我正在尝试构建一个登录页面。为此,我想打开 SSL 套接字并发出 HTTPS 请求,但我在该行中收到未知主机异常
SSLSocket skt = (SSLSocket)sslsf.createSocket("https://31.21.18.222/room_info/x.txt" , 443);
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有人可以告诉我我做错了什么吗?另外,我已经关闭了主机验证,因为我的程序中不需要它。
`public void clickLogin() throws IOException, CertificateException, KeyStoreException, NoSuchAlgorithmException, KeyManagementException {
URL url = new URL ("https://31.21.18.222/room_info/x.txt");
HttpsURLConnection connection = null;
KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
keyStore.load(null); //Make an empty store
InputStream fis = new FileInputStream("C:/Documents and Settings/user/Desktop/PK/localhost.crt");
BufferedInputStream bis = new BufferedInputStream(fis);
CertificateFactory cf = CertificateFactory.getInstance("X.509");
while (bis.available() > 0) {
java.security.cert.Certificate cert = cf.generateCertificate(bis);
keyStore.setCertificateEntry("localhost", cert);
}
// write code for turning off client verification
TrustManagerFactory tmf = TrustManagerFactory.getInstance("X509");
tmf.init(keyStore);
SSLContext context = SSLContext.getInstance("SSL");
context.init(null, tmf.getTrustManagers() , null);
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
SSLSocketFactory sslsf = context.getSocketFactory();
SSLSocket skt = (SSLSocket)sslsf.createSocket("https://31.21.18.222/room_info/x.txt" , 443);
skt.setUseClientMode(true);
SSLSession s = skt.getSession(); // handshake implicitly done
skt.setKeepAlive(true);
connection = (HttpsURLConnection) url.openConnection();
// Host name verification off
connection.setHostnameVerifier(new HostnameVerifier()
{
public boolean verify(String hostname, SSLSession session)
{
return true;
}
}); `
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如果您想使用 来打开套接字createSocket,则需要使用主机名(或 IP 地址),而不是完整的 URL:
example : sslsf.createSocket("31.21.18.222" , 443);
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此外:
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider())(默认情况下)。TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())使用代替可能更好X.509,特别是因为 TMF 的默认算法是PKIX, 而不是X.509。createSocket将根据信任锚验证证书,但不会检查主机名(这也是防止 MITM 攻击所必需的)。为此,通常最好使用主机名而不是 IP 地址。| 归档时间: |
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