Annotation of libwww/Library/src/HTReqMan.html, revision 2.34
2.1 frystyk 1: <HTML>
2: <HEAD>
2.32 frystyk 3: <!-- Changed by: Henrik Frystyk Nielsen, 15-Jul-1996 -->
2.23 frystyk 4: <TITLE>W3C Reference Library libwww Private Request Definition</TITLE>
2.1 frystyk 5: </HEAD>
6: <BODY>
2.23 frystyk 7: <H1>
8: Private Request Definition
9: </H1>
2.1 frystyk 10: <PRE>
11: /*
12: ** (c) COPYRIGHT MIT 1995.
13: ** Please first read the full copyright statement in the file COPYRIGH.
14: */
15: </PRE>
2.23 frystyk 16: <P>
17: This module is the private part of the request object. It has the functions
18: declarations that are private to the Library and that shouldn't be used by
19: applications. The module has been separated from the old HTAccess module.
20: See also the public part of the declarition in the <A HREF="HTReq.html">HTReq
21: Module</A>.
22: <P>
23: This module is implemented by <A HREF="HTReqMan.c">HTReqMan.c</A>, and it
24: is a part of the <A HREF="http://www.w3.org/pub/WWW/Library/"> W3C Reference
25: Library</A>.
2.1 frystyk 26: <PRE>
27: #ifndef HTREQMAN_H
28: #define HTREQMAN_H
29:
30: #include "<A HREF="HTReq.html">HTReq.h</A>"
31: #include "<A HREF="HTList.html">HTList.h</A>"
32: #include "<A HREF="HTFormat.html">HTFormat.h</A>"
33: #include "<A HREF="HTAnchor.html">HTAnchor.h</A>"
34: #include "<A HREF="HTMethod.html">HTMethod.h</A>"
35: #include "<A HREF="HTAABrow.html">HTAABrow.h</A>"
36: #include "<A HREF="HTStream.html">HTStream.h</A>"
37: #include "<A HREF="HTNet.html">HTNet.h</A>"
2.25 eric 38: #include "<A HREF="HTMIMPrs.html">HTMIMPrs.h</A>"
2.1 frystyk 39: </PRE>
2.23 frystyk 40: <P>
41: When a request is handled, all kinds of things about it need to be passed
42: along together with a request. It is intended to live as long as the request
43: is still active, but can be deleted as soon as it has terminated. Only the
44: anchor object stays around after the request itself is terminated.
2.1 frystyk 45: <PRE>
46: struct _HTRequest {
2.14 frystyk 47:
48: BOOL internal; /* Does the app knows about this one? */
49:
2.33 frystyk 50: time_t date; /* Time stamp when the request was issued */
51:
2.1 frystyk 52: HTMethod method;
53: HTReload reload;
54:
55: int retrys; /* Number of automatic reloads */
56: time_t retry_after; /* Absolut time for a retry */
57: HTNet * net; /* Information about socket etc. */
2.5 frystyk 58: HTPriority priority; /* Priority for this request */
2.1 frystyk 59: </PRE>
2.23 frystyk 60: <H3>
61: User Profile
62: </H3>
63: <P>
64: Each request can be assigned a <A HREF="HTUser.html">user profile</A> containing
65: information about this host and the user issuing the request.
66: <PRE>
67: HTUserProfile * userprofile;
68: </PRE>
69: <H3>
70: Accept headers
71: </H3>
2.1 frystyk 72: <PRE>
73: HTList * conversions;
74: BOOL conv_local;
75:
76: HTList * encodings;
77: BOOL enc_local;
78:
2.22 frystyk 79: HTList * ctes;
80: BOOL cte_local;
2.21 frystyk 81:
2.1 frystyk 82: HTList * languages;
83: BOOL lang_local;
84:
85: HTList * charsets;
86: BOOL char_local;
2.20 hallam 87:
88: HTList * befores;
89: BOOL befores_local;
90:
91: HTList * afters;
92: BOOL afters_local;
2.1 frystyk 93: </PRE>
2.23 frystyk 94: <H3>
95: Headers and header information
96: </H3>
2.1 frystyk 97: <PRE>
98: HTGnHd GenMask;
2.12 frystyk 99: HTRsHd ResponseMask;
2.1 frystyk 100: HTRqHd RequestMask;
101: HTEnHd EntityMask;
2.5 frystyk 102:
2.25 eric 103: HTMIMEParseSet * parseSet;
2.5 frystyk 104: BOOL pars_local;
105:
106: HTList * generators;
107: BOOL gens_local;
2.1 frystyk 108: </PRE>
2.23 frystyk 109: <H3>
110: Anchors
111: </H3>
2.1 frystyk 112: <PRE>
2.10 frystyk 113: HTParentAnchor * anchor; /* The Client anchor for this request */
114:
2.1 frystyk 115: HTChildAnchor * childAnchor; /* For element within the object */
116: HTParentAnchor * parentAnchor; /* For referer field */
117: </PRE>
2.23 frystyk 118: <H4>
119: Redirection
120: </H4>
121: <P>
122: If we get a redirection back then we return the new destination for this
123: request to the application using this anchor.
2.14 frystyk 124: <PRE>
125: HTAnchor * redirectionAnchor; /* Redirection URL */
126: </PRE>
2.23 frystyk 127: <H3>
128: Streams From Network to Application
129: </H3>
2.1 frystyk 130: <PRE>
131: HTStream * output_stream;
132: HTFormat output_format;
2.26 frystyk 133: BOOL connected;
2.1 frystyk 134:
135: HTStream* debug_stream;
136: HTFormat debug_format;
137: </PRE>
2.23 frystyk 138: <H3>
139: Streams From Application to Network
140: </H3>
2.1 frystyk 141: <PRE>
142: HTStream * input_stream;
143: HTFormat input_format;
144: </PRE>
2.23 frystyk 145: <H3>
146: Callback Function for getting data down the Input Stream
147: </H3>
2.1 frystyk 148: <PRE>
2.5 frystyk 149: HTPostCallback * PostCallback;
2.1 frystyk 150: </PRE>
2.23 frystyk 151: <H3>
152: Context Swapping
153: </H3>
2.1 frystyk 154: <PRE>
155: HTRequestCallback * callback;
156: void * context;
157: </PRE>
2.23 frystyk 158: <H3>
159: Other Flags
160: </H3>
2.1 frystyk 161: <PRE>
2.13 frystyk 162: BOOL preemptive;
2.1 frystyk 163: BOOL ContentNegotiation;
2.29 frystyk 164:
165: BOOL full_uri;
166: char * proxy;
2.30 frystyk 167:
168: int max_forwards;
2.1 frystyk 169: </PRE>
2.23 frystyk 170: <H3>
171: Error Manager
172: </H3>
2.1 frystyk 173: <PRE>
174: HTList * error_stack; /* List of errors */
175: </PRE>
2.23 frystyk 176: <H3>
177: PostWeb Information
178: </H3>
2.1 frystyk 179: <PRE>
180: HTRequest * source; /* Source for request or itself */
2.16 frystyk 181: HTParentAnchor * source_anchor; /* Source anchor or itself */
182:
2.1 frystyk 183: HTRequest * mainDestination; /* For the typical case */
184: HTList * destinations; /* List of related requests */
185: int destRequests; /* Number of destination requests */
186: int destStreams; /* Number of destination streams */
187: </PRE>
2.23 frystyk 188: <H3>
2.32 frystyk 189: Cache Control Directives
190: </H3>
191: <P>
192: This association list is a list of the cache control directives that are
193: to be sent as part of the <CODE>Cache-Control</CODE> header.
2.33 frystyk 194: <CODE>Cache-control</CODE> directives can be sent in both directions - we
195: keep the out-going ones here and the incoming becomes part of the
196: <A HREF="HTAnchor.html">anchor object</A>.
197: <PRE>
198: HTAssocList * cache_control;
199: </PRE>
200: <H3>
201: Original Header Values
202: </H3>
203: <P>
204: The cache uses (for the moment) the original header values when it creates
205: a cache entry. We can pass the headers to the cache manager using this list
206: <PRE>
207: HTAssocList * headers;
2.32 frystyk 208: </PRE>
209: <H3>
210: Connection Control Directives
211: </H3>
212: <P>
2.33 frystyk 213: This association list is a list of the connection control directives that
214: are to be sent as part of the <CODE>Connection</CODE> header.
215: <CODE>Connection</CODE> directives can be sent in both directions - that
216: is - from the server to the client and vise-verse. In order to separate outgoing
217: from incoming connections directives, we keep two lists - one for outgoing
218: and one for incoming.
219: <PRE>
220: HTAssocList * client_connection;
221: HTAssocList * server_connection;
2.32 frystyk 222: </PRE>
223: <H3>
2.23 frystyk 224: Access Authentication Information
225: </H3>
226: <P>
227: The <CODE>challenge</CODE> and the <CODE>credentials</CODE> entries are use
2.27 frystyk 228: by the authentication parsers and generators respectively.
2.28 frystyk 229: <PRE> char * realm; /* Current realm */
2.27 frystyk 230: char * scheme; /* Current scheme */
2.18 frystyk 231:
2.17 frystyk 232: HTAssocList * challenge; /* Challenge received by client */
233: HTAssocList * credentials; /* Credentials received by server */
2.1 frystyk 234: </PRE>
2.23 frystyk 235: <H3>
2.28 frystyk 236: Protocol Extension Protocol (PEP) Information
237: </H3>
2.31 frystyk 238: <PRE>
239: HTAssocList * protocol;
2.28 frystyk 240: HTAssocList * protocol_info;
241: HTAssocList * protocol_request;
2.33 frystyk 242: </PRE>
243: <P>
244: As a small alternative to the PEP protocol headers, we also support the extension
245: header which works pretty much the same way but is somewhat simpler in use.
246: <PRE>
247: HTAssocList * client_extension;
248: HTAssocList * server_extension;
2.28 frystyk 249: </PRE>
2.1 frystyk 250: <PRE>
251: };
252: </PRE>
2.23 frystyk 253: <H2>
254: Post Web Management
255: </H2>
256: <P>
257: These functions are mainly used internally in the Library but there is no
258: reason for them not to be public.
2.1 frystyk 259: <PRE>
260: extern BOOL HTRequest_addDestination (HTRequest * src, HTRequest * dest);
261: extern BOOL HTRequest_removeDestination (HTRequest * dest);
2.14 frystyk 262: extern BOOL HTRequest_destinationsReady (HTRequest * me);
2.1 frystyk 263:
264: extern BOOL HTRequest_linkDestination (HTRequest * dest);
265: extern BOOL HTRequest_unlinkDestination (HTRequest * dest);
266:
267: extern BOOL HTRequest_removePostWeb (HTRequest * me);
268: extern BOOL HTRequest_killPostWeb (HTRequest * me);
269:
270: #define HTRequest_mainDestination(me) \
2.23 frystyk 271: ((me) && (me)->source ? (me)->source->mainDestination : NULL)
2.1 frystyk 272: #define HTRequest_isDestination(me) \
2.23 frystyk 273: ((me) && (me)->source && (me) != (me)->source)
2.1 frystyk 274: #define HTRequest_isMainDestination(me) \
2.23 frystyk 275: ((me) && (me)->source && \
276: (me) == (me)->source->mainDestination)
2.1 frystyk 277: #define HTRequest_isSource(me) \
2.23 frystyk 278: ((me) && (me)->source && (me) == (me)->source)
2.1 frystyk 279: </PRE>
2.23 frystyk 280: <P>
2.1 frystyk 281: End of Declaration
282: <PRE>
283: #endif /* HTREQMAN_H */
284: </PRE>
2.23 frystyk 285: <P>
286: <HR>
2.21 frystyk 287: <ADDRESS>
2.34 ! eric 288: @(#) $Id: HTReqMan.html,v 2.33 1996/09/08 22:08:44 frystyk Exp $
2.21 frystyk 289: </ADDRESS>
2.23 frystyk 290: </BODY></HTML>
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