Annotation of libwww/Library/src/HTHost.c, revision 2.28
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.
2.28 ! frystyk 6: ** @(#) $Id: HTHost.c,v 2.27 1997/02/04 16:04:29 frystyk 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 */
16: #include "sysdep.h"
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:
28: #define HOST_TIMEOUT 43200L /* Default host timeout is 12 h */
29: #define TCP_TIMEOUT 3600L /* Default TCP timeout i 1 h */
2.19 frystyk 30: #define MAX_PIPES 50 /* maximum number of pipelined requests */
2.24 frystyk 31: #define MAX_HOST_RECOVER 3 /* Max number of auto recovery */
2.27 frystyk 32: #define DEFAULT_DELAY 50 /* Default write flush delay in ms */
2.1 frystyk 33:
2.13 frystyk 34: struct _HTInputStream {
35: const HTInputStreamClass * isa;
2.1 frystyk 36: };
37:
2.13 frystyk 38: PRIVATE int HostEvent(SOCKET soc, void * pVoid, HTEventType type);
39:
40: /* Type definitions and global variables etc. local to this module */
2.1 frystyk 41: PRIVATE time_t HostTimeout = HOST_TIMEOUT; /* Timeout on host entries */
42: PRIVATE time_t TCPTimeout = TCP_TIMEOUT; /* Timeout on persistent channels */
43:
2.8 frystyk 44: PRIVATE HTList ** HostTable = NULL;
45: PRIVATE HTList * PendHost = NULL; /* List of pending host elements */
2.1 frystyk 46:
2.13 frystyk 47: PRIVATE int EventTimeout = -1; /* Global Host event timeout */
48:
2.26 frystyk 49: PRIVATE WriteDelay = DEFAULT_DELAY; /* Delay in ms */
50:
2.1 frystyk 51: /* ------------------------------------------------------------------------- */
52:
53: PRIVATE void free_object (HTHost * me)
54: {
55: if (me) {
56: HT_FREE(me->hostname);
57: HT_FREE(me->type);
2.12 frystyk 58: HT_FREE(me->server);
59: HT_FREE(me->user_agent);
60: HT_FREE(me->range_units);
2.3 eric 61: if (me->channel) {
2.5 eric 62: HTChannel_delete(me->channel, HT_OK);
2.3 eric 63: me->channel = NULL;
64: }
2.18 eric 65: {
66: int i;
67: for (i = 0; i < HTEvent_TYPES; i++)
68: HTEvent_delete(me->events[i]);
69: }
2.8 frystyk 70: HTList_delete(me->pipeline);
71: HTList_delete(me->pending);
2.1 frystyk 72: HT_FREE(me);
73: }
74: }
75:
76: PRIVATE BOOL delete_object (HTList * list, HTHost * me)
77: {
2.2 frystyk 78: if (CORE_TRACE) HTTrace("Host info... object %p from list %p\n", me, list);
2.1 frystyk 79: HTList_removeObject(list, (void *) me);
80: free_object(me);
81: return YES;
82: }
83:
2.13 frystyk 84: PRIVATE BOOL isLastInPipe (HTHost * host, HTNet * net)
85: {
86: return HTList_lastObject(host->pipeline) == net;
87: }
88:
89: /*
90: ** HostEvent - host event manager - recieves events from the event
91: ** manager and dispatches them to the client net objects by calling the
92: ** net object's cbf.
93: **
94: */
95: PRIVATE int HostEvent (SOCKET soc, void * pVoid, HTEventType type)
96: {
97: HTHost * host = (HTHost *)pVoid;
98:
2.18 eric 99: if (type == HTEvent_READ || type == HTEvent_CLOSE) {
2.13 frystyk 100: HTNet * targetNet;
101:
102: /* call the first net object */
103: do {
104: int ret;
105: targetNet = (HTNet *)HTList_firstObject(host->pipeline);
106: if (targetNet) {
107: if (CORE_TRACE)
2.28 ! frystyk 108: HTTrace("Host Event.. READ passed to `%s\'\n",
! 109: HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet))));
2.13 frystyk 110: if ((ret = (*targetNet->event.cbf)(HTChannel_socket(host->channel),
111: targetNet->event.param, type)) != HT_OK)
112: return ret;
113: }
114: if (targetNet == NULL && host->remainingRead > 0) {
115: HTTrace("HostEvent... Error: %d bytes left to read and nowhere to put them\n", host->remainingRead);
116: host->remainingRead = 0;
117: /*
118: ** Fall through to close the channel
119: */
120: }
121: /* call pipelined net object to eat all the data in the channel */
122: } while (host->remainingRead > 0);
123:
124: /* last target net should have set remainingRead to 0 */
125: if (targetNet)
126: return HT_OK;
127:
128: /* If there was notargetNet, it should be a close */
2.28 ! frystyk 129: if (CORE_TRACE)
! 130: HTTrace("Host Event.. host %p `%s\' closed connection.\n",
! 131: host, host->hostname);
2.13 frystyk 132:
133: /* Is there garbage in the channel? Let's check: */
134: {
135: char buf[256];
136: int ret;
2.28 ! frystyk 137: memset(buf, '\0', sizeof(buf));
! 138: while ((ret = NETREAD(HTChannel_socket(host->channel), buf, sizeof(buf))) > 0) {
! 139: if (CORE_TRACE)
! 140: HTTrace("Host Event.. Host %p `%s\' had %d extraneous bytes: `%s\'\n",
! 141: host, host->hostname, ret, buf);
! 142: memset(buf, '\0', sizeof(buf));
! 143: }
2.13 frystyk 144: }
145: HTHost_clearChannel(host, HT_OK);
2.28 ! frystyk 146: return HT_OK; /* extra garbage does not constitute an application error */
2.13 frystyk 147:
2.18 eric 148: } else if (type == HTEvent_WRITE || type == HTEvent_CONNECT) {
2.13 frystyk 149: HTNet * targetNet = (HTNet *)HTList_lastObject(host->pipeline);
150: if (targetNet) {
151: if (CORE_TRACE)
2.28 ! frystyk 152: HTTrace("Host Event.. WRITE passed to `%s\'\n",
! 153: HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet))));
2.13 frystyk 154: return (*targetNet->event.cbf)(HTChannel_socket(host->channel), targetNet->event.param, type);
155: }
2.28 ! frystyk 156: HTTrace("Host Event.. Who wants to write to `%s\'?\n", host->hostname);
2.13 frystyk 157: return HT_ERROR;
2.14 frystyk 158: } else if (type == HTEvent_TIMEOUT) {
159:
160: if (CORE_TRACE)
161: HTTrace("Host Event.. WE SHOULD DELETE ALL REQUEST ON `%s\'?\n",
162: host->hostname);
2.13 frystyk 163:
2.14 frystyk 164: } else {
2.28 ! frystyk 165: HTTrace("Don't know how to handle OOB data from `%s\'?\n",
2.14 frystyk 166: host->hostname);
167: }
2.13 frystyk 168: return HT_OK;
169: }
170:
2.1 frystyk 171: /*
172: ** Search the host info cache for a host object or create a new one
173: ** and add it. Examples of host names are
174: **
175: ** www.w3.org
176: ** www.foo.com:8000
177: ** 18.52.0.18
178: **
179: ** Returns Host object or NULL if error. You may get back an already
180: ** existing host object - you're not guaranteed a new one each time.
181: */
2.13 frystyk 182:
2.15 eric 183: PUBLIC HTHost * HTHost_new (char * host, u_short u_port)
2.1 frystyk 184: {
185: HTList * list = NULL; /* Current list in cache */
186: HTHost * pres = NULL;
2.13 frystyk 187: int hash = 0;
2.1 frystyk 188: if (!host) {
2.2 frystyk 189: if (CORE_TRACE) HTTrace("Host info... Bad argument\n");
2.1 frystyk 190: return NULL;
191: }
192:
193: /* Find a hash for this host */
194: {
195: char *ptr;
196: for (ptr=host; *ptr; ptr++)
2.13 frystyk 197: hash = (int) ((hash * 3 + (*(unsigned char *) ptr)) % HOST_HASH_SIZE);
2.1 frystyk 198: if (!HostTable) {
2.13 frystyk 199: if ((HostTable = (HTList **) HT_CALLOC(HOST_HASH_SIZE,
2.1 frystyk 200: sizeof(HTList *))) == NULL)
201: HT_OUTOFMEM("HTHost_find");
202: }
203: if (!HostTable[hash]) HostTable[hash] = HTList_new();
204: list = HostTable[hash];
205: }
206:
207: /* Search the cache */
208: {
209: HTList * cur = list;
210: while ((pres = (HTHost *) HTList_nextObject(cur))) {
2.15 eric 211: if (!strcmp(pres->hostname, host) && u_port == pres->u_port) {
2.8 frystyk 212: if (HTHost_isIdle(pres) && time(NULL)>pres->ntime+HostTimeout){
2.2 frystyk 213: if (CORE_TRACE)
2.1 frystyk 214: HTTrace("Host info... Collecting host info %p\n",pres);
215: delete_object(list, pres);
216: pres = NULL;
217: }
218: break;
219: }
220: }
221: }
222:
2.8 frystyk 223: /* If not found then create new Host object, else use existing one */
2.1 frystyk 224: if (pres) {
225: if (pres->channel) {
2.13 frystyk 226: if (pres->expires && pres->expires < time(NULL)) { /* Cached channel is cold */
2.2 frystyk 227: if (CORE_TRACE)
2.1 frystyk 228: HTTrace("Host info... Persistent channel %p gotten cold\n",
229: pres->channel);
2.5 eric 230: HTChannel_delete(pres->channel, HT_OK);
2.1 frystyk 231: pres->channel = NULL;
232: } else {
2.2 frystyk 233: if (CORE_TRACE)
2.1 frystyk 234: HTTrace("Host info... REUSING CHANNEL %p\n",pres->channel);
235: }
236: }
237: } else {
238: if ((pres = (HTHost *) HT_CALLOC(1, sizeof(HTHost))) == NULL)
239: HT_OUTOFMEM("HTHost_add");
2.13 frystyk 240: pres->hash = hash;
2.1 frystyk 241: StrAllocCopy(pres->hostname, host);
2.15 eric 242: pres->u_port = u_port;
2.1 frystyk 243: pres->ntime = time(NULL);
2.8 frystyk 244: pres->mode = HT_TP_SINGLE;
2.26 frystyk 245: pres->delay = WriteDelay;
2.18 eric 246: {
2.26 frystyk 247: int i;
248: for (i = 0; i < HTEvent_TYPES; i++)
249: pres->events[i]= HTEvent_new(HostEvent, pres, HT_PRIORITY_MAX, EventTimeout);
2.18 eric 250: }
2.2 frystyk 251: if (CORE_TRACE)
2.24 frystyk 252: HTTrace("Host info... added `%s\' with host %p to list %p\n",
253: host, pres, list);
2.1 frystyk 254: HTList_addObject(list, (void *) pres);
255: }
256: return pres;
2.9 frystyk 257: }
258:
2.15 eric 259: PUBLIC HTHost * HTHost_newWParse (HTRequest * request, char * url, u_short u_port)
2.13 frystyk 260: {
261: char * port;
262: char * fullhost = NULL;
263: char * parsedHost = NULL;
264: SockA * sin;
265: HTHost * me;
266: char * proxy = HTRequest_proxy(request);
267:
268: fullhost = HTParse(proxy ? proxy : url, "", PARSE_HOST);
269:
270: /* If there's an @ then use the stuff after it as a hostname */
271: if (fullhost) {
272: char * at_sign;
273: if ((at_sign = strchr(fullhost, '@')) != NULL)
274: parsedHost = at_sign+1;
275: else
276: parsedHost = fullhost;
277: }
278: if (!parsedHost || !*parsedHost) {
279: HTRequest_addError(request, ERR_FATAL, NO, HTERR_NO_HOST,
280: NULL, 0, "HTDoConnect");
281: HT_FREE(fullhost);
282: return NULL;
283: }
284: port = strchr(parsedHost, ':');
285: if (PROT_TRACE)
286: HTTrace("HTDoConnect. Looking up `%s\'\n", parsedHost);
287: if (port) {
288: *port++ = '\0';
289: if (!*port || !isdigit(*port))
290: port = 0;
2.24 frystyk 291: u_port = (u_short) atol(port);
2.13 frystyk 292: }
293: /* Find information about this host */
2.15 eric 294: if ((me = HTHost_new(parsedHost, u_port)) == NULL) {
2.13 frystyk 295: if (PROT_TRACE)HTTrace("HTDoConnect. Can't get host info\n");
296: me->tcpstate = TCP_ERROR;
297: return NULL;
298: }
299: sin = &me->sock_addr;
300: memset((void *) sin, '\0', sizeof(SockA));
301: #ifdef DECNET
302: sin->sdn_family = AF_DECnet;
303: net->sock_addr.sdn_objnum = port ? (unsigned char)(strtol(port, (char **) 0, 10)) : DNP_OBJ;
304: #else /* Internet */
305: sin->sin_family = AF_INET;
2.15 eric 306: sin->sin_port = htons(u_port);
2.13 frystyk 307: #endif
308: HT_FREE(fullhost); /* parsedHost points into fullhost */
309: return me;
310: }
311:
2.9 frystyk 312: /*
313: ** Search the host info cache for a host object. Examples of host names:
314: **
315: ** www.w3.org
316: ** www.foo.com:8000
317: ** 18.52.0.18
318: **
319: ** Returns Host object or NULL if not found.
320: */
321: PUBLIC HTHost * HTHost_find (char * host)
322: {
323: HTList * list = NULL; /* Current list in cache */
324: HTHost * pres = NULL;
325: if (CORE_TRACE)
326: HTTrace("Host info... Looking for `%s\'\n", host ? host : "<null>");
327:
328: /* Find a hash for this host */
329: if (host && HostTable) {
330: int hash = 0;
331: char *ptr;
332: for (ptr=host; *ptr; ptr++)
2.13 frystyk 333: hash = (int) ((hash * 3 + (*(unsigned char *) ptr)) % HOST_HASH_SIZE);
2.9 frystyk 334: if (!HostTable[hash]) return NULL;
335: list = HostTable[hash];
336:
337: /* Search the cache */
338: {
339: HTList * cur = list;
340: while ((pres = (HTHost *) HTList_nextObject(cur))) {
341: if (!strcmp(pres->hostname, host)) {
342: if (time(NULL) > pres->ntime + HostTimeout) {
343: if (CORE_TRACE)
344: HTTrace("Host info... Collecting host %p\n", pres);
345: delete_object(list, pres);
346: pres = NULL;
347: } else {
348: if (CORE_TRACE)
349: HTTrace("Host info... Found `%s\'\n", host);
350: }
351: return pres;
352: }
353: }
354: }
355: }
356: return NULL;
2.1 frystyk 357: }
358:
359: /*
2.8 frystyk 360: ** Get and set the hostname of the remote host
361: */
362: PUBLIC char * HTHost_name (HTHost * host)
363: {
364: return host ? host->hostname : NULL;
365: }
366:
367: /*
2.1 frystyk 368: ** Get and set the type class of the remote host
369: */
370: PUBLIC char * HTHost_class (HTHost * host)
371: {
372: return host ? host->type : NULL;
373: }
374:
375: PUBLIC void HTHost_setClass (HTHost * host, char * s_class)
376: {
377: if (host && s_class) StrAllocCopy(host->type, s_class);
378: }
379:
380: /*
381: ** Get and set the version of the remote host
382: */
383: PUBLIC int HTHost_version (HTHost *host)
384: {
385: return host ? host->version : 0;
386: }
387:
388: PUBLIC void HTHost_setVersion (HTHost * host, int version)
389: {
390: if (host) host->version = version;
391: }
392:
393: /*
394: ** Get and set the cache timeout for persistent entries.
395: ** The default value is TCP_TIMEOUT
396: */
397: PUBLIC void HTHost_setPersistTimeout (time_t timeout)
398: {
399: TCPTimeout = timeout;
400: }
401:
402: PUBLIC time_t HTHost_persistTimeout (time_t timeout)
403: {
404: return TCPTimeout;
405: }
406:
407: /* Persistent Connection Expiration
408: ** --------------------------------
409: ** Should normally not be used. If, then use calendar time.
410: */
411: PUBLIC void HTHost_setPersistExpires (HTHost * host, time_t expires)
412: {
413: if (host) host->expires = expires;
414: }
415:
416: PUBLIC time_t HTHost_persistExpires (HTHost * host)
417: {
418: return host ? host->expires : -1;
419: }
420:
2.22 eric 421: PUBLIC void HTHost_setReqsPerConnection (HTHost * host, int reqs)
422: {
423: if (host) host->reqsPerConnection = reqs;
424: }
425:
426: PUBLIC int HTHost_reqsPerConnection (HTHost * host)
427: {
428: return host ? host->reqsPerConnection : -1;
429: }
430:
431: PUBLIC void HTHost_setReqsMade (HTHost * host, int reqs)
432: {
433: if (host) host->reqsMade = reqs;
434: }
435:
436: PUBLIC int HTHost_reqsMade (HTHost * host)
437: {
438: return host ? host->reqsMade : -1;
439: }
440:
441:
2.1 frystyk 442: /*
2.6 frystyk 443: ** Public methods for this host
444: */
445: PUBLIC HTMethod HTHost_publicMethods (HTHost * me)
446: {
447: return me ? me->methods : METHOD_INVALID;
448: }
449:
450: PUBLIC void HTHost_setPublicMethods (HTHost * me, HTMethod methodset)
451: {
452: if (me) me->methods = methodset;
453: }
454:
455: PUBLIC void HTHost_appendPublicMethods (HTHost * me, HTMethod methodset)
456: {
457: if (me) me->methods |= methodset;
458: }
459:
460: /*
461: ** Get and set the server name of the remote host
462: */
463: PUBLIC char * HTHost_server (HTHost * host)
464: {
465: return host ? host->server : NULL;
466: }
467:
468: PUBLIC BOOL HTHost_setServer (HTHost * host, const char * server)
469: {
470: if (host && server) {
471: StrAllocCopy(host->server, server);
472: return YES;
473: }
474: return NO;
475: }
476:
477: /*
478: ** Get and set the userAgent name of the remote host
479: */
480: PUBLIC char * HTHost_userAgent (HTHost * host)
481: {
482: return host ? host->user_agent : NULL;
483: }
484:
485: PUBLIC BOOL HTHost_setUserAgent (HTHost * host, const char * userAgent)
486: {
487: if (host && userAgent) {
488: StrAllocCopy(host->user_agent, userAgent);
489: return YES;
2.12 frystyk 490: }
491: return NO;
492: }
493:
494: /*
495: ** Get and set acceptable range units
496: */
497: PUBLIC char * HTHost_rangeUnits (HTHost * host)
498: {
499: return host ? host->range_units : NULL;
500: }
501:
502: PUBLIC BOOL HTHost_setRangeUnits (HTHost * host, const char * units)
503: {
504: if (host && units) {
505: StrAllocCopy(host->range_units, units);
506: return YES;
507: }
508: return NO;
509: }
510:
511: /*
512: ** Checks whether a specific range unit is OK. We always say
513: ** YES except if we have a specific statement from the server that
514: ** it doesn't understand byte ranges - that is - it has sent "none"
515: ** in a "Accept-Range" response header
516: */
517: PUBLIC BOOL HTHost_isRangeUnitAcceptable (HTHost * host, const char * unit)
518: {
519: if (host && unit) {
520: #if 0
521: if (host->range_units) {
522: char * start = strcasestr(host->range_units, "none");
523:
524: /*
525: ** Check that "none" is infact a token. It could be part of some
526: ** other valid string, so we'd better check for it.
527: */
528: if (start) {
529:
530:
531: }
532: return NO;
533: }
534: #endif
535: return strcasecomp(unit, "bytes") ? NO : YES;
2.6 frystyk 536: }
537: return NO;
538: }
539:
2.1 frystyk 540: /* HTHost_catchClose
541: ** -----------------
542: ** This function is registered when the socket is idle so that we get
543: ** a notification if the socket closes at the other end. At this point
544: ** we can't use the request object as it might have been freed a long
545: ** time ago.
546: */
2.13 frystyk 547: PUBLIC int HTHost_catchClose (SOCKET soc, void * context, HTEventType type)
2.1 frystyk 548: {
2.13 frystyk 549: HTNet * net = (HTNet *)context;
550: HTHost * host = net->host;
2.2 frystyk 551: if (CORE_TRACE)
2.13 frystyk 552: HTTrace("Catch Close. called with socket %d with type %x\n",
553: soc, type);
554: if (type == HTEvent_READ) {
2.1 frystyk 555: HTChannel * ch = HTChannel_find(soc); /* Find associated channel */
2.8 frystyk 556: HTHost * host = HTChannel_host(ch); /* and associated host */
2.1 frystyk 557: if (ch && host) {
2.2 frystyk 558: if (CORE_TRACE) HTTrace("Catch Close. CLOSING socket %d\n", soc);
2.8 frystyk 559: HTHost_clearChannel(host, HT_OK);
2.1 frystyk 560: } else {
2.2 frystyk 561: if (CORE_TRACE) HTTrace("Catch Close. socket %d NOT FOUND!\n",soc);
2.1 frystyk 562: }
563: }
2.13 frystyk 564: HTHost_unregister(host, net, HTEvent_CLOSE);
2.1 frystyk 565: return HT_OK;
566: }
567:
568: /*
569: ** As soon as we know that this host accepts persistent connections,
570: ** we associated the channel with the host.
571: ** We don't want more than MaxSockets-2 connections to be persistent in
572: ** order to avoid deadlock.
573: */
2.13 frystyk 574: PUBLIC BOOL HTHost_setPersistent (HTHost * host,
575: BOOL persistent,
576: HTTransportMode mode)
2.1 frystyk 577: {
2.13 frystyk 578: if (!host) return NO;
579:
580: if (!persistent) {
581: /*
582: ** We use the HT_IGNORE status code as we don't want to free
583: ** the stream at this point in time. The situation we want to
584: ** avoid is that we free the channel from within the stream pipe.
585: ** This will lead to an infinite look having the stream freing
586: ** itself.
587: */
588: return HTHost_clearChannel(host, HT_IGNORE);
589: }
590:
2.18 eric 591: /*
592: ** Set the host persistent if not already. Also update the mode to
593: ** the new one - it may have changed
594: */
595: HTHost_setMode(host, mode);
596: if (!host->persistent) {
2.13 frystyk 597: SOCKET sockfd = HTChannel_socket(host->channel);
2.8 frystyk 598: if (sockfd != INVSOC && HTNet_availablePersistentSockets() > 0) {
2.13 frystyk 599: host->persistent = YES;
2.1 frystyk 600: host->expires = time(NULL) + TCPTimeout; /* Default timeout */
2.13 frystyk 601: HTChannel_setHost(host->channel, host);
2.8 frystyk 602: HTNet_increasePersistentSocket();
2.2 frystyk 603: if (CORE_TRACE)
2.1 frystyk 604: HTTrace("Host info... added host %p as persistent\n", host);
605: return YES;
606: } else {
2.2 frystyk 607: if (CORE_TRACE)
608: HTTrace("Host info... no room for persistent socket %d\n",
2.7 frystyk 609: sockfd);
2.18 eric 610: return NO;
2.1 frystyk 611: }
2.18 eric 612: } else {
613: if (CORE_TRACE) HTTrace("Host info... %p already persistent\n", host);
614: return YES;
2.1 frystyk 615: }
616: return NO;
617: }
618:
619: /*
2.13 frystyk 620: ** Check whether we have a persistent channel or not
621: */
622: PUBLIC BOOL HTHost_isPersistent (HTHost * host)
623: {
624: return host && host->persistent;
625: }
626:
627: /*
2.1 frystyk 628: ** Find persistent channel associated with this host.
629: */
630: PUBLIC HTChannel * HTHost_channel (HTHost * host)
631: {
632: return host ? host->channel : NULL;
633: }
634:
635: /*
636: ** Clear the persistent entry by deleting the channel object. Note that
637: ** the channel object is only deleted if it's not used anymore.
638: */
2.8 frystyk 639: PUBLIC BOOL HTHost_clearChannel (HTHost * host, int status)
2.1 frystyk 640: {
641: if (host && host->channel) {
2.8 frystyk 642: HTChannel_setHost(host->channel, NULL);
2.10 frystyk 643:
2.13 frystyk 644: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
645: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
2.18 eric 646: host->registeredFor = 0;
2.13 frystyk 647:
2.10 frystyk 648: /*
649: ** We don't want to recursively delete ourselves so if we are
650: ** called from within the stream pipe then don't delete the channel
651: ** at this point
652: */
2.8 frystyk 653: HTChannel_delete(host->channel, status);
2.18 eric 654: host->expires = 0;
2.1 frystyk 655: host->channel = NULL;
2.22 eric 656: host->tcpstate = TCP_BEGIN;
657: host->reqsMade = 0;
2.28 ! frystyk 658: if (HTHost_isPersistent(host)) HTNet_decreasePersistentSocket();
! 659: if (CORE_TRACE) HTTrace("Host info... removed host %p as persistent\n", host);
2.1 frystyk 660: return YES;
661: }
662: return NO;
663: }
664:
665: /*
2.18 eric 666: ** Move all entries in the pipeline and move the rest to the pending
667: ** queue. They will get launched at a later point in time.
668: */
669: PUBLIC BOOL HTHost_recoverPipe (HTHost * host)
670: {
671: if (host) {
672: int piped = HTList_count(host->pipeline);
673: if (piped > 0) {
674: int cnt;
2.24 frystyk 675: host->recovered++;
2.18 eric 676: if (CORE_TRACE)
2.24 frystyk 677: HTTrace("Host recovered %d times. Moving %d Net objects from pipe line to pending queue\n",
678: host->recovered, piped);
2.18 eric 679:
680: /*
681: ** Unregister this host for all events
682: */
683: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
684: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
685: host->registeredFor = 0;
686:
687: /*
688: ** Set new mode to single until we know what is going on
689: */
690: host->mode = HT_TP_SINGLE;
691:
692: /*
693: ** Move all net objects from the net object to the pending queue.
694: */
695: if (!host->pending) host->pending = HTList_new();
696: for (cnt=0; cnt<piped; cnt++) {
697: HTNet * net = HTList_removeLastObject(host->pipeline);
698: if (CORE_TRACE) HTTrace("Host recover Resetting net object %p\n", net);
699: net->registeredFor = 0;
700: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, HTEvent_RESET);
701: HTList_appendObject(host->pending, net);
702: }
703: HTChannel_setSemaphore(host->channel, 0);
704: HTHost_clearChannel(host, HT_INTERRUPTED);
705: }
2.24 frystyk 706: #if 0
707: /*
708: ** We don't wanna change state here
709: */
2.18 eric 710: return HTHost_launchPending(host);
2.24 frystyk 711: #else
712: return YES;
713: #endif
2.18 eric 714: }
715: return NO;
716: }
717:
718: /*
2.8 frystyk 719: ** Handle the connection mode. The mode may change mode in the
720: ** middle of a connection.
721: */
722: PUBLIC HTTransportMode HTHost_mode (HTHost * host, BOOL * active)
723: {
724: return host ? host->mode : HT_TP_SINGLE;
725: }
726:
727: /*
728: ** If the new mode is lower than the old mode then adjust the pipeline
729: ** accordingly. That is, if we are going into single mode then move
730: ** all entries in the pipeline and move the rest to the pending
731: ** queue. They will get launched at a later point in time.
732: */
733: PUBLIC BOOL HTHost_setMode (HTHost * host, HTTransportMode mode)
734: {
735: if (host) {
736: /*
737: ** Check the new mode and see if we must adjust the queues.
738: */
739: if (mode == HT_TP_SINGLE && host->mode > mode) {
740: int piped = HTList_count(host->pipeline);
741: if (piped > 0) {
742: int cnt;
743: if (CORE_TRACE)
744: HTTrace("Host info... Moving %d Net objects from pipe line to pending queue\n", piped);
745: if (!host->pending) host->pending = HTList_new();
746: for (cnt=0; cnt<piped; cnt++) {
2.18 eric 747: HTNet * net = HTList_removeLastObject(host->pipeline);
748: if (CORE_TRACE) HTTrace("Host info... Resetting net object %p\n", net);
2.13 frystyk 749: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, HTEvent_RESET);
2.8 frystyk 750: HTList_appendObject(host->pending, net);
751: }
2.18 eric 752: HTChannel_setSemaphore(host->channel, 0);
753: HTHost_clearChannel(host, HT_INTERRUPTED);
2.8 frystyk 754: }
2.24 frystyk 755: }
756:
757: /*
758: ** If we know that this host is bad then we don't allow anything than
759: ** single mode. We can't recover connections for the rest of our life
760: */
761: if (mode == HT_TP_PIPELINE && host->recovered > MAX_HOST_RECOVER) {
762: if (PROT_TRACE)
763: HTTrace("Host info... %p is bad for pipelining so we won't do it!!!\n",
764: host);
765: } else {
766: host->mode = mode;
767: if (PROT_TRACE)
768: HTTrace("Host info... New mode is %d for host %p\n", host->mode, host);
769: }
2.8 frystyk 770: }
771: return NO;
772: }
773:
774: /*
775: ** Check whether a host is idle meaning if it is ready for a new
776: ** request which depends on the mode of the host. If the host is
777: ** idle, i.e. ready for use then return YES else NO. If the host supports
778: ** persistent connections then still only return idle if no requests are
779: ** ongoing.
780: */
781: PUBLIC BOOL HTHost_isIdle (HTHost * host)
782: {
783: return (host && HTList_count(host->pipeline) <= 0);
784: }
785:
2.13 frystyk 786: PRIVATE BOOL _roomInPipe (HTHost * host)
787: {
788: int count;
789: if (!host) return NO;
2.22 eric 790: if (host->reqsPerConnection && host->reqsMade >= host->reqsPerConnection)
791: return 0;
2.13 frystyk 792: count = HTList_count(host->pipeline);
793: switch (host->mode) {
794: case HT_TP_SINGLE:
795: return count <= 0;
796: case HT_TP_PIPELINE:
797: return count < MAX_PIPES;
798: case HT_TP_INTERLEAVE:
799: return YES;
800: }
801: return NO;
802: }
803:
2.8 frystyk 804: /*
805: ** Add a net object to the host object. If the host
806: ** is idle then add to active list (pipeline) else add
807: ** it to the pending list
808: ** Return HT_PENDING if we must pend, HT_OK, or HT_ERROR
809: */
810: PUBLIC int HTHost_addNet (HTHost * host, HTNet * net)
811: {
812: if (host && net) {
813: int status = HT_OK;
814:
2.18 eric 815: /*
816: ** If we don't have a socket already then check to see if we can get
817: ** one. Otherwise we put the host object into our pending queue.
818: */
819: if (!host->channel && HTNet_availableSockets() <= 0) {
2.8 frystyk 820: if (!PendHost) PendHost = HTList_new();
821: if (CORE_TRACE)
822: HTTrace("Host info... Add Host %p as pending\n", host);
823: HTList_addObject(PendHost, host);
824: status = HT_PENDING;
825: }
826:
2.18 eric 827: /*
828: ** Add net object to either active or pending queue.
829: */
2.13 frystyk 830: if (_roomInPipe(host)) {
2.8 frystyk 831: if (CORE_TRACE) HTTrace("Host info... Add Net %p to pipeline of host %p\n", net, host);
832: if (!host->pipeline) host->pipeline = HTList_new();
833: HTList_addObject(host->pipeline, net);
2.18 eric 834:
2.13 frystyk 835: /*
836: ** Send out the request if we're not blocked on write
837: */
2.23 eric 838: #if 0
2.13 frystyk 839: if (!(host->registeredFor & HTEvent_BITS(HTEvent_WRITE)))
840: status = HTHost_launchPending(host) == YES ? HT_OK : HT_ERROR;
2.23 eric 841: #endif
2.8 frystyk 842: } else {
843: if (CORE_TRACE) HTTrace("Host info... Add Net %p as pending\n", net);
844: if (!host->pending) host->pending = HTList_new();
845: HTList_addObject(host->pending, net);
846: status = HT_PENDING;
847: }
848: return status;
849: }
850: return HT_ERROR;
851: }
852:
2.13 frystyk 853: PUBLIC BOOL HTHost_free (HTHost * host, int status)
854: {
855: if (host->channel == NULL) return NO;
2.25 frystyk 856: #if 0
2.23 eric 857: if (host->persistent && !(host->reqsMade >= host->reqsPerConnection && HTList_count(host->pipeline) <= 1))
2.25 frystyk 858: #else
859: /* Check this with FTP as well */
860: if (host->persistent &&
861: (!host->reqsPerConnection ||
862: (host->reqsPerConnection && host->reqsMade < host->reqsPerConnection)))
863: #endif
2.23 eric 864: {
2.13 frystyk 865: if (CORE_TRACE)
866: HTTrace("Host Object. keeping socket %d\n", HTChannel_socket(host->channel));
867: HTChannel_delete(host->channel, status);
868: } else {
869: if (CORE_TRACE)
870: HTTrace("Host Object. closing socket %d\n", HTChannel_socket(host->channel));
871:
872: /*
873: ** By lowering the semaphore we make sure that the channel
874: ** is gonna be deleted
875: */
2.23 eric 876: #if 1
877: HTChannel_downSemaphore(host->channel);
878: HTHost_clearChannel(host, status);
879: #else
2.13 frystyk 880: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
881: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
882: host->registeredFor = 0;
883: HTChannel_downSemaphore(host->channel);
884: HTChannel_delete(host->channel, status);
885: host->channel = NULL;
2.22 eric 886: host->tcpstate = TCP_BEGIN;
2.23 eric 887: #endif
2.13 frystyk 888: }
889: return YES;
890: }
891:
2.8 frystyk 892: PUBLIC BOOL HTHost_deleteNet (HTHost * host, HTNet * net)
893: {
894: if (host && net) {
895: if (CORE_TRACE)
896: HTTrace("Host info... Remove Net %p from pipe line\n", net);
897: HTList_removeObject(host->pipeline, net);
898: HTList_removeObject(host->pending, net);
899: return YES;
900: }
901: return NO;
902: }
903:
904: /*
905: ** Handle pending host objects.
906: ** There are two ways we can end up with pending reqyests:
907: ** 1) If we are out of sockets then register new host objects as pending.
908: ** 2) If we are pending on a connection then register new net objects as
909: ** pending
910: ** This set of functions handles pending host objects and can start new
911: ** requests as resources get available
912: */
913:
914: /*
915: ** Check this host object for any pending requests and return the next
916: ** registered Net object.
917: */
918: PUBLIC HTNet * HTHost_nextPendingNet (HTHost * host)
919: {
920: HTNet * net = NULL;
921: if (host && host->pending && host->pipeline) {
2.18 eric 922: /*JK 23/Sep/96 Bug correction. Associated the following lines to the
923: **above if. There was a missing pair of brackets.
924: */
925: if ((net = (HTNet *) HTList_removeFirstObject(host->pending)) != NULL) {
926: if (PROT_TRACE)
927: HTTrace("Host info... Popping %p from pending net queue\n", net);
2.22 eric 928: /* HTList_addObject(host->pipeline, net); */
2.18 eric 929: }
2.8 frystyk 930: }
931: return net;
932: }
933:
934: /*
2.13 frystyk 935: ** Return the current list of pending host objects waiting for a socket
2.8 frystyk 936: */
937: PUBLIC HTHost * HTHost_nextPendingHost (void)
938: {
939: HTHost * host = NULL;
940: if (PendHost) {
941: if ((host = (HTHost *) HTList_removeFirstObject(PendHost)) != NULL)
942: if (PROT_TRACE)
943: HTTrace("Host info... Poping %p from pending host queue\n",
944: host);
945: }
946: return host;
947: }
948:
949: /*
950: ** Start the next pending request if any. First we look for pending
951: ** requests for the same host and then we check for any other pending
952: ** hosts
953: */
954: PUBLIC BOOL HTHost_launchPending (HTHost * host)
955: {
956: int available = HTNet_availableSockets();
957:
958: if (!host) {
959: if (PROT_TRACE) HTTrace("Host info... Bad arguments\n");
960: return NO;
961: }
962:
963: /*
964: ** Check if we do have resources available for a new request
965: ** This can either be reusing an existing connection or opening a new one
966: */
967: if (available > 0 || host->mode >= HT_TP_PIPELINE) {
2.23 eric 968: HTNet * net;
2.8 frystyk 969:
970: /*
2.13 frystyk 971: ** In pipeline we can only have one doing writing at a time.
972: ** We therefore check that there are no other Net object
973: ** registered for write
974: */
975: if (host->mode == HT_TP_PIPELINE) {
2.23 eric 976: net = (HTNet *) HTList_lastObject(host->pipeline);
977: if (net && net->registeredFor == HTEvent_WRITE)
2.13 frystyk 978: return NO;
979: }
980:
981: /*
982: ** Check the current Host object for pending Net objects
2.23 eric 983: **
984: ** Send out as many as will fit in pipe.
2.8 frystyk 985: */
2.23 eric 986: while (_roomInPipe(host) && (net = HTHost_nextPendingNet(host))) {
987: int status = HTNet_execute(net, HTEvent_WRITE);
988: if (status != HT_OK)
989: return status;
2.8 frystyk 990: }
991:
992: /*
993: ** Check for other pending Host objects
994: */
995: {
996: HTHost * pending = HTHost_nextPendingHost();
997: if (pending) {
998: HTNet * net = HTHost_nextPendingNet(pending);
2.13 frystyk 999: if (net) return HTNet_execute(net, HTEvent_WRITE);
2.8 frystyk 1000: }
1001: }
2.13 frystyk 1002: } else
1003: if (PROT_TRACE) HTTrace("Host info... No more requests.\n");
1004: return NO;
1005: }
1006:
1007: PUBLIC HTNet * HTHost_firstNet (HTHost * host)
1008: {
1009: return (HTNet *) HTList_firstObject(host->pipeline);
1010: }
1011:
1012: /*
1013: ** The host event manager keeps track of the state of it's client engines
1014: ** (typically HTTPEvent), accepting multiple blocks on read or write from
1015: ** multiple pipelined engines. It then registers its own engine
1016: ** (HostEvent) with the event manager.
1017: */
1018: PUBLIC int HTHost_connect (HTHost * host, HTNet * net, char * url, HTProtocolId port)
1019: {
1020: int status;
2.18 eric 1021: /* if (host && host->connecttime)
2.13 frystyk 1022: return HT_OK;
2.18 eric 1023: */
2.13 frystyk 1024: status = HTDoConnect(net, url, port);
2.22 eric 1025: if (status == HT_OK) {
1026: HTNet_host(net)->reqsMade++; /* @@@ - what if there's a connect but no req sent? */
2.13 frystyk 1027: return HT_OK;
2.22 eric 1028: }
2.13 frystyk 1029: if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1030: return HT_WOULD_BLOCK;
1031: return HT_ERROR; /* @@@ - some more deletion and stuff here? */
1032: }
1033:
1034: /*
1035: ** Rules: SINGLE: one element in pipe, either reading or writing
1036: ** PIPE: n element in pipe, n-1 reading, 1 writing
1037: */
1038: PUBLIC int HTHost_register (HTHost * host, HTNet * net, HTEventType type)
1039: {
1040: if (host && net) {
1041:
2.28 ! frystyk 1042: if (type == HTEvent_CLOSE) {
2.13 frystyk 1043:
2.28 ! frystyk 1044: /*
! 1045: ** Unregister this host for all events
! 1046: */
! 1047: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
! 1048: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
! 1049: host->registeredFor = 0;
2.13 frystyk 1050: return YES;
2.28 ! frystyk 1051:
! 1052: } else {
! 1053:
! 1054: /* net object may already be registered */
! 1055: if (HTEvent_BITS(type) & net->registeredFor)
! 1056: return NO;
! 1057: net->registeredFor ^= HTEvent_BITS(type);
! 1058:
! 1059: /* host object may already be registered */
! 1060: if (host->registeredFor & HTEvent_BITS(type))
! 1061: return YES;
! 1062: host->registeredFor ^= HTEvent_BITS(type);
! 1063: return HTEvent_register(HTChannel_socket(host->channel),
! 1064: type, *(host->events+HTEvent_INDEX(type)));
! 1065: }
2.13 frystyk 1066: }
1067: return NO;
1068: }
1069:
1070: PUBLIC int HTHost_unregister (HTHost * host, HTNet * net, HTEventType type)
1071: {
1072: if (host && net) {
1073:
2.28 ! frystyk 1074: /* net object may not be registered */
2.13 frystyk 1075: if (!(HTEvent_BITS(type) & net->registeredFor))
1076: return NO;
1077: net->registeredFor ^= HTEvent_BITS(type);
1078:
2.28 ! frystyk 1079: /* host object may not be registered */
2.13 frystyk 1080: if (!(host->registeredFor & HTEvent_BITS(type)))
1081: return YES;
1082: host->registeredFor ^= HTEvent_BITS(type);
1083:
1084: /* stay registered for READ to catch a socket close */
1085: /* WRITE and CONNECT can be unregistered, though */
1086: if ((type == HTEvent_WRITE && isLastInPipe(host, net)) ||
1087: type == HTEvent_CONNECT)
1088: /* if we are blocked downstream, shut down the whole pipe */
1089: HTEvent_unregister(HTChannel_socket(host->channel), type);
1090: return YES;
1091: }
1092: return NO;
1093: }
1094:
1095: /*
1096: ** The reader tells HostEvent that it's stream did not finish the data
1097: */
1098: PUBLIC BOOL HTHost_setRemainingRead (HTHost * host, size_t remaining)
1099: {
1100: if (host == NULL) return NO;
1101: host->remainingRead = remaining;
2.20 frystyk 1102: if (PROT_TRACE) HTTrace("Host........ %d bytes remaining \n", remaining);
2.13 frystyk 1103: return YES;
1104: }
1105:
1106: PUBLIC SockA * HTHost_getSockAddr (HTHost * host)
1107: {
1108: if (!host) return NULL;
1109: return &host->sock_addr;
1110: }
1111:
1112: PUBLIC BOOL HTHost_setHome (HTHost * host, int home)
1113: {
1114: if (!host) return NO;
1115: host->home = home;
1116: return YES;
1117: }
1118:
1119: PUBLIC int HTHost_home (HTHost * host)
1120: {
1121: if (!host) return 0;
1122: return host->home;
1123: }
1124:
2.27 frystyk 1125: PUBLIC BOOL HTHost_setRetry (HTHost * host, int retry)
1126: {
1127: if (!host) return NO;
1128: host->retry = retry;
1129: return YES;
1130: }
1131:
1132: PUBLIC BOOL HTHost_decreaseRetry (HTHost * host)
1133: {
1134: if (!host) {
1135: if (host->retry > 0) host->retry--;
1136: return YES;
1137: }
1138: return NO;
1139: }
1140:
1141: PUBLIC int HTHost_retry (HTHost * host)
1142: {
1143: if (!host) return 0;
1144: return host->retry;
1145: }
1146:
2.13 frystyk 1147: #if 0 /* Is a macro right now */
2.21 frystyk 1148: PRIVATE BOOL HTHost_setDNS5 (HTHost * host, HTdns * dns)
2.13 frystyk 1149: {
1150: if (!host) return NO;
1151: host->dns = dns;
1152: return YES;
1153: }
1154: #endif
1155:
1156: PUBLIC BOOL HTHost_setChannel (HTHost * host, HTChannel * channel)
1157: {
1158: if (!host) return NO;
1159: host->channel = channel;
1160: return YES;
1161: }
1162:
1163: PUBLIC HTNet * HTHost_getReadNet(HTHost * host)
1164: {
1165: if (host) {
1166: if (host->mode == HT_TP_INTERLEAVE) {
2.21 frystyk 1167: #ifdef HT_MUX
2.13 frystyk 1168: HTMuxChannel * muxch = HTMuxChannel_find(host);
1169: return HTMuxChannel_net(muxch);
2.21 frystyk 1170: #endif
2.13 frystyk 1171: }
1172: return (HTNet *) HTList_firstObject(host->pipeline);
1173: }
1174: return NULL;
1175: }
1176:
1177: PUBLIC HTNet * HTHost_getWriteNet(HTHost * host)
1178: {
1179: return host ? (HTNet *) HTList_lastObject(host->pipeline) : NULL;
1180: }
1181:
1182: /*
1183: ** Create the input stream and bind it to the channel
1184: ** Please read the description in the HTIOStream module for the parameters
1185: */
1186: PUBLIC HTInputStream * HTHost_getInput (HTHost * host, HTTransport * tp,
1187: void * param, int mode)
1188: {
1189: if (host && host->channel && tp) {
1190: HTChannel * ch = host->channel;
1191: HTInputStream * input = (*tp->input_new)(host, ch, param, mode);
1192: HTChannel_setInput(ch, input);
1193: return HTChannel_getChannelIStream(ch);
1194: }
2.24 frystyk 1195: if (CORE_TRACE) HTTrace("Host Object. Can't create input stream\n");
2.13 frystyk 1196: return NULL;
1197: }
1198:
1199: PUBLIC HTOutputStream * HTHost_getOutput (HTHost * host, HTTransport * tp,
1200: void * param, int mode)
1201: {
1202: if (host && host->channel && tp) {
1203: HTChannel * ch = host->channel;
1204: HTOutputStream * output = (*tp->output_new)(host, ch, param, mode);
1205: HTChannel_setOutput(ch, output);
1206: return output;
1207: }
2.24 frystyk 1208: if (CORE_TRACE) HTTrace("Host Object. Can't create output stream\n");
2.13 frystyk 1209: return NULL;
1210: }
1211:
1212: PUBLIC HTOutputStream * HTHost_output (HTHost * host, HTNet * net)
1213: {
1214: if (host && host->channel && net) {
1215: HTOutputStream * output = HTChannel_output(host->channel);
2.8 frystyk 1216:
1217: /*
2.13 frystyk 1218: ** If we are in MUX mode then create new output stream on top
1219: ** of the already existing one. Otherwise just return what we
1220: ** have.
2.8 frystyk 1221: */
2.13 frystyk 1222: if (host->mode == HT_TP_INTERLEAVE) {
2.21 frystyk 1223: #ifdef HT_MUX
2.13 frystyk 1224: HTStream * target = (HTStream *) HTChannel_output(host->channel);
1225: output = HTMuxWriter_new(host, net, target);
2.21 frystyk 1226: #endif
2.8 frystyk 1227: }
2.13 frystyk 1228: return output;
1229: }
1230: return NULL;
1231: }
1232:
1233: PUBLIC int HTHost_read(HTHost * host, HTNet * net)
1234: {
1235: HTInputStream * input = HTChannel_input(host->channel);
1236: if (net != HTHost_getReadNet(host)) {
1237: HTHost_register(host, net, HTEvent_READ);
1238: return HT_WOULD_BLOCK;
1239: }
2.17 frystyk 1240:
1241: /*
1242: ** If there is no input channel then this can either mean that
1243: ** we have lost the channel or an error occurred. We return
1244: ** HT_CLOSED as this is a sign to the caller that we don't
1245: ** have a channel
1246: */
1247: return input ? (*input->isa->read)(input) : HT_CLOSED;
2.13 frystyk 1248: }
1249:
1250: PUBLIC BOOL HTHost_setConsumed(HTHost * host, size_t bytes)
1251: {
1252: HTInputStream * input;
1253: if (!host || !host->channel) return NO;
1254: if ((input = HTChannel_input(host->channel)) == NULL)
1255: return NO;
2.20 frystyk 1256: if (PROT_TRACE)
1257: HTTrace("Host........ passing %d bytes as consumed to %p\n", bytes, input);
2.13 frystyk 1258: return (*input->isa->consumed)(input, bytes);
1259: }
1260:
1261: PUBLIC int HTHost_hash (HTHost * host)
1262: {
1263: return host ? host->hash : -1;
1264: }
1265:
2.26 frystyk 1266: PUBLIC BOOL HTHost_setWriteDelay (HTHost * host, ms_t delay)
2.13 frystyk 1267: {
2.26 frystyk 1268: if (host && delay >= 0) {
1269: host->delay = delay;
1270: return YES;
1271: }
1272: return NO;
1273: }
1274:
1275: PUBLIC ms_t HTHost_writeDelay (HTHost * host)
1276: {
1277: return host ? host->delay : 0;
1278: }
1279:
1280: PUBLIC int HTHost_findWriteDelay (HTHost * host, ms_t lastFlushTime, int buffSize)
1281: {
2.15 eric 1282: unsigned short mtu;
2.18 eric 1283: int ret = -1;
2.15 eric 1284: int socket = HTChannel_socket(host->channel);
2.18 eric 1285: #ifndef WWW_MSWINDOWS
2.15 eric 1286: ret = ioctl(socket, 666, (unsigned long)&mtu);
2.18 eric 1287: #endif /* WWW_MSWINDOWS */
2.15 eric 1288: if ((ret == 0 && buffSize >= mtu) || host->forceWriteFlush)
2.13 frystyk 1289: return 0;
2.26 frystyk 1290: return host->delay;
2.13 frystyk 1291: }
1292:
2.26 frystyk 1293: PUBLIC BOOL HTHost_setDefaultWriteDelay (ms_t delay)
1294: {
1295: if (delay >= 0) {
1296: WriteDelay = delay;
1297: if (CORE_TRACE) HTTrace("Host........ Default write delay is %d ms\n", delay);
1298: return YES;
1299: }
1300: return NO;
1301: }
1302:
1303: PUBLIC ms_t HTHost_defaultWriteDelay (void)
1304: {
1305: return WriteDelay;
1306: }
1307:
2.13 frystyk 1308: PUBLIC int HTHost_forceFlush(HTHost * host)
1309: {
1310: HTNet * targetNet = (HTNet *)HTList_lastObject(host->pipeline);
1311: int wasForced = host->forceWriteFlush;
1312: int ret;
1313: if (targetNet == NULL)
1314: return HT_ERROR;
1315: if (CORE_TRACE)
2.28 ! frystyk 1316: HTTrace("Host Event.. FLUSH passed to `%s\'\n",
! 1317: HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet))));
2.13 frystyk 1318: host->forceWriteFlush = YES;
1319: ret = (*targetNet->event.cbf)(HTChannel_socket(host->channel), targetNet->event.param, HTEvent_FLUSH);
1320: host->forceWriteFlush = wasForced;
1321: return ret;
2.1 frystyk 1322: }
2.11 kahan 1323:
2.13 frystyk 1324: PUBLIC int HTHost_eventTimeout (void)
1325: {
1326: return EventTimeout;
1327: }
2.11 kahan 1328:
2.13 frystyk 1329: PUBLIC void HTHost_setEventTimeout (int millis)
1330: {
1331: EventTimeout = millis;
1332: if (CORE_TRACE) HTTrace("Host........ Setting event timeout to %d ms\n", millis);
1333: }
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