小编Yas*_*rma的帖子

我正在开发一些不需要在App Store上的东西,所以我没有使用私有API来满足我的需求的问题我正在尝试使用MobileWiFi. framework to read the RSSI value for the wireless network the phone is currently connected to. I've included thehttps://github.com/Cykey/ios-reversed -headers/tree/c613e45f3ee5ad9f85ec7d43906cf69ee812ec6a/MobileWiFi`标题并使用桥接头将它们包含在我的swift项目中并编写如下代码.请原谅,我是新手.

import SystemConfiguration.CaptiveNetwork
typealias _WiFiManagerClientCreate = @convention(c) (CFAllocator, CInt) -> UnsafeRawPointer
typealias _WiFiManagerClientCopyDevices = @convention(c) (UnsafeRawPointer) -> CFArray
typealias _WiFiDeviceClientCopyProperty = @convention(c) (UnsafeRawPointer, CFString) -> CFPropertyList

if let libHandle = dlopen (Paths.ipConfiguration, RTLD_LAZY) {
        result = libHandle.debugDescription

        let _createManagerPtr = dlsym(libHandle, "WiFiManagerClientCreate")
        let _clientCopyDevicesPtr = dlsym(libHandle, "WiFiManagerClientCopyDevices")
        let _clientCopyPropertyPtr = dlsym(libHandle, "WiFiDeviceClientCopyProperty")

        if (_createManagerPtr != nil) …

我正在尝试连接到在 Amazon EC2 服务器上运行的 postgres 数据库。我知道服务器配置正确，因为我可以从 pgadmin 访问它并作为 intellij 中的数据源。

当仅使用 jsch 时，我还可以从程序中连接到服务器 shell，并直接使用 jdbc 连接到另一个数据库，但是一旦我尝试通过 ssh 隧道与 jsch 连接到我的 postgres 实例，我就会遇到这个奇怪的错误无法诊断：

org.postgresql.util.PSQLException: The connection attempt failed.
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:262)
at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:67)
at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:216)
at org.postgresql.Driver.makeConnection(Driver.java:406)
at org.postgresql.Driver.connect(Driver.java:274)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:208)
at EnumStreamer.main(EnumStreamer.java:38)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: java.io.EOFException
at org.postgresql.core.PGStream.ReceiveChar(PGStream.java:285)
at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:411)
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:208)
... 12 more

我用来连接的代码如下：

 System.out.println("Connecting...");
        session = secConnect.getSesssion();
        UserInfo ui = new uInfo();
        session.setUserInfo(ui);
        session.connect();
        session.setPortForwardingL(5432,secConnect.getHost(),5432);
        System.out.println("SSH …