Java SSL套接字无法从客户端

时间:2017-08-27 21:26:04

标签: java python sockets ssl

我正在尝试在我正在编写的服务器和我不太了解的设备之间建立SSL连接,除了它可能嵌入了公钥(因为你会看到)下面我有私钥)。

我所知道的是,我有一个服务器的python代码,该设备能够连接,发送和接收消息。

除了python代码之外,我还收到了证书(PEM格式)和我在套接字初始化期间提供的私钥。 python代码如下:

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print 'Socket created'

#Bind socket to local host and port
try:
sock.bind((HOST, 34567))
except socket.error as msg:
  print 'Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
  sys.exit()
print 'Socket bind complete'
sslSocket = ssl.wrap_socket(sock , server_side=True, certfile="device.crt", keyfile="device.key", ssl_version=ssl.PROTOCOL_TLSv1_2)

#Start listening on socket
sslSocket.listen(10)
print 'Socket now listening'

#wait to accept a connection - blocking call
print 'wait to accept a connection'

conn, addr = sslSocket.accept()
print 'Connected with ' + addr[0] + ':' + str(addr[1])

#start new thread takes 1st argument as a function name to be run, second is 
the tuple of arguments to the function.
start_new_thread(receiveThread ,(conn,))
time.sleep(1)
start_new_thread(clientThread ,(conn,))

while 1:
time.sleep(1)
if exitNow:
    print 'Exit'
    break

sock.close()

print 'exiting'
sys.exit()

我对套接字没有经验,但根据我在Java中读到的套接字,我必须初始化并设置密钥库和信任库来创建SSL套接字。

我所做的是(根据this SO answer

将我的证书和密钥转换为PKCS12证书 -

openssl pkcs12 -export -in device.crt -inkey device.key -certfile device.crt -name "someName" -out device.p12

创建密钥库并将新生成的证书导入其中 -

keytool -importkeystore -deststorepass 123456 -destkeypass 123456 -destkeystore keystore.jks -srckeystore device.p12 -srcstoretype PKCS12 -srcstorepass 1234 -alias someName

再次复制该密钥库并将其称为信任库(不确定这是正确的做法)。 然后我使用生成的密钥库来使用以下代码初始化套接字:(请注意我使用Spring Integration,因为我的最终目标是尝试启动应用程序,它将在接收REST API调用后在套接字上发送消息):

@EnableIntegration
@IntegrationComponentScan
@Configuration
public class SocketConfiguration implements 
ApplicationListener<TcpConnectionEvent> {

private final org.slf4j.Logger log = LoggerFactory.getLogger(getClass());

@Bean
public AbstractServerConnectionFactory AbstractServerConnectionFactory() {
    TcpNetServerConnectionFactory tcpNetServerConnectionFactory = new TcpNetServerConnectionFactory(34567);
    DefaultTcpNetSSLSocketFactorySupport tcpNetSSLSocketFactory = tcpSocketFactorySupport();
    tcpNetServerConnectionFactory.setTcpSocketFactorySupport(tcpNetSSLSocketFactory);
    return tcpNetServerConnectionFactory;
}
@Bean
public DefaultTcpNetSSLSocketFactorySupport tcpSocketFactorySupport() {
    TcpSSLContextSupport sslContextSupport = new DefaultTcpSSLContextSupport("keystore.jks",
            "trustStore.jks", "123456", "123456");
    DefaultTcpNetSSLSocketFactorySupport tcpSocketFactorySupport =
            new DefaultTcpNetSSLSocketFactorySupport(sslContextSupport);
    return tcpSocketFactorySupport;
}

@Bean
public TcpInboundGateway TcpInboundGateway(AbstractServerConnectionFactory connectionFactory) {
    TcpInboundGateway inGate = new TcpInboundGateway();
    inGate.setConnectionFactory(connectionFactory);
    inGate.setRequestChannel(getMessageChannel());
    return inGate;
}

@Bean
public MessageChannel getMessageChannel() {
    return new DirectChannel();
}

@MessageEndpoint
public class Echo {

    @Transformer(inputChannel = "getMessageChannel")
    public String convert(byte[] bytes) throws Exception {
        return new String(bytes);
    }

}

private static ConcurrentHashMap<String, TcpConnection> tcpConnections = new ConcurrentHashMap<>();

@Override
public void onApplicationEvent(TcpConnectionEvent tcpEvent) {
    TcpConnection source = (TcpConnection) tcpEvent.getSource();
    if (tcpEvent instanceof TcpConnectionOpenEvent) {

        log.info("Socket Opened " + source.getConnectionId());
        tcpConnections.put(tcpEvent.getConnectionId(), source);

        if (!authorizeIncomingConnection(source.getSocketInfo())) {
            log.warn("Socket Rejected " + source.getConnectionId());
            source.close();
        }

    } else if (tcpEvent instanceof TcpConnectionCloseEvent) {
        log.info("Socket Closed " + source.getConnectionId());
        tcpConnections.remove(source.getConnectionId());
    }
}

private boolean authorizeIncomingConnection(SocketInfo socketInfo) {
    //Authorization Logic , Like Ip,Mac Address WhiteList or anyThing else !
    return (System.currentTimeMillis() / 1000) % 2 == 0;
}

我认为套接字是成功创建的,因为在我的Windows机器上运行netstat显示端口40003是由java进程占用的(当我终止进程时不是这样。)

现在唯一的问题是设备仍然无法与我的套接字连接。 不幸的是,这是一个封闭的设备,我没有信息,无法调试它,了解发生了什么以及为什么它无法连接(也没有从中获取任何日志)。 我唯一的参考是 - 当我在运行java代码的同一台机器上运行附加的Python代码时,相同的设备能够连接到套接字(显然不在一起)。

请指点我的java代码与python代码不同的地方?或者我可以使用的任何其他方向。

谢谢!

1 个答案:

答案 0 :(得分:0)

原来问题出在我的盒子防火墙上。 python在防火墙中有例外(我的假设是这些异常是在安装过程中插入但不太确定),而java没有这些异常,所以java进程无法&#34;暴露&#34 ;这个对外界的插座