1
我们有一个应用程序需要使用SSL连接与某些政府Web服务进行通信。权限被拒绝使用JBoss部署到Openshift后出错
当开发环境（本地），它完美的作品，但在运行时，我们部署到OpenShift蚂蚁尝试运行问题出来相同的任务，并显示出巨大的错误堆栈跟踪，我们可以说，这个问题是由特异性OpenShift：
10:00:29,286 WARN [org.apache.axiom.util.stax.dialect.StAXDialectDetector] (http--127.2.25.1-8080-6) Unable to determine dialect of the StAX implementation at jar:file:/opt/jboss-as-7.1.1.Final/jboss-modules.jar!/
10:00:33,146 INFO [org.apache.commons.httpclient.HttpMethodDirector] (http--127.2.25.1-8080-6) I/O exception (java.net.BindException) caught when processing request: Permission denied
10:00:33,148 INFO [org.apache.commons.httpclient.HttpMethodDirector] (http--127.2.25.1-8080-6) Retrying request
10:00:33,214 INFO [org.apache.commons.httpclient.HttpMethodDirector] (http--127.2.25.1-8080-6) I/O exception (java.net.BindException) caught when processing request: Permission denied
10:00:33,216 INFO [org.apache.commons.httpclient.HttpMethodDirector] (http--127.2.25.1-8080-6) Retrying request
10:00:33,219 INFO [org.apache.commons.httpclient.HttpMethodDirector] (http--127.2.25.1-8080-6) I/O exception (java.net.BindException) caught when processing request: Permission denied
10:00:33,220 INFO [org.apache.commons.httpclient.HttpMethodDirector] (http--127.2.25.1-8080-6) Retrying request
10:00:33,223 INFO [org.apache.axis2.transport.http.HTTPSender] (http--127.2.25.1-8080-6) Unable to sendViaPost to url[https://homologacao.nfe.fazenda.sp.gov.br/cteWEB/services/cteRecepcao.asmx]: java.net.BindException: Permission denied
at java.net.PlainSocketImpl.socketBind(Native Method) [rt.jar:1.7.0_55]
at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376) [rt.jar:1.7.0_55]
at java.net.Socket.bind(Socket.java:631) [rt.jar:1.7.0_55]
at sun.security.ssl.BaseSSLSocketImpl.bind(BaseSSLSocketImpl.java:114) [jsse.jar:1.7.0_55]
at sun.security.ssl.SSLSocketImpl.bind(SSLSocketImpl.java:65) [jsse.jar:1.7.0_55]
at br.com.ps.transp.util.cte.HSProtocolSocketFactory.createSocket(HSProtocolSocketFactory.java:91) [classes:]
at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707) [commons-httpclient-3.1.jar:]
at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361) [commons-httpclient-3.1.jar:]
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387) [commons-httpclient-3.1.jar:]
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171) [commons-httpclient-3.1.jar:]
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397) [commons-httpclient-3.1.jar:]
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:346) [commons-httpclient-3.1.jar:]
at org.apache.axis2.transport.http.AbstractHTTPSender.executeMethod(AbstractHTTPSender.java:560) [axis2-transport-http-1.5.3.jar:]
at org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:199) [axis2-transport-http-1.5.3.jar:]
at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:76) [axis2-transport-http-1.5.3.jar:]
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:400) [axis2-transport-http-1.5.3.jar:]
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:225) [axis2-transport-http-1.5.3.jar:]
at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:438) [axis2-kernel-1.5.3.jar:1.5.3]
at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:402) [axis2-kernel-1.5.3.jar:1.5.3]
at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229) [axis2-kernel-1.5.3.jar:1.5.3]
at org.apache.axis2.client.OperationClient.execute(OperationClient.java:165) [axis2-kernel-1.5.3.jar:1.5.3]
at br.inf.portalfiscal.www.cte.wsdl.cterecepcao.CteRecepcaoStub.cteRecepcaoLote(CteRecepcaoStub.java:196) [classes:]
at br.com.ps.transp.util.cte.Transmissor.enviarCte(Transmissor.java:119) [classes:]
at br.com.ps.transp.mb.ConhecimentoMB.transmitirCte(ConhecimentoMB.java:913) [classes:]
at br.com.ps.transp.mb.ConhecimentoMB$Proxy$_$$_WeldClientProxy.transmitirCte(ConhecimentoMB$Proxy$_$$_WeldClientProxy.java) [classes:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_55]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_55]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_55]
at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_55]
at org.apache.el.parser.AstValue.invoke(AstValue.java:262) [jbossweb-7.0.13.Final.jar:]
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278) [jbossweb-7.0.13.Final.jar:]
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:39) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]
at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:153) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:769) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.UICommand.broadcast(UICommand.java:300) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) [jsf-impl-2.1.7-jbossorg-2.jar:]
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:98) [primefaces-5.0.jar:5.0]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:62) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343) [spring-web-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260) [spring-web-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.apache.logging.log4j.core.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:66) [log4j-core-2.0-rc1.jar:2.0-rc1]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]
at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) [jboss-as-jpa-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]
at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_55]
我们有一个类做动作之前注册的通信协议，如下：
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.Principal;
import java.security.PrivateKey;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.net.SocketFactory;
import javax.net.ssl.KeyManager;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509KeyManager;
import org.apache.commons.httpclient.ConnectTimeoutException;
import org.apache.commons.httpclient.params.HttpConnectionParams;
import org.apache.commons.httpclient.protocol.ProtocolSocketFactory;
import br.com.ps.transp.util.Const;
public class HSProtocolSocketFactory implements ProtocolSocketFactory {
private static final String TRUSTSTORE = System.getProperty("javax.net.ssl.trustStore");
private SSLContext ssl = null;
private X509Certificate certificate;
private PrivateKey privateKey;
public HSProtocolSocketFactory(X509Certificate certificate, PrivateKey privateKey) {
this.certificate = certificate;
this.privateKey = privateKey;
}
private SSLContext createSSLContext() {
try {
KeyManager[] keyManagers = createKeyManagers();
TrustManager[] trustManagers = createTrustManagers();
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(keyManagers, trustManagers, null);
return sslContext;
} catch (KeyManagementException e) {
Logger.getLogger(HSProtocolSocketFactory.class.getName()).log(Level.SEVERE, null, e);
} catch (KeyStoreException e) {
Logger.getLogger(HSProtocolSocketFactory.class.getName()).log(Level.SEVERE, null, e);
} catch (NoSuchAlgorithmException e) {
Logger.getLogger(HSProtocolSocketFactory.class.getName()).log(Level.SEVERE, null, e);
} catch (CertificateException e) {
Logger.getLogger(HSProtocolSocketFactory.class.getName()).log(Level.SEVERE, null, e);
} catch (IOException e) {
Logger.getLogger(HSProtocolSocketFactory.class.getName()).log(Level.SEVERE, null, e);
}
return null;
}
private SSLContext getSSLContext() {
if (ssl == null) {
ssl = createSSLContext();
}
return ssl;
}
public Socket createSocket(String host, int port, InetAddress localAddress, int localPort, HttpConnectionParams params)
throws IOException, UnknownHostException, ConnectTimeoutException {
if (params == null) {
throw new IllegalArgumentException("Parameters may not be null");
}
int timeout = params.getConnectionTimeout();
SocketFactory socketfactory = getSSLContext().getSocketFactory();
if (timeout == 0) {
return socketfactory.createSocket(host, port, localAddress, localPort);
}
Socket socket = socketfactory.createSocket();
SocketAddress localaddr = new InetSocketAddress(localAddress, localPort);
SocketAddress remoteaddr = new InetSocketAddress(host, port);
socket.bind(localaddr);
try {
socket.connect(remoteaddr, timeout);
} catch (Throwable t) {
Logger.getLogger(HSProtocolSocketFactory.class.getName()).log(Level.SEVERE, null, t);
throw new ConnectTimeoutException("Connection timeout error", t);
}
return socket;
}
public Socket createSocket(String host, int port, InetAddress clientHost, int clientPort) throws IOException, UnknownHostException {
return getSSLContext().getSocketFactory().createSocket(host, port, clientHost, clientPort);
}
public Socket createSocket(String host, int port) throws IOException, UnknownHostException {
return getSSLContext().getSocketFactory().createSocket(host, port);
}
public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, UnknownHostException {
return getSSLContext().getSocketFactory().createSocket(socket, host, port, autoClose);
}
public KeyManager[] createKeyManagers() {
HSKeyManager keyManager = new HSKeyManager(certificate, privateKey);
return new KeyManager[] { keyManager };
}
public TrustManager[] createTrustManagers() throws KeyStoreException, NoSuchAlgorithmException, CertificateException, IOException {
KeyStore trustStore = KeyStore.getInstance("JKS");
char[] senhaTrustStore = Const.SENHA_CACERTS.toCharArray();
InputStream inputCacerts = null;
inputCacerts = new FileInputStream(TRUSTSTORE);
trustStore.load(inputCacerts, senhaTrustStore);
TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
trustManagerFactory.init(trustStore);
return trustManagerFactory.getTrustManagers();
}
class HSKeyManager implements X509KeyManager {
private X509Certificate certificate;
private PrivateKey privateKey;
public HSKeyManager(X509Certificate certificate, PrivateKey privateKey) {
this.certificate = certificate;
this.privateKey = privateKey;
}
public String chooseClientAlias(String[] arg0, Principal[] arg1, Socket arg2) {
return certificate.getIssuerDN().getName();
}
public String chooseServerAlias(String arg0, Principal[] arg1, Socket arg2) {
return null;
}
public X509Certificate[] getCertificateChain(String arg0) {
return new X509Certificate[] { certificate };
}
public String[] getClientAliases(String arg0, Principal[] arg1) {
return new String[] { certificate.getIssuerDN().getName() };
}
public PrivateKey getPrivateKey(String arg0) {
return privateKey;
}
public String[] getServerAliases(String arg0, Principal[] arg1) {
return null;
}
}
}
之前做了沟通，我们称之为：
Protocol protocol = new Protocol("https", new HSProtocolSocketFactory(x509Certificate, privateKey), 443);
Protocol.registerProtocol("https", protocol);
我们已经看到很多关于在OpenShift上绑定端口的帖子，但没有任何明确的解释。
我再说一遍，它在本地发送和接收完全符合预期。
任何人有任何想法我们可以做什么来解决这个问题？
在此先感谢。
您在调用'createSocket'时指定了哪个本地端口？ 'java.net.BindException：Permission denied'错误通常意味着你尝试绑定到一个低端口（<1024），没有root权限。 –
是的，这是我在很多帖子上听到并阅读的内容，实际上我没有指定任何本地端口（如代码中所示）。你认为我应该吗？究竟在哪里？ –