【发布时间】：2016-08-05 07:34:26
【问题描述】：
我已经设置了一个运行 Ubuntu 15.10 x64 的 linux 服务器。我已经设置了 php/openssl/curl 一起使用 HTTP/2 发送。我正在测试的 PHP 脚本如下。基本上，我正在发送两条推送消息，它们都使用相同的 curl 句柄，以便按照 Apple 的建议保持连接打开。第一条消息通过并很好地显示在我的设备上，但是当它尝试发送第二条消息时，我在“SSL”之后收到错误“Unknown SSL protocol error in connection to api.development.push.apple.com:443”重用会话 ID”。有人对可能出现的问题有任何建议吗？有人可以试试这个脚本，如果他们遇到同样的事情，请告诉我？
以下是我服务器的版本打印输出：
PHP
PHP 7.0.5-2+deb.sury.org~wily+1 (cli) ( NTS )
Copyright (c) 1997-2016 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies
with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2016, by Zend Technologies
OpenSSL
OpenSSL 1.0.2d 9 Jul 2015
卷曲
curl 7.48.0 (x86_64-pc-linux-gnu) libcurl/7.48.0 OpenSSL/1.0.2d zlib/1.2.8 libidn/1.28 nghttp2/1.10.0-DEV librtmp/2.3
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp smb smbs smtp smtps telnet tftp
Features: IDN IPv6 Largefile NTLM NTLM_WB SSL libz TLS-SRP HTTP2 UnixSockets
PHP 代码：
<?php
$ch = curl_init();
$device_token = 'TOKEN HERE';
$pem_file = 'YOURFILE.pem';
$pem_secret = 'PEM PASS';
$apns_topic = 'com.YOURTOPIC';
//curl_setopt($ch, CURLOPT_SSLVERSION, 6);
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2_0);
curl_setopt($ch, CURLOPT_HTTPHEADER, array("apns-topic: $apns_topic"));
curl_setopt($ch, CURLOPT_SSLCERT, $pem_file);
curl_setopt($ch, CURLOPT_SSLCERTPASSWD, $pem_secret);
curl_setopt($ch, CURLOPT_VERBOSE , true);
echo "Try 1 ================================================" . PHP_EOL;
//setup and send first push message
$url = "https://api.development.push.apple.com/3/device/$device_token";
curl_setopt($ch, CURLOPT_URL, "{$url}");
$sample_alert = '{"aps":{"alert":"hi #1","sound":"default"}}';
curl_setopt($ch, CURLOPT_POSTFIELDS, $sample_alert);
$response = curl_exec($ch);
$httpcode = curl_getinfo($ch);
//var_dump($response);
//var_dump($httpcode);
echo "Try 2 ================================================" . PHP_EOL;
//setup and send second push message
$url = "https://api.development.push.apple.com/3/device/$device_token";
curl_setopt($ch, CURLOPT_URL, "{$url}");
$sample_alert = '{"aps":{"alert":"hi #2","sound":"default"}}';
curl_setopt($ch, CURLOPT_POSTFIELDS, $sample_alert);
$response = curl_exec($ch);
$httpcode = curl_getinfo($ch);
//var_dump($response);
//var_dump($httpcode);
curl_close($ch);
使用 curl verbose 运行上述脚本的输出（个人项目替换为 XXXXX）：
Try 1 ================================================
* Trying 17.110.227.100...
* Connected to api.development.push.apple.com (17.110.227.100) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* successfully set certificate verify locations:
* CAfile: /etc/ssl/certs/ca-certificates.crt
CApath: none
* SSL connection using TLSv1.2 / XXXXXXXXXXXXXXXXXXXXXXXXXXX
* ALPN, server accepted to use h2
* Server certificate:
* subject: CN=api.development.push.apple.com; OU=management:idms.group.533599; O=Apple Inc.; ST=California; C=US
* start date: Jun 19 01:49:43 2015 GMT
* expire date: Jul 18 01:49:43 2017 GMT
* subjectAltName: host "api.development.push.apple.com" matched cert's "api.development.push.apple.com"
* issuer: CN=Apple IST CA 2 - G1; OU=Certification Authority; O=Apple Inc.; C=US
* SSL certificate verify ok.
* Using HTTP2, server supports multi-use
* Connection state changed (HTTP/2 confirmed)
* TCP_NODELAY set
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* Using Stream ID: 1 (easy handle 0x555e84417f80)
> POST /3/device/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
HTTP/1.1
Host: api.development.push.apple.com
Accept: */*
apns-topic: com.XXXXXXX.XXXXXXXXXXXXXXXXXX
Content-Length: 43
Content-Type: application/x-www-form-urlencoded
* Connection state changed (MAX_CONCURRENT_STREAMS updated)!
* We are completely uploaded and fine
< HTTP/2.0 200
< apns-id:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
<
* Connection #0 to host api.development.push.apple.com left intact
Try 2 ================================================
* Found bundle for host api.development.push.apple.com: 0x555e8442afb0 [can multiplex]
* Hostname api.development.push.apple.com was found in DNS cache
* Trying 17.110.227.100...
* Connected to api.development.push.apple.com (17.110.227.100) port 443 (#1)
* ALPN, offering h2
* ALPN, offering http/1.1
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* successfully set certificate verify locations:
* CAfile: /etc/ssl/certs/ca-certificates.crt
CApath: none
* SSL re-using session ID
* Unknown SSL protocol error in connection to api.development.push.apple.com:443
* Closing connection 1
【问题讨论】：
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已解决：对于任何想知道如何解决此问题的人，我不得不降级到 7.47.1 - 请参阅下面已接受答案中的评论主题
标签： apple-push-notifications http2