diff options
Diffstat (limited to 'network_io')
| -rw-r--r-- | network_io/win32/sockets.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/network_io/win32/sockets.c b/network_io/win32/sockets.c index be7ddcbde..9c30f70eb 100644 --- a/network_io/win32/sockets.c +++ b/network_io/win32/sockets.c @@ -24,6 +24,13 @@ #include "apr_arch_inherit.h" #include "apr_arch_misc.h" +/* Borrow the definition of SOMAXCONN_HINT() from Windows SDK 8, + * in case the SDK we are building against doesn't have it. + */ +#ifndef SOMAXCONN_HINT +#define SOMAXCONN_HINT(b) (-(b)) +#endif + static char generic_inaddr_any[16] = {0}; /* big enough for IPv4 or IPv6 */ static apr_status_t socket_cleanup(void *sock) @@ -223,7 +230,21 @@ APR_DECLARE(apr_status_t) apr_socket_bind(apr_socket_t *sock, APR_DECLARE(apr_status_t) apr_socket_listen(apr_socket_t *sock, apr_int32_t backlog) { - if (listen(sock->socketdes, backlog) == SOCKET_ERROR) + int backlog_val; + + if (apr_os_level >= APR_WIN_8) { + /* Starting from Windows 8, listen() accepts a special SOMAXCONN_HINT() + * arg that allows setting the listen backlog value to a larger + * value than the predefined Winsock 2 limit (several hundred). + * https://blogs.msdn.microsoft.com/winsdk/2015/06/01/winsocks-listen-backlog-offers-more-flexibility-in-windows-8/ + */ + backlog_val = SOMAXCONN_HINT(backlog); + } + else { + backlog_val = backlog; + } + + if (listen(sock->socketdes, backlog_val) == SOCKET_ERROR) return apr_get_netos_error(); else return APR_SUCCESS; |