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| author |  apolcyn <apolcyn@google.com> | 2018-07-30 13:49:09 -0700 |
|---|---|---|
| committer |  GitHub <noreply@github.com> | 2018-07-30 13:49:09 -0700 |
| commit | 8fc60d3f309ed53dddc4fcc911c880951a98e601 (patch) | |
| tree | aefb1ac001bdfd555d30512dd8066202fe5fa71b /src/core/lib/iomgr | |
| parent | a87b1fb3ef9859528f93d7792afaa121453d91c9 (diff) | |
| parent | 9896c641860a70e41b006a982e44f40bb3f41053 (diff) | |
Merge pull request #16163 from apolcyn/revert_revert_windows_breakage
Revert "Revert "Merge pull request #15797 from apolcyn/windows_compile_and_sort""
Diffstat (limited to 'src/core/lib/iomgr')
| -rw-r--r-- | src/core/lib/iomgr/socket_windows.cc | 29 | ||||
| -rw-r--r-- | src/core/lib/iomgr/socket_windows.h | 4 |
2 files changed, 33 insertions, 0 deletions
diff --git a/src/core/lib/iomgr/socket_windows.cc b/src/core/lib/iomgr/socket_windows.cc index 2e23409582..4ad31cb35d 100644 --- a/src/core/lib/iomgr/socket_windows.cc +++ b/src/core/lib/iomgr/socket_windows.cc @@ -36,6 +36,7 @@ #include "src/core/lib/iomgr/iomgr_internal.h" #include "src/core/lib/iomgr/pollset.h" #include "src/core/lib/iomgr/pollset_windows.h" +#include "src/core/lib/iomgr/sockaddr_windows.h" #include "src/core/lib/iomgr/socket_windows.h" grpc_winsocket* grpc_winsocket_create(SOCKET socket, const char* name) { @@ -148,4 +149,32 @@ void grpc_socket_become_ready(grpc_winsocket* socket, if (should_destroy) destroy(socket); } +static gpr_once g_probe_ipv6_once = GPR_ONCE_INIT; +static bool g_ipv6_loopback_available = false; + +static void probe_ipv6_once(void) { + SOCKET s = socket(AF_INET6, SOCK_STREAM, 0); + g_ipv6_loopback_available = 0; + if (s == INVALID_SOCKET) { + gpr_log(GPR_INFO, "Disabling AF_INET6 sockets because socket() failed."); + } else { + grpc_sockaddr_in6 addr; + memset(&addr, 0, sizeof(addr)); + addr.sin6_family = AF_INET6; + addr.sin6_addr.s6_addr[15] = 1; /* [::1]:0 */ + if (bind(s, reinterpret_cast<grpc_sockaddr*>(&addr), sizeof(addr)) == 0) { + g_ipv6_loopback_available = 1; + } else { + gpr_log(GPR_INFO, + "Disabling AF_INET6 sockets because ::1 is not available."); + } + closesocket(s); + } +} + +int grpc_ipv6_loopback_available(void) { + gpr_once_init(&g_probe_ipv6_once, probe_ipv6_once); + return g_ipv6_loopback_available; +} + #endif /* GRPC_WINSOCK_SOCKET */ diff --git a/src/core/lib/iomgr/socket_windows.h b/src/core/lib/iomgr/socket_windows.h index 7bd01eded5..b09b9da562 100644 --- a/src/core/lib/iomgr/socket_windows.h +++ b/src/core/lib/iomgr/socket_windows.h @@ -108,6 +108,10 @@ void grpc_socket_notify_on_read(grpc_winsocket* winsocket, void grpc_socket_become_ready(grpc_winsocket* winsocket, grpc_winsocket_callback_info* ci); +/* Returns true if this system can create AF_INET6 sockets bound to ::1. + The value is probed once, and cached for the life of the process. */ +int grpc_ipv6_loopback_available(void); + #endif #endif /* GRPC_CORE_LIB_IOMGR_SOCKET_WINDOWS_H */ |