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e_winsock.h revision 1.1.1.2 
      1 /*
      2  * Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License 2.0 (the "License").  You may not use
      5  * this file except in compliance with the License.  You can obtain a copy
      6  * in the file LICENSE in the source distribution or at
      7  * https://www.openssl.org/source/license.html
      8  */
      9 
     10 #ifndef OSSL_E_WINSOCK_H
     11 #define OSSL_E_WINSOCK_H
     12 #pragma once
     13 
     14 #ifdef WINDOWS
     15 #if !defined(_WIN32_WCE) && !defined(_WIN32_WINNT)
     16 /*
     17  * Defining _WIN32_WINNT here in e_winsock.h implies certain "discipline."
     18  * Most notably we ought to check for availability of each specific
     19  * routine that was introduced after denoted _WIN32_WINNT with
     20  * GetProcAddress(). Normally newer functions are masked with higher
     21  * _WIN32_WINNT in SDK headers. So that if you wish to use them in
     22  * some module, you'd need to override _WIN32_WINNT definition in
     23  * the target module in order to "reach for" prototypes, but replace
     24  * calls to new functions with indirect calls. Alternatively it
     25  * might be possible to achieve the goal by /DELAYLOAD-ing .DLLs
     26  * and check for current OS version instead.
     27  */
     28 #define _WIN32_WINNT 0x0501
     29 #endif
     30 #if defined(_WIN32_WINNT) || defined(_WIN32_WCE)
     31 /*
     32  * Just like defining _WIN32_WINNT including winsock2.h implies
     33  * certain "discipline" for maintaining [broad] binary compatibility.
     34  * As long as structures are invariant among Winsock versions,
     35  * it's sufficient to check for specific Winsock2 API availability
     36  * at run-time [DSO_global_lookup is recommended]...
     37  */
     38 #include <winsock2.h>
     39 #include <ws2tcpip.h>
     40 /*
     41  * Clang-based C++Builder 10.3.3 toolchains cannot find C inline
     42  * definitions at link-time.  This header defines WspiapiLoad() as an
     43  * __inline function.  https://quality.embarcadero.com/browse/RSP-33806
     44  */
     45 #if !defined(__BORLANDC__) || !defined(__clang__)
     46 #include <wspiapi.h>
     47 #endif
     48 /* yes, they have to be #included prior to <windows.h> */
     49 #endif
     50 #include <windows.h>
     51 #endif
     52 #endif /* !(OSSL_E_WINSOCK_H) */
     53