCのファイアウォールが原因です。

ファイアウォールを無効にして、エミュレータでアプリケーションを試してみてください。私はそれが動作すると信じています。