标签: socketexception

有时我在向WebService执行HttpWebRequest时遇到以下错误.我也复制了下面的代码.

System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:80
   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)
   at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.GetRequestStream()

ServicePointManager.CertificatePolicy = new TrustAllCertificatePolicy();
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

request.PreAuthenticate = true;
request.Credentials = networkCredential(sla);
request.Method = WebRequestMethods.Http.Post;
request.ContentType = …

我们java.net.SocketException: Connection reset在日志中看到频繁但间歇性的 错误.我们不确定Connection reset错误实际来自何处,以及如何进行调试.

该问题似乎与我们尝试发送的邮件无关.请注意,消息不是 connection reset by peer.

有关此异常的典型原因可能是什么的建议,以及我们如何进行？

这是一个代表性的堆栈跟踪(com.companyname.mtix.sms是我们的组件):

    java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(SocketInputStream.java:168)
        at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
        at java.io.BufferedInputStream.read(BufferedInputStream.java:235)
        at org.apache.commons.httpclient.HttpParser.readRawLine(HttpParser.java:77)
        at org.apache.commons.httpclient.HttpParser.readLine(HttpParser.java:105)
        at org.apache.commons.httpclient.HttpConnection.readLine(HttpConnection.java:1115)
        at org.apache.commons.httpclient.HttpMethodBase.readStatusLine(HttpMethodBase.java:1832)
        at org.apache.commons.httpclient.HttpMethodBase.readResponse(HttpMethodBase.java:1590)
        at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:995)
        at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:397)
        at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:170)
        at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396)
        at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:324)
        at com.companyname.mtix.sms.services.impl.message.SendTextMessage.sendTextMessage(SendTextMessage.java:127)
        at com.companyname.mtix.sms.services.MessageServiceImpl.sendTextMessage(MessageServiceImpl.java:125)
        at com.companyname.mtix.sms.services.remote.MessageServiceRemoteImpl.sendTextMessage(MessageServiceRemoteImpl.java:43)
        at sun.reflect.GeneratedMethodAccessor203.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.apache.axis.providers.java.RPCProvider.invokeMethod(RPCProvider.java:397)
        at org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvider.java:186)
        at org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:323)
        at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
        at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
        at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
        at org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:453)
        at org.apache.axis.server.AxisServer.invoke(AxisServer.java:281)
        at org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:699) …

我试图从套接字读取时出现以下错误.我做了readInt()对InputStream,并且我得到这个错误.仔细阅读文档,这表明连接的客户端部分关闭了连接.在这种情况下,我是服务器.

我可以访问客户端日志文件并且它没有关闭连接,事实上它的日志文件建议我关闭连接.那么有人知道为什么会这样吗？还有什么要检查的？当有可能达到阈值的本地资源时,是否会出现这种情况？

我注意到我有以下几行:

socket.setSoTimeout(10000);

就在之前readInt().这是一个原因(长篇故事),但只是好奇,是否存在可能导致指示错误的情况？我在我的IDE中运行了服务器,我碰巧让我的IDE卡在断点上,然后我注意到完全相同的错误开始出现在我自己的IDE中.

无论如何,只要提一下,希望不是红鲱鱼.:-(

我有一个WCF服务和一个Web应用程序.Web应用程序以连续的方式调用此WCF服务,即轮询.在我们的生产环境中,我很少收到此错误.因为,这是一个内部活动,用户不知道何时抛出此错误.

无法连接到 http://localhost/QAService/Service.svc.TCP错误代码10048:通常只允许使用每个套接字地址(协议/网络地址/端口)127.0.0.1:80.---> System.Net.WebException:无法连接到远程服务器---> System.Net.Sockets.SocketException:通常只允许使用每个套接字地址(协议/网络地址/端口)127.0.0.1 :80

我在dev/qa环境中重现这种行为时遇到了麻烦.我确保在try..catch..finally块中关闭客户端连接.仍然不明白是什么导致了这个问题..谁知道这个？

注意:我已经看过这个问题,但似乎没有回答我的问题,所以不是重复的问题.

我的LogCat读取:

08-19 09:29:01.964: WARN/System.err(311): java.net.SocketException: Permission denied
08-19 09:29:02.204: WARN/System.err(311):     at org.apache.harmony.luni.platform.OSNetworkSystem.createStreamSocketImpl(Native Method)
08-19 09:29:02.214: WARN/System.err(311):     at org.apache.harmony.luni.platform.OSNetworkSystem.createStreamSocket(OSNetworkSystem.java:186)
08-19 09:29:02.214: WARN/System.err(311):     at org.apache.harmony.luni.net.PlainSocketImpl.create(PlainSocketImpl.java:265)
08-19 09:29:02.224: WARN/System.err(311):     at java.net.Socket.checkClosedAndCreate(Socket.java:873)
08-19 09:29:02.224: WARN/System.err(311):     at java.net.Socket.connect(Socket.java:1020)
08-19 09:29:02.224: WARN/System.err(311):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:62)
08-19 09:29:02.224: WARN/System.err(311):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:88)
08-19 09:29:02.224: WARN/System.err(311):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHTTPConnection(HttpURLConnectionImpl.java:927)
08-19 09:29:02.224: WARN/System.err(311):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:909)
08-19 09:29:02.234: WARN/System.err(311):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:1152)
08-19 09:29:02.234: WARN/System.err(311):     at java.net.URL.openStream(URL.java:653)
08-19 09:29:02.244: WARN/System.err(311):     at around.lowell.Main.onCreate(Main.java:57)
08-19 09:29:02.244: WARN/System.err(311):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-19 09:29:02.244: WARN/System.err(311):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
08-19 09:29:02.244: …

我的应用程序需要通过http://127.0.0.1/...(localhost url)联系它正在处理的同一设备.

出于某种原因,当我到达那里有JSON内容的网站时,大约50%的时间(可能正好是50%),我得到例外:

java.net.SocketException:recvfrom失败:ECONNRESET(由对等方重置连接)

对于其他50%,我得到了非常好的结果.我试图进行民意调查(甚至民意调查之间的延迟很大),但我仍然得到同样奇怪的结果.

我搜索过互联网,也在这里,我不确定为什么会这样.对等方是否意味着客户端已经造成了这种情况？为什么会这样,我该如何处理？

一些网站说这是常见的事情,但我没有找到在这种情况下最好的事情.

Tomcat在Windows下运行webapp.几天之后(在非常低的负载下),标题中提到的异常开始出现在日志中,从那一点开始就无法建立新的连接,唯一的解决方法就是重启服务器.

环境:

• 最新的Tomcat 6
• Windows Server 2008 R2
• JDK 6更新30
• SQL Server 2008
• Kerberos身份验证

到目前为止收集的证据:

• netstat显示没有过多的连接数
• ProcessExplorer显示没有过多的打开文件句柄
• 系统主内存使用率是平均值
• JVM堆使用率是平均值
• 重启Tomcat并没有解决问题

开放式问题:

• 如果我们泄漏连接,它们不应该出现在netstat中吗？
• 不应该重启appserver解决问题,因为操作系统应该释放所有进程资源？
• 有没有办法将问题追溯到其起源？例如,安装监控软件,可能类似于lsof等？

我没有想法,任何提示赞赏!

我无法让应用程序使用JavaMail API以比以前更自动化的方式发送一些文件.我是Java和NetBeans的新手,但是已经用其他语言编程了,所以如果我对Java和NetBeans有点遗失,请原谅我.

我一直收到这个错误

java.net.SocketException:权限被拒绝:连接

尝试连接到本地邮件服务器时.我已经通过gmail的SMTP服务器使用相同的代码成功连接和发送邮件,只需更改用户名,密码和端口.我也能成功telnet到我们的服务器并从端口25获得220响应.我还有一个运行的批处理文件,它通过我们的本地服务器成功发送电子邮件.关于为什么我无法连接的任何想法或想法JavaMail？

这是发送电子邮件的代码.

源代码:

public void sendEmail(String customerNumber, ArrayList fileList){
   String from = "xxxx";
   String username = "xxxx";
   String to = "xxxx";
   String host = "10.1.1.6";
   String pwd = "xxxx";
   String port = "25";

   Properties props = System.getProperties();
   props.put("mail.smtp.host", host);
   props.put("mail.smtp.port", port);
   props.put("mail.smtp.user", username);
   props.put("mail.smtp.auth", "true");
   props.put("mail.smtp.starttls.enable", "true");
   props.put("mail.smtp.debug", "true");
   props.put("mail.smtp.socketFactory.port", port);
   props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
   props.put("mail.smtp.socketFactory.fallback", "false");

   Session session = Session.getInstance(props, null);
   session.setDebug(true);

   MimeMessage message = new MimeMessage(session);
   try{
       message.setFrom(new InternetAddress(from));
       message.setRecipients(Message.RecipientType.TO, to);
       message.setSubject("Electronic Invoices");
       BodyPart …

当我从服务器读取文件内容时,它返回以下错误消息:

Caused by: java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(Unknown Source)
at java.net.SocketOutputStream.write(Unknown Source)
at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:215)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:462)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:366)
at org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:240)
at org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:119)
at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:192)
at org.apache.coyote.Response.doWrite(Response.java:504)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:383)
... 28 more

我的servlet程序是

 response.setContentType("application/octet-stream");
 response.setHeader("Content-Disposition","attachment;filename="+filename);
 FileInputStream in = new FileInputStream(new File(filepath));
 ServletOutputStream output=response.getOutputStream();
 byte[] outputByte=new byte[4096];
 while(in.read(outputByte,0,4096)!=-1){
     output.write(outputByte,0,4096);//error indicates in this line
 }
 in.close();
 output.flush();
 output.close();

如何解决这个问题？

我正在运行多个工作线程(大约10个)来访问redis Q中的数据.
因为我正在使用Jedis Client的 infinte timeout .

Jedis jedis = pool.getResource();
jedis.getClient().setTimeoutInfinite();  

我仍然收到错误"无法从池中获取资源".堆栈跟踪如下所示.

redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool
at redis.clients.util.Pool.getResource(Pool.java:22)
at Workers.Worker1.met1(Worker1.java:124)
at Workers.Worker1.work(Worker1.java:108)
at org.gearman.impl.worker.WorkerConnectionController$3.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)  

Caused by: redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: connect timed out
at redis.clients.jedis.Connection.connect(Connection.java:124)
at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:54)
at redis.clients.jedis.BinaryJedis.connect(BinaryJedis.java:1657)
at redis.clients.jedis.JedisPool$JedisFactory.makeObject(JedisPool.java:63)
at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1188)
at redis.clients.util.Pool.getResource(Pool.java:20)
... 6 more  

Caused by: java.net.SocketTimeoutException: connect timed out
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) …