diff options
Diffstat (limited to 'src/helper/log.c')
-rw-r--r-- | src/helper/log.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/helper/log.c b/src/helper/log.c index d65430c..8f48b92 100644 --- a/src/helper/log.c +++ b/src/helper/log.c @@ -454,3 +454,28 @@ void busy_sleep(uint64_t ms) */ } } + +/* Maximum size of socket error message retreived from operation system */ +#define MAX_SOCKET_ERR_MSG_LENGTH 256 + +/* Provide log message for the last socket error. + Uses errno on *nix and WSAGetLastError() on Windows */ +void log_socket_error(const char *socket_desc) +{ + int error_code; +#ifdef _WIN32 + error_code = WSAGetLastError(); + char error_message[MAX_SOCKET_ERR_MSG_LENGTH]; + error_message[0] = '\0'; + DWORD retval = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, error_code, 0, + error_message, MAX_SOCKET_ERR_MSG_LENGTH, NULL); + error_message[MAX_SOCKET_ERR_MSG_LENGTH - 1] = '\0'; + const bool have_message = (retval != 0) && (error_message[0] != '\0'); + LOG_ERROR("Error on socket '%s': WSAGetLastError==%d%s%s.", socket_desc, error_code, + (have_message ? ", message: " : ""), + (have_message ? error_message : "")); +#else + error_code = errno; + LOG_ERROR("Error on socket '%s': errno==%d, message: %s.", socket_desc, error_code, strerror(error_code)); +#endif +} |