JavaPNS使用与吐槽

http://autumnrain-zgq.iteye.com/blog/1743279

苹果平台开发的应用程序，不支持后台运行程序，所以苹果有一个推送服务在软件的一些信息推送给用户。
JAVA中，有一个开源软件，JavaPNS实现了Java平台中连接苹果服务器与推送消息的服务。但是在使用的过程中，有两点需要使用者注意一下，希望后续使用的同志们能避免我走过的覆辙。
1、一是向苹果的服务推送消息时，如果遇到无效的deviceToken,苹果会断开网络连接，而JavaPNS不会进行重连。苹果原文：
If you send a notification and APNs finds the notification malformed or otherwise unintelligible, it returns an error-response packet prior to disconnecting. (If there is no error, APNs doesn’t return anything.) Figure 5-3 depicts the format of the error-response packet.
2、JavaPNS是一条条发送通知的，但是对于大规模发送的生产环境，显然是不可以的，建议使用批量发送。苹果原文：
The binary interface employs a plain TCP socket for binary content that is streaming in nature. For optimum performance, you should batch multiple notifications in a single transmission over the interface, either explicitly or using a TCP/IP Nagle algorithm.

对于此，我对JavaAPNS的代码进行了改动，使其支持批量发送和苹果断开重连，但是有一个问题需要大家注意一下，在正常发送的情况下，苹果是不会向Socket中写任何数据的，需要等待其读超时，this.socket.getInputStream().read()，确订推送结果的正常。通过持续的向Socket中写数据，实现批量发送，调用flush方法时，完成一次批量发送。在PushNotificationManager增加如下方法：

Java代码

public List<ResponsePacket> sendNotification(List<PushedNotification> pnl) {
logger.info(psn + "RR批量推送时消息体的大小为：" + pnl.size());
List<ResponsePacket> failList = new ArrayList<ResponsePacket>();
if (pnl.size() == 0) {
return failList;
}
Set<Integer> sendSet = new HashSet<Integer>();
int counter = 0;
while (counter < pnl.size()) {
try {
this.socket.setSoTimeout(3000);
this.socket.setSendBufferSize(25600);
this.socket.setReceiveBufferSize(600);
for (; counter < pnl.size(); counter++) {
PushedNotification push = pnl.get(counter);
if (sendSet.contains(push.getIdentifier())) {
logger.warn("信息[" + push.getIdentifier() + "]已经被推送");
continue;
}
byte[] bytes = getMessage(push.getDevice().getToken(), push.getPayload(), push.getIdentifier(), push);
this.socket.getOutputStream().write(bytes);
// 考虑到重发的问题
// sendSet.add(push.getIdentifier());
}
this.socket.getOutputStream().flush();
// 等待回馈数据，比单个发送时延时长一点，否则将无法获取到回馈数据
this.socket.setSoTimeout(1000);
StringBuffer allResult = new StringBuffer();
ResponsePacket rp = new ResponsePacket();
int readCounter = 0;
// 处理读回写数据的异常
try {
logger.info(psn + "检查流数据是否可用:" + this.socket.getInputStream().available());
byte[] sid = new byte[4];// 发送标记
while (true) {
int value = this.socket.getInputStream().read();
if (value < 0) {
break;
}
readCounter++;
if (readCounter == 1) {
rp.setCommand(value);
}
if (readCounter == 2) {
rp.setStatus(value);
}
if (readCounter >= 3 && readCounter <= 6) {
sid[readCounter - 3] = (byte) value;
if (readCounter == 6) {
rp.setIdentifier(ByteBuffer.wrap(sid).getInt());
if (failList.contains(rp)) {
logger.error("错误返馈数据中已经包含当前数据，" + rp.getIdentifier());
}
failList.add(rp);
}
}
allResult.append(value + "_");
}
this.socket.getInputStream().close();
} catch (SocketTimeoutException ste) {
logger.debug(psn + "消息推送成功，无任何返回!", ste);
} catch (IOException e) {
logger.debug(psn + "消息推送成功，关闭连接流时出错!", e);
}
logger.info("苹果返回的数据为：" + allResult.toString());
if (readCounter >= 6) {
// 找到出错的地方
for (int i = 0; i < pnl.size(); i++) {
PushedNotification push = pnl.get(i);
if (push.getIdentifier() == rp.getIdentifier()) {
counter = i + 1;
break;
// 从出错的地方再次发送,
}
}
try {
this.createNewSocket();
} catch (Exception e) {
logger.warn("连接时出错,", e);
}
}
} catch (SSLHandshakeException she) {
// 握手出错，标记不加
logger.warn("SHE消息推送时出错,", she);
try {
this.createNewSocket();
} catch (Exception e) {
logger.warn("连接时出错,", e);
}
} catch (SocketException se) {
logger.warn("SE消息推送时出错", se);
counter++;
try {
this.createNewSocket();
} catch (Exception e) {
logger.warn("连接时出错,", e);
}
} catch (IOException e) {
logger.warn("IE消息推送时出错", e);
counter++;
} catch (Exception e) {
logger.warn("E消息推送时出错", e);
counter++;
}
if (counter >= pnl.size()) {
break;
}
}
return failList;
}

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2013-01-24 18:41
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16 楼 lixiangblue 2014-01-07

在javapns2.2 中，重发确实存在bug。但是我发现。在注释重发后，notifications的返回结果会变得非常不准确（虽然不注释也不准确），所以根据系统的需求，如果需要比较准确的返回结果，还是不注销重发比较好，如果系统偏重与推送功能，对推送结果没有很高的要求，注释掉重发代码可以修复重复推送的bug。期待在以后的javapns版本中修复重复推送的bug。

15 楼 zhanghua_1199 2013-07-22

在正常发送的情况下，苹果是不会向Socket中写任何数据的，需要等待其读超时。想问一下楼主，这个苹果读取超时是在哪看到的，能否给个链接？

14 楼 zhanghua_1199 2013-07-22

lz,,,,你的
持续写入数据，遇到无效的deviceToken苹果会断开连接，并返回相应的消息编号，这时需要重新连接，再次发送数据
博文体现在哪里？是从这里开始吗：
if (readCounter >= 6) {
// 找到出错的地方

如果是，lz可以去看看javapns2.2版本的
PushNotificationManager.stopConnection()这个方法。这里面实现了重发。望回复。

13 楼 shanjh2000 2013-07-09

请问，你的这个方法的输入参数： List<PushedNotification> pnl 怎么创建？

12 楼 autumnrain_zgq 2013-05-17

lsqwind 写道

rock 写道

PushQueue支持重连，
源码：

Java代码

private void sendNotification(PushedNotification notification, boolean closeAfter) throws CommunicationException {
try {
Device device = notification.getDevice();
Payload payload = notification.getPayload();
try {
payload.verifyPayloadIsNotEmpty();
} catch (IllegalArgumentException e) {
throw new PayloadIsEmptyException();
} catch (Exception e) {
}
if (notification.getIdentifier() <= 0) notification.setIdentifier(newMessageIdentifier());
if (!pushedNotifications.containsKey(notification.getIdentifier())) pushedNotifications.put(notification.getIdentifier(), notification);
int identifier = notification.getIdentifier();
String token = device.getToken();
// even though the BasicDevice constructor validates the token, we revalidate it in case we were passed another implementation of Device
BasicDevice.validateTokenFormat(token);
// PushedNotification pushedNotification = new PushedNotification(device, payload);
byte[] bytes = getMessage(token, payload, identifier, notification);
// pushedNotifications.put(pushedNotification.getIdentifier(), pushedNotification);
/* Special simulation mode to skip actual streaming of message */
boolean simulationMode = payload.getExpiry() == 919191;
boolean success = false;
BufferedReader in = new BufferedReader(new InputStreamReader(this.socket.getInputStream()));
int socketTimeout = getSslSocketTimeout();
if (socketTimeout > 0) this.socket.setSoTimeout(socketTimeout);
notification.setTransmissionAttempts(0);
// Keep trying until we have a success
while (!success) {
try {
logger.debug("Attempting to send notification: " + payload.toString() + "");
logger.debug(" to device: " + token + "");
notification.addTransmissionAttempt();
boolean streamConfirmed = false;
try {
if (!simulationMode) {
this.socket.getOutputStream().write(bytes);
streamConfirmed = true;
} else {
logger.debug("* Simulation only: would have streamed " + bytes.length + "-bytes message now..");
}
} catch (Exception e) {
if (e != null) {
if (e.toString().contains("certificate_unknown")) {
throw new InvalidCertificateChainException(e.getMessage());
}
}
throw e;
}
logger.debug("Flushing");
this.socket.getOutputStream().flush();
if (streamConfirmed) logger.debug("At this point, the entire " + bytes.length + "-bytes message has been streamed out successfully through the SSL connection");
success = true;
logger.debug("Notification sent on " + notification.getLatestTransmissionAttempt());
notification.setTransmissionCompleted(true);
} catch (IOException e) {
// throw exception if we surpassed the valid number of retry attempts
if (notification.getTransmissionAttempts() >= retryAttempts) {
logger.error("Attempt to send Notification failed and beyond the maximum number of attempts permitted");
notification.setTransmissionCompleted(false);
notification.setException(e);
logger.error("Delivery error", e);
throw e;
} else {
logger.info("Attempt failed (" + e.getMessage() + ")... trying again");
//Try again
try {
this.socket.close();
} catch (Exception e2) {
// do nothing
}
this.socket = connectionToAppleServer.getSSLSocket();
if (socketTimeout > 0) this.socket.setSoTimeout(socketTimeout);
}
}
}
} catch (CommunicationException e) {
throw e;
} catch (Exception ex) {
notification.setException(ex);
logger.error("Delivery error: " + ex);
try {
if (closeAfter) {
logger.error("Closing connection after error");
stopConnection();
}
} catch (Exception e) {
}
}
}

我也看到这段代码了。确实是有重发功能，默认重发次数是3次。请教下楼主@ autumnrain_zgq 跟你写的这个方法比有哪些需要注意的地方？

这个代码正常情况下没有问题，遇到无效的deviceToken就无法重新发送信息了，还有，他不是批量提交信息的，

11 楼 lsqwind 2013-05-15

rock 写道

PushQueue支持重连，
源码：

Java代码

private void sendNotification(PushedNotification notification, boolean closeAfter) throws CommunicationException {
try {
Device device = notification.getDevice();
Payload payload = notification.getPayload();
try {
payload.verifyPayloadIsNotEmpty();
} catch (IllegalArgumentException e) {
throw new PayloadIsEmptyException();
} catch (Exception e) {
}
if (notification.getIdentifier() <= 0) notification.setIdentifier(newMessageIdentifier());
if (!pushedNotifications.containsKey(notification.getIdentifier())) pushedNotifications.put(notification.getIdentifier(), notification);
int identifier = notification.getIdentifier();
String token = device.getToken();
// even though the BasicDevice constructor validates the token, we revalidate it in case we were passed another implementation of Device
BasicDevice.validateTokenFormat(token);
// PushedNotification pushedNotification = new PushedNotification(device, payload);
byte[] bytes = getMessage(token, payload, identifier, notification);
// pushedNotifications.put(pushedNotification.getIdentifier(), pushedNotification);
/* Special simulation mode to skip actual streaming of message */
boolean simulationMode = payload.getExpiry() == 919191;
boolean success = false;
BufferedReader in = new BufferedReader(new InputStreamReader(this.socket.getInputStream()));
int socketTimeout = getSslSocketTimeout();
if (socketTimeout > 0) this.socket.setSoTimeout(socketTimeout);
notification.setTransmissionAttempts(0);
// Keep trying until we have a success
while (!success) {
try {
logger.debug("Attempting to send notification: " + payload.toString() + "");
logger.debug(" to device: " + token + "");
notification.addTransmissionAttempt();
boolean streamConfirmed = false;
try {
if (!simulationMode) {
this.socket.getOutputStream().write(bytes);
streamConfirmed = true;
} else {
logger.debug("* Simulation only: would have streamed " + bytes.length + "-bytes message now..");
}
} catch (Exception e) {
if (e != null) {
if (e.toString().contains("certificate_unknown")) {
throw new InvalidCertificateChainException(e.getMessage());
}
}
throw e;
}
logger.debug("Flushing");
this.socket.getOutputStream().flush();
if (streamConfirmed) logger.debug("At this point, the entire " + bytes.length + "-bytes message has been streamed out successfully through the SSL connection");
success = true;
logger.debug("Notification sent on " + notification.getLatestTransmissionAttempt());
notification.setTransmissionCompleted(true);
} catch (IOException e) {
// throw exception if we surpassed the valid number of retry attempts
if (notification.getTransmissionAttempts() >= retryAttempts) {
logger.error("Attempt to send Notification failed and beyond the maximum number of attempts permitted");
notification.setTransmissionCompleted(false);
notification.setException(e);
logger.error("Delivery error", e);
throw e;
} else {
logger.info("Attempt failed (" + e.getMessage() + ")... trying again");
//Try again
try {
this.socket.close();
} catch (Exception e2) {
// do nothing
}
this.socket = connectionToAppleServer.getSSLSocket();
if (socketTimeout > 0) this.socket.setSoTimeout(socketTimeout);
}
}
}
} catch (CommunicationException e) {
throw e;
} catch (Exception ex) {
notification.setException(ex);
logger.error("Delivery error: " + ex);
try {
if (closeAfter) {
logger.error("Closing connection after error");
stopConnection();
}
} catch (Exception e) {
}
}
}

我也看到这段代码了。确实是有重发功能，默认重发次数是3次。请教下楼主@ autumnrain_zgq 跟你写的这个方法比有哪些需要注意的地方？

10 楼 autumnrain_zgq 2013-05-09

sorehead 写道

autumnrain_zgq 写道

sorehead 写道

楼主可以贴一份完整的代码吗，我也在纠结这个问题。

下载下来JavaAPNS源代码项目，在PushNotificationManager这个类中增加我文章中增加的那个方法就可以了。其它地方我也没有改的，

this.createNewSocket(); 都做了些什么事情？只是重新建立一个socket连接吗？方便贴出这个方法吗？

Java代码

public void createNewSocket() throws SocketException, KeystoreException, CommunicationException {
logger.info(psn + "创建新的Socke的连接");
if (this.socket != null) {
try {
socket.close();
} catch (Exception e) {
logger.info("关闭Socket连接时出错...", e);
}
}
this.socket = connectionToAppleServer.getSSLSocket();
this.socket.setSoTimeout(3000);
this.socket.setKeepAlive(true);
}

9 楼 sorehead 2013-05-08

autumnrain_zgq 写道

sorehead 写道

楼主可以贴一份完整的代码吗，我也在纠结这个问题。

下载下来JavaAPNS源代码项目，在PushNotificationManager这个类中增加我文章中增加的那个方法就可以了。其它地方我也没有改的，

this.createNewSocket(); 都做了些什么事情？只是重新建立一个socket连接吗？方便贴出这个方法吗？

8 楼 autumnrain_zgq 2013-05-08

sorehead 写道

楼主可以贴一份完整的代码吗，我也在纠结这个问题。

下载下来JavaAPNS源代码项目，在PushNotificationManager这个类中增加我文章中增加的那个方法就可以了。其它地方我也没有改的，

7 楼 sorehead 2013-05-08

楼主可以贴一份完整的代码吗，我也在纠结这个问题。

6 楼 rock 2013-04-24

PushQueue支持重连，
源码：

Java代码

private void sendNotification(PushedNotification notification, boolean closeAfter) throws CommunicationException {
try {
Device device = notification.getDevice();
Payload payload = notification.getPayload();
try {
payload.verifyPayloadIsNotEmpty();
} catch (IllegalArgumentException e) {
throw new PayloadIsEmptyException();
} catch (Exception e) {
}
if (notification.getIdentifier() <= 0) notification.setIdentifier(newMessageIdentifier());
if (!pushedNotifications.containsKey(notification.getIdentifier())) pushedNotifications.put(notification.getIdentifier(), notification);
int identifier = notification.getIdentifier();
String token = device.getToken();
// even though the BasicDevice constructor validates the token, we revalidate it in case we were passed another implementation of Device
BasicDevice.validateTokenFormat(token);
// PushedNotification pushedNotification = new PushedNotification(device, payload);
byte[] bytes = getMessage(token, payload, identifier, notification);
// pushedNotifications.put(pushedNotification.getIdentifier(), pushedNotification);
/* Special simulation mode to skip actual streaming of message */
boolean simulationMode = payload.getExpiry() == 919191;
boolean success = false;
BufferedReader in = new BufferedReader(new InputStreamReader(this.socket.getInputStream()));
int socketTimeout = getSslSocketTimeout();
if (socketTimeout > 0) this.socket.setSoTimeout(socketTimeout);
notification.setTransmissionAttempts(0);
// Keep trying until we have a success
while (!success) {
try {
logger.debug("Attempting to send notification: " + payload.toString() + "");
logger.debug(" to device: " + token + "");
notification.addTransmissionAttempt();
boolean streamConfirmed = false;
try {
if (!simulationMode) {
this.socket.getOutputStream().write(bytes);
streamConfirmed = true;
} else {
logger.debug("* Simulation only: would have streamed " + bytes.length + "-bytes message now..");
}
} catch (Exception e) {
if (e != null) {
if (e.toString().contains("certificate_unknown")) {
throw new InvalidCertificateChainException(e.getMessage());
}
}
throw e;
}
logger.debug("Flushing");
this.socket.getOutputStream().flush();
if (streamConfirmed) logger.debug("At this point, the entire " + bytes.length + "-bytes message has been streamed out successfully through the SSL connection");
success = true;
logger.debug("Notification sent on " + notification.getLatestTransmissionAttempt());
notification.setTransmissionCompleted(true);
} catch (IOException e) {
// throw exception if we surpassed the valid number of retry attempts
if (notification.getTransmissionAttempts() >= retryAttempts) {
logger.error("Attempt to send Notification failed and beyond the maximum number of attempts permitted");
notification.setTransmissionCompleted(false);
notification.setException(e);
logger.error("Delivery error", e);
throw e;
} else {
logger.info("Attempt failed (" + e.getMessage() + ")... trying again");
//Try again
try {
this.socket.close();
} catch (Exception e2) {
// do nothing
}
this.socket = connectionToAppleServer.getSSLSocket();
if (socketTimeout > 0) this.socket.setSoTimeout(socketTimeout);
}
}
}
} catch (CommunicationException e) {
throw e;
} catch (Exception ex) {
notification.setException(ex);
logger.error("Delivery error: " + ex);
try {
if (closeAfter) {
logger.error("Closing connection after error");
stopConnection();
}
} catch (Exception e) {
}
}
}

5 楼 autumnrain_zgq 2013-04-03

鐜嬫旦写道

pns 2.2版本不是支持群发嘛？

楼主，看到尽快回复下，，最近也在整这个

你好，是不支持群发的，群发的情况下，是在一个连接打开的情况下，持续写入数据，遇到无效的deviceToken苹果会断开连接，并返回相应的消息编号，这时需要重新连接，再次发送数据。博文的代码中这是这样实现的，

4 楼鐜嬫旦 2013-04-02

鐜嬫旦写道

pns 2.2版本不是支持群发嘛？

楼主，看到尽快回复下，，最近也在整这个

3 楼鐜嬫旦 2013-04-02

pns 2.2版本不是支持群发嘛？

2 楼 autumnrain_zgq 2013-03-27

linbaoji 写道

请问你的 JavaPNS 版本是什么啊！？？
谢谢1

你好，我查看一下，版本是：２.２

1 楼 linbaoji 2013-03-20

请问你的 JavaPNS 版本是什么啊！？？
谢谢1

JavaPNS使用与吐槽

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