Annotation of libwww/Library/src/HTNet.c, revision 2.63
2.23 frystyk 1: /* HTNet.c
2: ** ASYNCRONOUS SOCKET MANAGEMENT
2.1 frystyk 3: **
2.10 frystyk 4: ** (c) COPYRIGHT MIT 1995.
2.4 frystyk 5: ** Please first read the full copyright statement in the file COPYRIGH.
2.63 ! eric 6: ** @(#) $Id: HTNet.c,v 2.62 1996/05/01 12:40:37 eric Exp $
2.4 frystyk 7: **
8: ** This is the implementation of the internal library multithreading
2.1 frystyk 9: ** functions. This includes an interrupt handler and a event loop.
10: **
11: ** History:
2.14 frystyk 12: ** 12 June 94 Written by Henrik Frystyk, frystyk@w3.org
2.17 frystyk 13: ** 31 May 95 Charlie Brooks cbrooks@osf.org
14: **
2.1 frystyk 15: */
16:
2.9 frystyk 17: /* Implemention dependent include files */
2.52 frystyk 18: #include "sysdep.h"
2.9 frystyk 19:
2.1 frystyk 20: /* Library include files */
2.59 frystyk 21: #include "WWWUtil.h"
2.16 frystyk 22: #include "HTProt.h"
2.1 frystyk 23: #include "HTError.h"
2.25 frystyk 24: #include "HTAlert.h"
2.37 frystyk 25: #include "HTParse.h"
2.59 frystyk 26: #include "HTTrans.h"
2.23 frystyk 27: #include "HTReqMan.h"
2.17 frystyk 28: #include "HTEvntrg.h"
2.23 frystyk 29: #include "HTStream.h"
2.24 frystyk 30: #include "HTNetMan.h" /* Implemented here */
2.1 frystyk 31:
2.23 frystyk 32: #ifndef HT_MAX_SOCKETS
33: #define HT_MAX_SOCKETS 6
34: #endif
35:
2.33 frystyk 36: typedef struct _NetCall {
2.30 frystyk 37: HTNetCallback * cbf;
2.60 frystyk 38: void * param; /* Local context */
2.23 frystyk 39: int status; /* Status associated with this callback */
2.33 frystyk 40: } NetCall;
2.23 frystyk 41:
42: struct _HTStream {
2.52 frystyk 43: const HTStreamClass * isa;
2.23 frystyk 44: /* ... */
45: };
46:
47: PRIVATE int HTMaxActive = HT_MAX_SOCKETS; /* Max active requests */
2.33 frystyk 48: PRIVATE HTList *HTBefore = NULL; /* List of call back functions */
49: PRIVATE HTList *HTAfter = NULL; /* List of call back functions */
2.24 frystyk 50:
2.23 frystyk 51: PRIVATE HTList *HTNetActive = NULL; /* List of active requests */
52: PRIVATE HTList *HTNetPending = NULL; /* List of pending requests */
2.24 frystyk 53: PRIVATE HTList *HTNetPersistent = NULL; /* List of persistent connections */
2.1 frystyk 54:
55: /* ------------------------------------------------------------------------- */
56:
2.23 frystyk 57: /*
58: ** Set the max number of simultanous sockets. Default is HT_MAX_SOCKETS
2.1 frystyk 59: */
2.23 frystyk 60: PUBLIC BOOL HTNet_setMaxSocket (int newmax)
61: {
62: if (newmax > 0) {
63: HTMaxActive = newmax;
64: return YES;
65: }
66: return NO;
67: }
68:
69: PUBLIC int HTNet_maxSocket (void)
2.1 frystyk 70: {
2.23 frystyk 71: return HTMaxActive;
72: }
73:
74: /* ------------------------------------------------------------------------- */
2.33 frystyk 75: /* Call Back Functions */
2.23 frystyk 76: /* ------------------------------------------------------------------------- */
77:
2.33 frystyk 78: /* HTNetCall_add
79: ** -------------
80: ** Register a call back function that is to be called on every request.
81: ** Several call back functions can be registered
2.23 frystyk 82: ** in which case all of them are called in the order of which they
83: ** were registered.
84: **
85: ** The status signifies which call back function to call depending of the
86: ** result of the request. This can be
87: **
88: ** HT_ERROR An error occured
89: ** HT_LOADED The document was loaded
90: ** HT_NO_DATA OK, but no data
2.33 frystyk 91: ** HT_REDIRECT If we received a redirection
2.23 frystyk 92: ** HT_RETRY Retry request after at a later time
93: ** HT_ALL All of above
94: */
2.60 frystyk 95: PUBLIC BOOL HTNetCall_add (HTList * list, HTNetCallback * cbf,
96: void * param, int status)
2.23 frystyk 97: {
2.58 hallam 98: if (CORE_TRACE)
2.60 frystyk 99: HTTrace("Call Add.... HTNetCallback %p with context %p\n",
100: (void *) cbf, param);
2.33 frystyk 101: if (list && cbf) {
2.49 frystyk 102: NetCall *me;
103: if ((me = (NetCall *) HT_CALLOC(1, sizeof(NetCall))) == NULL)
104: HT_OUTOFMEM("HTNetCall_add");
2.33 frystyk 105: me->cbf = cbf;
2.60 frystyk 106: me->param = param;
2.33 frystyk 107: me->status = status;
108: return HTList_addObject(list, (void *) me);
2.23 frystyk 109: }
110: return NO;
111: }
112:
2.33 frystyk 113: /* HTNetCall_delete
114: ** ----------------
115: ** Unregister a call back function from a list
2.23 frystyk 116: */
2.33 frystyk 117: PUBLIC BOOL HTNetCall_delete (HTList * list, HTNetCallback *cbf)
2.23 frystyk 118: {
2.58 hallam 119: if (CORE_TRACE)
2.50 eric 120: HTTrace("Call delete HTNetCallback %p\n", (void *) cbf);
2.33 frystyk 121: if (list && cbf) {
122: HTList *cur = list;
123: NetCall *pres;
124: while ((pres = (NetCall *) HTList_nextObject(cur))) {
2.23 frystyk 125: if (pres->cbf == cbf) {
2.33 frystyk 126: HTList_removeObject(list, (void *) pres);
2.49 frystyk 127: HT_FREE(pres);
2.23 frystyk 128: return YES;
129: }
130: }
131: }
132: return NO;
133: }
2.1 frystyk 134:
2.33 frystyk 135: /* HTNetCall_deleteAll
2.23 frystyk 136: ** -------------------
137: ** Unregisters all call back functions
138: */
2.33 frystyk 139: PUBLIC BOOL HTNetCall_deleteAll (HTList * list)
2.23 frystyk 140: {
2.58 hallam 141: if (CORE_TRACE)
2.50 eric 142: HTTrace("Call delete All callback functions\n");
2.33 frystyk 143: if (list) {
144: HTList *cur = list;
145: NetCall *pres;
146: while ((pres = (NetCall *) HTList_nextObject(cur))) {
147: HTList_removeObject(list, (void *) pres);
2.49 frystyk 148: HT_FREE(pres);
2.23 frystyk 149: }
2.33 frystyk 150: HTList_delete(list);
2.23 frystyk 151: return YES;
152: }
153: return NO;
154: }
155:
2.33 frystyk 156: /* HTNetCall_execute
157: ** -----------------
2.23 frystyk 158: ** Call all the call back functions registered in the list IF not the
159: ** status is HT_IGNORE.
160: ** The callback functions are called in the order of which they
161: ** were registered. At the moment an application callback function is
162: ** called, it can free the request object - it is no longer used by the
163: ** Library.
2.33 frystyk 164: ** Returns what the last callback function returns
2.23 frystyk 165: */
2.33 frystyk 166: PUBLIC int HTNetCall_execute (HTList * list, HTRequest * request, int status)
2.23 frystyk 167: {
2.33 frystyk 168: int ret = HT_OK;
169: if (list && request && status != HT_IGNORE) {
170: int cnt = HTList_count(list);
2.23 frystyk 171: while (--cnt >= 0) {
2.33 frystyk 172: NetCall *pres = (NetCall *) HTList_objectAt(list, cnt);
2.23 frystyk 173: if (pres && (pres->status == status || pres->status == HT_ALL)) {
2.58 hallam 174: if (CORE_TRACE)
2.50 eric 175: HTTrace("Net callback %p (request=%p, status=%d)\n",
2.23 frystyk 176: (void *) pres->cbf, request, status);
2.60 frystyk 177: if ((ret=(*(pres->cbf))(request, pres->param,status)) != HT_OK)
178: break;
2.23 frystyk 179: }
180: }
2.1 frystyk 181: }
2.33 frystyk 182: return ret;
183: }
184:
185: /*
186: ** Global set of callback functions BEFORE the request is issued
187: ** list can be NULL
188: */
189: PUBLIC BOOL HTNet_setBefore (HTList *list)
190: {
2.57 eric 191: /* if (HTBefore) HTNetCall_deleteAll(HTBefore); */
2.33 frystyk 192: HTBefore = list;
193: return YES;
194: }
195:
196: PUBLIC HTList * HTNet_before (void)
197: {
198: return HTBefore;
199: }
200:
201: PUBLIC int HTNet_callBefore (HTRequest *request, int status)
202: {
2.58 hallam 203: int ret;
204: BOOL override = NO;
205: HTList * befores;
206:
207: if ((befores = HTRequest_before(request, &override))) {
208: if ((ret = HTNetCall_execute(befores, request, status)) != HT_OK)
209: return ret;
210: }
211: if (override)
212: return HT_OK;
2.33 frystyk 213: return HTNetCall_execute(HTBefore, request, status);
214: }
215:
2.60 frystyk 216: PUBLIC BOOL HTNetCall_addBefore (HTNetCallback * cbf, void * param, int status)
2.33 frystyk 217: {
218: if (!HTBefore) HTBefore = HTList_new();
2.60 frystyk 219: return HTNetCall_add(HTBefore, cbf, param, status);
2.33 frystyk 220: }
221:
222: /*
223: ** Global set of callback functions AFTER the request is issued
224: ** list can be NULL
225: */
226: PUBLIC BOOL HTNet_setAfter (HTList *list)
227: {
2.57 eric 228: /* if (HTAfter) HTNetCall_deleteAll(HTAfter); */
2.33 frystyk 229: HTAfter = list;
230: return YES;
231: }
232:
233: PUBLIC HTList * HTNet_after (void)
234: {
235: return HTAfter;
236: }
237:
238: PUBLIC int HTNet_callAfter (HTRequest *request, int status)
239: {
2.58 hallam 240: int ret;
241: BOOL override = NO;
242: HTList * afters;
243:
244: if ((afters = HTRequest_after(request, &override))) {
245: if ((ret = HTNetCall_execute(afters, request, status)) != HT_OK)
246: return ret;
247: }
248: if (override)
249: return HT_OK;
2.33 frystyk 250: return HTNetCall_execute(HTAfter, request, status);
251: }
252:
2.60 frystyk 253: PUBLIC BOOL HTNetCall_addAfter (HTNetCallback * cbf, void * param, int status)
2.33 frystyk 254: {
255: if (!HTAfter) HTAfter = HTList_new();
2.60 frystyk 256: return HTNetCall_add(HTAfter, cbf, param, status);
2.1 frystyk 257: }
258:
2.23 frystyk 259: /* ------------------------------------------------------------------------- */
260: /* Request Queue */
261: /* ------------------------------------------------------------------------- */
2.1 frystyk 262:
2.23 frystyk 263: /* HTNet_activeQueue
264: ** -----------------
265: ** Returns the list of active requests that are currently having an open
266: ** connection.
267: ** Returns list of HTNet objects or NULL if error
2.1 frystyk 268: */
2.23 frystyk 269: PUBLIC HTList *HTNet_activeQueue (void)
270: {
271: return HTNetActive;
272: }
2.17 frystyk 273:
2.40 frystyk 274: /* HTNet_idle
275: ** ----------
276: ** Returns whether there are active requests
2.28 frystyk 277: */
2.29 frystyk 278: PUBLIC BOOL HTNet_idle (void)
2.28 frystyk 279: {
2.29 frystyk 280: return HTList_isEmpty(HTNetActive);
2.28 frystyk 281: }
282:
2.40 frystyk 283: /* HTNet_empty
284: ** -----------
285: ** Returns whether there are requests registered or not
286: */
287: PUBLIC BOOL HTNet_isEmpty (void)
288: {
289: return (HTList_isEmpty(HTNetActive) && HTList_isEmpty(HTNetPersistent) &&
290: HTList_isEmpty(HTNetPending));
291: }
292:
2.23 frystyk 293: /* HTNet_pendingQueue
294: ** ------------------
295: ** Returns the list of pending requests that are waiting to become active
296: ** Returns list of HTNet objects or NULL if error
297: */
298: PUBLIC HTList *HTNet_pendingQueue (void)
2.1 frystyk 299: {
2.23 frystyk 300: return HTNetPending;
2.1 frystyk 301: }
302:
2.23 frystyk 303: /* ------------------------------------------------------------------------- */
304: /* Creation and deletion methods */
305: /* ------------------------------------------------------------------------- */
306:
2.27 frystyk 307: /* HTNet_duplicate
308: ** ---------------
309: ** Creates a new HTNet object as a duplicate of the same request.
310: ** Returns YES if OK, else NO
311: ** BUG: We do not check if we have a socket free!
312: */
2.43 frystyk 313: PUBLIC HTNet * HTNet_dup (HTNet * src)
2.27 frystyk 314: {
2.43 frystyk 315: HTNet * me;
2.54 eric 316: if (!src) return 0;
2.49 frystyk 317: if ((me = (HTNet *) HT_MALLOC(sizeof(HTNet))) == NULL)
318: HT_OUTOFMEM("HTNet_dup");
2.44 frystyk 319: memcpy((void *) me, src, sizeof(HTNet));
2.43 frystyk 320: return me;
2.27 frystyk 321: }
322:
2.30 frystyk 323: /* HTNet_priority
324: ** --------------
325: ** Get the current priority of the Net object
326: */
327: PUBLIC HTPriority HTNet_priority (HTNet * net)
328: {
2.51 frystyk 329: return (net ? net->priority : HT_PRIORITY_INV);
2.30 frystyk 330: }
331:
332: /* HTNet_setPriority
333: ** -----------------
334: ** Set the current priority of the Net object
335: ** This will change the priority next time the thread is blocked
336: */
337: PUBLIC BOOL HTNet_setPriority (HTNet * net, HTPriority priority)
338: {
339: if (net) {
340: net->priority = priority;
341: return YES;
342: }
343: return NO;
344: }
345:
2.36 frystyk 346: /* create_object
347: ** -------------
348: ** Creates an HTNet object
349: */
350: PRIVATE HTNet * create_object (HTRequest * request)
351: {
352: HTNet * me;
2.49 frystyk 353: if ((me = (HTNet *) HT_CALLOC(1, sizeof(HTNet))) == NULL)
354: HT_OUTOFMEM("HTNet_new");
2.36 frystyk 355: me->request = request;
356: request->net = me;
2.37 frystyk 357: me->tcpstate = TCP_BEGIN;
2.47 frystyk 358: if (!HTNetActive) HTNetActive = HTList_new();
2.36 frystyk 359: return me;
360: }
361:
2.37 frystyk 362: /* HTNet_new
363: ** ---------
364: ** This function creates a new HTNet object and assigns the socket number
365: ** to it. This is intended to be used when you are going to listen on a
366: ** socket using the HTDoListen() function in HTTCP.c. The function do NOT
367: ** call any of the callback functions.
368: ** Returns new object or NULL on error
369: */
370: PUBLIC HTNet * HTNet_new (HTRequest * request, SOCKET sockfd)
371: {
372: HTNet * me;
2.58 hallam 373: if (CORE_TRACE) HTTrace("HTNet_new... Create empty Net object\n");
2.37 frystyk 374: if (!request || sockfd==INVSOC) return NULL;
375: if ((me = create_object(request)) == NULL) return NULL;
2.45 frystyk 376: me->preemptive = request->preemptive;
2.37 frystyk 377: me->priority = request->priority;
378: me->sockfd = sockfd;
379: return me;
380: }
381:
382: /* HTNet_newServer
383: ** ---------------
384: ** Create a new HTNet object as a new request to be handled. If we have
385: ** more than HTMaxActive connections already then return NO.
386: ** Returns YES if OK, else NO
387: */
2.46 frystyk 388: PUBLIC BOOL HTNet_newServer (HTRequest * request, SOCKET sockfd, char * access)
2.37 frystyk 389: {
390: HTNet * me;
391: HTProtocol * protocol;
392: if (!request) return NO;
393:
394: /* Check if we can start the request, else return immediately */
395: if (HTList_count(HTNetActive) > HTMaxActive) {
2.60 frystyk 396: if (CORE_TRACE) HTTrace("HTNet new... NO SOCKET AVAILABLE\n");
2.61 eric 397: HTNet_callAfter(request, HT_RETRY);
2.37 frystyk 398: return YES;
399: }
400:
401: /* Find a protocol object for this access scheme */
2.46 frystyk 402: protocol = HTProtocol_find(request, access);
2.37 frystyk 403:
404: /* Create new net object and bind it to the request object */
405: if ((me = create_object(request)) == NULL) return NO;
2.45 frystyk 406: me->preemptive = (HTProtocol_preemptive(protocol) || request->preemptive);
2.59 frystyk 407: me->protocol = protocol;
2.37 frystyk 408: me->priority = request->priority;
2.38 frystyk 409: me->sockfd = sockfd;
2.37 frystyk 410: if (!(me->cbf = HTProtocol_server(protocol))) {
2.58 hallam 411: if (CORE_TRACE) HTTrace("HTNet_new... NO CALL BACK FUNCTION!\n");
2.49 frystyk 412: HT_FREE(me);
2.37 frystyk 413: return NO;
414: }
415: request->retrys++;
416:
417: /* Start the server request */
418: HTList_addObject(HTNetActive, (void *) me);
2.58 hallam 419: if (CORE_TRACE)
2.50 eric 420: HTTrace("HTNet_new... starting SERVER request %p with net object %p\n", request, me);
2.37 frystyk 421: (*(me->cbf))(me->sockfd, request, FD_NONE);
422: return YES;
423: }
2.36 frystyk 424:
2.30 frystyk 425: /* HTNet_new
426: ** ---------
2.23 frystyk 427: ** Create a new HTNet object as a new request to be handled. If we have
428: ** more than HTMaxActive connections already then put this into the
429: ** pending queue, else start the request by calling the call back
430: ** function registered with this access method.
431: ** Returns YES if OK, else NO
432: */
2.37 frystyk 433: PUBLIC BOOL HTNet_newClient (HTRequest * request)
2.23 frystyk 434: {
2.33 frystyk 435: int status;
2.59 frystyk 436: HTNet * me = NULL;
437: HTProtocol * protocol = NULL;
438: HTTransport * tp = NULL;
2.37 frystyk 439: char * physical = NULL;
2.27 frystyk 440: if (!request) return NO;
2.33 frystyk 441: /*
442: ** First we do all the "BEFORE" callbacks in order to see if we are to
443: ** continue with this request or not. If we receive a callback status
444: ** that is NOT HT_OK then jump directly to the after callbacks and return
445: */
2.58 hallam 446: if ((status = HTNet_callBefore(request, HT_OK)) != HT_OK) {
447: HTNet_callAfter(request, status);
2.33 frystyk 448: return YES;
449: }
450:
2.36 frystyk 451: /*
452: ** If no translation was provided by the application then use the anchor
453: ** address directly
454: */
2.33 frystyk 455: if (!(physical = HTAnchor_physical(request->anchor)) || !*physical) {
2.36 frystyk 456: char * addr = HTAnchor_address((HTAnchor *) request->anchor);
2.58 hallam 457: if (CORE_TRACE) HTTrace("HTNet New... Using default address\n");
2.36 frystyk 458: HTAnchor_setPhysical(request->anchor, addr);
2.37 frystyk 459: physical = HTAnchor_physical(request->anchor);
2.49 frystyk 460: HT_FREE(addr);
2.33 frystyk 461: }
462:
2.37 frystyk 463: /* Find a protocol object for this access scheme */
464: {
465: char * access = HTParse(physical, "", PARSE_ACCESS);
466: if ((protocol = HTProtocol_find(request, access)) == NULL) {
2.58 hallam 467: if (CORE_TRACE) HTTrace("HTNet_new... NO PROTOCOL OBJECT\n");
2.49 frystyk 468: HT_FREE(access);
2.37 frystyk 469: return NO;
470: }
2.49 frystyk 471: HT_FREE(access);
2.37 frystyk 472: }
2.59 frystyk 473:
474: /* Find a transport object for this protocol */
475: tp = HTTransport_find(request, HTProtocol_transport(protocol));
476: if (tp == NULL) {
2.60 frystyk 477: if (CORE_TRACE) HTTrace("HTNet....... NO TRANSPORT OBJECT\n");
2.59 frystyk 478: return NO;
479: }
480:
2.23 frystyk 481: /* Create new net object and bind it to the request object */
2.36 frystyk 482: if ((me = create_object(request)) == NULL) return NO;
2.45 frystyk 483: me->preemptive = (HTProtocol_preemptive(protocol) || request->preemptive);
2.30 frystyk 484: me->priority = request->priority;
2.23 frystyk 485: me->sockfd = INVSOC;
2.59 frystyk 486: me->protocol = protocol;
487: me->transport = tp;
2.37 frystyk 488: if (!(me->cbf = HTProtocol_client(protocol))) {
2.58 hallam 489: if (CORE_TRACE) HTTrace("HTNet_new... NO CALL BACK FUNCTION!\n");
2.49 frystyk 490: HT_FREE(me);
2.23 frystyk 491: return NO;
492: }
2.25 frystyk 493: request->retrys++;
2.23 frystyk 494:
495: /*
496: ** Check if we can start the request, else put it into pending queue
497: ** If so then call the call back function associated with the anchor.
498: ** We use the INVSOC as we don't have a valid socket yet!
499: */
500: if (HTList_count(HTNetActive) < HTMaxActive) {
501: HTList_addObject(HTNetActive, (void *) me);
2.58 hallam 502: if (CORE_TRACE)
2.50 eric 503: HTTrace("HTNet_new... starting request %p (retry=%d) with net object %p\n",
2.43 frystyk 504: request, request->retrys, me);
2.25 frystyk 505: (*(me->cbf))(me->sockfd, request, FD_NONE);
2.23 frystyk 506: } else {
2.35 frystyk 507: HTAlertCallback *cbf = HTAlert_find(HT_PROG_WAIT);
2.23 frystyk 508: if (!HTNetPending) HTNetPending = HTList_new();
2.58 hallam 509: if (CORE_TRACE)
2.50 eric 510: HTTrace("HTNet_new... request %p registered as pending\n",
2.25 frystyk 511: request);
2.35 frystyk 512: if (cbf) (*cbf)(request, HT_PROG_WAIT, HT_MSG_NULL, NULL, NULL, NULL);
2.25 frystyk 513: HTList_addObject(HTNetPending, (void *) me);
2.23 frystyk 514: }
2.36 frystyk 515: return YES;
516: }
517:
2.23 frystyk 518: /* delete_object
519: ** -------------
520: ** Deletes an HTNet object
2.40 frystyk 521: ** Return YES if OK, else NO
2.15 frystyk 522: */
2.23 frystyk 523: PRIVATE BOOL delete_object (HTNet *net, int status)
2.15 frystyk 524: {
2.58 hallam 525: if (CORE_TRACE)
2.50 eric 526: HTTrace("HTNet_delete Remove net object %p\n", net);
2.23 frystyk 527: if (net) {
528:
529: /* Free stream with data FROM network to application */
2.59 frystyk 530: #if 0
2.23 frystyk 531: if (net->target) {
532: if (status == HT_INTERRUPTED)
533: (*net->target->isa->abort)(net->target, NULL);
534: else
535: (*net->target->isa->_free)(net->target);
2.48 frystyk 536: net->target = NULL;
2.23 frystyk 537: }
2.59 frystyk 538: #endif
2.23 frystyk 539:
540: /* Close socket */
2.62 eric 541: if (net->channel) {
2.45 frystyk 542: HTEvent_UnRegister(net->sockfd, (SockOps) FD_ALL);
2.62 eric 543: HTChannel_delete(net->channel);
2.59 frystyk 544: if (HTHost_channel(net->host) == NULL) {
545: if (CORE_TRACE)
546: HTTrace("HTNet_delete closing %d\n", net->sockfd);
2.24 frystyk 547: } else {
2.59 frystyk 548: if (CORE_TRACE)
549: HTTrace("HTNet_delete keeping %d\n", net->sockfd);
2.25 frystyk 550: /* Here we should probably use a low priority */
2.62 eric 551: HTEvent_Register(net->sockfd, 0, (SockOps) FD_READ,
2.59 frystyk 552: HTHost_catchClose, net->priority);
2.24 frystyk 553: }
2.62 eric 554: HTChannel_downSemaphore(net->channel);
2.63 ! eric 555: net->channel = NULL;
2.23 frystyk 556: }
557: if (net->request)
558: net->request->net = NULL; /* Break link to request */
2.49 frystyk 559: HT_FREE(net);
2.23 frystyk 560: return status ? NO : YES;
561: }
562: return NO;
563: }
564:
565: /* HTNet_delete
566: ** ------------
567: ** Deletes the HTNet object from the list of active requests and calls
568: ** any registered call back functions IF not the status is HT_IGNORE.
569: ** This is used if we have internal requests that the app doesn't know
570: ** about. We also see if we have pending requests that can be started
571: ** up now when we have a socket free.
572: ** The callback functions are called in the reverse order of which they
573: ** were registered (last one first)
2.40 frystyk 574: ** Return YES if OK, else NO
2.23 frystyk 575: */
576: PUBLIC BOOL HTNet_delete (HTNet * net, int status)
577: {
2.58 hallam 578: if (CORE_TRACE)
2.50 eric 579: HTTrace("HTNetDelete. Object and call callback functions\n");
2.23 frystyk 580: if (HTNetActive && net) {
2.36 frystyk 581: SOCKET cs = net->sockfd; /* Current sockfd */
2.23 frystyk 582:
583: /* Remove object and call callback functions */
584: HTRequest *request = net->request;
2.42 frystyk 585: if (HTList_removeObject(HTNetActive, (void *) net) != YES)
2.58 hallam 586: if (CORE_TRACE)
2.50 eric 587: HTTrace("HTNetDelete. %p not registered!\n", net);
2.23 frystyk 588: delete_object(net, status);
2.61 eric 589: HTNet_callAfter(request, status);
2.23 frystyk 590:
2.25 frystyk 591: /*
592: ** See first if we have a persistent request queued up for this socket
593: ** If not then see if there is a pending request
594: */
595: if (HTNetPersistent) {
596: HTList *cur = HTNetPersistent;
597: HTNet *next;
598: while ((next = (HTNet *) HTList_nextObject(cur))) {
599: if (next->sockfd == cs) {
2.58 hallam 600: if (CORE_TRACE)
2.50 eric 601: HTTrace("HTNet delete Launch request %p on WARM socket %d (net object %p)\n",
2.39 frystyk 602: next->request, next->sockfd, next);
2.28 frystyk 603: HTList_addObject(HTNetActive, (void *) next);
604: HTList_removeObject(HTNetPersistent, (void *) next);
2.41 frystyk 605: (*(next->cbf))(next->sockfd, next->request, FD_WRITE);
2.25 frystyk 606: break;
607: }
608: }
609: } else if (HTList_count(HTNetActive) < HTMaxActive &&
610: HTList_count(HTNetPending)) {
2.23 frystyk 611: HTNet *next = (HTNet *) HTList_removeFirstObject(HTNetPending);
612: if (next) {
613: HTList_addObject(HTNetActive, (void *) next);
2.58 hallam 614: if (CORE_TRACE)
2.50 eric 615: HTTrace("HTNet delete launch PENDING request %p\n",
2.23 frystyk 616: next->request);
617: (*(next->cbf))(INVSOC, next->request, FD_NONE);
618: }
619: }
620: return YES;
621: }
622: return NO;
623: }
624:
625: /* HTNet_deleteAll
626: ** ---------------
627: ** Deletes all HTNet object that might either be active or pending
2.25 frystyk 628: ** We DO NOT call the call back functions - A crude way of saying goodbye!
2.23 frystyk 629: */
630: PUBLIC BOOL HTNet_deleteAll (void)
631: {
2.58 hallam 632: if (CORE_TRACE)
2.50 eric 633: HTTrace("HTNetDelete. Remove all Net objects, NO callback\n");
2.25 frystyk 634: if (HTNetPersistent) {
635: HTList *cur = HTNetPersistent;
636: HTNet *pres;
637: while ((pres = (HTNet *) HTList_nextObject(cur))) {
638: pres->sockfd = INVSOC; /* Don't close it more than once */
639: delete_object(pres, HT_INTERRUPTED);
640: }
641: HTList_delete(HTNetPersistent);
642: HTNetPersistent = NULL;
643: }
2.23 frystyk 644: if (HTNetPending) {
645: HTList *cur = HTNetPending;
646: HTNet *pres;
647: while ((pres = (HTNet *) HTList_nextObject(cur)))
648: delete_object(pres, HT_INTERRUPTED);
649: HTList_delete(HTNetPending);
650: HTNetPending = NULL;
651: }
652: if (HTNetActive) {
653: HTList *cur = HTNetActive;
654: HTNet *pres;
655: while ((pres = (HTNet *) HTList_nextObject(cur)))
656: delete_object(pres, HT_INTERRUPTED);
657: HTList_delete(HTNetActive);
658: HTNetActive = NULL;
659: }
660: return NO;
2.15 frystyk 661: }
662:
2.25 frystyk 663: /* HTNet_wait
664: ** ----------
665: ** Let a net object wait for a persistent socket. It will be launched
666: ** from the HTNet_delete() function
2.40 frystyk 667: ** Return YES if OK, else NO
2.25 frystyk 668: */
669: PUBLIC BOOL HTNet_wait (HTNet *net)
670: {
671: if (net) {
2.58 hallam 672: if (CORE_TRACE)
2.50 eric 673: HTTrace("HTNet_wait.. request %p is waiting for presistent socket %d\n",
2.40 frystyk 674: net->request, net->sockfd);
675:
676: /* Take it out of the active queue and add it to persistent queue */
677: if (HTList_removeObject(HTNetActive, (void *) net) != YES) {
2.58 hallam 678: if (CORE_TRACE) HTTrace("HTNet_wait.. not registered!\n");
2.40 frystyk 679: return NO;
680: }
2.25 frystyk 681: if (!HTNetPersistent) HTNetPersistent = HTList_new();
2.40 frystyk 682: return HTList_addObject(HTNetPersistent, (void *) net);
2.25 frystyk 683: }
684: return NO;
685: }
686:
2.23 frystyk 687: /* ------------------------------------------------------------------------- */
688: /* Killing requests */
689: /* ------------------------------------------------------------------------- */
690:
691: /* HTNet_kill
692: ** ----------
693: ** Kill the request by calling the call back function with a request for
694: ** closing the connection. Does not remove the object. This is done by
695: ** HTNet_delete() function which is called by the load routine.
696: ** Returns OK if success, NO on error
697: */
698: PUBLIC BOOL HTNet_kill (HTNet * me)
699: {
700: if (HTNetActive && me) {
2.25 frystyk 701: HTList *cur = HTNetActive;
2.23 frystyk 702: HTNet *pres;
2.25 frystyk 703: while ((pres = (HTNet *) HTList_nextObject(cur))) {
2.23 frystyk 704: if (pres == me) {
2.25 frystyk 705: (*(pres->cbf))(pres->sockfd, pres->request, FD_CLOSE);
2.23 frystyk 706: return YES;
707: }
708: }
709: }
2.58 hallam 710: if (CORE_TRACE)
2.50 eric 711: HTTrace("HTNet_kill.. object %p is not registered\n", me);
2.23 frystyk 712: return NO;
713: }
714:
715: /* HTNet_killAll
716: ** -------------
717: ** Kills all registered (active+pending) requests by calling the call
718: ** back function with a request for closing the connection. We do not
719: ** remove the HTNet object as it is done by HTNet_delete().
720: ** Returns OK if success, NO on error
721: */
722: PUBLIC BOOL HTNet_killAll (void)
723: {
724: HTNet *pres;
2.58 hallam 725: if (CORE_TRACE)
2.50 eric 726: HTTrace("HTNet_kill.. ALL registered requests!!!\n");
2.23 frystyk 727:
2.25 frystyk 728: /* We start off in persistent queue so we avoid racing */
729: if (HTNetPersistent) {
730: while ((pres = (HTNet *) HTList_lastObject(HTNetPersistent)) != NULL) {
731: pres->sockfd = INVSOC;
732: (*(pres->cbf))(pres->sockfd, pres->request, FD_CLOSE);
733: HTList_removeObject(HTNetPersistent, pres);
734: }
735: }
2.23 frystyk 736: if (HTNetPending) {
737: while ((pres = (HTNet *) HTList_lastObject(HTNetPending)) != NULL) {
2.25 frystyk 738: (*(pres->cbf))(pres->sockfd, pres->request, FD_CLOSE);
2.23 frystyk 739: HTList_removeObject(HTNetPending, pres);
740: }
741: }
742: if (HTNetActive) {
743: while ((pres = (HTNet *) HTList_lastObject(HTNetActive)) != NULL)
2.25 frystyk 744: (*(pres->cbf))(pres->sockfd, pres->request, FD_CLOSE);
2.23 frystyk 745: }
746: return YES;
747: }
2.38 frystyk 748:
749: /* ------------------------------------------------------------------------- */
2.59 frystyk 750: /* Connection Specifics */
751: /* ------------------------------------------------------------------------- */
752:
753: /* HTNet_Persistent
754: ** ----------------
755: ** Check whether the net object handles persistent connections
756: ** If we have a DNS entry then check that as well.
757: */
758: PUBLIC BOOL HTNet_persistent (HTNet * net)
759: {
760: return (net && HTHost_isPersistent(net->host));
761: }
762:
763: /* HTNet_persistent
764: ** ----------------
765: ** Set the net object to handle persistent connections
766: ** If we also have a DNS entry then update that as well
767: */
768: PUBLIC BOOL HTNet_setPersistent (HTNet * net, BOOL persistent)
769: {
770: if (net) {
2.60 frystyk 771: if (CORE_TRACE) HTTrace("Net......... Persistent connection set %s\n",
2.59 frystyk 772: persistent ? "ON" : "OFF");
773: if (persistent)
774: HTHost_setChannel(net->host, net->channel);
775: else
776: HTHost_clearChannel(net->host);
777: }
778: return NO;
779: }
780:
781: /* ------------------------------------------------------------------------- */
2.38 frystyk 782: /* Data Access Methods */
783: /* ------------------------------------------------------------------------- */
784:
785: /*
2.60 frystyk 786: ** Get and set the socket number
787: */
788: PUBLIC BOOL HTNet_setSocket (HTNet * net, SOCKET sockfd)
789: {
790: if (net) {
791: net->sockfd = sockfd;
792: return YES;
793: }
794: return NO;
795: }
796:
797: PUBLIC SOCKET HTNet_socket (HTNet * net)
798: {
799: return (net ? net->sockfd : INVSOC);
800: }
801:
802: /*
2.59 frystyk 803: ** Get and set the HTTransport object
2.38 frystyk 804: */
2.59 frystyk 805: PUBLIC BOOL HTNet_setTransport (HTNet * net, HTTransport * tp)
2.38 frystyk 806: {
2.59 frystyk 807: if (net && tp) {
808: net->transport = tp;
2.38 frystyk 809: return YES;
810: }
811: return NO;
812: }
813:
2.59 frystyk 814: PUBLIC HTTransport * HTNet_transport (HTNet * net)
2.38 frystyk 815: {
2.59 frystyk 816: return (net ? net->transport : NULL);
2.38 frystyk 817: }
818:
2.55 frystyk 819: /*
2.59 frystyk 820: ** Get and set the HTChannel object
2.55 frystyk 821: */
2.59 frystyk 822: PUBLIC BOOL HTNet_setChannel (HTNet * net, HTChannel * channel)
2.55 frystyk 823: {
2.59 frystyk 824: if (net && channel) {
825: net->channel = channel;
2.55 frystyk 826: return YES;
827: }
828: return NO;
829: }
830:
2.59 frystyk 831: PUBLIC HTChannel * HTNet_channel (HTNet * net)
2.55 frystyk 832: {
2.59 frystyk 833: return (net ? net->channel : NULL);
834: }
835:
836: /*
837: ** Get and set the HTHost object
838: */
839: PUBLIC BOOL HTNet_setHost (HTNet * net, HTHost * host)
840: {
841: if (net && host) {
842: net->host = host;
843: return YES;
844: }
845: return NO;
846: }
847:
848: PUBLIC HTHost * HTNet_host (HTNet * net)
849: {
850: return (net ? net->host : NULL);
851: }
852:
853: /*
854: ** Get and set the HTdns object
855: */
856: PUBLIC BOOL HTNet_setDns (HTNet * net, HTdns * dns)
857: {
858: if (net && dns) {
859: net->dns = dns;
860: return YES;
861: }
862: return NO;
863: }
864:
865: PUBLIC HTdns * HTNet_dns (HTNet * net)
866: {
867: return (net ? net->dns : NULL);
868: }
869:
870:
871: /*
872: ** Create the input stream and bind it to the channel
873: ** Please read the description in the HTIOStream module for the parameters
874: */
875: PUBLIC HTInputStream * HTNet_getInput (HTNet * net, HTStream * target,
876: void * param, int mode)
877: {
878: if (net && net->channel && net->transport) {
879: HTTransport * tp = net->transport;
880: HTChannel * ch = net->channel;
881: net->input = (*tp->input_new)(net, ch, target, param, mode);
882: HTChannel_setInput(ch, net->input, tp->mode);
883: return net->input;
884: }
2.60 frystyk 885: if (CORE_TRACE) HTTrace("Net......... Can't create input stream\n");
2.59 frystyk 886: return NULL;
887: }
888:
889: /*
890: ** Create the output stream and bind it to the channel
891: ** Please read the description in the HTIOStream module on the parameters
892: */
893: PUBLIC HTOutputStream * HTNet_getOutput (HTNet * net, void * param, int mode)
894: {
895: if (net && net->request && net->channel && net->transport) {
896: HTTransport * tp = net->transport;
897: HTChannel * ch = net->channel;
898: HTOutputStream * output = (*tp->output_new)(net, ch, param, mode);
899: HTChannel_setOutput(ch, output, tp->mode);
900: return output;
901: }
2.60 frystyk 902: if (CORE_TRACE) HTTrace("Net......... Can't create output stream\n");
2.59 frystyk 903: return NULL;
2.55 frystyk 904: }
Webmaster
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to HTNet.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Public] / libwww / Library / src