我正在开发一个使用XMPP服务器的Android聊天应用。PHP服务器已迁移至ejabber。
我的通知在所有场景中都能正常工作,但有一种情况下我会丢失XMPP消息,事实上我没有收到通知。
具体来说,我关闭WiFi或数据连接后,任何发送给我的通知都无法接收。当我重新打开WiFi或数据连接时,我也无法收到之前发送给我的消息。
我已经在后台实现了服务,可以始终保持XMPP连接处于活动状态。
当我关闭WiFi连接时,我会遇到这个错误。
java.net.SocketException: sendto failed: EPIPE (Broken pipe)
java.net.SocketException: recvfrom failed: ETIMEDOUT (Connection timed out)
at libcore.io.IoBridge.maybeThrowAfterSendto(IoBridge.java:506)
at libcore.io.IoBridge.sendto(IoBridge.java:475)
at java.net.PlainSocketImpl.write(PlainSocketImpl.java:508)
at java.net.PlainSocketImpl.access$100(PlainSocketImpl.java:46)
at java.net.PlainSocketImpl$PlainSocketOutputStream.write(PlainSocketImpl.java:270)
at java.io.OutputStreamWriter.flushBytes(OutputStreamWriter.java:167)
at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:158)
at java.io.BufferedWriter.flush(BufferedWriter.java:124)
at org.jivesoftware.smack.PacketWriter.writePackets(PacketWriter.java:286)
at org.jivesoftware.smack.PacketWriter.access$12(PacketWriter.java:270)
at org.jivesoftware.smack.PacketWriter$1.run(PacketWriter.java:137)
Caused by: libcore.io.ErrnoException: sendto failed: EPIPE (Broken pipe)
at libcore.io.Posix.sendtoBytes(Native Method)
at libcore.io.Posix.sendto(Posix.java:146)
at libcore.io.BlockGuardOs.sendto(BlockGuardOs.java:177)
at libcore.io.IoBridge.sendto(IoBridge.java:473)
... 9 more
at libcore.io.IoBridge.maybeThrowAfterRecvfrom(IoBridge.java:552)
at libcore.io.IoBridge.recvfrom(IoBridge.java:516)
at java.net.PlainSocketImpl.read(PlainSocketImpl.java:489)
at java.net.PlainSocketImpl.access$000(PlainSocketImpl.java:46)
at java.net.PlainSocketImpl$PlainSocketInputStream.read(PlainSocketImpl.java:241)
at java.io.InputStreamReader.read(InputStreamReader.java:244)
at java.io.BufferedReader.read(BufferedReader.java:310)
at org.jivesoftware.smack.XMPPConnection$AliveReader.read(XMPPConnection.java:1122)
at org.kxml2.io.KXmlParser.fillBuffer(KXmlParser.java:1496)
at org.kxml2.io.KXmlParser.peekType(KXmlParser.java:979)
at org.kxml2.io.KXmlParser.next(KXmlParser.java:346)
at org.kxml2.io.KXmlParser.next(KXmlParser.java:310)
at org.jivesoftware.smack.PacketReader.parsePackets(PacketReader.java:321)
at org.jivesoftware.smack.PacketReader.access$1(PacketReader.java:216)
at org.jivesoftware.smack.PacketReader$1.run(PacketReader.java:70)
Caused by: libcore.io.ErrnoException: recvfrom failed: ETIMEDOUT (Connection timed out)
at libcore.io.Posix.recvfromBytes(Native Method)
at libcore.io.Posix.recvfrom(Posix.java:131)
at libcore.io.BlockGuardOs.recvfrom(BlockGuardOs.java:164)
at libcore.io.IoBridge.recvfrom(IoBridge.java:513)
... 13 more