NSURLSessionNSURLConnection HTTP 加载在 iOS 9 上失败

找到解决方案:

在iOS9中，ATS在网络通话期间实施最佳实践，包括使用HTTPS.

From Apple documentation:

ATS prevents accidental disclosure, provides secure default behavior, and is easy to adopt. You should adopt ATS as soon as possible, regardless of whether you’re creating a new app or updating an existing one. If you’re developing a new app, you should use HTTPS exclusively. If you have an existing app, you should use HTTPS as much as you can right now, and create a plan for migrating the rest of your app as soon as possible.个

在测试版1中，目前没有办法在info.plist中定义这一点.解决方案是手动添加:

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

Update1: This is a temporary workaround until you're ready to adopt iOS9 ATS support.

Update2:有关更多详细信息，请参阅以下链接: http://ste.vn/2015/06/10/configuring-app-transport-security-ios-9-osx-10-11/个

如果您try 连接到仅具有TLS 1.0的主机(YOURHOST.COM)，则为Update3:

将这些添加到应用程序的信息中.普利斯特

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSExceptionDomains</key>
    <dict>
        <key>YOURHOST.COM</key>
        <dict>
            <key>NSIncludesSubdomains</key>
            <true/>
            <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
            <true/>
            <key>NSTemporaryExceptionMinimumTLSVersion</key>
            <string>1.0</string>
            <key>NSTemporaryExceptionRequiresForwardSecrecy</key>
            <false/>
        </dict>
    </dict>
</dict>