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Detect if afunix.h exists #2145

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May 24, 2025
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Detect if afunix.h exists #2145

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7 changes: 7 additions & 0 deletions httplib.h
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Original file line number Diff line number Diff line change
Expand Up @@ -192,8 +192,13 @@ using ssize_t = long;
#include <winsock2.h>
#include <ws2tcpip.h>

#if defined(__has_include)
#if __has_include(<afunix.h>)
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@p1-0tr this is not compatible with C++11.

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I know it only got standardised as of c++17, but has been supported by all major compilers before that. I've added an additional check that should protect against errors on compilers that do not support that macro.

// afunix.h uses types declared in winsock2.h, so has to be included after it.
#include <afunix.h>
#define CPPHTTPLIB_HAVE_AFUNIX_H 1
#endif
#endif

#ifndef WSA_FLAG_NO_HANDLE_INHERIT
#define WSA_FLAG_NO_HANDLE_INHERIT 0x80
Expand Down Expand Up @@ -3551,6 +3556,7 @@ socket_t create_socket(const std::string &host, const std::string &ip, int port,
hints.ai_flags = socket_flags;
}

#if !defined(_WIN32) || defined(CPPHTTPLIB_HAVE_AFUNIX_H)
if (hints.ai_family == AF_UNIX) {
const auto addrlen = host.length();
if (addrlen > sizeof(sockaddr_un::sun_path)) { return INVALID_SOCKET; }
Expand Down Expand Up @@ -3595,6 +3601,7 @@ socket_t create_socket(const std::string &host, const std::string &ip, int port,
}
return sock;
}
#endif

auto service = std::to_string(port);

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