问题描述
我有一个示例项目,该项目使用QSslSocket
和QSslCertificate
从SSL证书(Qt 5.7,Windows 10)中获取信息. QSslSocket::supportsSsl()
函数返回false,并且在运行时出现这些错误:
I got a sample projct that uses QSslSocket
and QSslCertificate
to get information from a SSL certificate (Qt 5.7, Windows 10). QSslSocket::supportsSsl()
function returns false and I get these errors at runtime:
qt.network.ssl: QSslSocket: cannot call unresolved function SSLv23_client_method
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_CTX_new
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_library_init
qt.network.ssl: QSslSocket: cannot call unresolved function ERR_get_error
所以我编译了OpenSSL_1.1.0并将其链接到我的项目:
So I compiled OpenSSL_1.1.0 and linked it to my project:
INCLUDEPATH += . "C:/OpenSSL-Win32/include/" LIBS +=
-L"C:/OpenSSL-Win32/lib/" -llibcrypto -llibssl
但仍然是相同的错误.我下载了OpenSSL安装程序,并且仍然相同.
But still same errors. I downloaded OpenSSL installer and still the same.
奇怪的是,QSslSocket::sslLibraryBuildVersionString()
返回OpenSSL 1.0.2g 1 Mar 2016
,即使我编译并安装了OpenSSL_1.1.0.
Weird is QSslSocket::sslLibraryBuildVersionString()
returns OpenSSL 1.0.2g 1 Mar 2016
, even though I compiled and installed OpenSSL_1.1.0.
我知道我缺少一个简单的细节.请告诉我这是什么.谢谢.
I know I'm missing a simple detail. Please tell me what is it. Thanks.
推荐答案
来自文档:
QSslSocket::sslLibraryBuildVersionString()
返回编译时使用的SSL库的版本字符串.(强调我的)
QSslSocket::sslLibraryBuildVersionString()
Returns the version string of the SSL library in use at compile time. (emphasis mine)
您从中获得结果并不意味着Qt有权访问OpenSSL,而不仅仅是针对特定版本进行了编译.这样一来,您就可以知道如果动态链接(默认情况下),则应在运行时提供什么二进制兼容版本.
That you get a result from it doesn't mean that Qt has access to OpenSSL, only that it was compiled against a certain version. That lets you know what binary-compatible version you should provide at runtime if it's dynamically linked (as it is by default).
您要检查QSslSocket::sslLibraryVersionNumber()
-[...]运行时正在使用的库 (强调我的版本).
You want to check QSslSocket::sslLibraryVersionNumber()
- [...] the version of the library in use at run-time (emphasis mine).
Qt可能会尝试在PATH
中查找OpenSSL dll的副本,如果找不到,请在QCoreApplication::libraryPaths
给定的路径中查找.在尝试使用OpenSSL之前,您应该将OpenSSL dll的位置添加到任一位置.
Qt will presumably attempt to find a copy of OpenSSL dlls in PATH
, and if not, in the paths given by QCoreApplication::libraryPaths
. You should add the location of OpenSSL dlls to either one before attempting to use OpenSSL.
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