1 /**
2  * Windows API header module
3  *
4  * Translated from Windows SDK Headers
5  *
6  * License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
7  * Source: $(DRUNTIMESRC core/sys/windows/_winhttp.d)
8  */
9 module core.sys.windows.winhttp;
10 version (Windows):
11 pragma(lib, "winhttp");
12 // FIXME: Grouping of constants. Windows SDK doesn't make this entirely clear
13 // FIXME: Verify WINHTTP_STATUS_CALLBACK function declaration works correctly
14 
15 import core.sys.windows.w32api;
16 import core.sys.windows.winbase;
17 import core.sys.windows.windef;
18 import core.sys.windows.winsock2;  // Selective Imports BUG (: SOCKADDR_STORAGE;)
19 
20 alias HINTERNET = void*;
21 alias LPHINTERNET = HINTERNET*;
22 alias INTERNET_PORT = WORD;
23 alias LPINTERNET_PORT = INTERNET_PORT*;
24 alias INTERNET_SCHEME = int;
25 alias LPINTERNET_SCHEME = INTERNET_SCHEME*;
26 
27 // Protocol 'Manifests'
28 enum : DWORD {
29     INTERNET_DEFAULT_PORT       = 0,
30     INTERNET_DEFAULT_HTTP_PORT  = 80,
31     INTERNET_DEFAULT_HTTPS_PORT = 443
32 }
33 
34 // WinHttpOpen() Flags:
35 enum DWORD WINHTTP_FLAG_ASYNC = 0x10000000;
36 
37 // WinHttpOpenRequest() Flags:
38 enum : DWORD {
39     WINHTTP_FLAG_SECURE               = 0x00800000,
40     WINHTTP_FLAG_ESCAPE_PERCENT       = 0x00000004,
41     WINHTTP_FLAG_NULL_CODEPAGE        = 0x00000008,
42     WINHTTP_FLAG_BYPASS_PROXY_CACHE   = 0x00000100,
43     WINHTTP_FLAG_REFRESH              = WINHTTP_FLAG_BYPASS_PROXY_CACHE,
44     WINHTTP_FLAG_ESCAPE_DISABLE       = 0x00000040,
45     WINHTTP_FLAG_ESCAPE_DISABLE_QUERY = 0x00000080,
46 
47     SECURITY_FLAG_IGNORE_UNKNOWN_CA        = 0x00000100,
48     SECURITY_FLAG_IGNORE_CERT_DATE_INVALID = 0x00002000,
49     SECURITY_FLAG_IGNORE_CERT_CN_INVALID   = 0x00001000,
50     SECURITY_FLAG_IGNORE_CERT_WRONG_USAGE  = 0x00000200
51 }
52 
53 struct WINHTTP_ASYNC_RESULT {
54     DWORD_PTR dwResult;
55     DWORD dwError;
56 }
57 alias LPWINHTTP_ASYNC_RESULT = WINHTTP_ASYNC_RESULT*;
58 
59 struct HTTP_VERSION_INFO {
60     DWORD dwMajorVersion;
61     DWORD dwMinorVersion;
62 }
63 alias LPHTTP_VERSION_INFO = HTTP_VERSION_INFO*;
64 
65 // URL Scheme
66 enum : DWORD {
67     INTERNET_SCHEME_HTTP  = 1,
68     INTERNET_SCHEME_HTTPS = 2,
69     INTERNET_SCHEME_FTP   = 3,
70     INTERNET_SCHEME_SOCKS = 4
71 }
72 
73 struct URL_COMPONENTS {
74     DWORD   dwStructSize;
75     LPWSTR  lpszScheme;
76     DWORD   dwSchemeLength;
77     INTERNET_SCHEME nScheme;
78     LPWSTR  lpszHostName;
79     DWORD   dwHostNameLength;
80     INTERNET_PORT nPort;
81     LPWSTR  lpszUserName;
82     DWORD   dwUserNameLength;
83     LPWSTR  lpszPassword;
84     DWORD   dwPasswordLength;
85     LPWSTR  lpszUrlPath;
86     DWORD   dwUrlPathLength;
87     LPWSTR  lpszExtraInfo;
88     DWORD   dwExtraInfoLength;
89 }
90 alias LPURL_COMPONENTS = URL_COMPONENTS*;
91 alias URL_COMPONENTSW = URL_COMPONENTS;
92 alias LPURL_COMPONENTSW = URL_COMPONENTS*;
93 
94 struct WINHTTP_PROXY_INFO {
95     DWORD  dwAccessType;
96     LPWSTR lpszProxy;
97     LPWSTR lpszProxyBypass;
98 }
99 alias LPWINHTTP_PROXY_INFO = WINHTTP_PROXY_INFO*;
100 alias WINHTTP_PROXY_INFOW = WINHTTP_PROXY_INFO;
101 alias LPWINHTTP_PROXY_INFOW = WINHTTP_PROXY_INFO*;
102 
103 struct WINHTTP_AUTOPROXY_OPTIONS {
104     DWORD   dwFlags;
105     DWORD   dwAutoDetectFlags;
106     LPCWSTR lpszAutoConfigUrl;
107     LPVOID  lpvReserved;
108     DWORD   dwReserved;
109     BOOL    fAutoLogonIfChallenged;
110 }
111 
112 enum : DWORD {
113     WINHTTP_AUTOPROXY_AUTO_DETECT           = 0x00000001,
114     WINHTTP_AUTOPROXY_CONFIG_URL            = 0x00000002,
115     WINHTTP_AUTOPROXY_HOST_KEEPCASE         = 0x00000004,
116     WINHTTP_AUTOPROXY_HOST_LOWERCASE        = 0x00000008,
117     WINHTTP_AUTOPROXY_RUN_INPROCESS         = 0x00010000,
118     WINHTTP_AUTOPROXY_RUN_OUTPROCESS_ONLY   = 0x00020000,
119     WINHTTP_AUTOPROXY_NO_DIRECTACCESS       = 0x00040000,
120     WINHTTP_AUTOPROXY_NO_CACHE_CLIENT       = 0x00080000,
121     WINHTTP_AUTOPROXY_NO_CACHE_SVC          = 0x00100000,
122 
123     WINHTTP_AUTOPROXY_SORT_RESULTS          = 0x00400000
124 }
125 
126 // dwAutoDetectFlags
127 enum : DWORD {
128     WINHTTP_AUTO_DETECT_TYPE_DHCP           = 0x00000001,
129     WINHTTP_AUTO_DETECT_TYPE_DNS_A          = 0x00000002
130 }
131 
132 struct WINHTTP_CERTIFICATE_INFO {
133     FILETIME ftExpiry;
134     FILETIME ftStart;
135     LPWSTR lpszSubjectInfo;
136     LPWSTR lpszIssuerInfo;
137     LPWSTR lpszProtocolName;
138     LPWSTR lpszSignatureAlgName;
139     LPWSTR lpszEncryptionAlgName;
140     DWORD dwKeySize;
141 }
142 
143 // This structure is only defined #if _WS2DEF_ defined (from <ws2def.h>) - per Windows SDK
144 align(4)
145 struct WINHTTP_CONNECTION_INFO {
146 align(4):
147     DWORD cbSize;
148     version (Win64)
149         DWORD _padding; // cheap trick without the alignment switch over this file
150     SOCKADDR_STORAGE LocalAddress;
151     SOCKADDR_STORAGE RemoteAddress;
152 }
153 
154 // WinHttpTimeFromSystemTime
155 enum DWORD WINHTTP_TIME_FORMAT_BUFSIZE  = 62;
156 
157 // CrackUrl, CombineUrl
158 enum : DWORD {
159     ICU_NO_ENCODE           = 0x20000000,
160     ICU_DECODE              = 0x10000000,
161     ICU_NO_META             = 0x08000000,
162     ICU_ENCODE_SPACES_ONLY  = 0x04000000,
163     ICU_BROWSER_MODE        = 0x02000000,
164     ICU_ENCODE_PERCENT      = 0x00001000
165 }
166 // WinHttpCrackUrl, WinHttpCreateUrl
167 enum : DWORD {
168     ICU_ESCAPE            = 0x80000000,
169     ICU_ESCAPE_AUTHORITY  = 0x00002000,
170     ICU_REJECT_USERPWD    = 0x00004000
171 }
172 enum : DWORD {
173     WINHTTP_ACCESS_TYPE_DEFAULT_PROXY             = 0,
174     WINHTTP_ACCESS_TYPE_NO_PROXY                  = 1,
175     WINHTTP_ACCESS_TYPE_NAMED_PROXY               = 3,
176     WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY           = 4
177 }
178 // WinHttpOpen 'prettifiers'
179 enum LPCWSTR WINHTTP_NO_PROXY_NAME         = null;
180 enum LPCWSTR WINHTTP_NO_PROXY_BYPASS       = null;
181 
182 enum LPVOID WINHTTP_NO_CLIENT_CERT_CONTEXT = null;
183 
184 // WinHttp{Query|Set}Option
185 enum : DWORD {
186     WINHTTP_FIRST_OPTION                         = WINHTTP_OPTION_CALLBACK,
187 
188     WINHTTP_OPTION_CALLBACK                      = 1,
189     WINHTTP_OPTION_RESOLVE_TIMEOUT               = 2,
190     WINHTTP_OPTION_CONNECT_TIMEOUT               = 3,
191     WINHTTP_OPTION_CONNECT_RETRIES               = 4,
192     WINHTTP_OPTION_SEND_TIMEOUT                  = 5,
193     WINHTTP_OPTION_RECEIVE_TIMEOUT               = 6,
194     WINHTTP_OPTION_RECEIVE_RESPONSE_TIMEOUT      = 7,
195     WINHTTP_OPTION_HANDLE_TYPE                   = 9,
196     WINHTTP_OPTION_READ_BUFFER_SIZE             = 12,
197     WINHTTP_OPTION_WRITE_BUFFER_SIZE            = 13,
198     WINHTTP_OPTION_PARENT_HANDLE                = 21,
199     WINHTTP_OPTION_EXTENDED_ERROR               = 24,
200     WINHTTP_OPTION_SECURITY_FLAGS               = 31,
201     WINHTTP_OPTION_SECURITY_CERTIFICATE_STRUCT  = 32,
202     WINHTTP_OPTION_URL                          = 34,
203     WINHTTP_OPTION_SECURITY_KEY_BITNESS         = 36,
204     WINHTTP_OPTION_PROXY                        = 38,
205     WINHTTP_OPTION_PROXY_RESULT_ENTRY           = 39,
206 
207     WINHTTP_OPTION_USER_AGENT                   = 41,
208     WINHTTP_OPTION_CONTEXT_VALUE                = 45,
209     WINHTTP_OPTION_CLIENT_CERT_CONTEXT          = 47,
210     WINHTTP_OPTION_REQUEST_PRIORITY             = 58,
211     WINHTTP_OPTION_HTTP_VERSION                 = 59,
212     WINHTTP_OPTION_DISABLE_FEATURE              = 63,
213 
214     WINHTTP_OPTION_CODEPAGE                     = 68,
215     WINHTTP_OPTION_MAX_CONNS_PER_SERVER         = 73,
216     WINHTTP_OPTION_MAX_CONNS_PER_1_0_SERVER     = 74,
217     WINHTTP_OPTION_AUTOLOGON_POLICY             = 77,
218     WINHTTP_OPTION_SERVER_CERT_CONTEXT          = 78,
219     WINHTTP_OPTION_ENABLE_FEATURE               = 79,
220     WINHTTP_OPTION_WORKER_THREAD_COUNT          = 80,
221     WINHTTP_OPTION_PASSPORT_COBRANDING_TEXT     = 81,
222     WINHTTP_OPTION_PASSPORT_COBRANDING_URL      = 82,
223     WINHTTP_OPTION_CONFIGURE_PASSPORT_AUTH      = 83,
224     WINHTTP_OPTION_SECURE_PROTOCOLS             = 84,
225     WINHTTP_OPTION_ENABLETRACING                = 85,
226     WINHTTP_OPTION_PASSPORT_SIGN_OUT            = 86,
227     WINHTTP_OPTION_PASSPORT_RETURN_URL          = 87,
228     WINHTTP_OPTION_REDIRECT_POLICY              = 88,
229     WINHTTP_OPTION_MAX_HTTP_AUTOMATIC_REDIRECTS = 89,
230     WINHTTP_OPTION_MAX_HTTP_STATUS_CONTINUE     = 90,
231     WINHTTP_OPTION_MAX_RESPONSE_HEADER_SIZE     = 91,
232     WINHTTP_OPTION_MAX_RESPONSE_DRAIN_SIZE      = 92,
233     WINHTTP_OPTION_CONNECTION_INFO              = 93,
234     WINHTTP_OPTION_CLIENT_CERT_ISSUER_LIST      = 94,
235     WINHTTP_OPTION_SPN                          = 96,
236 
237     WINHTTP_OPTION_GLOBAL_PROXY_CREDS           = 97,
238     WINHTTP_OPTION_GLOBAL_SERVER_CREDS          = 98,
239 
240     WINHTTP_OPTION_UNLOAD_NOTIFY_EVENT            = 99,
241     WINHTTP_OPTION_REJECT_USERPWD_IN_URL          = 100,
242     WINHTTP_OPTION_USE_GLOBAL_SERVER_CREDENTIALS  = 101,
243 
244     WINHTTP_OPTION_RECEIVE_PROXY_CONNECT_RESPONSE = 103,
245     WINHTTP_OPTION_IS_PROXY_CONNECT_RESPONSE      = 104,
246 
247     WINHTTP_OPTION_SERVER_SPN_USED              = 106,
248     WINHTTP_OPTION_PROXY_SPN_USED               = 107,
249 
250     WINHTTP_OPTION_SERVER_CBT                   = 108,
251 
252     WINHTTP_OPTION_UNSAFE_HEADER_PARSING          = 110,
253     WINHTTP_OPTION_ASSURED_NON_BLOCKING_CALLBACKS = 111,
254 
255     WINHTTP_OPTION_UPGRADE_TO_WEB_SOCKET          = 114,
256     WINHTTP_OPTION_WEB_SOCKET_CLOSE_TIMEOUT       = 115,
257     WINHTTP_OPTION_WEB_SOCKET_KEEPALIVE_INTERVAL  = 116,
258 
259     WINHTTP_OPTION_DECOMPRESSION                  = 118,
260 
261     WINHTTP_OPTION_WEB_SOCKET_RECEIVE_BUFFER_SIZE = 122,
262     WINHTTP_OPTION_WEB_SOCKET_SEND_BUFFER_SIZE    = 123,
263 
264     //WINHTTP_LAST_OPTION => Moved outside of enum - static if () constraints within enums
265 
266     WINHTTP_OPTION_USERNAME                      = 0x1000,
267     WINHTTP_OPTION_PASSWORD                      = 0x1001,
268     WINHTTP_OPTION_PROXY_USERNAME                = 0x1002,
269     WINHTTP_OPTION_PROXY_PASSWORD                = 0x1003,
270 
271     WINHTTP_CONNS_PER_SERVER_UNLIMITED    = 0xFFFFFFFF,
272 
273     WINHTTP_AUTOLOGON_SECURITY_LEVEL_MEDIUM = 0,
274     WINHTTP_AUTOLOGON_SECURITY_LEVEL_LOW    = 1,
275     WINHTTP_AUTOLOGON_SECURITY_LEVEL_HIGH   = 2,
276 
277     WINHTTP_AUTOLOGON_SECURITY_LEVEL_DEFAULT = WINHTTP_AUTOLOGON_SECURITY_LEVEL_MEDIUM,
278 
279     WINHTTP_OPTION_REDIRECT_POLICY_NEVER                      = 0,
280     WINHTTP_OPTION_REDIRECT_POLICY_DISALLOW_HTTPS_TO_HTTP     = 1,
281     WINHTTP_OPTION_REDIRECT_POLICY_ALWAYS                     = 2,
282 
283     WINHTTP_OPTION_REDIRECT_POLICY_LAST      = WINHTTP_OPTION_REDIRECT_POLICY_ALWAYS,
284     WINHTTP_OPTION_REDIRECT_POLICY_DEFAULT   = WINHTTP_OPTION_REDIRECT_POLICY_DISALLOW_HTTPS_TO_HTTP,
285 
286     WINHTTP_DISABLE_PASSPORT_AUTH    = 0x00000000,
287     WINHTTP_ENABLE_PASSPORT_AUTH     = 0x10000000,
288     WINHTTP_DISABLE_PASSPORT_KEYRING = 0x20000000,
289     WINHTTP_ENABLE_PASSPORT_KEYRING  = 0x40000000,
290 
291     WINHTTP_DISABLE_COOKIES                   = 0x00000001,
292     WINHTTP_DISABLE_REDIRECTS                 = 0x00000002,
293     WINHTTP_DISABLE_AUTHENTICATION            = 0x00000004,
294     WINHTTP_DISABLE_KEEP_ALIVE                = 0x00000008,
295 
296     WINHTTP_ENABLE_SSL_REVOCATION             = 0x00000001,
297     WINHTTP_ENABLE_SSL_REVERT_IMPERSONATION   = 0x00000002,
298 
299     WINHTTP_DISABLE_SPN_SERVER_PORT           = 0x00000000,
300     WINHTTP_ENABLE_SPN_SERVER_PORT            = 0x00000001,
301     WINHTTP_OPTION_SPN_MASK                   = WINHTTP_ENABLE_SPN_SERVER_PORT
302 }
303 
304 // Windows 8.1 SDK:
305 static if (_WIN32_WINNT >= 0x602) {
306     enum DWORD WINHTTP_LAST_OPTION            = WINHTTP_OPTION_WEB_SOCKET_SEND_BUFFER_SIZE;
307 } else {    // Windows 7.0A SDK:
308     enum DWORD WINHTTP_LAST_OPTION            = WINHTTP_OPTION_SERVER_CBT;
309 }
310 
311 enum : DWORD {
312     WINHTTP_DECOMPRESSION_FLAG_GZIP    = 0x00000001,
313     WINHTTP_DECOMPRESSION_FLAG_DEFLATE = 0x00000002,
314     WINHTTP_DECOMPRESSION_FLAG_ALL = (WINHTTP_DECOMPRESSION_FLAG_GZIP | WINHTTP_DECOMPRESSION_FLAG_DEFLATE)
315 }
316 
317 struct WINHTTP_CREDS {
318     LPSTR lpszUserName;
319     LPSTR lpszPassword;
320     LPSTR lpszRealm;
321     DWORD dwAuthScheme;
322     LPSTR lpszHostName;
323     DWORD dwPort;
324 }
325 alias PWINHTTP_CREDS = WINHTTP_CREDS*;
326 
327 struct WINHTTP_CREDS_EX {
328     LPSTR lpszUserName;
329     LPSTR lpszPassword;
330     LPSTR lpszRealm;
331     DWORD dwAuthScheme;
332     LPSTR lpszHostName;
333     DWORD dwPort;
334     LPSTR lpszUrl;
335 }
336 alias PWINHTTP_CREDS_EX = WINHTTP_CREDS_EX*;
337 
338 enum : DWORD {
339     WINHTTP_HANDLE_TYPE_SESSION                = 1,
340     WINHTTP_HANDLE_TYPE_CONNECT                = 2,
341     WINHTTP_HANDLE_TYPE_REQUEST                = 3,
342 
343     WINHTTP_AUTH_SCHEME_BASIC      = 0x00000001,
344     WINHTTP_AUTH_SCHEME_NTLM       = 0x00000002,
345     WINHTTP_AUTH_SCHEME_PASSPORT   = 0x00000004,
346     WINHTTP_AUTH_SCHEME_DIGEST     = 0x00000008,
347     WINHTTP_AUTH_SCHEME_NEGOTIATE  = 0x00000010,
348 
349     WINHTTP_AUTH_TARGET_SERVER = 0x00000000,
350     WINHTTP_AUTH_TARGET_PROXY  = 0x00000001,
351 
352     SECURITY_FLAG_SECURE                    = 0x00000001,
353     SECURITY_FLAG_STRENGTH_WEAK             = 0x10000000,
354     SECURITY_FLAG_STRENGTH_MEDIUM           = 0x40000000,
355     SECURITY_FLAG_STRENGTH_STRONG           = 0x20000000,
356 
357     WINHTTP_CALLBACK_STATUS_FLAG_CERT_REV_FAILED         = 0x00000001,
358     WINHTTP_CALLBACK_STATUS_FLAG_INVALID_CERT            = 0x00000002,
359     WINHTTP_CALLBACK_STATUS_FLAG_CERT_REVOKED            = 0x00000004,
360     WINHTTP_CALLBACK_STATUS_FLAG_INVALID_CA              = 0x00000008,
361     WINHTTP_CALLBACK_STATUS_FLAG_CERT_CN_INVALID         = 0x00000010,
362     WINHTTP_CALLBACK_STATUS_FLAG_CERT_DATE_INVALID       = 0x00000020,
363     WINHTTP_CALLBACK_STATUS_FLAG_CERT_WRONG_USAGE        = 0x00000040,
364     WINHTTP_CALLBACK_STATUS_FLAG_SECURITY_CHANNEL_ERROR  = 0x80000000,
365 
366     WINHTTP_FLAG_SECURE_PROTOCOL_SSL2   = 0x00000008,
367     WINHTTP_FLAG_SECURE_PROTOCOL_SSL3   = 0x00000020,
368     WINHTTP_FLAG_SECURE_PROTOCOL_TLS1   = 0x00000080,
369     WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_1 = 0x00000200,
370     WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_2 = 0x00000800,
371     WINHTTP_FLAG_SECURE_PROTOCOL_ALL    = (WINHTTP_FLAG_SECURE_PROTOCOL_SSL2 |
372                                                  WINHTTP_FLAG_SECURE_PROTOCOL_SSL3 |
373                                                  WINHTTP_FLAG_SECURE_PROTOCOL_TLS1)
374 }
375 
376 alias extern(Windows) int fnWINHTTP_STATUS_CALLBACK(HINTERNET hInternet, DWORD_PTR dwContext,
377                           DWORD dwInternetStatus, LPVOID lpvStatusInformation,DWORD dwStatusInformationLength);
378 alias WINHTTP_STATUS_CALLBACK = fnWINHTTP_STATUS_CALLBACK*;
379 alias LPWINHTTP_STATUS_CALLBACK = WINHTTP_STATUS_CALLBACK*;
380 
381 enum : DWORD {
382     WINHTTP_CALLBACK_STATUS_RESOLVING_NAME          = 0x00000001,
383     WINHTTP_CALLBACK_STATUS_NAME_RESOLVED           = 0x00000002,
384     WINHTTP_CALLBACK_STATUS_CONNECTING_TO_SERVER    = 0x00000004,
385     WINHTTP_CALLBACK_STATUS_CONNECTED_TO_SERVER     = 0x00000008,
386     WINHTTP_CALLBACK_STATUS_SENDING_REQUEST         = 0x00000010,
387     WINHTTP_CALLBACK_STATUS_REQUEST_SENT            = 0x00000020,
388     WINHTTP_CALLBACK_STATUS_RECEIVING_RESPONSE      = 0x00000040,
389     WINHTTP_CALLBACK_STATUS_RESPONSE_RECEIVED       = 0x00000080,
390     WINHTTP_CALLBACK_STATUS_CLOSING_CONNECTION      = 0x00000100,
391     WINHTTP_CALLBACK_STATUS_CONNECTION_CLOSED       = 0x00000200,
392     WINHTTP_CALLBACK_STATUS_HANDLE_CREATED          = 0x00000400,
393     WINHTTP_CALLBACK_STATUS_HANDLE_CLOSING          = 0x00000800,
394     WINHTTP_CALLBACK_STATUS_DETECTING_PROXY         = 0x00001000,
395     WINHTTP_CALLBACK_STATUS_REDIRECT                = 0x00004000,
396     WINHTTP_CALLBACK_STATUS_INTERMEDIATE_RESPONSE   = 0x00008000,
397     WINHTTP_CALLBACK_STATUS_SECURE_FAILURE          = 0x00010000,
398     WINHTTP_CALLBACK_STATUS_HEADERS_AVAILABLE       = 0x00020000,
399     WINHTTP_CALLBACK_STATUS_DATA_AVAILABLE          = 0x00040000,
400     WINHTTP_CALLBACK_STATUS_READ_COMPLETE           = 0x00080000,
401     WINHTTP_CALLBACK_STATUS_WRITE_COMPLETE          = 0x00100000,
402     WINHTTP_CALLBACK_STATUS_REQUEST_ERROR           = 0x00200000,
403     WINHTTP_CALLBACK_STATUS_SENDREQUEST_COMPLETE    = 0x00400000
404 }
405 
406 enum : DWORD {
407     WINHTTP_CALLBACK_STATUS_GETPROXYFORURL_COMPLETE = 0x01000000,
408     WINHTTP_CALLBACK_STATUS_CLOSE_COMPLETE          = 0x02000000,
409     WINHTTP_CALLBACK_STATUS_SHUTDOWN_COMPLETE       = 0x04000000
410 }
411 
412 enum : DWORD {
413     API_RECEIVE_RESPONSE        = 1,
414     API_QUERY_DATA_AVAILABLE    = 2,
415     API_READ_DATA               = 3,
416     API_WRITE_DATA              = 4,
417     API_SEND_REQUEST            = 5
418 }
419 
420 enum : DWORD {
421     WINHTTP_CALLBACK_FLAG_RESOLVE_NAME            = (WINHTTP_CALLBACK_STATUS_RESOLVING_NAME | WINHTTP_CALLBACK_STATUS_NAME_RESOLVED),
422     WINHTTP_CALLBACK_FLAG_CONNECT_TO_SERVER       = (WINHTTP_CALLBACK_STATUS_CONNECTING_TO_SERVER | WINHTTP_CALLBACK_STATUS_CONNECTED_TO_SERVER),
423     WINHTTP_CALLBACK_FLAG_SEND_REQUEST            = (WINHTTP_CALLBACK_STATUS_SENDING_REQUEST | WINHTTP_CALLBACK_STATUS_REQUEST_SENT),
424     WINHTTP_CALLBACK_FLAG_RECEIVE_RESPONSE        = (WINHTTP_CALLBACK_STATUS_RECEIVING_RESPONSE | WINHTTP_CALLBACK_STATUS_RESPONSE_RECEIVED),
425     WINHTTP_CALLBACK_FLAG_CLOSE_CONNECTION        = (WINHTTP_CALLBACK_STATUS_CLOSING_CONNECTION | WINHTTP_CALLBACK_STATUS_CONNECTION_CLOSED),
426     WINHTTP_CALLBACK_FLAG_HANDLES                 = (WINHTTP_CALLBACK_STATUS_HANDLE_CREATED | WINHTTP_CALLBACK_STATUS_HANDLE_CLOSING),
427     WINHTTP_CALLBACK_FLAG_DETECTING_PROXY         = WINHTTP_CALLBACK_STATUS_DETECTING_PROXY,
428     WINHTTP_CALLBACK_FLAG_REDIRECT                = WINHTTP_CALLBACK_STATUS_REDIRECT,
429     WINHTTP_CALLBACK_FLAG_INTERMEDIATE_RESPONSE   = WINHTTP_CALLBACK_STATUS_INTERMEDIATE_RESPONSE,
430     WINHTTP_CALLBACK_FLAG_SECURE_FAILURE          = WINHTTP_CALLBACK_STATUS_SECURE_FAILURE,
431     WINHTTP_CALLBACK_FLAG_SENDREQUEST_COMPLETE    = WINHTTP_CALLBACK_STATUS_SENDREQUEST_COMPLETE,
432     WINHTTP_CALLBACK_FLAG_HEADERS_AVAILABLE       = WINHTTP_CALLBACK_STATUS_HEADERS_AVAILABLE,
433     WINHTTP_CALLBACK_FLAG_DATA_AVAILABLE          = WINHTTP_CALLBACK_STATUS_DATA_AVAILABLE,
434     WINHTTP_CALLBACK_FLAG_READ_COMPLETE           = WINHTTP_CALLBACK_STATUS_READ_COMPLETE,
435     WINHTTP_CALLBACK_FLAG_WRITE_COMPLETE          = WINHTTP_CALLBACK_STATUS_WRITE_COMPLETE,
436     WINHTTP_CALLBACK_FLAG_REQUEST_ERROR           = WINHTTP_CALLBACK_STATUS_REQUEST_ERROR
437 }
438 
439 enum DWORD WINHTTP_CALLBACK_FLAG_GETPROXYFORURL_COMPLETE  = WINHTTP_CALLBACK_STATUS_GETPROXYFORURL_COMPLETE;
440 
441 // Windows 8+/2012+
442 static if (_WIN32_WINNT >= 0x602)   {
443   enum DWORD WINHTTP_CALLBACK_FLAG_ALL_COMPLETIONS        =  (WINHTTP_CALLBACK_STATUS_SENDREQUEST_COMPLETE
444                                                         | WINHTTP_CALLBACK_STATUS_HEADERS_AVAILABLE
445                                                         | WINHTTP_CALLBACK_STATUS_DATA_AVAILABLE
446                                                         | WINHTTP_CALLBACK_STATUS_READ_COMPLETE
447                                                         | WINHTTP_CALLBACK_STATUS_WRITE_COMPLETE
448                                                         | WINHTTP_CALLBACK_STATUS_REQUEST_ERROR);
449 } else {
450   enum DWORD WINHTTP_CALLBACK_FLAG_ALL_COMPLETIONS        =  (WINHTTP_CALLBACK_STATUS_SENDREQUEST_COMPLETE
451                                                         | WINHTTP_CALLBACK_STATUS_HEADERS_AVAILABLE
452                                                         | WINHTTP_CALLBACK_STATUS_DATA_AVAILABLE
453                                                         | WINHTTP_CALLBACK_STATUS_READ_COMPLETE
454                                                         | WINHTTP_CALLBACK_STATUS_WRITE_COMPLETE
455                                                         | WINHTTP_CALLBACK_STATUS_REQUEST_ERROR
456                                                         | WINHTTP_CALLBACK_STATUS_GETPROXYFORURL_COMPLETE);
457 }
458 
459 enum DWORD  WINHTTP_CALLBACK_FLAG_ALL_NOTIFICATIONS      =  0xffffffff;
460 
461 enum WINHTTP_INVALID_STATUS_CALLBACK        = (cast(WINHTTP_STATUS_CALLBACK)(-1L));
462 
463 enum : DWORD {
464     WINHTTP_QUERY_MIME_VERSION               = 0,
465     WINHTTP_QUERY_CONTENT_TYPE               = 1,
466     WINHTTP_QUERY_CONTENT_TRANSFER_ENCODING  = 2,
467     WINHTTP_QUERY_CONTENT_ID                 = 3,
468     WINHTTP_QUERY_CONTENT_DESCRIPTION        = 4,
469     WINHTTP_QUERY_CONTENT_LENGTH             = 5,
470     WINHTTP_QUERY_CONTENT_LANGUAGE           = 6,
471     WINHTTP_QUERY_ALLOW                      = 7,
472     WINHTTP_QUERY_PUBLIC                     = 8,
473     WINHTTP_QUERY_DATE                       = 9,
474     WINHTTP_QUERY_EXPIRES                    = 10,
475     WINHTTP_QUERY_LAST_MODIFIED              = 11,
476     WINHTTP_QUERY_MESSAGE_ID                 = 12,
477     WINHTTP_QUERY_URI                        = 13,
478     WINHTTP_QUERY_DERIVED_FROM               = 14,
479     WINHTTP_QUERY_COST                       = 15,
480     WINHTTP_QUERY_LINK                       = 16,
481     WINHTTP_QUERY_PRAGMA                     = 17,
482     WINHTTP_QUERY_VERSION                    = 18,
483     WINHTTP_QUERY_STATUS_CODE                = 19,
484     WINHTTP_QUERY_STATUS_TEXT                = 20,
485     WINHTTP_QUERY_RAW_HEADERS                = 21,
486     WINHTTP_QUERY_RAW_HEADERS_CRLF           = 22,
487     WINHTTP_QUERY_CONNECTION                 = 23,
488     WINHTTP_QUERY_ACCEPT                     = 24,
489     WINHTTP_QUERY_ACCEPT_CHARSET             = 25,
490     WINHTTP_QUERY_ACCEPT_ENCODING            = 26,
491     WINHTTP_QUERY_ACCEPT_LANGUAGE            = 27,
492     WINHTTP_QUERY_AUTHORIZATION              = 28,
493     WINHTTP_QUERY_CONTENT_ENCODING           = 29,
494     WINHTTP_QUERY_FORWARDED                  = 30,
495     WINHTTP_QUERY_FROM                       = 31,
496     WINHTTP_QUERY_IF_MODIFIED_SINCE          = 32,
497     WINHTTP_QUERY_LOCATION                   = 33,
498     WINHTTP_QUERY_ORIG_URI                   = 34,
499     WINHTTP_QUERY_REFERER                    = 35,
500     WINHTTP_QUERY_RETRY_AFTER                = 36,
501     WINHTTP_QUERY_SERVER                     = 37,
502     WINHTTP_QUERY_TITLE                      = 38,
503     WINHTTP_QUERY_USER_AGENT                 = 39,
504     WINHTTP_QUERY_WWW_AUTHENTICATE           = 40,
505     WINHTTP_QUERY_PROXY_AUTHENTICATE         = 41,
506     WINHTTP_QUERY_ACCEPT_RANGES              = 42,
507     WINHTTP_QUERY_SET_COOKIE                 = 43,
508     WINHTTP_QUERY_COOKIE                     = 44,
509     WINHTTP_QUERY_REQUEST_METHOD             = 45,
510     WINHTTP_QUERY_REFRESH                    = 46,
511     WINHTTP_QUERY_CONTENT_DISPOSITION        = 47,
512 
513     // HTTP 1.1 defined headers
514 
515     WINHTTP_QUERY_AGE                        = 48,
516     WINHTTP_QUERY_CACHE_CONTROL              = 49,
517     WINHTTP_QUERY_CONTENT_BASE               = 50,
518     WINHTTP_QUERY_CONTENT_LOCATION           = 51,
519     WINHTTP_QUERY_CONTENT_MD5                = 52,
520     WINHTTP_QUERY_CONTENT_RANGE              = 53,
521     WINHTTP_QUERY_ETAG                       = 54,
522     WINHTTP_QUERY_HOST                       = 55,
523     WINHTTP_QUERY_IF_MATCH                   = 56,
524     WINHTTP_QUERY_IF_NONE_MATCH              = 57,
525     WINHTTP_QUERY_IF_RANGE                   = 58,
526     WINHTTP_QUERY_IF_UNMODIFIED_SINCE        = 59,
527     WINHTTP_QUERY_MAX_FORWARDS               = 60,
528     WINHTTP_QUERY_PROXY_AUTHORIZATION        = 61,
529     WINHTTP_QUERY_RANGE                      = 62,
530     WINHTTP_QUERY_TRANSFER_ENCODING          = 63,
531     WINHTTP_QUERY_UPGRADE                    = 64,
532     WINHTTP_QUERY_VARY                       = 65,
533     WINHTTP_QUERY_VIA                        = 66,
534     WINHTTP_QUERY_WARNING                    = 67,
535     WINHTTP_QUERY_EXPECT                     = 68,
536     WINHTTP_QUERY_PROXY_CONNECTION           = 69,
537     WINHTTP_QUERY_UNLESS_MODIFIED_SINCE      = 70,
538 
539     WINHTTP_QUERY_PROXY_SUPPORT              = 75,
540     WINHTTP_QUERY_AUTHENTICATION_INFO        = 76,
541     WINHTTP_QUERY_PASSPORT_URLS              = 77,
542     WINHTTP_QUERY_PASSPORT_CONFIG            = 78,
543 
544     WINHTTP_QUERY_MAX                        = 78,
545 
546     WINHTTP_QUERY_CUSTOM                     = 65535,
547 
548     WINHTTP_QUERY_FLAG_REQUEST_HEADERS         = 0x80000000,
549 
550     WINHTTP_QUERY_FLAG_SYSTEMTIME              = 0x40000000,
551 
552     WINHTTP_QUERY_FLAG_NUMBER                  = 0x20000000
553 }
554 
555 enum : DWORD {
556     HTTP_STATUS_CONTINUE            = 100,
557     HTTP_STATUS_SWITCH_PROTOCOLS    = 101,
558 
559     HTTP_STATUS_OK                  = 200,
560     HTTP_STATUS_CREATED             = 201,
561     HTTP_STATUS_ACCEPTED            = 202,
562     HTTP_STATUS_PARTIAL             = 203,
563     HTTP_STATUS_NO_CONTENT          = 204,
564     HTTP_STATUS_RESET_CONTENT       = 205,
565     HTTP_STATUS_PARTIAL_CONTENT     = 206,
566     HTTP_STATUS_WEBDAV_MULTI_STATUS = 207,
567 
568     HTTP_STATUS_AMBIGUOUS           = 300,
569     HTTP_STATUS_MOVED               = 301,
570     HTTP_STATUS_REDIRECT            = 302,
571     HTTP_STATUS_REDIRECT_METHOD     = 303,
572     HTTP_STATUS_NOT_MODIFIED        = 304,
573     HTTP_STATUS_USE_PROXY           = 305,
574     HTTP_STATUS_REDIRECT_KEEP_VERB  = 307,
575 
576     HTTP_STATUS_BAD_REQUEST       = 400,
577     HTTP_STATUS_DENIED            = 401,
578     HTTP_STATUS_PAYMENT_REQ       = 402,
579     HTTP_STATUS_FORBIDDEN         = 403,
580     HTTP_STATUS_NOT_FOUND         = 404,
581     HTTP_STATUS_BAD_METHOD        = 405,
582     HTTP_STATUS_NONE_ACCEPTABLE   = 406,
583     HTTP_STATUS_PROXY_AUTH_REQ    = 407,
584     HTTP_STATUS_REQUEST_TIMEOUT   = 408,
585     HTTP_STATUS_CONFLICT          = 409,
586     HTTP_STATUS_GONE              = 410,
587     HTTP_STATUS_LENGTH_REQUIRED   = 411,
588     HTTP_STATUS_PRECOND_FAILED    = 412,
589     HTTP_STATUS_REQUEST_TOO_LARGE = 413,
590     HTTP_STATUS_URI_TOO_LONG      = 414,
591     HTTP_STATUS_UNSUPPORTED_MEDIA = 415,
592     HTTP_STATUS_RETRY_WITH        = 449,
593 
594     HTTP_STATUS_SERVER_ERROR      = 500,
595     HTTP_STATUS_NOT_SUPPORTED     = 501,
596     HTTP_STATUS_BAD_GATEWAY       = 502,
597     HTTP_STATUS_SERVICE_UNAVAIL   = 503,
598     HTTP_STATUS_GATEWAY_TIMEOUT   = 504,
599     HTTP_STATUS_VERSION_NOT_SUP   = 505,
600 
601     HTTP_STATUS_FIRST             = HTTP_STATUS_CONTINUE,
602     HTTP_STATUS_LAST              = HTTP_STATUS_VERSION_NOT_SUP
603 }
604 
605 enum LPCWSTR WINHTTP_NO_REFERER             = null;
606 enum LPCWSTR * WINHTTP_DEFAULT_ACCEPT_TYPES = null;
607 
608 enum : DWORD {
609     WINHTTP_ADDREQ_INDEX_MASK     = 0x0000FFFF,
610     WINHTTP_ADDREQ_FLAGS_MASK     = 0xFFFF0000,
611 
612     WINHTTP_ADDREQ_FLAG_ADD_IF_NEW = 0x10000000,
613 
614     WINHTTP_ADDREQ_FLAG_ADD        = 0x20000000,
615 
616     WINHTTP_ADDREQ_FLAG_COALESCE_WITH_COMMA       = 0x40000000,
617     WINHTTP_ADDREQ_FLAG_COALESCE_WITH_SEMICOLON   = 0x01000000,
618     WINHTTP_ADDREQ_FLAG_COALESCE                  = WINHTTP_ADDREQ_FLAG_COALESCE_WITH_COMMA,
619 
620     WINHTTP_ADDREQ_FLAG_REPLACE    = 0x80000000,
621 
622     WINHTTP_IGNORE_REQUEST_TOTAL_LENGTH = 0
623 }
624 
625 enum LPCWSTR WINHTTP_NO_ADDITIONAL_HEADERS = null;
626 enum LPVOID WINHTTP_NO_REQUEST_DATA        = null;
627 
628 enum LPCWSTR WINHTTP_HEADER_NAME_BY_INDEX  = null;
629 enum LPVOID WINHTTP_NO_OUTPUT_BUFFER       = null;
630 enum LPDWORD WINHTTP_NO_HEADER_INDEX       = null;
631 
632 struct WINHTTP_CURRENT_USER_IE_PROXY_CONFIG {
633     BOOL    fAutoDetect;
634     LPWSTR  lpszAutoConfigUrl;
635     LPWSTR  lpszProxy;
636     LPWSTR  lpszProxyBypass;
637 }
638 
639 // WinHttp API error returns
640 enum : DWORD {
641     WINHTTP_ERROR_BASE                   = 12000,
642 
643     ERROR_WINHTTP_OUT_OF_HANDLES         = (WINHTTP_ERROR_BASE + 1),
644     ERROR_WINHTTP_TIMEOUT                = (WINHTTP_ERROR_BASE + 2),
645     ERROR_WINHTTP_INTERNAL_ERROR         = (WINHTTP_ERROR_BASE + 4),
646     ERROR_WINHTTP_INVALID_URL            = (WINHTTP_ERROR_BASE + 5),
647     ERROR_WINHTTP_UNRECOGNIZED_SCHEME    = (WINHTTP_ERROR_BASE + 6),
648     ERROR_WINHTTP_NAME_NOT_RESOLVED      = (WINHTTP_ERROR_BASE + 7),
649     ERROR_WINHTTP_INVALID_OPTION         = (WINHTTP_ERROR_BASE + 9),
650     ERROR_WINHTTP_OPTION_NOT_SETTABLE    = (WINHTTP_ERROR_BASE + 11),
651     ERROR_WINHTTP_SHUTDOWN               = (WINHTTP_ERROR_BASE + 12),
652 
653     ERROR_WINHTTP_LOGIN_FAILURE          = (WINHTTP_ERROR_BASE + 15),
654     ERROR_WINHTTP_OPERATION_CANCELLED    = (WINHTTP_ERROR_BASE + 17),
655     ERROR_WINHTTP_INCORRECT_HANDLE_TYPE  = (WINHTTP_ERROR_BASE + 18),
656     ERROR_WINHTTP_INCORRECT_HANDLE_STATE = (WINHTTP_ERROR_BASE + 19),
657     ERROR_WINHTTP_CANNOT_CONNECT         = (WINHTTP_ERROR_BASE + 29),
658     ERROR_WINHTTP_CONNECTION_ERROR       = (WINHTTP_ERROR_BASE + 30),
659     ERROR_WINHTTP_RESEND_REQUEST         = (WINHTTP_ERROR_BASE + 32),
660 
661     ERROR_WINHTTP_CLIENT_AUTH_CERT_NEEDED = (WINHTTP_ERROR_BASE + 44),
662 
663     ERROR_WINHTTP_CANNOT_CALL_BEFORE_OPEN = (WINHTTP_ERROR_BASE + 100),
664     ERROR_WINHTTP_CANNOT_CALL_BEFORE_SEND = (WINHTTP_ERROR_BASE + 101),
665     ERROR_WINHTTP_CANNOT_CALL_AFTER_SEND  = (WINHTTP_ERROR_BASE + 102),
666     ERROR_WINHTTP_CANNOT_CALL_AFTER_OPEN  = (WINHTTP_ERROR_BASE + 103),
667 
668     ERROR_WINHTTP_HEADER_NOT_FOUND           = (WINHTTP_ERROR_BASE + 150),
669     ERROR_WINHTTP_INVALID_SERVER_RESPONSE    = (WINHTTP_ERROR_BASE + 152),
670     ERROR_WINHTTP_INVALID_HEADER             = (WINHTTP_ERROR_BASE + 153),
671     ERROR_WINHTTP_INVALID_QUERY_REQUEST      = (WINHTTP_ERROR_BASE + 154),
672     ERROR_WINHTTP_HEADER_ALREADY_EXISTS      = (WINHTTP_ERROR_BASE + 155),
673     ERROR_WINHTTP_REDIRECT_FAILED            = (WINHTTP_ERROR_BASE + 156),
674 
675     ERROR_WINHTTP_AUTO_PROXY_SERVICE_ERROR  = (WINHTTP_ERROR_BASE + 178),
676     ERROR_WINHTTP_BAD_AUTO_PROXY_SCRIPT     = (WINHTTP_ERROR_BASE + 166),
677     ERROR_WINHTTP_UNABLE_TO_DOWNLOAD_SCRIPT = (WINHTTP_ERROR_BASE + 167),
678     ERROR_WINHTTP_UNHANDLED_SCRIPT_TYPE     = (WINHTTP_ERROR_BASE + 176),
679     ERROR_WINHTTP_SCRIPT_EXECUTION_ERROR    = (WINHTTP_ERROR_BASE + 177),
680 
681     ERROR_WINHTTP_NOT_INITIALIZED        = (WINHTTP_ERROR_BASE + 172),
682     ERROR_WINHTTP_SECURE_FAILURE         = (WINHTTP_ERROR_BASE + 175),
683 
684     ERROR_WINHTTP_SECURE_CERT_DATE_INVALID  = (WINHTTP_ERROR_BASE + 37),
685     ERROR_WINHTTP_SECURE_CERT_CN_INVALID    = (WINHTTP_ERROR_BASE + 38),
686     ERROR_WINHTTP_SECURE_INVALID_CA         = (WINHTTP_ERROR_BASE + 45),
687     ERROR_WINHTTP_SECURE_CERT_REV_FAILED    = (WINHTTP_ERROR_BASE + 57),
688     ERROR_WINHTTP_SECURE_CHANNEL_ERROR      = (WINHTTP_ERROR_BASE + 157),
689     ERROR_WINHTTP_SECURE_INVALID_CERT       = (WINHTTP_ERROR_BASE + 169),
690     ERROR_WINHTTP_SECURE_CERT_REVOKED       = (WINHTTP_ERROR_BASE + 170),
691     ERROR_WINHTTP_SECURE_CERT_WRONG_USAGE   = (WINHTTP_ERROR_BASE + 179),
692 
693     ERROR_WINHTTP_AUTODETECTION_FAILED                  = (WINHTTP_ERROR_BASE + 180),
694     ERROR_WINHTTP_HEADER_COUNT_EXCEEDED                 = (WINHTTP_ERROR_BASE + 181),
695     ERROR_WINHTTP_HEADER_SIZE_OVERFLOW                  = (WINHTTP_ERROR_BASE + 182),
696     ERROR_WINHTTP_CHUNKED_ENCODING_HEADER_SIZE_OVERFLOW = (WINHTTP_ERROR_BASE + 183),
697     ERROR_WINHTTP_RESPONSE_DRAIN_OVERFLOW               = (WINHTTP_ERROR_BASE + 184),
698     ERROR_WINHTTP_CLIENT_CERT_NO_PRIVATE_KEY            = (WINHTTP_ERROR_BASE + 185),
699     ERROR_WINHTTP_CLIENT_CERT_NO_ACCESS_PRIVATE_KEY     = (WINHTTP_ERROR_BASE + 186),
700 
701     WINHTTP_ERROR_LAST                                  = (WINHTTP_ERROR_BASE + 186)
702 }
703 
704 enum : DWORD {
705     WINHTTP_RESET_STATE                  = 0x00000001,
706     WINHTTP_RESET_SWPAD_CURRENT_NETWORK  = 0x00000002,
707     WINHTTP_RESET_SWPAD_ALL              = 0x00000004,
708     WINHTTP_RESET_SCRIPT_CACHE           = 0x00000008,
709     WINHTTP_RESET_ALL                    = 0x0000FFFF,
710     WINHTTP_RESET_NOTIFY_NETWORK_CHANGED = 0x00010000,
711     WINHTTP_RESET_OUT_OF_PROC            = 0x00020000
712 }
713 
714 enum : DWORD {
715     WINHTTP_WEB_SOCKET_MAX_CLOSE_REASON_LENGTH = 123,
716     WINHTTP_WEB_SOCKET_MIN_KEEPALIVE_VALUE     = 15000
717 }
718 
719 // Version(Windows8) || Version(Windows2012):
720 static if (_WIN32_WINNT >= 0x602)
721 {
722     enum WINHTTP_WEB_SOCKET_OPERATION : DWORD
723     {
724         WINHTTP_WEB_SOCKET_SEND_OPERATION                   = 0,
725         WINHTTP_WEB_SOCKET_RECEIVE_OPERATION                = 1,
726         WINHTTP_WEB_SOCKET_CLOSE_OPERATION                  = 2,
727         WINHTTP_WEB_SOCKET_SHUTDOWN_OPERATION               = 3
728     }
729     enum WINHTTP_WEB_SOCKET_BUFFER_TYPE : DWORD
730     {
731         WINHTTP_WEB_SOCKET_BINARY_MESSAGE_BUFFER_TYPE       = 0,
732         WINHTTP_WEB_SOCKET_BINARY_FRAGMENT_BUFFER_TYPE      = 1,
733         WINHTTP_WEB_SOCKET_UTF8_MESSAGE_BUFFER_TYPE         = 2,
734         WINHTTP_WEB_SOCKET_UTF8_FRAGMENT_BUFFER_TYPE        = 3,
735         WINHTTP_WEB_SOCKET_CLOSE_BUFFER_TYPE                = 4
736     }
737     enum WINHTTP_WEB_SOCKET_CLOSE_STATUS : DWORD
738     {
739         WINHTTP_WEB_SOCKET_SUCCESS_CLOSE_STATUS                = 1000,
740         WINHTTP_WEB_SOCKET_ENDPOINT_TERMINATED_CLOSE_STATUS    = 1001,
741         WINHTTP_WEB_SOCKET_PROTOCOL_ERROR_CLOSE_STATUS         = 1002,
742         WINHTTP_WEB_SOCKET_INVALID_DATA_TYPE_CLOSE_STATUS      = 1003,
743         WINHTTP_WEB_SOCKET_EMPTY_CLOSE_STATUS                  = 1005,
744         WINHTTP_WEB_SOCKET_ABORTED_CLOSE_STATUS                = 1006,
745         WINHTTP_WEB_SOCKET_INVALID_PAYLOAD_CLOSE_STATUS        = 1007,
746         WINHTTP_WEB_SOCKET_POLICY_VIOLATION_CLOSE_STATUS       = 1008,
747         WINHTTP_WEB_SOCKET_MESSAGE_TOO_BIG_CLOSE_STATUS        = 1009,
748         WINHTTP_WEB_SOCKET_UNSUPPORTED_EXTENSIONS_CLOSE_STATUS = 1010,
749         WINHTTP_WEB_SOCKET_SERVER_ERROR_CLOSE_STATUS           = 1011,
750         WINHTTP_WEB_SOCKET_SECURE_HANDSHAKE_ERROR_CLOSE_STATUS = 1015
751     }
752     struct WINHTTP_PROXY_RESULT_ENTRY {
753         BOOL            fProxy;
754         BOOL            fBypass;
755         INTERNET_SCHEME ProxyScheme;
756         PWSTR           pwszProxy;
757         INTERNET_PORT   ProxyPort;
758     }
759     struct WINHTTP_PROXY_RESULT {
760         DWORD cEntries;
761         WINHTTP_PROXY_RESULT_ENTRY *pEntries;
762     }
763     struct WINHTTP_WEB_SOCKET_ASYNC_RESULT {
764         WINHTTP_ASYNC_RESULT AsyncResult;
765         WINHTTP_WEB_SOCKET_OPERATION Operation;
766     }
767     struct WINHTTP_WEB_SOCKET_STATUS {
768         DWORD dwBytesTransferred;
769         WINHTTP_WEB_SOCKET_BUFFER_TYPE eBufferType;
770     }
771 }
772 
773 
774 extern (Windows) {
775     BOOL WinHttpAddRequestHeaders(HINTERNET hRequest, LPCWSTR pwszHeaders, DWORD dwHeadersLength, DWORD dwModifiers);
776 
777     BOOL WinHttpCheckPlatform();
778 
779     BOOL WinHttpCloseHandle(HINTERNET hInternet);
780 
781     HINTERNET WinHttpConnect(HINTERNET hSession, LPCWSTR pswzServerName, INTERNET_PORT nServerPort, DWORD dwReserved);
782 
783     BOOL WinHttpCrackUrl(LPCWSTR pwszUrl, DWORD dwUrlLength, DWORD dwFlags, LPURL_COMPONENTS lpUrlComponents);
784 
785     BOOL WinHttpCreateUrl(LPURL_COMPONENTS lpUrlComponents, DWORD dwFlags, LPWSTR pwszUrl, LPDWORD lpdwUrlLength);
786     BOOL WinHttpDetectAutoProxyConfigUrl(DWORD dwAutoDetectFlags, LPWSTR *ppwszAutoConfigUrl);
787 
788     BOOL WinHttpGetDefaultProxyConfiguration(WINHTTP_PROXY_INFO *pProxyInfo);
789     BOOL WinHttpGetIEProxyConfigForCurrentUser(WINHTTP_CURRENT_USER_IE_PROXY_CONFIG *pProxyConfig);
790     BOOL WinHttpGetProxyForUrl(HINTERNET hSession,  LPCWSTR lpcwszUrl,
791                                WINHTTP_AUTOPROXY_OPTIONS *pAutoProxyOptions, WINHTTP_PROXY_INFO *pProxyInfo);
792 
793     HINTERNET WinHttpOpen(LPCWSTR pwszUserAgent, DWORD dwAccessType, LPCWSTR pwszProxyName,
794                           LPCWSTR pwszProxyBypass, DWORD dwFlags);
795     HINTERNET WinHttpOpenRequest(HINTERNET hConnect, LPCWSTR pwszVerb, LPCWSTR pwszObjectName,
796                                  LPCWSTR pwszVersion, LPCWSTR pwszReferrer,
797                                  LPCWSTR *ppwszAcceptTypes, DWORD dwFlags);
798 
799     BOOL WinHttpQueryAuthSchemes(HINTERNET hRequest, LPDWORD lpdwSupportedSchemes,
800                                  LPDWORD lpdwFirstScheme, LPDWORD pdwAuthTarget);
801     BOOL WinHttpQueryDataAvailable(HINTERNET hRequest, LPDWORD lpdwNumberOfBytesAvailable);
802     BOOL WinHttpQueryHeaders(HINTERNET hRequest, DWORD dwInfoLevel, LPCWSTR pwszName,
803                              LPVOID lpBuffer, LPDWORD lpdwBufferLength, LPDWORD lpdwIndex);
804     BOOL WinHttpQueryOption(HINTERNET hInternet, DWORD dwOption, LPVOID lpBuffer,
805                             LPDWORD lpdwBufferLength);
806 
807     BOOL WinHttpReadData(HINTERNET hRequest, LPVOID lpBuffer, DWORD dwNumberOfBytesToRead,
808                          LPDWORD lpdwNumberOfBytesRead);
809     BOOL WinHttpReceiveResponse(HINTERNET hRequest, LPVOID lpReserved);
810 
811     BOOL WinHttpSendRequest(HINTERNET hRequest, LPCWSTR pwszHeaders, DWORD dwHeadersLength,
812                             LPVOID lpOptional, DWORD dwOptionalLength, DWORD dwTotalLength, DWORD_PTR dwContext);
813 
814     BOOL WinHttpSetCredentials(HINTERNET hRequest, DWORD AuthTargets, DWORD AuthScheme,
815                                LPCWSTR pwszUserName, LPCWSTR pwszPassword, LPVOID pAuthParams);
816     BOOL WinHttpSetDefaultProxyConfiguration(WINHTTP_PROXY_INFO *pProxyInfo);
817     BOOL WinHttpSetOption(HINTERNET hInternet, DWORD dwOption, LPVOID lpBuffer, DWORD dwBufferLength);
818     WINHTTP_STATUS_CALLBACK WinHttpSetStatusCallback(HINTERNET hInternet,
819                                                      WINHTTP_STATUS_CALLBACK lpfnInternetCallback,
820                                                      DWORD dwNotificationFlags, DWORD_PTR dwReserved);
821     BOOL WinHttpSetTimeouts(HINTERNET hInternet, int dwResolveTimeout, int dwConnectTimeout,
822                             int dwSendTimeout, int dwReceiveTimeout);
823 
824     BOOL WinHttpTimeFromSystemTime(const SYSTEMTIME *pst, LPWSTR pwszTime);
825     BOOL WinHttpTimeToSystemTime(LPCWSTR pwszTime, SYSTEMTIME *pst);
826 
827     BOOL WinHttpWriteData(HINTERNET hRequest, LPCVOID lpBuffer, DWORD dwNumberOfBytesToWrite,
828                           LPDWORD lpdwNumberOfBytesWritten);
829 
830   // Version(Windows8) || Version(Windows2012):
831   static if (_WIN32_WINNT >= 0x602) {
832     DWORD WinHttpCreateProxyResolver(HINTERNET hSession, HINTERNET *phResolver);
833     void WinHttpFreeProxyResult(WINHTTP_PROXY_RESULT *pProxyResult);
834     DWORD WinHttpGetProxyForUrlEx(HINTERNET hResolver, PCWSTR pcwszUrl,
835                                   WINHTTP_AUTOPROXY_OPTIONS *pAutoProxyOptions, DWORD_PTR pContext);
836     DWORD WinHttpGetProxyResult(HINTERNET hResolver, WINHTTP_PROXY_RESULT *pProxyResult);
837     DWORD WinHttpResetAutoProxy(HINTERNET hSession, DWORD dwFlags);
838     DWORD WinHttpWebSocketClose(HINTERNET hWebSocket, USHORT usStatus, PVOID pvReason, DWORD dwReasonLength);
839     HINTERNET WinHttpWebSocketCompleteUpgrade(HINTERNET hRequest, DWORD_PTR pContext);
840     DWORD WinHttpWebSocketQueryCloseStatus(HINTERNET hWebSocket, USHORT *pusStatus, PVOID pvReason,
841                                            DWORD dwReasonLength, DWORD *pdwReasonLengthConsumed);
842     DWORD WinHttpWebSocketReceive(HINTERNET hWebSocket, PVOID pvBuffer,  DWORD dwBufferLength,
843                                   DWORD *pdwBytesRead, WINHTTP_WEB_SOCKET_BUFFER_TYPE *peBufferType);
844     DWORD WinHttpWebSocketSend(HINTERNET hWebSocket, WINHTTP_WEB_SOCKET_BUFFER_TYPE eBufferType,
845                                PVOID pvBuffer, DWORD dwBufferLength);
846     DWORD WinHttpWebSocketShutdown(HINTERNET hWebSocket, USHORT usStatus, PVOID pvReason, DWORD dwReasonLength);
847   }
848 }