使用 poco 库构建 HTTPS 服务器时出错答案

【问题标题】：Erros while building HTTPS Server using poco library使用 poco 库构建 HTTPS 服务器时出错
【发布时间】：2016-03-23 21:25:24
【问题描述】：

我正在尝试使用 poco 库创建简单的 HTTPS 服务器。我的 SSL 层有问题，因为我无法正确初始化它。这是我的代码：

#ifdef SSL
    // initialize SSL
    Poco::Net::initializeSSL();

    Poco::SharedPtr<Poco::Net::InvalidCertificateHandler> pCert =
        new Poco::Net::ConsoleCertificateHandler(false);
    Poco::Net::Context::Ptr pContext =
        new Poco::Net::Context(
            Poco::Net::Context::SERVER_USE,
            "",
            "server.pem",
            "",
            Poco::Net::Context::VERIFY_NONE,
            9,
            false,
            "ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH");
    Poco::Net::SSLManager::instance().initializeClient(0, pCert, pContext);
#endif //SSL
    if (port == UNKNOWN_PORT)
        return 1;
    // set-up a server socket
#ifdef SSL
    SecureServerSocket svs(port, 64, pContext);
#else
    ServerSocket svs(port);
#endif //SSL
    // set-up a HTTPServer instance
    Poco::Net::HTTPServer srv(new RequestHandlerFactory, svs, new HTTPServerParams);

当我尝试使用 MSVC2015 构建它时，它会出现很多错误（见下文）。 poco-libraries 提供的构建示例不会出现任何错误。

仅使用SecureServerSocket 和initializeSSL，不使用其余部分会产生未处理的异常。

为什么我会收到未定义符号的编译错误，我该如何解决？

1>------ Build started: Project: PocoNetServer, Configuration: Release Win32 ------
1>  HTTPServer.cpp
1>D:\Programming\OpenSSL-Win32\include\openssl/ossl_typ.h(178): warning C4091: 'typedef ': ignored on left of 'ssl_st' when no variable is declared
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(390): error C2065: 's': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(391): error C2059: syntax error: 'const'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(393): error C2065: 's': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(393): error C2062: type 'void' unexpected
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(402): error C2065: 's': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(402): error C2062: type 'unsigned int' unexpected
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(406): error C2065: 's': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(406): error C2062: type 'unsigned int' unexpected
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(409): error C2065: 's': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(409): error C2062: type 'unsigned int' unexpected
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(440): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(441): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(442): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(443): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(444): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(445): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(446): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(447): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(448): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(449): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(450): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(451): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(453): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(455): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(456): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(457): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(461): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(468): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(837): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(838): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(839): error C2065: 'cb': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(839): error C2062: type 'int' unexpected
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(853): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(855): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(857): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(869): error C2065: 's': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(871): error C2065: 'ctx': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(873): error C2065: 's': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(873): error C2062: type 'int' unexpected
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(874): error C2065: 's': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(874): error C2062: type 'unsigned char' unexpected
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(875): error C2065: 's': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(876): error C2065: 's': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(876): error C2062: type 'unsigned char' unexpected
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(905): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(999): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1002): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1006): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1021): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1040): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1076): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1083): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1090): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1094): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1101): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1106): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1131): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1138): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1162): error C2059: syntax error: '*'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1247): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1249): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1252): error C2143: syntax error: missing ')' before '('
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1252): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1252): error C2065: 'x509': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1252): error C2275: 'X509': illegal use of this type as an expression
1>  D:\Programming\OpenSSL-Win32\include\openssl/ossl_typ.h(154): note: see declaration of 'X509'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1253): error C2065: 'pkey': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1253): error C2275: 'EVP_PKEY': illegal use of this type as an expression
1>  D:\Programming\OpenSSL-Win32\include\openssl/ossl_typ.h(133): note: see declaration of 'EVP_PKEY'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1253): error C2206: 'SSL_CTX_set_client_cert_cb': typedef cannot be used for function definition
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1253): error C2059: syntax error: ')'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1254): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1254): error C2065: 'x509': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1254): error C2275: 'X509': illegal use of this type as an expression
1>  D:\Programming\OpenSSL-Win32\include\openssl/ossl_typ.h(154): note: see declaration of 'X509'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1255): error C2065: 'pkey': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1255): error C2275: 'EVP_PKEY': illegal use of this type as an expression
1>  D:\Programming\OpenSSL-Win32\include\openssl/ossl_typ.h(133): note: see declaration of 'EVP_PKEY'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1255): error C2206: 'SSL_CTX_get_client_cert_cb': typedef cannot be used for function definition
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1260): error C2143: syntax error: missing ')' before '('
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1260): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1262): error C2062: type 'unsigned char' unexpected
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1264): error C2059: syntax error: ')'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1266): error C2143: syntax error: missing ')' before '('
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1266): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1268): error C2062: type 'unsigned char' unexpected
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1270): error C2059: syntax error: ')'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1273): error C2143: syntax error: missing ')' before '('
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1273): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1274): error C2059: syntax error: 'const'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1277): error C2059: syntax error: ')'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1279): error C2143: syntax error: missing ')' before '('
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1279): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1280): error C2062: type 'unsigned char' unexpected
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1284): error C2059: syntax error: ')'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1285): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1302): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1302): error C2059: syntax error: 'const'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1305): error C2143: syntax error: missing ')' before '('
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1305): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1306): error C2059: syntax error: 'const'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1310): error C2059: syntax error: ')'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1311): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1322): error C2143: syntax error: missing ')' before '('
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1323): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1324): error C2059: syntax error: 'const'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1337): error C2059: syntax error: ')'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1338): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1339): error C2065: 'psk_client_callback': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1340): error C2065: 'ssl': undeclared identifier
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1341): error C2059: syntax error: 'const'
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1356): error C2143: syntax error: missing ')' before '('
1>D:\Programming\OpenSSL-Win32\include\openssl/ssl.h(1357): fatal error C1003: error count exceeds 100; stopping compilation

========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

【问题讨论】：

标签： c++ windows openssl poco-libraries

【解决方案1】：

从您的代码看来，您有一个名为 SSL 的宏。这恰好是 OpenSSL 定义的一种类型，从 ossl_typ.h 的第 178 行开始：

typedef struct ssl_st SSL;

我建议使用不同的宏名称。

【讨论】：

很好，理查德。请允许我成为第一个投赞成票的人:)
非常丰富的答案，我是第三个赞成的。我在 poco 有一个类似的问题，stackoverflow.com/questions/36771435/…。你能看到吗？