Annotation of libwww/Library/src/HTHost.c, revision 2.73
2.1 frystyk 1: /* HTHost.c
2: ** REMOTE HOST INFORMATION
3: **
4: ** (c) COPYRIGHT MIT 1995.
5: ** Please first read the full copyright statement in the file COPYRIGH.
2.73 ! kahan 6: ** @(#) $Id: HTHost.c,v 2.72 2000/07/28 13:56:08 kahan Exp $
2.1 frystyk 7: **
8: ** This object manages the information that we know about a remote host.
9: ** This can for example be what type of host it is, and what version
10: ** it is using. We also keep track of persistent connections
11: **
12: ** April 96 HFN Written
13: */
14:
15: /* Library include files */
2.44 frystyk 16: #include "wwwsys.h"
2.1 frystyk 17: #include "WWWUtil.h"
18: #include "HTParse.h"
19: #include "HTAlert.h"
20: #include "HTError.h"
21: #include "HTNetMan.h"
22: #include "HTTrans.h"
2.13 frystyk 23: #include "HTTPUtil.h"
24: #include "HTTCP.h"
2.1 frystyk 25: #include "HTHost.h" /* Implemented here */
2.13 frystyk 26: #include "HTHstMan.h"
2.1 frystyk 27:
2.48 frystyk 28: #define HOST_OBJECT_TTL 43200L /* Default host timeout is 12 h */
2.29 frystyk 29:
2.48 frystyk 30: #define TCP_IDLE_PASSIVE 120L /* Passive TTL in s on an idle connection */
31: #define TCP_IDLE_ACTIVE 60000L /* Active TTL in ms on an idle connection */
2.29 frystyk 32:
2.45 frystyk 33: #define MAX_PIPES 50 /* maximum number of pipelined requests */
2.50 frystyk 34: #define MAX_HOST_RECOVER 1 /* Max number of auto recovery */
2.32 frystyk 35: #define DEFAULT_DELAY 30 /* Default write flush delay in ms */
2.1 frystyk 36:
2.13 frystyk 37: struct _HTInputStream {
38: const HTInputStreamClass * isa;
2.1 frystyk 39: };
40:
2.13 frystyk 41: PRIVATE int HostEvent(SOCKET soc, void * pVoid, HTEventType type);
42:
43: /* Type definitions and global variables etc. local to this module */
2.48 frystyk 44: PRIVATE time_t HostTimeout = HOST_OBJECT_TTL; /* Timeout for host objects */
2.53 frystyk 45: PRIVATE time_t HTPassiveTimeout = TCP_IDLE_PASSIVE; /* Passive timeout in s */
46: PRIVATE ms_t HTActiveTimeout = TCP_IDLE_ACTIVE; /* Active timeout in ms */
2.1 frystyk 47:
2.8 frystyk 48: PRIVATE HTList ** HostTable = NULL;
49: PRIVATE HTList * PendHost = NULL; /* List of pending host elements */
2.1 frystyk 50:
2.40 kahan 51: /* JK: New functions for interruption the automatic pending request
52: activation */
53: PRIVATE HTHost_ActivateRequestCallback * ActivateReqCBF = NULL;
54: PRIVATE int HTHost_ActivateRequest (HTNet *net);
55: PRIVATE BOOL DoPendingReqLaunch = YES; /* controls automatic activation
56: of pending requests */
57:
2.13 frystyk 58: PRIVATE int EventTimeout = -1; /* Global Host event timeout */
59:
2.36 frystyk 60: PRIVATE ms_t WriteDelay = DEFAULT_DELAY; /* Delay in ms */
2.26 frystyk 61:
2.45 frystyk 62: PRIVATE int MaxPipelinedRequests = MAX_PIPES;
63:
2.1 frystyk 64: /* ------------------------------------------------------------------------- */
65:
66: PRIVATE void free_object (HTHost * me)
67: {
68: if (me) {
2.30 frystyk 69: int i;
2.1 frystyk 70: HT_FREE(me->hostname);
71: HT_FREE(me->type);
2.12 frystyk 72: HT_FREE(me->server);
73: HT_FREE(me->user_agent);
74: HT_FREE(me->range_units);
2.30 frystyk 75:
76: /* Delete the channel (if any) */
2.3 eric 77: if (me->channel) {
2.5 eric 78: HTChannel_delete(me->channel, HT_OK);
2.3 eric 79: me->channel = NULL;
80: }
2.30 frystyk 81:
82: /* Unregister the events */
2.18 eric 83: for (i = 0; i < HTEvent_TYPES; i++)
84: HTEvent_delete(me->events[i]);
2.30 frystyk 85:
86: /* Delete the timer (if any) */
87: if (me->timer) HTTimer_delete(me->timer);
88:
89: /* Delete the queues */
2.8 frystyk 90: HTList_delete(me->pipeline);
91: HTList_delete(me->pending);
2.1 frystyk 92: HT_FREE(me);
93: }
94: }
95:
96: PRIVATE BOOL delete_object (HTList * list, HTHost * me)
97: {
2.59 frystyk 98: HTTRACE(CORE_TRACE, "Host info... object %p from list %p\n" _ me _ list);
2.1 frystyk 99: HTList_removeObject(list, (void *) me);
100: free_object(me);
101: return YES;
102: }
103:
2.13 frystyk 104: PRIVATE BOOL isLastInPipe (HTHost * host, HTNet * net)
105: {
106: return HTList_lastObject(host->pipeline) == net;
107: }
108:
2.51 frystyk 109: PRIVATE BOOL killPipeline (HTHost * host, HTEventType type)
2.48 frystyk 110: {
111: if (host) {
112: int piped = HTList_count(host->pipeline);
113: int pending = HTList_count(host->pending);
114: int cnt;
115:
2.59 frystyk 116: HTTRACE(CORE_TRACE, "Host kill... Pipeline due to %s event\n" _ HTEvent_type2str(type));
2.51 frystyk 117:
2.48 frystyk 118: /* Terminate all net objects in pending queue */
119: for (cnt=0; cnt<pending; cnt++) {
120: HTNet * net = HTList_removeLastObject(host->pending);
2.56 frystyk 121: if (net) {
2.59 frystyk 122: HTTRACE(CORE_TRACE, "Host kill... Terminating net object %p from pending queue\n" _ net);
2.56 frystyk 123: net->registeredFor = 0;
124: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, type);
2.58 frystyk 125: if (host->lock == net) host->lock = NULL;
2.56 frystyk 126: }
2.48 frystyk 127: }
128:
129: /* Terminate all net objects in pipeline */
130: if (piped >= 1) {
131:
132: /*
133: ** Terminte all net objects in the pipeline
134: */
135: for (cnt=0; cnt<piped; cnt++) {
136: HTNet * net = HTList_firstObject(host->pipeline);
2.56 frystyk 137: if (net) {
2.59 frystyk 138: HTTRACE(CORE_TRACE, "Host kill... Terminating net object %p from pipe line\n" _ net);
2.56 frystyk 139: net->registeredFor = 0;
140: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, type);
141: }
2.48 frystyk 142: }
2.73 ! kahan 143: /* Richard Atterer (18/04/03): Close the connection,
! 144: * to prevent the server from sending us the remainder
! 145: * of the data for the currently active request. */
! 146: HTChannel_setSemaphore(host->channel, 0);
! 147: HTHost_clearChannel(host, HT_INTERRUPTED);
2.48 frystyk 148: }
149: return YES;
150: }
151: return NO;
152: }
153:
154: /*
2.51 frystyk 155: ** Silently close an idle persistent connection after
2.53 frystyk 156: ** HTActiveTimeout secs
2.51 frystyk 157: */
158: PRIVATE int IdleTimeoutEvent (HTTimer * timer, void * param, HTEventType type)
159: {
160: HTHost * host = (HTHost *) param;
161: SOCKET sockfd = HTChannel_socket(host->channel);
2.67 raff 162:
2.51 frystyk 163: HTTimer_delete(timer);
164: host->timer = NULL;
2.67 raff 165:
166: return HostEvent (sockfd, host, HTEvent_CLOSE);
2.51 frystyk 167: }
168:
169: /*
2.13 frystyk 170: ** HostEvent - host event manager - recieves events from the event
171: ** manager and dispatches them to the client net objects by calling the
172: ** net object's cbf.
173: **
174: */
175: PRIVATE int HostEvent (SOCKET soc, void * pVoid, HTEventType type)
176: {
177: HTHost * host = (HTHost *)pVoid;
178:
2.61 frystyk 179: if (type == HTEvent_READ || type == HTEvent_CLOSE || type == HTEvent_ACCEPT) {
2.13 frystyk 180: HTNet * targetNet;
181:
182: /* call the first net object */
183: do {
184: int ret;
2.49 frystyk 185:
186: /* netscape and apache servers can do a lazy close well after usage
187: * of previous socket has been dispensed by the library,
188: * the section below makes sure the event does not get miss attributed
189: */
2.66 frystyk 190: if (HTChannel_socket(host->channel) != soc && type != HTEvent_ACCEPT && !host->listening) {
191: HTTRACE(CORE_TRACE, "Host Event.. wild socket %d type = %s real socket is %d\n" _ soc _
192: type == HTEvent_CLOSE ? "Event_Close" : "Event_Read" _
193: HTChannel_socket(host->channel));
194: return HT_OK;
2.49 frystyk 195: }
196:
2.13 frystyk 197: targetNet = (HTNet *)HTList_firstObject(host->pipeline);
198: if (targetNet) {
2.59 frystyk 199: HTTRACE(CORE_TRACE, "Host Event.. READ passed to `%s\'\n" _
2.28 frystyk 200: HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet))));
2.13 frystyk 201: if ((ret = (*targetNet->event.cbf)(HTChannel_socket(host->channel),
202: targetNet->event.param, type)) != HT_OK)
203: return ret;
204: }
205: if (targetNet == NULL && host->remainingRead > 0) {
2.59 frystyk 206: HTTRACE(CORE_TRACE, "HostEvent... Error: %d bytes left to read and nowhere to put them\n" _
2.31 frystyk 207: host->remainingRead);
2.13 frystyk 208: host->remainingRead = 0;
209: /*
210: ** Fall through to close the channel
211: */
212: }
213: /* call pipelined net object to eat all the data in the channel */
214: } while (host->remainingRead > 0);
215:
216: /* last target net should have set remainingRead to 0 */
217: if (targetNet)
218: return HT_OK;
219:
220: /* If there was notargetNet, it should be a close */
2.59 frystyk 221: HTTRACE(CORE_TRACE, "Host Event.. host %p `%s\' closed connection.\n" _
222: host _ host->hostname);
2.13 frystyk 223:
224: /* Is there garbage in the channel? Let's check: */
225: {
226: char buf[256];
227: int ret;
2.28 frystyk 228: memset(buf, '\0', sizeof(buf));
2.68 kahan 229: if (HTChannel_socket(host->channel) != INVSOC) {
230: while ((ret = NETREAD(HTChannel_socket(host->channel), buf, sizeof(buf)-1)) > 0) {
2.59 frystyk 231: HTTRACE(CORE_TRACE, "Host Event.. Host %p `%s\' had %d extraneous bytes: `%s\'\n" _
2.68 kahan 232: host _ host->hostname _ ret _ buf);
2.28 frystyk 233: memset(buf, '\0', sizeof(buf));
2.68 kahan 234: }
235: }
2.13 frystyk 236: }
237: HTHost_clearChannel(host, HT_OK);
2.28 frystyk 238: return HT_OK; /* extra garbage does not constitute an application error */
2.13 frystyk 239:
2.18 eric 240: } else if (type == HTEvent_WRITE || type == HTEvent_CONNECT) {
2.13 frystyk 241: HTNet * targetNet = (HTNet *)HTList_lastObject(host->pipeline);
242: if (targetNet) {
2.59 frystyk 243: HTTRACE(CORE_TRACE, "Host Event.. WRITE passed to `%s\'\n" _
2.28 frystyk 244: HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet))));
2.13 frystyk 245: return (*targetNet->event.cbf)(HTChannel_socket(host->channel), targetNet->event.param, type);
246: }
2.59 frystyk 247: HTTRACE(CORE_TRACE, "Host Event Host %p (`%s\') dispatched with event %s but doesn't have a target - %d requests made, %d requests in pipe, %d pending\n" _
248: host _
249: host ? host->hostname : "<null>" _
250: HTEvent_type2str(type) _
251: host ? host->reqsMade : -1 _
252: HTList_count(host->pipeline) _
2.56 frystyk 253: HTList_count(host->pending));
2.55 frystyk 254: #if 0
2.59 frystyk 255: HTDEBUGBREAK("Host Event.. Host %p (`%s\') dispatched with event %d\n" _
256: host _ host ? host->hostname : "<null>" _ type);
2.13 frystyk 257: return HT_ERROR;
2.55 frystyk 258: #else
259: return HT_OK;
260: #endif
2.14 frystyk 261: } else if (type == HTEvent_TIMEOUT) {
2.51 frystyk 262: killPipeline(host, HTEvent_TIMEOUT);
2.14 frystyk 263: } else {
2.59 frystyk 264: HTTRACE(CORE_TRACE, "Don't know how to handle OOB data from `%s\'?\n" _
2.44 frystyk 265: host->hostname);
2.14 frystyk 266: }
2.13 frystyk 267: return HT_OK;
268: }
269:
2.1 frystyk 270: /*
271: ** Search the host info cache for a host object or create a new one
272: ** and add it. Examples of host names are
273: **
274: ** www.w3.org
275: ** www.foo.com:8000
276: ** 18.52.0.18
277: **
278: ** Returns Host object or NULL if error. You may get back an already
279: ** existing host object - you're not guaranteed a new one each time.
280: */
2.15 eric 281: PUBLIC HTHost * HTHost_new (char * host, u_short u_port)
2.1 frystyk 282: {
283: HTList * list = NULL; /* Current list in cache */
284: HTHost * pres = NULL;
2.13 frystyk 285: int hash = 0;
2.1 frystyk 286: if (!host) {
2.59 frystyk 287: HTTRACE(CORE_TRACE, "Host info... Bad argument\n");
2.1 frystyk 288: return NULL;
289: }
290:
291: /* Find a hash for this host */
292: {
293: char *ptr;
294: for (ptr=host; *ptr; ptr++)
2.13 frystyk 295: hash = (int) ((hash * 3 + (*(unsigned char *) ptr)) % HOST_HASH_SIZE);
2.1 frystyk 296: if (!HostTable) {
2.13 frystyk 297: if ((HostTable = (HTList **) HT_CALLOC(HOST_HASH_SIZE,
2.1 frystyk 298: sizeof(HTList *))) == NULL)
299: HT_OUTOFMEM("HTHost_find");
300: }
301: if (!HostTable[hash]) HostTable[hash] = HTList_new();
302: list = HostTable[hash];
303: }
304:
305: /* Search the cache */
306: {
307: HTList * cur = list;
308: while ((pres = (HTHost *) HTList_nextObject(cur))) {
2.15 eric 309: if (!strcmp(pres->hostname, host) && u_port == pres->u_port) {
2.8 frystyk 310: if (HTHost_isIdle(pres) && time(NULL)>pres->ntime+HostTimeout){
2.59 frystyk 311: HTTRACE(CORE_TRACE, "Host info... Collecting host info %p\n" _ pres);
2.1 frystyk 312: delete_object(list, pres);
313: pres = NULL;
314: }
315: break;
316: }
317: }
318: }
319:
2.8 frystyk 320: /* If not found then create new Host object, else use existing one */
2.1 frystyk 321: if (pres) {
322: if (pres->channel) {
2.32 frystyk 323:
324: /*
325: ** If we have a TTL for this TCP connection then
326: ** check that we haven't passed it.
327: */
328: if (pres->expires > 0) {
329: time_t t = time(NULL);
2.51 frystyk 330: if (HTHost_isIdle(pres) && pres->expires < t) {
2.59 frystyk 331: HTTRACE(CORE_TRACE, "Host info... Persistent channel %p gotten cold\n" _
2.32 frystyk 332: pres->channel);
2.48 frystyk 333: HTHost_clearChannel(pres, HT_OK);
2.32 frystyk 334: } else {
2.53 frystyk 335: pres->expires = t + HTPassiveTimeout;
2.59 frystyk 336: HTTRACE(CORE_TRACE, "Host info... REUSING CHANNEL %p\n" _ pres->channel);
2.32 frystyk 337: }
338: }
2.55 frystyk 339: } else {
2.59 frystyk 340: HTTRACE(CORE_TRACE, "Host info... Found Host %p with no active channel\n" _ pres);
2.1 frystyk 341: }
342: } else {
343: if ((pres = (HTHost *) HT_CALLOC(1, sizeof(HTHost))) == NULL)
344: HT_OUTOFMEM("HTHost_add");
2.13 frystyk 345: pres->hash = hash;
2.1 frystyk 346: StrAllocCopy(pres->hostname, host);
2.15 eric 347: pres->u_port = u_port;
2.1 frystyk 348: pres->ntime = time(NULL);
2.8 frystyk 349: pres->mode = HT_TP_SINGLE;
2.26 frystyk 350: pres->delay = WriteDelay;
2.71 kahan 351: pres->inFlush = NO;
2.18 eric 352: {
2.26 frystyk 353: int i;
354: for (i = 0; i < HTEvent_TYPES; i++)
355: pres->events[i]= HTEvent_new(HostEvent, pres, HT_PRIORITY_MAX, EventTimeout);
2.18 eric 356: }
2.59 frystyk 357: HTTRACE(CORE_TRACE, "Host info... added `%s\' with host %p to list %p\n" _
358: host _ pres _ list);
2.1 frystyk 359: HTList_addObject(list, (void *) pres);
360: }
361: return pres;
2.9 frystyk 362: }
363:
2.15 eric 364: PUBLIC HTHost * HTHost_newWParse (HTRequest * request, char * url, u_short u_port)
2.13 frystyk 365: {
2.32 frystyk 366: char * port;
367: char * fullhost = NULL;
368: char * parsedHost = NULL;
369: SockA * sin;
370: HTHost * me;
371: char * proxy = HTRequest_proxy(request);
2.13 frystyk 372:
2.32 frystyk 373: fullhost = HTParse(proxy ? proxy : url, "", PARSE_HOST);
2.13 frystyk 374:
2.66 frystyk 375: /* If there's an @ then use the stuff after it as a hostname */
2.32 frystyk 376: if (fullhost) {
377: char * at_sign;
378: if ((at_sign = strchr(fullhost, '@')) != NULL)
379: parsedHost = at_sign+1;
380: else
381: parsedHost = fullhost;
382: }
383: if (!parsedHost || !*parsedHost) {
384: HTRequest_addError(request, ERR_FATAL, NO, HTERR_NO_HOST,
2.52 frystyk 385: NULL, 0, "HTHost_newWParse");
2.32 frystyk 386: HT_FREE(fullhost);
387: return NULL;
388: }
2.55 frystyk 389:
390: /* See if the default port should be overridden */
391: if ((port = strchr(parsedHost, ':')) != NULL) {
2.32 frystyk 392: *port++ = '\0';
2.55 frystyk 393: if (*port && isdigit((int) *port)) u_port = (u_short) atol(port);
2.32 frystyk 394: }
2.59 frystyk 395: HTTRACE(PROT_TRACE, "HTHost parse Looking up `%s\' on port %u\n" _ parsedHost _ u_port);
2.55 frystyk 396:
2.32 frystyk 397: /* Find information about this host */
398: if ((me = HTHost_new(parsedHost, u_port)) == NULL) {
2.59 frystyk 399: HTTRACE(PROT_TRACE, "HTHost parse Can't get host info\n");
2.32 frystyk 400: me->tcpstate = TCP_ERROR;
401: return NULL;
402: }
403: sin = &me->sock_addr;
404: memset((void *) sin, '\0', sizeof(SockA));
2.13 frystyk 405: #ifdef DECNET
2.32 frystyk 406: sin->sdn_family = AF_DECnet;
407: net->sock_addr.sdn_objnum = port ? (unsigned char)(strtol(port, (char **) 0, 10)) : DNP_OBJ;
2.13 frystyk 408: #else /* Internet */
2.32 frystyk 409: sin->sin_family = AF_INET;
410: sin->sin_port = htons(u_port);
2.13 frystyk 411: #endif
2.32 frystyk 412: HT_FREE(fullhost); /* parsedHost points into fullhost */
413: return me;
2.13 frystyk 414: }
415:
2.9 frystyk 416: /*
417: ** Search the host info cache for a host object. Examples of host names:
418: **
419: ** www.w3.org
420: ** www.foo.com:8000
421: ** 18.52.0.18
422: **
423: ** Returns Host object or NULL if not found.
424: */
425: PUBLIC HTHost * HTHost_find (char * host)
426: {
427: HTList * list = NULL; /* Current list in cache */
428: HTHost * pres = NULL;
2.59 frystyk 429: HTTRACE(CORE_TRACE, "Host info... Looking for `%s\'\n" _ host ? host : "<null>");
2.9 frystyk 430:
431: /* Find a hash for this host */
432: if (host && HostTable) {
433: int hash = 0;
434: char *ptr;
435: for (ptr=host; *ptr; ptr++)
2.13 frystyk 436: hash = (int) ((hash * 3 + (*(unsigned char *) ptr)) % HOST_HASH_SIZE);
2.9 frystyk 437: if (!HostTable[hash]) return NULL;
438: list = HostTable[hash];
439:
440: /* Search the cache */
441: {
442: HTList * cur = list;
443: while ((pres = (HTHost *) HTList_nextObject(cur))) {
444: if (!strcmp(pres->hostname, host)) {
445: if (time(NULL) > pres->ntime + HostTimeout) {
2.59 frystyk 446: HTTRACE(CORE_TRACE, "Host info... Collecting host %p\n" _ pres);
2.9 frystyk 447: delete_object(list, pres);
448: pres = NULL;
449: } else {
2.59 frystyk 450: HTTRACE(CORE_TRACE, "Host info... Found `%s\'\n" _ host);
2.9 frystyk 451: }
452: return pres;
453: }
454: }
455: }
456: }
457: return NULL;
2.1 frystyk 458: }
459:
460: /*
2.62 frystyk 461: ** Cleanup the host list
462: */
463: PUBLIC void HTHost_deleteAll (void)
464: {
465: HTList * list;
466: HTHost * host;
467: int i;
468:
469: if (!HostTable)
470: return;
471:
472: for (i=0; i < HOST_HASH_SIZE; i++) {
473: list = HostTable[i];
474: if (!list) continue;
475:
476: while ((host = (HTHost *) HTList_removeFirstObject(list)) != NULL)
477: free_object(host);
478:
479: HTList_delete(list);
480: }
481:
482: HT_FREE(HostTable);
483: HostTable = NULL;
484: }
485:
486: /*
2.8 frystyk 487: ** Get and set the hostname of the remote host
488: */
489: PUBLIC char * HTHost_name (HTHost * host)
490: {
491: return host ? host->hostname : NULL;
492: }
493:
494: /*
2.1 frystyk 495: ** Get and set the type class of the remote host
496: */
497: PUBLIC char * HTHost_class (HTHost * host)
498: {
499: return host ? host->type : NULL;
500: }
501:
502: PUBLIC void HTHost_setClass (HTHost * host, char * s_class)
503: {
504: if (host && s_class) StrAllocCopy(host->type, s_class);
505: }
506:
507: /*
508: ** Get and set the version of the remote host
509: */
510: PUBLIC int HTHost_version (HTHost *host)
511: {
512: return host ? host->version : 0;
513: }
514:
515: PUBLIC void HTHost_setVersion (HTHost * host, int version)
516: {
517: if (host) host->version = version;
518: }
519:
520: /*
2.53 frystyk 521: ** Get and set the passive timeout for persistent entries.
2.1 frystyk 522: */
2.53 frystyk 523: PUBLIC BOOL HTHost_setPersistTimeout (time_t timeout)
2.1 frystyk 524: {
2.53 frystyk 525: if (timeout > 0) {
526: HTPassiveTimeout = timeout;
527: return YES;
528: }
529: return NO;
530: }
531:
532: PUBLIC time_t HTHost_persistTimeout (void)
533: {
534: return HTPassiveTimeout;
535: }
536:
537: /*
538: ** Get and set the active timeout for persistent entries.
539: */
540: PUBLIC BOOL HTHost_setActiveTimeout (ms_t timeout)
541: {
542: if (timeout > 1000) {
543: HTActiveTimeout = timeout;
544: return YES;
545: }
546: return NO;
2.1 frystyk 547: }
548:
2.53 frystyk 549: PUBLIC ms_t HTHost_activeTimeout (void)
2.1 frystyk 550: {
2.53 frystyk 551: return HTActiveTimeout;
2.1 frystyk 552: }
553:
554: /* Persistent Connection Expiration
555: ** --------------------------------
556: ** Should normally not be used. If, then use calendar time.
557: */
558: PUBLIC void HTHost_setPersistExpires (HTHost * host, time_t expires)
559: {
560: if (host) host->expires = expires;
561: }
562:
563: PUBLIC time_t HTHost_persistExpires (HTHost * host)
564: {
565: return host ? host->expires : -1;
566: }
567:
2.22 eric 568: PUBLIC void HTHost_setReqsPerConnection (HTHost * host, int reqs)
569: {
570: if (host) host->reqsPerConnection = reqs;
571: }
572:
573: PUBLIC int HTHost_reqsPerConnection (HTHost * host)
574: {
575: return host ? host->reqsPerConnection : -1;
576: }
577:
578: PUBLIC void HTHost_setReqsMade (HTHost * host, int reqs)
579: {
580: if (host) host->reqsMade = reqs;
581: }
582:
583: PUBLIC int HTHost_reqsMade (HTHost * host)
584: {
585: return host ? host->reqsMade : -1;
586: }
587:
2.1 frystyk 588: /*
2.6 frystyk 589: ** Public methods for this host
590: */
591: PUBLIC HTMethod HTHost_publicMethods (HTHost * me)
592: {
593: return me ? me->methods : METHOD_INVALID;
594: }
595:
596: PUBLIC void HTHost_setPublicMethods (HTHost * me, HTMethod methodset)
597: {
598: if (me) me->methods = methodset;
599: }
600:
601: PUBLIC void HTHost_appendPublicMethods (HTHost * me, HTMethod methodset)
602: {
603: if (me) me->methods |= methodset;
604: }
605:
606: /*
607: ** Get and set the server name of the remote host
608: */
609: PUBLIC char * HTHost_server (HTHost * host)
610: {
611: return host ? host->server : NULL;
612: }
613:
614: PUBLIC BOOL HTHost_setServer (HTHost * host, const char * server)
615: {
616: if (host && server) {
617: StrAllocCopy(host->server, server);
618: return YES;
619: }
620: return NO;
621: }
622:
623: /*
624: ** Get and set the userAgent name of the remote host
625: */
626: PUBLIC char * HTHost_userAgent (HTHost * host)
627: {
628: return host ? host->user_agent : NULL;
629: }
630:
631: PUBLIC BOOL HTHost_setUserAgent (HTHost * host, const char * userAgent)
632: {
633: if (host && userAgent) {
634: StrAllocCopy(host->user_agent, userAgent);
635: return YES;
2.12 frystyk 636: }
637: return NO;
638: }
639:
640: /*
641: ** Get and set acceptable range units
642: */
643: PUBLIC char * HTHost_rangeUnits (HTHost * host)
644: {
645: return host ? host->range_units : NULL;
646: }
647:
648: PUBLIC BOOL HTHost_setRangeUnits (HTHost * host, const char * units)
649: {
650: if (host && units) {
651: StrAllocCopy(host->range_units, units);
652: return YES;
653: }
654: return NO;
655: }
656:
657: /*
658: ** Checks whether a specific range unit is OK. We always say
659: ** YES except if we have a specific statement from the server that
660: ** it doesn't understand byte ranges - that is - it has sent "none"
661: ** in a "Accept-Range" response header
662: */
663: PUBLIC BOOL HTHost_isRangeUnitAcceptable (HTHost * host, const char * unit)
664: {
665: if (host && unit) {
666: #if 0
667: if (host->range_units) {
2.63 frystyk 668: char * start = HTStrCaseStr(host->range_units, "none");
2.12 frystyk 669:
670: /*
671: ** Check that "none" is infact a token. It could be part of some
672: ** other valid string, so we'd better check for it.
673: */
674: if (start) {
675:
676:
677: }
678: return NO;
679: }
680: #endif
681: return strcasecomp(unit, "bytes") ? NO : YES;
2.6 frystyk 682: }
683: return NO;
684: }
685:
2.1 frystyk 686: /*
687: ** As soon as we know that this host accepts persistent connections,
688: ** we associated the channel with the host.
689: ** We don't want more than MaxSockets-2 connections to be persistent in
690: ** order to avoid deadlock.
691: */
2.13 frystyk 692: PUBLIC BOOL HTHost_setPersistent (HTHost * host,
693: BOOL persistent,
694: HTTransportMode mode)
2.1 frystyk 695: {
2.13 frystyk 696: if (!host) return NO;
697:
698: if (!persistent) {
699: /*
700: ** We use the HT_IGNORE status code as we don't want to free
701: ** the stream at this point in time. The situation we want to
702: ** avoid is that we free the channel from within the stream pipe.
703: ** This will lead to an infinite look having the stream freing
704: ** itself.
705: */
2.30 frystyk 706: host->persistent = NO;
2.13 frystyk 707: return HTHost_clearChannel(host, HT_IGNORE);
708: }
709:
2.18 eric 710: /*
711: ** Set the host persistent if not already. Also update the mode to
712: ** the new one - it may have changed
713: */
714: HTHost_setMode(host, mode);
715: if (!host->persistent) {
2.13 frystyk 716: SOCKET sockfd = HTChannel_socket(host->channel);
2.8 frystyk 717: if (sockfd != INVSOC && HTNet_availablePersistentSockets() > 0) {
2.13 frystyk 718: host->persistent = YES;
2.53 frystyk 719: host->expires = time(NULL) + HTPassiveTimeout; /* Default timeout */
2.13 frystyk 720: HTChannel_setHost(host->channel, host);
2.8 frystyk 721: HTNet_increasePersistentSocket();
2.59 frystyk 722: HTTRACE(CORE_TRACE, "Host info... added host %p as persistent\n" _ host);
2.1 frystyk 723: return YES;
724: } else {
2.59 frystyk 725: HTTRACE(CORE_TRACE, "Host info... no room for persistent socket %d\n" _
2.7 frystyk 726: sockfd);
2.18 eric 727: return NO;
2.1 frystyk 728: }
2.18 eric 729: } else {
2.59 frystyk 730: HTTRACE(CORE_TRACE, "Host info... %p already persistent\n" _ host);
2.18 eric 731: return YES;
2.1 frystyk 732: }
733: return NO;
734: }
735:
736: /*
2.13 frystyk 737: ** Check whether we have a persistent channel or not
738: */
739: PUBLIC BOOL HTHost_isPersistent (HTHost * host)
740: {
741: return host && host->persistent;
742: }
743:
744: /*
2.1 frystyk 745: ** Find persistent channel associated with this host.
746: */
747: PUBLIC HTChannel * HTHost_channel (HTHost * host)
748: {
749: return host ? host->channel : NULL;
750: }
751:
2.30 frystyk 752:
2.1 frystyk 753: /*
2.30 frystyk 754: ** Check whether we have got a "close" notification, for example in the
755: ** connection header
756: */
757: PUBLIC BOOL HTHost_setCloseNotification (HTHost * host, BOOL mode)
758: {
759: if (host) {
760: host->close_notification = mode;
2.37 frystyk 761: return YES;
2.30 frystyk 762: }
763: return NO;
764: }
765:
766: PUBLIC BOOL HTHost_closeNotification (HTHost * host)
767: {
768: return host && host->close_notification;
769: }
770:
771: /*
2.1 frystyk 772: ** Clear the persistent entry by deleting the channel object. Note that
773: ** the channel object is only deleted if it's not used anymore.
774: */
2.8 frystyk 775: PUBLIC BOOL HTHost_clearChannel (HTHost * host, int status)
2.1 frystyk 776: {
777: if (host && host->channel) {
2.8 frystyk 778: HTChannel_setHost(host->channel, NULL);
2.10 frystyk 779:
2.13 frystyk 780: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
781: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
2.18 eric 782: host->registeredFor = 0;
2.13 frystyk 783:
2.10 frystyk 784: /*
785: ** We don't want to recursively delete ourselves so if we are
786: ** called from within the stream pipe then don't delete the channel
787: ** at this point
788: */
2.8 frystyk 789: HTChannel_delete(host->channel, status);
2.18 eric 790: host->expires = 0;
2.1 frystyk 791: host->channel = NULL;
2.22 eric 792: host->tcpstate = TCP_BEGIN;
793: host->reqsMade = 0;
2.32 frystyk 794: if (HTHost_isPersistent(host)) {
795: HTNet_decreasePersistentSocket();
796: host->persistent = NO;
797: }
798: host->close_notification = NO;
2.45 frystyk 799: host->broken_pipe = NO;
2.32 frystyk 800: host->mode = HT_TP_SINGLE;
2.67 raff 801:
802: host->recovered = 0;
2.32 frystyk 803:
2.59 frystyk 804: HTTRACE(CORE_TRACE, "Host info... removed host %p as persistent\n" _ host);
2.32 frystyk 805:
806: if (!HTList_isEmpty(host->pending)) {
2.59 frystyk 807: HTTRACE(CORE_TRACE, "Host has %d object(s) pending - attempting launch\n" _ HTList_count(host->pending));
2.32 frystyk 808: HTHost_launchPending(host);
809: }
2.1 frystyk 810: return YES;
811: }
812: return NO;
813: }
814:
2.37 frystyk 815: PUBLIC BOOL HTHost_doRecover (HTHost * host)
816: {
817: return host ? host->do_recover : NO;
818: }
819:
2.1 frystyk 820: /*
2.18 eric 821: ** Move all entries in the pipeline and move the rest to the pending
822: ** queue. They will get launched at a later point in time.
823: */
824: PUBLIC BOOL HTHost_recoverPipe (HTHost * host)
825: {
826: if (host) {
827: int piped = HTList_count(host->pipeline);
2.64 frystyk 828:
829: /*
830: ** First check that we haven't already recovered more than we want
831: */
832: if (host->recovered > MAX_HOST_RECOVER) {
833: HTTRACE(CORE_TRACE, "Host recover %p already %d times - not doing it anymore\n" _ host _ host->recovered);
834: return NO;
835: }
836:
837: /*
838: ** If we decided to recover and actually have something in the pipe
839: ** then go ahead.
840: */
2.18 eric 841: if (piped > 0) {
842: int cnt;
2.24 frystyk 843: host->recovered++;
2.64 frystyk 844: HTTRACE(CORE_TRACE, "Host recover %p recovered %d times. Moving %d Net objects from pipe line to pending queue\n" _ host _ host->recovered _ piped);
2.18 eric 845:
846: /*
847: ** Unregister this host for all events
848: */
849: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
850: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
851: host->registeredFor = 0;
852:
853: /*
854: ** Set new mode to single until we know what is going on
855: */
856: host->mode = HT_TP_SINGLE;
857:
858: /*
859: ** Move all net objects from the net object to the pending queue.
860: */
861: if (!host->pending) host->pending = HTList_new();
862: for (cnt=0; cnt<piped; cnt++) {
863: HTNet * net = HTList_removeLastObject(host->pipeline);
2.59 frystyk 864: HTTRACE(CORE_TRACE, "Host recover Resetting net object %p\n" _ net);
2.18 eric 865: net->registeredFor = 0;
866: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, HTEvent_RESET);
867: HTList_appendObject(host->pending, net);
2.57 frystyk 868: host->lock = net;
2.18 eric 869: }
2.37 frystyk 870:
2.18 eric 871: HTChannel_setSemaphore(host->channel, 0);
872: HTHost_clearChannel(host, HT_INTERRUPTED);
2.37 frystyk 873: host->do_recover = NO;
2.18 eric 874: }
2.24 frystyk 875: return YES;
2.18 eric 876: }
877: return NO;
878: }
879:
880: /*
2.51 frystyk 881: ** Terminate a pipeline prematurely, for example because of timeout,
882: ** interruption, etc.
883: */
884: PUBLIC BOOL HTHost_killPipe (HTHost * host)
885: {
886: return killPipeline(host, HTEvent_CLOSE);
887: }
888:
889: /*
2.8 frystyk 890: ** Handle the connection mode. The mode may change mode in the
891: ** middle of a connection.
892: */
893: PUBLIC HTTransportMode HTHost_mode (HTHost * host, BOOL * active)
894: {
895: return host ? host->mode : HT_TP_SINGLE;
896: }
897:
898: /*
899: ** If the new mode is lower than the old mode then adjust the pipeline
900: ** accordingly. That is, if we are going into single mode then move
901: ** all entries in the pipeline and move the rest to the pending
902: ** queue. They will get launched at a later point in time.
903: */
904: PUBLIC BOOL HTHost_setMode (HTHost * host, HTTransportMode mode)
905: {
906: if (host) {
907: /*
908: ** Check the new mode and see if we must adjust the queues.
909: */
910: if (mode == HT_TP_SINGLE && host->mode > mode) {
911: int piped = HTList_count(host->pipeline);
912: if (piped > 0) {
913: int cnt;
2.59 frystyk 914: HTTRACE(CORE_TRACE, "Host info... Moving %d Net objects from pipe line to pending queue\n" _ piped);
2.8 frystyk 915: if (!host->pending) host->pending = HTList_new();
916: for (cnt=0; cnt<piped; cnt++) {
2.18 eric 917: HTNet * net = HTList_removeLastObject(host->pipeline);
2.59 frystyk 918: HTTRACE(CORE_TRACE, "Host info... Resetting net object %p\n" _ net);
2.13 frystyk 919: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, HTEvent_RESET);
2.8 frystyk 920: HTList_appendObject(host->pending, net);
921: }
2.18 eric 922: HTChannel_setSemaphore(host->channel, 0);
923: HTHost_clearChannel(host, HT_INTERRUPTED);
2.8 frystyk 924: }
2.24 frystyk 925: }
926:
927: /*
928: ** If we know that this host is bad then we don't allow anything than
929: ** single mode. We can't recover connections for the rest of our life
930: */
931: if (mode == HT_TP_PIPELINE && host->recovered > MAX_HOST_RECOVER) {
2.59 frystyk 932: HTTRACE(PROT_TRACE, "Host info... %p is bad for pipelining so we won't do it!!!\n" _
2.24 frystyk 933: host);
934: } else {
935: host->mode = mode;
2.59 frystyk 936: HTTRACE(PROT_TRACE, "Host info... New mode is %d for host %p\n" _ host->mode _ host);
2.24 frystyk 937: }
2.8 frystyk 938: }
939: return NO;
940: }
941:
942: /*
943: ** Check whether a host is idle meaning if it is ready for a new
944: ** request which depends on the mode of the host. If the host is
945: ** idle, i.e. ready for use then return YES else NO. If the host supports
946: ** persistent connections then still only return idle if no requests are
947: ** ongoing.
948: */
949: PUBLIC BOOL HTHost_isIdle (HTHost * host)
950: {
2.32 frystyk 951: return (host && HTList_isEmpty(host->pipeline));
2.8 frystyk 952: }
953:
2.13 frystyk 954: PRIVATE BOOL _roomInPipe (HTHost * host)
955: {
956: int count;
2.34 frystyk 957: if (!host ||
958: (host->reqsPerConnection && host->reqsMade >= host->reqsPerConnection) ||
2.45 frystyk 959: HTHost_closeNotification(host) || host->broken_pipe)
2.32 frystyk 960: return NO;
2.13 frystyk 961: count = HTList_count(host->pipeline);
962: switch (host->mode) {
963: case HT_TP_SINGLE:
964: return count <= 0;
965: case HT_TP_PIPELINE:
2.51 frystyk 966: return (host->recovered < MAX_HOST_RECOVER) ?
967: (count < MaxPipelinedRequests) : (count <= 0);
2.13 frystyk 968: case HT_TP_INTERLEAVE:
969: return YES;
970: }
971: return NO;
972: }
973:
2.8 frystyk 974: /*
975: ** Add a net object to the host object. If the host
976: ** is idle then add to active list (pipeline) else add
977: ** it to the pending list
978: ** Return HT_PENDING if we must pend, HT_OK, or HT_ERROR
979: */
980: PUBLIC int HTHost_addNet (HTHost * host, HTNet * net)
981: {
982: if (host && net) {
983: int status = HT_OK;
2.32 frystyk 984: BOOL doit = (host->doit==net);
2.8 frystyk 985:
2.18 eric 986: /*
987: ** If we don't have a socket already then check to see if we can get
988: ** one. Otherwise we put the host object into our pending queue.
2.52 frystyk 989: */
2.18 eric 990: if (!host->channel && HTNet_availableSockets() <= 0) {
2.56 frystyk 991:
992: /* Create list for pending Host objects */
2.8 frystyk 993: if (!PendHost) PendHost = HTList_new();
2.56 frystyk 994:
995: /* Add the host object ad pending if not already */
996: if (HTList_indexOf(PendHost, host) < 0) HTList_addObject(PendHost, host);
997:
998: /*
999: ** Add the Net object to the Host object. If it is the current Net
1000: ** obejct holding the lock then add it to the beginning of the list.
1001: ** Otherwise add it to the end
1002: */
2.52 frystyk 1003: if (!host->pending) host->pending = HTList_new();
2.56 frystyk 1004: if (host->lock == net)
1005: HTList_appendObject(host->pending, net);
1006: else
1007: HTList_addObject(host->pending, net);
1008:
2.59 frystyk 1009: HTTRACE(CORE_TRACE, "Host info... Added Net %p (request %p) as pending on pending Host %p, %d requests made, %d requests in pipe, %d pending\n" _
1010: net _ net->request _ host _ host->reqsMade _
1011: HTList_count(host->pipeline) _ HTList_count(host->pending));
2.52 frystyk 1012: return HT_PENDING;
2.8 frystyk 1013: }
1014:
2.45 frystyk 1015: #if 0
2.18 eric 1016: /*
2.45 frystyk 1017: ** First check whether the net object is already on either queue.
1018: ** Do NOT add extra copies of the HTNet object to
1019: ** the pipeline or pending list (if it's already on the list).
1020: */
1021: if (HTList_indexOf(host->pipeline, net) >= 0) {
2.59 frystyk 1022: HTTRACE(CORE_TRACE, "Host info... The Net %p (request %p) is already in pipe,"
1023: " %d requests made, %d requests in pipe, %d pending\n" _
1024: net _ net->request _ host->reqsMade _
1025: HTList_count(host->pipeline) _
2.45 frystyk 1026: HTList_count(host->pending));
2.59 frystyk 1027: HTDEBUGBREAK("Net object %p registered multiple times in pipeline\n" _
2.45 frystyk 1028: net);
1029: return HT_OK;
1030: }
2.44 frystyk 1031:
2.45 frystyk 1032: if (HTList_indexOf(host->pending, net) >= 0) {
2.59 frystyk 1033: HTTRACE(CORE_TRACE, "Host info... The Net %p (request %p) already pending,"
1034: " %d requests made, %d requests in pipe, %d pending\n" _
1035: net _ net->request _ host->reqsMade _
1036: HTList_count(host->pipeline) _
2.45 frystyk 1037: HTList_count(host->pending));
2.59 frystyk 1038: HTDEBUGBREAK("Net object %p registered multiple times in pending queue\n" _
2.45 frystyk 1039: net);
1040:
1041: return HT_PENDING;
1042: }
1043: #endif
2.44 frystyk 1044:
1045: /*
2.18 eric 1046: ** Add net object to either active or pending queue.
1047: */
2.44 frystyk 1048: if (_roomInPipe(host) && (HTList_isEmpty(host->pending) || doit)) {
2.32 frystyk 1049: if (doit) host->doit = NULL;
2.8 frystyk 1050: if (!host->pipeline) host->pipeline = HTList_new();
1051: HTList_addObject(host->pipeline, net);
2.32 frystyk 1052: host->reqsMade++;
2.59 frystyk 1053: HTTRACE(CORE_TRACE, "Host info... Added Net %p (request %p) to pipe on Host %p, %d requests made, %d requests in pipe, %d pending\n" _
1054: net _ net->request _ host _ host->reqsMade _
1055: HTList_count(host->pipeline) _ HTList_count(host->pending));
2.18 eric 1056:
2.13 frystyk 1057: /*
2.30 frystyk 1058: ** If we have been idle then make sure we delete the timer
2.13 frystyk 1059: */
2.30 frystyk 1060: if (host->timer) {
1061: HTTimer_delete(host->timer);
1062: host->timer = NULL;
1063: }
2.40 kahan 1064:
1065: /*JK: New CBF function
1066: ** Call any user-defined callback to say the request will
1067: ** be processed.
1068: */
1069: HTHost_ActivateRequest (net);
2.30 frystyk 1070:
2.8 frystyk 1071: } else {
1072: if (!host->pending) host->pending = HTList_new();
2.44 frystyk 1073: HTList_addObject(host->pending, net);
2.59 frystyk 1074: HTTRACE(CORE_TRACE, "Host info... Added Net %p (request %p) as pending on Host %p, %d requests made, %d requests in pipe, %d pending\n" _
1075: net _ net->request _
1076: host _ host->reqsMade _
1077: HTList_count(host->pipeline) _ HTList_count(host->pending));
2.8 frystyk 1078: status = HT_PENDING;
1079: }
1080: return status;
1081: }
1082: return HT_ERROR;
1083: }
1084:
2.51 frystyk 1085: PRIVATE BOOL HTHost_free (HTHost * host, int status)
2.13 frystyk 1086: {
2.32 frystyk 1087: if (host->channel) {
2.13 frystyk 1088:
2.32 frystyk 1089: /* Check if we should keep the socket open */
1090: if (HTHost_isPersistent(host)) {
2.48 frystyk 1091: int piped = HTList_count(host->pipeline);
2.37 frystyk 1092: if (HTHost_closeNotification(host)) {
2.59 frystyk 1093: HTTRACE(CORE_TRACE, "Host Object. got close notifiation on socket %d\n" _
2.37 frystyk 1094: HTChannel_socket(host->channel));
1095:
1096: /*
1097: ** If more than a single element (this one) in the pipe
1098: ** then we have to recover gracefully
1099: */
1100: if (piped > 1) {
1101: host->reqsPerConnection = host->reqsMade - piped;
2.59 frystyk 1102: HTTRACE(CORE_TRACE, "%d requests made, %d in pipe, max %d requests pr connection\n" _
1103: host->reqsMade _ piped _ host->reqsPerConnection);
2.37 frystyk 1104: host->do_recover = YES;
2.70 kahan 1105: /* @@ JK: not clear yet if I need or not to set the channel to NULL. I think not */
1106: /* HTChannel_delete(host->channel, status); */
1107: if (HTChannel_delete(host->channel, status)) {
1108: HTTRACE(CORE_TRACE, "Host Event.. clearing channel on host %p (%s)\n" _ host _ host->hostname);
1109: host->channel = NULL;
1110: }
2.38 frystyk 1111: } else {
1112: HTChannel_setSemaphore(host->channel, 0);
1113: HTHost_clearChannel(host, status);
2.37 frystyk 1114: }
2.48 frystyk 1115: } else if (piped<=1 && host->reqsMade==host->reqsPerConnection) {
2.59 frystyk 1116: HTTRACE(CORE_TRACE, "Host Object. closing persistent socket %d\n" _
2.70 kahan 1117: HTChannel_socket(host->channel));
2.32 frystyk 1118:
1119: /*
1120: ** By lowering the semaphore we make sure that the channel
1121: ** is gonna be deleted
1122: */
1123: HTChannel_setSemaphore(host->channel, 0);
1124: HTHost_clearChannel(host, status);
1125:
1126: } else {
2.59 frystyk 1127: HTTRACE(CORE_TRACE, "Host Object. keeping persistent socket %d\n" _
2.70 kahan 1128: HTChannel_socket(host->channel));
2.62 frystyk 1129: if (HTChannel_delete(host->channel, status)) {
2.59 frystyk 1130: HTDEBUGBREAK("Host Event.. Channel unexpected deleted from host %p (%s)\n" _ host _ host->hostname);
2.62 frystyk 1131: host->channel = NULL;
1132: }
2.32 frystyk 1133: /*
1134: ** If connection is idle then set a timer so that we close the
1135: ** connection if idle too long
1136: */
2.48 frystyk 1137: if (piped<=1 && HTList_isEmpty(host->pending) && !host->timer) {
1138: host->timer = HTTimer_new(NULL, IdleTimeoutEvent,
2.53 frystyk 1139: host, HTActiveTimeout, YES, NO);
2.59 frystyk 1140: HTTRACE(PROT_TRACE, "Host........ Object %p going idle...\n" _ host);
2.32 frystyk 1141: }
1142: }
1143: return YES;
1144: } else {
2.59 frystyk 1145: HTTRACE(CORE_TRACE, "Host Object. closing socket %d\n" _ HTChannel_socket(host->channel));
2.47 frystyk 1146: HTChannel_setSemaphore(host->channel, 0);
2.41 frystyk 1147: HTHost_clearChannel(host, status);
2.32 frystyk 1148: }
2.13 frystyk 1149: }
2.32 frystyk 1150: return NO;
2.13 frystyk 1151: }
1152:
2.51 frystyk 1153: PUBLIC BOOL HTHost_deleteNet (HTHost * host, HTNet * net, int status)
2.8 frystyk 1154: {
1155: if (host && net) {
2.59 frystyk 1156: HTTRACE(CORE_TRACE, "Host info... Remove %p from pipe\n" _ net);
2.51 frystyk 1157:
1158: /* If the Net object is in the pipeline then also update the channel */
1159: if (host->pipeline && HTList_indexOf(host->pipeline, net) >= 0) {
1160: HTHost_free(host, status);
1161: HTList_removeObjectAll(host->pipeline, net);
1162: }
1163:
2.44 frystyk 1164: HTList_removeObjectAll(host->pending, net); /* just to make sure */
2.62 frystyk 1165: host->lock = HTList_firstObject(host->pending);
2.8 frystyk 1166: return YES;
1167: }
1168: return NO;
1169: }
1170:
1171: /*
1172: ** Handle pending host objects.
1173: ** There are two ways we can end up with pending reqyests:
1174: ** 1) If we are out of sockets then register new host objects as pending.
1175: ** 2) If we are pending on a connection then register new net objects as
1176: ** pending
1177: ** This set of functions handles pending host objects and can start new
1178: ** requests as resources get available
1179: */
1180:
1181: /*
1182: ** Check this host object for any pending requests and return the next
1183: ** registered Net object.
1184: */
1185: PUBLIC HTNet * HTHost_nextPendingNet (HTHost * host)
1186: {
1187: HTNet * net = NULL;
2.32 frystyk 1188: if (host && host->pending) {
2.18 eric 1189: /*JK 23/Sep/96 Bug correction. Associated the following lines to the
1190: **above if. There was a missing pair of brackets.
1191: */
1192: if ((net = (HTNet *) HTList_removeFirstObject(host->pending)) != NULL) {
2.59 frystyk 1193: HTTRACE(CORE_TRACE, "Host info... Popping %p from pending net queue on host %p\n" _
1194: net _ host);
2.33 frystyk 1195: #if 0
1196: {
1197: HTRequest * request = HTNet_request(net);
1198: char * uri = HTAnchor_address((HTAnchor *) HTRequest_anchor(request));
1199: fprintf(stderr, "Popping '%s'\n", uri);
1200: }
1201: #endif
2.32 frystyk 1202: host->doit = net;
2.18 eric 1203: }
2.8 frystyk 1204: }
1205: return net;
1206: }
1207:
1208: /*
2.13 frystyk 1209: ** Return the current list of pending host objects waiting for a socket
2.8 frystyk 1210: */
1211: PUBLIC HTHost * HTHost_nextPendingHost (void)
1212: {
1213: HTHost * host = NULL;
1214: if (PendHost) {
1215: if ((host = (HTHost *) HTList_removeFirstObject(PendHost)) != NULL)
2.59 frystyk 1216: HTTRACE(PROT_TRACE, "Host info... Popping %p from pending host queue\n" _
2.8 frystyk 1217: host);
1218: }
1219: return host;
1220: }
1221:
1222: /*
1223: ** Start the next pending request if any. First we look for pending
1224: ** requests for the same host and then we check for any other pending
1225: ** hosts
1226: */
1227: PUBLIC BOOL HTHost_launchPending (HTHost * host)
1228: {
2.52 frystyk 1229: HTNet * net = NULL;
2.8 frystyk 1230: if (!host) {
2.59 frystyk 1231: HTTRACE(PROT_TRACE, "Host info... Bad arguments\n");
2.8 frystyk 1232: return NO;
1233: }
1234:
1235: /*
2.52 frystyk 1236: ** In pipeline we can only have one doing writing at a time.
1237: ** We therefore check that there are no other Net object
1238: ** registered for write
2.8 frystyk 1239: */
2.52 frystyk 1240: if (host->mode == HT_TP_PIPELINE) {
1241: net = (HTNet *) HTList_lastObject(host->pipeline);
1242: if (net && net->registeredFor == HTEvent_WRITE)
1243: return NO;
1244: }
2.8 frystyk 1245:
2.52 frystyk 1246: /*
1247: ** Check the current Host object for pending Net objects
1248: */
1249: if (_roomInPipe(host) && DoPendingReqLaunch &&
1250: (net = HTHost_nextPendingNet(host))) {
1251: HTHost_ActivateRequest(net);
2.59 frystyk 1252: HTTRACE(CORE_TRACE, "Launch pending net object %p with %d reqs in pipe (%d reqs made)\n" _
1253: net _ HTList_count(host->pipeline) _ host->reqsMade);
2.52 frystyk 1254: return HTNet_execute(net, HTEvent_WRITE);
1255: }
2.13 frystyk 1256:
2.52 frystyk 1257: /*
1258: ** Check for other pending Host objects
1259: */
1260: if (DoPendingReqLaunch && HTNet_availableSockets() > 0) {
1261: HTHost * pending = HTHost_nextPendingHost();
1262: if (pending && (net = HTHost_nextPendingNet(pending))) {
1263: if (!pending->pipeline) pending->pipeline = HTList_new();
1264: HTList_addObject(pending->pipeline, net);
1265: host->reqsMade++;
2.59 frystyk 1266: HTTRACE(CORE_TRACE, "Launch pending host object %p, net %p with %d reqs in pipe (%d reqs made)\n" _
1267: pending _ net _ HTList_count(pending->pipeline) _ pending->reqsMade);
2.52 frystyk 1268: HTHost_ActivateRequest(net);
1269: return HTNet_execute(net, HTEvent_WRITE);
2.8 frystyk 1270: }
2.52 frystyk 1271: }
1272: return YES;
2.13 frystyk 1273: }
1274:
1275: PUBLIC HTNet * HTHost_firstNet (HTHost * host)
1276: {
1277: return (HTNet *) HTList_firstObject(host->pipeline);
2.60 frystyk 1278: }
1279:
1280: PUBLIC int HTHost_numberOfOutstandingNetObjects (HTHost * host)
1281: {
1282: return host ? HTList_count(host->pipeline) : -1;
1283: }
1284:
1285: PUBLIC int HTHost_numberOfPendingNetObjects (HTHost * host)
1286: {
1287: return host ? HTList_count(host->pending) : -1;
2.13 frystyk 1288: }
1289:
1290: /*
1291: ** The host event manager keeps track of the state of it's client engines
1292: ** (typically HTTPEvent), accepting multiple blocks on read or write from
1293: ** multiple pipelined engines. It then registers its own engine
1294: ** (HostEvent) with the event manager.
1295: */
2.66 frystyk 1296: PUBLIC int HTHost_connect (HTHost * host, HTNet * net, char * url)
2.13 frystyk 1297: {
2.42 frystyk 1298: HTRequest * request = HTNet_request(net);
2.52 frystyk 1299: int status = HT_OK;
2.42 frystyk 1300: if (!host) {
1301: HTProtocol * protocol = HTNet_protocol(net);
1302: if ((host = HTHost_newWParse(request, url, HTProtocol_id(protocol))) == NULL)
2.45 frystyk 1303: return HT_ERROR;
2.52 frystyk 1304:
1305: /*
1306: ** If not already locked and without a channel
2.55 frystyk 1307: ** then lock the darn thing with the first Net object
1308: ** pending.
2.52 frystyk 1309: */
1310: if (!host->lock && !host->channel) {
2.55 frystyk 1311: HTNet * next_pending = NULL;
2.42 frystyk 1312: host->forceWriteFlush = YES;
2.55 frystyk 1313: host->lock = (next_pending = HTList_firstObject(host->pending)) ?
1314: next_pending : net;
2.59 frystyk 1315: HTTRACE(CORE_TRACE, "Host connect Grabbing lock on Host %p with %p\n" _ host _ host->lock);
2.42 frystyk 1316: }
1317: HTNet_setHost(net, host);
1318: }
1319:
1320: if (!host->lock || (host->lock && host->lock == net)) {
2.66 frystyk 1321: status = HTDoConnect(net);
2.55 frystyk 1322: if (status == HT_PENDING)
1323: return HT_WOULD_BLOCK;
1324: else if (status == HT_WOULD_BLOCK) {
2.42 frystyk 1325: host->lock = net;
2.52 frystyk 1326: return status;
2.55 frystyk 1327: } else {
1328:
1329: /*
1330: ** See if there is already a new pending request that should
1331: ** take over the current lock
1332: */
1333: HTNet * next_pending = NULL;
1334: if ((next_pending = HTList_firstObject(host->pending))) {
2.59 frystyk 1335: HTTRACE(CORE_TRACE, "Host connect Changing lock on Host %p to %p\n" _
2.66 frystyk 1336: host _ next_pending);
2.55 frystyk 1337: host->lock = next_pending;
1338: } else {
2.59 frystyk 1339: HTTRACE(CORE_TRACE, "Host connect Unlocking Host %p\n" _ host);
2.55 frystyk 1340: host->lock = NULL;
1341: }
1342: return status;
2.42 frystyk 1343: }
1344: } else {
2.59 frystyk 1345: HTTRACE(CORE_TRACE, "Host connect Host %p already locked with %p\n" _ host _ host->lock);
2.42 frystyk 1346: if ((status = HTHost_addNet(host, net)) == HT_PENDING) {
1347: return HT_PENDING;
1348: }
2.54 frystyk 1349: }
1350: return HT_ERROR; /* @@@ - some more deletion and stuff here? */
1351: }
1352:
2.66 frystyk 1353: PUBLIC int HTHost_listen (HTHost * host, HTNet * net, char * url)
2.54 frystyk 1354: {
1355: HTRequest * request = HTNet_request(net);
1356: int status = HT_OK;
1357: if (!host) {
1358: HTProtocol * protocol = HTNet_protocol(net);
1359: if ((host = HTHost_newWParse(request, url, HTProtocol_id(protocol))) == NULL)
1360: return HT_ERROR;
1361:
1362: /*
1363: ** If not already locked and without a channel
2.66 frystyk 1364: ** then lock the darn thing with the first Net object
1365: ** pending.
2.54 frystyk 1366: */
1367: if (!host->lock && !host->channel) {
1368: host->forceWriteFlush = YES;
1369: host->lock = net;
1370: }
1371: HTNet_setHost(net, host);
1372: }
1373:
2.66 frystyk 1374: /*
1375: ** See if we already have a dedicated listen Net object. If not
1376: ** then create one.
1377: */
1378: if (!host->listening) host->listening = HTNet_new(host);
2.54 frystyk 1379:
2.66 frystyk 1380: /*
1381: ** Start listening on the Net object
1382: */
1383: status = HTDoListen(host->listening, net, HT_BACKLOG);
1384: if (status != HT_OK) {
1385: HTTRACE(CORE_TRACE, "Host listen. On Host %p resulted in %d\n" _ host _ status);
1386: return status;
1387: }
1388: return HT_OK;
1389: }
2.54 frystyk 1390:
2.66 frystyk 1391: PUBLIC int HTHost_accept (HTHost * host, HTNet * net, char * url)
1392: {
1393: int status = HT_OK;
1394: if (!host || !host->listening) {
1395: HTTRACE(CORE_TRACE, "Host accept. No host object or not listening on anything\n");
1396: return HT_ERROR;
1397: }
2.54 frystyk 1398:
2.66 frystyk 1399: if (!host->lock || (host->lock && host->lock == net)) {
1400: status = HTDoAccept(host->listening, net);
1401: if (status == HT_PENDING)
1402: return HT_WOULD_BLOCK;
1403: else if (status == HT_WOULD_BLOCK) {
2.54 frystyk 1404: host->lock = net;
1405: return status;
2.66 frystyk 1406: } else {
1407:
1408: /*
1409: ** See if there is already a new pending request that should
1410: ** take over the current lock
1411: */
1412: HTNet * next_pending = NULL;
1413: if ((next_pending = HTList_firstObject(host->pending))) {
1414: HTTRACE(CORE_TRACE, "Host connect Changing lock on Host %p to %p\n" _
1415: host _ next_pending);
1416: host->lock = next_pending;
1417: } else {
1418: HTTRACE(CORE_TRACE, "Host connect Unlocking Host %p\n" _ host);
1419: host->lock = NULL;
1420: }
1421: return status;
1422: }
1423: } else {
1424: HTTRACE(CORE_TRACE, "Host connect Host %p already locked with %p\n" _ host _ host->lock);
1425: if ((status = HTHost_addNet(host, net)) == HT_PENDING) {
1426: return HT_PENDING;
2.54 frystyk 1427: }
2.42 frystyk 1428: }
2.66 frystyk 1429: return HT_ERROR;
2.13 frystyk 1430: }
1431:
1432: /*
1433: ** Rules: SINGLE: one element in pipe, either reading or writing
1434: ** PIPE: n element in pipe, n-1 reading, 1 writing
1435: */
1436: PUBLIC int HTHost_register (HTHost * host, HTNet * net, HTEventType type)
1437: {
2.40 kahan 1438: HTEvent *event;
1439:
2.13 frystyk 1440: if (host && net) {
1441:
2.28 frystyk 1442: if (type == HTEvent_CLOSE) {
2.13 frystyk 1443:
2.28 frystyk 1444: /*
1445: ** Unregister this host for all events
1446: */
1447: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
1448: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
1449: host->registeredFor = 0;
2.13 frystyk 1450: return YES;
2.28 frystyk 1451:
1452: } else {
1453:
1454: /* net object may already be registered */
1455: if (HTEvent_BITS(type) & net->registeredFor)
1456: return NO;
1457: net->registeredFor ^= HTEvent_BITS(type);
1458:
1459: /* host object may already be registered */
1460: if (host->registeredFor & HTEvent_BITS(type))
1461: return YES;
1462: host->registeredFor ^= HTEvent_BITS(type);
2.46 frystyk 1463:
1464: #ifdef WWW_WIN_ASYNC
1465: /* Make sure we are registered for CLOSE on windows */
1466: event = *(host->events+HTEvent_INDEX(HTEvent_CLOSE));
1467: HTEvent_register(HTChannel_socket(host->channel), HTEvent_CLOSE, event);
1468: #endif /* WWW_WIN_ASYNC */
1469:
1470: /* JK: register a request in the event structure */
2.40 kahan 1471: event = *(host->events+HTEvent_INDEX(type));
1472: event->request = HTNet_request (net);
2.28 frystyk 1473: return HTEvent_register(HTChannel_socket(host->channel),
2.40 kahan 1474: type, event);
2.28 frystyk 1475: }
2.52 frystyk 1476:
1477: return YES;
2.13 frystyk 1478: }
2.65 frystyk 1479: HTTRACE(CORE_TRACE, "HTHost...... Don't register event with bad arguments\n");
2.13 frystyk 1480: return NO;
1481: }
1482:
1483: PUBLIC int HTHost_unregister (HTHost * host, HTNet * net, HTEventType type)
1484: {
1485: if (host && net) {
1486:
2.28 frystyk 1487: /* net object may not be registered */
2.13 frystyk 1488: if (!(HTEvent_BITS(type) & net->registeredFor))
1489: return NO;
1490: net->registeredFor ^= HTEvent_BITS(type);
1491:
2.28 frystyk 1492: /* host object may not be registered */
2.13 frystyk 1493: if (!(host->registeredFor & HTEvent_BITS(type)))
1494: return YES;
1495: host->registeredFor ^= HTEvent_BITS(type);
1496:
1497: /* stay registered for READ to catch a socket close */
1498: /* WRITE and CONNECT can be unregistered, though */
1499: if ((type == HTEvent_WRITE && isLastInPipe(host, net)) ||
1500: type == HTEvent_CONNECT)
1501: /* if we are blocked downstream, shut down the whole pipe */
1502: HTEvent_unregister(HTChannel_socket(host->channel), type);
1503: return YES;
1504: }
1505: return NO;
1506: }
1507:
1508: /*
1509: ** The reader tells HostEvent that it's stream did not finish the data
1510: */
1511: PUBLIC BOOL HTHost_setRemainingRead (HTHost * host, size_t remaining)
1512: {
1513: if (host == NULL) return NO;
1514: host->remainingRead = remaining;
2.59 frystyk 1515: HTTRACE(PROT_TRACE, "Host........ %d bytes remaining \n" _ remaining);
2.45 frystyk 1516: if (host->broken_pipe && remaining == 0) {
2.59 frystyk 1517: HTTRACE(PROT_TRACE, "Host........ Emtied out connection\n");
2.45 frystyk 1518: }
2.13 frystyk 1519: return YES;
1520: }
1521:
2.32 frystyk 1522: PUBLIC size_t HTHost_remainingRead (HTHost * host)
1523: {
1524: return host ? host->remainingRead : -1;
1525: }
1526:
2.13 frystyk 1527: PUBLIC SockA * HTHost_getSockAddr (HTHost * host)
1528: {
1529: if (!host) return NULL;
1530: return &host->sock_addr;
1531: }
1532:
1533: PUBLIC BOOL HTHost_setHome (HTHost * host, int home)
1534: {
1535: if (!host) return NO;
1536: host->home = home;
1537: return YES;
1538: }
1539:
1540: PUBLIC int HTHost_home (HTHost * host)
1541: {
1542: if (!host) return 0;
1543: return host->home;
1544: }
1545:
2.27 frystyk 1546: PUBLIC BOOL HTHost_setRetry (HTHost * host, int retry)
1547: {
1548: if (!host) return NO;
1549: host->retry = retry;
1550: return YES;
1551: }
1552:
1553: PUBLIC BOOL HTHost_decreaseRetry (HTHost * host)
1554: {
2.44 frystyk 1555: if (!host) return NO;
1556:
1557: if (host->retry > 0) host->retry--;
1558: return YES;
1559:
2.27 frystyk 1560: }
1561:
1562: PUBLIC int HTHost_retry (HTHost * host)
1563: {
1564: if (!host) return 0;
1565: return host->retry;
1566: }
1567:
2.13 frystyk 1568: #if 0 /* Is a macro right now */
2.21 frystyk 1569: PRIVATE BOOL HTHost_setDNS5 (HTHost * host, HTdns * dns)
2.13 frystyk 1570: {
1571: if (!host) return NO;
1572: host->dns = dns;
1573: return YES;
1574: }
1575: #endif
1576:
1577: PUBLIC BOOL HTHost_setChannel (HTHost * host, HTChannel * channel)
1578: {
1579: if (!host) return NO;
1580: host->channel = channel;
1581: return YES;
1582: }
1583:
1584: PUBLIC HTNet * HTHost_getReadNet(HTHost * host)
1585: {
2.38 frystyk 1586: return host ? (HTNet *) HTList_firstObject(host->pipeline) : NULL;
2.13 frystyk 1587: }
1588:
1589: PUBLIC HTNet * HTHost_getWriteNet(HTHost * host)
1590: {
1591: return host ? (HTNet *) HTList_lastObject(host->pipeline) : NULL;
1592: }
1593:
1594: /*
1595: ** Create the input stream and bind it to the channel
1596: ** Please read the description in the HTIOStream module for the parameters
1597: */
1598: PUBLIC HTInputStream * HTHost_getInput (HTHost * host, HTTransport * tp,
1599: void * param, int mode)
1600: {
1601: if (host && host->channel && tp) {
1602: HTChannel * ch = host->channel;
1603: HTInputStream * input = (*tp->input_new)(host, ch, param, mode);
1604: HTChannel_setInput(ch, input);
1605: return HTChannel_getChannelIStream(ch);
1606: }
2.59 frystyk 1607: HTTRACE(CORE_TRACE, "Host Object. Can't create input stream\n");
2.13 frystyk 1608: return NULL;
1609: }
1610:
1611: PUBLIC HTOutputStream * HTHost_getOutput (HTHost * host, HTTransport * tp,
1612: void * param, int mode)
1613: {
1614: if (host && host->channel && tp) {
1615: HTChannel * ch = host->channel;
1616: HTOutputStream * output = (*tp->output_new)(host, ch, param, mode);
1617: HTChannel_setOutput(ch, output);
1618: return output;
1619: }
2.59 frystyk 1620: HTTRACE(CORE_TRACE, "Host Object. Can't create output stream\n");
2.13 frystyk 1621: return NULL;
1622: }
1623:
1624: PUBLIC HTOutputStream * HTHost_output (HTHost * host, HTNet * net)
1625: {
1626: if (host && host->channel && net) {
1627: HTOutputStream * output = HTChannel_output(host->channel);
1628: return output;
1629: }
1630: return NULL;
1631: }
1632:
1633: PUBLIC int HTHost_read(HTHost * host, HTNet * net)
1634: {
1635: HTInputStream * input = HTChannel_input(host->channel);
1636: if (net != HTHost_getReadNet(host)) {
1637: HTHost_register(host, net, HTEvent_READ);
1638: return HT_WOULD_BLOCK;
1639: }
2.17 frystyk 1640:
1641: /*
1642: ** If there is no input channel then this can either mean that
1643: ** we have lost the channel or an error occurred. We return
1644: ** HT_CLOSED as this is a sign to the caller that we don't
1645: ** have a channel
1646: */
1647: return input ? (*input->isa->read)(input) : HT_CLOSED;
2.13 frystyk 1648: }
1649:
1650: PUBLIC BOOL HTHost_setConsumed(HTHost * host, size_t bytes)
1651: {
1652: HTInputStream * input;
1653: if (!host || !host->channel) return NO;
1654: if ((input = HTChannel_input(host->channel)) == NULL)
1655: return NO;
2.59 frystyk 1656: HTTRACE(CORE_TRACE, "Host........ passing %d bytes as consumed to %p\n" _ bytes _ input);
2.13 frystyk 1657: return (*input->isa->consumed)(input, bytes);
1658: }
1659:
1660: PUBLIC int HTHost_hash (HTHost * host)
1661: {
1662: return host ? host->hash : -1;
1663: }
1664:
2.26 frystyk 1665: PUBLIC BOOL HTHost_setWriteDelay (HTHost * host, ms_t delay)
2.13 frystyk 1666: {
2.26 frystyk 1667: if (host && delay >= 0) {
1668: host->delay = delay;
1669: return YES;
1670: }
1671: return NO;
1672: }
1673:
1674: PUBLIC ms_t HTHost_writeDelay (HTHost * host)
1675: {
1676: return host ? host->delay : 0;
1677: }
1678:
1679: PUBLIC int HTHost_findWriteDelay (HTHost * host, ms_t lastFlushTime, int buffSize)
1680: {
2.35 frystyk 1681: #if 0
2.15 eric 1682: unsigned short mtu;
2.18 eric 1683: int ret = -1;
2.15 eric 1684: int socket = HTChannel_socket(host->channel);
2.18 eric 1685: #ifndef WWW_MSWINDOWS
2.15 eric 1686: ret = ioctl(socket, 666, (unsigned long)&mtu);
2.18 eric 1687: #endif /* WWW_MSWINDOWS */
2.15 eric 1688: if ((ret == 0 && buffSize >= mtu) || host->forceWriteFlush)
2.13 frystyk 1689: return 0;
2.26 frystyk 1690: return host->delay;
2.35 frystyk 1691: #else
1692: return host->forceWriteFlush ? 0 : host->delay;
1693: #endif
2.13 frystyk 1694: }
1695:
2.26 frystyk 1696: PUBLIC BOOL HTHost_setDefaultWriteDelay (ms_t delay)
1697: {
1698: if (delay >= 0) {
1699: WriteDelay = delay;
2.59 frystyk 1700: HTTRACE(CORE_TRACE, "Host........ Default write delay is %d ms\n" _ delay);
2.26 frystyk 1701: return YES;
1702: }
1703: return NO;
1704: }
1705:
1706: PUBLIC ms_t HTHost_defaultWriteDelay (void)
1707: {
1708: return WriteDelay;
1709: }
1710:
2.13 frystyk 1711: PUBLIC int HTHost_forceFlush(HTHost * host)
1712: {
2.35 frystyk 1713: HTNet * targetNet = (HTNet *) HTList_lastObject(host->pipeline);
2.13 frystyk 1714: int ret;
2.35 frystyk 1715: if (targetNet == NULL) return HT_ERROR;
2.72 kahan 1716: /* 2000/28/07 JK: The following test was proposed by Heiner Kallweit, as there's a problem
2.71 kahan 1717: ** while using SSL because of a recursive call to this function. We tested the
1718: ** fix and it doesn't seem to introduce any side effects... but one never knows,
1719: ** thus this comment. This seems more like a bug in the SSL code than here.
1720: */
1721: if (host->inFlush) {
1722: HTTRACE(CORE_TRACE, "Host Event.. FLUSH requested for `%s\'\n, but ignoring it as we're already processing a flush in this host" _
1723: HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet))));
1724: return HT_OK;
1725: }
2.59 frystyk 1726: HTTRACE(CORE_TRACE, "Host Event.. FLUSH passed to `%s\'\n" _
2.28 frystyk 1727: HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet))));
2.13 frystyk 1728: host->forceWriteFlush = YES;
2.71 kahan 1729: host->inFlush = YES;
2.13 frystyk 1730: ret = (*targetNet->event.cbf)(HTChannel_socket(host->channel), targetNet->event.param, HTEvent_FLUSH);
2.35 frystyk 1731: host->forceWriteFlush = NO;
2.71 kahan 1732: host->inFlush = NO;
2.13 frystyk 1733: return ret;
2.39 frystyk 1734: }
1735:
1736: /*
1737: ** Context pointer to be used as a user defined context
1738: */
1739: PUBLIC void HTHost_setContext (HTHost * me, void * context)
1740: {
2.40 kahan 1741: if (me) me->context = context;
2.39 frystyk 1742: }
1743:
1744: PUBLIC void * HTHost_context (HTHost * me)
1745: {
2.40 kahan 1746: return me ? me->context : NULL;
2.1 frystyk 1747: }
2.11 kahan 1748:
2.13 frystyk 1749: PUBLIC int HTHost_eventTimeout (void)
1750: {
1751: return EventTimeout;
1752: }
2.11 kahan 1753:
2.13 frystyk 1754: PUBLIC void HTHost_setEventTimeout (int millis)
1755: {
1756: EventTimeout = millis;
2.59 frystyk 1757: HTTRACE(CORE_TRACE, "Host........ Setting event timeout to %d ms\n" _ millis);
2.13 frystyk 1758: }
2.40 kahan 1759:
2.45 frystyk 1760: PUBLIC BOOL HTHost_setMaxPipelinedRequests (int max)
1761: {
1762: if (max > 1) {
1763: MaxPipelinedRequests = max;
1764: return YES;
1765: }
1766: return NO;
1767: }
2.40 kahan 1768:
2.45 frystyk 1769: PUBLIC int HTHost_maxPipelinedRequests (void)
2.40 kahan 1770: {
2.45 frystyk 1771: return MaxPipelinedRequests;
1772: }
1773:
1774: PUBLIC void HTHost_setActivateRequestCallback (HTHost_ActivateRequestCallback * cbf)
1775: {
2.59 frystyk 1776: HTTRACE(CORE_TRACE, "HTHost...... Registering %p\n" _ cbf);
2.40 kahan 1777: ActivateReqCBF = cbf;
1778: }
1779:
2.45 frystyk 1780: PRIVATE int HTHost_ActivateRequest (HTNet * net)
2.40 kahan 1781: {
2.45 frystyk 1782: HTRequest * request = NULL;
1783: if (!ActivateReqCBF) {
2.59 frystyk 1784: HTTRACE(CORE_TRACE, "HTHost...... No ActivateRequest callback handler registered\n");
2.45 frystyk 1785: return HT_ERROR;
1786: }
1787: request = HTNet_request(net);
1788: return (*ActivateReqCBF)(request);
2.40 kahan 1789: }
1790:
1791: PUBLIC void HTHost_disable_PendingReqLaunch (void)
1792: {
2.45 frystyk 1793: DoPendingReqLaunch = NO;
2.40 kahan 1794: }
1795:
1796: PUBLIC void HTHost_enable_PendingReqLaunch (void)
1797: {
2.45 frystyk 1798: DoPendingReqLaunch = YES;
2.40 kahan 1799: }
1800:
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