winhttp.h: Add WinHTTP error codes.

include/winhttp.h

@@ -128,6 +128,41 @@ typedef int INTERNET_SCHEME, *LPINTERNET_SCHEME;
 #define WINHTTP_NO_ADDITIONAL_HEADERS   NULL
 #define WINHTTP_NO_REQUEST_DATA         NULL
 
+/* WinHTTP error codes */
+#define WINHTTP_ERROR_BASE                         12000
+#define ERROR_WINHTTP_OUT_OF_HANDLES               (WINHTTP_ERROR_BASE + 1)
+#define ERROR_WINHTTP_TIMEOUT                      (WINHTTP_ERROR_BASE + 2)
+#define ERROR_WINHTTP_INTERNAL_ERROR               (WINHTTP_ERROR_BASE + 4)
+#define ERROR_WINHTTP_INVALID_URL                  (WINHTTP_ERROR_BASE + 5)
+#define ERROR_WINHTTP_UNRECOGNIZED_SCHEME          (WINHTTP_ERROR_BASE + 6)
+#define ERROR_WINHTTP_NAME_NOT_RESOLVED            (WINHTTP_ERROR_BASE + 7)
+#define ERROR_WINHTTP_INVALID_OPTION               (WINHTTP_ERROR_BASE + 9)
+#define ERROR_WINHTTP_OPTION_NOT_SETTABLE          (WINHTTP_ERROR_BASE + 11)
+#define ERROR_WINHTTP_SHUTDOWN                     (WINHTTP_ERROR_BASE + 12)
+#define ERROR_WINHTTP_LOGIN_FAILURE                (WINHTTP_ERROR_BASE + 15)
+#define ERROR_WINHTTP_OPERATION_CANCELLED          (WINHTTP_ERROR_BASE + 17)
+#define ERROR_WINHTTP_INCORRECT_HANDLE_TYPE        (WINHTTP_ERROR_BASE + 18)
+#define ERROR_WINHTTP_INCORRECT_HANDLE_STATE       (WINHTTP_ERROR_BASE + 19)
+#define ERROR_WINHTTP_CANNOT_CONNECT               (WINHTTP_ERROR_BASE + 29)
+#define ERROR_WINHTTP_CONNECTION_ERROR             (WINHTTP_ERROR_BASE + 30)
+#define ERROR_WINHTTP_RESEND_REQUEST               (WINHTTP_ERROR_BASE + 32)
+#define ERROR_WINHTTP_CLIENT_AUTH_CERT_NEEDED      (WINHTTP_ERROR_BASE + 44)
+#define ERROR_WINHTTP_CANNOT_CALL_BEFORE_OPEN      (WINHTTP_ERROR_BASE + 100)
+#define ERROR_WINHTTP_CANNOT_CALL_BEFORE_SEND      (WINHTTP_ERROR_BASE + 101)
+#define ERROR_WINHTTP_CANNOT_CALL_AFTER_SEND       (WINHTTP_ERROR_BASE + 102)
+#define ERROR_WINHTTP_CANNOT_CALL_AFTER_OPEN       (WINHTTP_ERROR_BASE + 103)
+#define ERROR_WINHTTP_HEADER_NOT_FOUND             (WINHTTP_ERROR_BASE + 150)
+#define ERROR_WINHTTP_INVALID_SERVER_RESPONSE      (WINHTTP_ERROR_BASE + 152)
+#define ERROR_WINHTTP_INVALID_HEADER               (WINHTTP_ERROR_BASE + 153)
+#define ERROR_WINHTTP_INVALID_QUERY_REQUEST        (WINHTTP_ERROR_BASE + 154)
+#define ERROR_WINHTTP_HEADER_ALREADY_EXISTS        (WINHTTP_ERROR_BASE + 155)
+#define ERROR_WINHTTP_REDIRECT_FAILED              (WINHTTP_ERROR_BASE + 156)
+#define ERROR_WINHTTP_BAD_AUTO_PROXY_SCRIPT        (WINHTTP_ERROR_BASE + 166)
+#define ERROR_WINHTTP_UNABLE_TO_DOWNLOAD_SCRIPT    (WINHTTP_ERROR_BASE + 167)
+#define ERROR_WINHTTP_NOT_INITIALIZED              (WINHTTP_ERROR_BASE + 172)
+#define ERROR_WINHTTP_SECURE_FAILURE               (WINHTTP_ERROR_BASE + 175)
+#define ERROR_WINHTTP_AUTO_PROXY_SERVICE_ERROR     (WINHTTP_ERROR_BASE + 178)
+
 typedef struct
 {
     DWORD   dwStructSize;