Annotation of libwww/Library/src/HTHost.c, revision 2.27
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.
2.27 ! frystyk 6: ** @(#) $Id: HTHost.c,v 2.26 1997/02/01 16:16:23 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)
2.14 frystyk 108: HTTrace(HTHIDE("Host Event.. READ passed to %s.\n"),
2.13 frystyk 109: HTHIDE(HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet)))));
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 */
2.14 frystyk 129: HTTrace(HTHIDE("Host Event.. host %s closed connection.\n"),
2.13 frystyk 130: host->hostname);
131:
132: /* Is there garbage in the channel? Let's check: */
133: {
134: char buf[256];
135: int ret;
136: while ((ret = NETREAD(HTChannel_socket(host->channel), buf, sizeof(buf))) > 0)
2.22 eric 137: HTTrace(HTHIDE("Host Event.. Host %s had %d extraneous bytes.\n"), host->hostname, ret);
2.13 frystyk 138: }
139: HTHost_clearChannel(host, HT_OK);
140: return HT_OK; /* extra garbage does not constitute an application error */
141:
2.18 eric 142: } else if (type == HTEvent_WRITE || type == HTEvent_CONNECT) {
2.13 frystyk 143: HTNet * targetNet = (HTNet *)HTList_lastObject(host->pipeline);
144: if (targetNet) {
145: if (CORE_TRACE)
2.14 frystyk 146: HTTrace(HTHIDE("Host Event.. WRITE passed to %s.\n"),
2.13 frystyk 147: HTHIDE(HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet)))));
148: return (*targetNet->event.cbf)(HTChannel_socket(host->channel), targetNet->event.param, type);
149: }
2.14 frystyk 150: HTTrace(HTHIDE("Host Event.. Who wants to write to %s?\n"), host->hostname);
2.13 frystyk 151: return HT_ERROR;
2.14 frystyk 152: } else if (type == HTEvent_TIMEOUT) {
153:
154: if (CORE_TRACE)
155: HTTrace("Host Event.. WE SHOULD DELETE ALL REQUEST ON `%s\'?\n",
156: host->hostname);
2.13 frystyk 157:
2.14 frystyk 158: } else {
159: HTTrace(HTHIDE("Don't know how to handle OOB data from %s?\n"),
160: host->hostname);
161: }
2.13 frystyk 162: return HT_OK;
163: }
164:
2.1 frystyk 165: /*
166: ** Search the host info cache for a host object or create a new one
167: ** and add it. Examples of host names are
168: **
169: ** www.w3.org
170: ** www.foo.com:8000
171: ** 18.52.0.18
172: **
173: ** Returns Host object or NULL if error. You may get back an already
174: ** existing host object - you're not guaranteed a new one each time.
175: */
2.13 frystyk 176:
2.15 eric 177: PUBLIC HTHost * HTHost_new (char * host, u_short u_port)
2.1 frystyk 178: {
179: HTList * list = NULL; /* Current list in cache */
180: HTHost * pres = NULL;
2.13 frystyk 181: int hash = 0;
2.1 frystyk 182: if (!host) {
2.2 frystyk 183: if (CORE_TRACE) HTTrace("Host info... Bad argument\n");
2.1 frystyk 184: return NULL;
185: }
186:
187: /* Find a hash for this host */
188: {
189: char *ptr;
190: for (ptr=host; *ptr; ptr++)
2.13 frystyk 191: hash = (int) ((hash * 3 + (*(unsigned char *) ptr)) % HOST_HASH_SIZE);
2.1 frystyk 192: if (!HostTable) {
2.13 frystyk 193: if ((HostTable = (HTList **) HT_CALLOC(HOST_HASH_SIZE,
2.1 frystyk 194: sizeof(HTList *))) == NULL)
195: HT_OUTOFMEM("HTHost_find");
196: }
197: if (!HostTable[hash]) HostTable[hash] = HTList_new();
198: list = HostTable[hash];
199: }
200:
201: /* Search the cache */
202: {
203: HTList * cur = list;
204: while ((pres = (HTHost *) HTList_nextObject(cur))) {
2.15 eric 205: if (!strcmp(pres->hostname, host) && u_port == pres->u_port) {
2.8 frystyk 206: if (HTHost_isIdle(pres) && time(NULL)>pres->ntime+HostTimeout){
2.2 frystyk 207: if (CORE_TRACE)
2.1 frystyk 208: HTTrace("Host info... Collecting host info %p\n",pres);
209: delete_object(list, pres);
210: pres = NULL;
211: }
212: break;
213: }
214: }
215: }
216:
2.8 frystyk 217: /* If not found then create new Host object, else use existing one */
2.1 frystyk 218: if (pres) {
219: if (pres->channel) {
2.13 frystyk 220: if (pres->expires && pres->expires < time(NULL)) { /* Cached channel is cold */
2.2 frystyk 221: if (CORE_TRACE)
2.1 frystyk 222: HTTrace("Host info... Persistent channel %p gotten cold\n",
223: pres->channel);
2.5 eric 224: HTChannel_delete(pres->channel, HT_OK);
2.1 frystyk 225: pres->channel = NULL;
226: } else {
2.2 frystyk 227: if (CORE_TRACE)
2.1 frystyk 228: HTTrace("Host info... REUSING CHANNEL %p\n",pres->channel);
229: }
230: }
231: } else {
232: if ((pres = (HTHost *) HT_CALLOC(1, sizeof(HTHost))) == NULL)
233: HT_OUTOFMEM("HTHost_add");
2.13 frystyk 234: pres->hash = hash;
2.1 frystyk 235: StrAllocCopy(pres->hostname, host);
2.15 eric 236: pres->u_port = u_port;
2.1 frystyk 237: pres->ntime = time(NULL);
2.8 frystyk 238: pres->mode = HT_TP_SINGLE;
2.26 frystyk 239: pres->delay = WriteDelay;
2.18 eric 240: {
2.26 frystyk 241: int i;
242: for (i = 0; i < HTEvent_TYPES; i++)
243: pres->events[i]= HTEvent_new(HostEvent, pres, HT_PRIORITY_MAX, EventTimeout);
2.18 eric 244: }
2.2 frystyk 245: if (CORE_TRACE)
2.24 frystyk 246: HTTrace("Host info... added `%s\' with host %p to list %p\n",
247: host, pres, list);
2.1 frystyk 248: HTList_addObject(list, (void *) pres);
249: }
250: return pres;
2.9 frystyk 251: }
252:
2.15 eric 253: PUBLIC HTHost * HTHost_newWParse (HTRequest * request, char * url, u_short u_port)
2.13 frystyk 254: {
255: char * port;
256: char * fullhost = NULL;
257: char * parsedHost = NULL;
258: SockA * sin;
259: HTHost * me;
260: char * proxy = HTRequest_proxy(request);
261:
262: fullhost = HTParse(proxy ? proxy : url, "", PARSE_HOST);
263:
264: /* If there's an @ then use the stuff after it as a hostname */
265: if (fullhost) {
266: char * at_sign;
267: if ((at_sign = strchr(fullhost, '@')) != NULL)
268: parsedHost = at_sign+1;
269: else
270: parsedHost = fullhost;
271: }
272: if (!parsedHost || !*parsedHost) {
273: HTRequest_addError(request, ERR_FATAL, NO, HTERR_NO_HOST,
274: NULL, 0, "HTDoConnect");
275: HT_FREE(fullhost);
276: return NULL;
277: }
278: port = strchr(parsedHost, ':');
279: if (PROT_TRACE)
280: HTTrace("HTDoConnect. Looking up `%s\'\n", parsedHost);
281: if (port) {
282: *port++ = '\0';
283: if (!*port || !isdigit(*port))
284: port = 0;
2.24 frystyk 285: u_port = (u_short) atol(port);
2.13 frystyk 286: }
287: /* Find information about this host */
2.15 eric 288: if ((me = HTHost_new(parsedHost, u_port)) == NULL) {
2.13 frystyk 289: if (PROT_TRACE)HTTrace("HTDoConnect. Can't get host info\n");
290: me->tcpstate = TCP_ERROR;
291: return NULL;
292: }
293: sin = &me->sock_addr;
294: memset((void *) sin, '\0', sizeof(SockA));
295: #ifdef DECNET
296: sin->sdn_family = AF_DECnet;
297: net->sock_addr.sdn_objnum = port ? (unsigned char)(strtol(port, (char **) 0, 10)) : DNP_OBJ;
298: #else /* Internet */
299: sin->sin_family = AF_INET;
2.15 eric 300: sin->sin_port = htons(u_port);
2.13 frystyk 301: #endif
302: HT_FREE(fullhost); /* parsedHost points into fullhost */
303: return me;
304: }
305:
2.9 frystyk 306: /*
307: ** Search the host info cache for a host object. Examples of host names:
308: **
309: ** www.w3.org
310: ** www.foo.com:8000
311: ** 18.52.0.18
312: **
313: ** Returns Host object or NULL if not found.
314: */
315: PUBLIC HTHost * HTHost_find (char * host)
316: {
317: HTList * list = NULL; /* Current list in cache */
318: HTHost * pres = NULL;
319: if (CORE_TRACE)
320: HTTrace("Host info... Looking for `%s\'\n", host ? host : "<null>");
321:
322: /* Find a hash for this host */
323: if (host && HostTable) {
324: int hash = 0;
325: char *ptr;
326: for (ptr=host; *ptr; ptr++)
2.13 frystyk 327: hash = (int) ((hash * 3 + (*(unsigned char *) ptr)) % HOST_HASH_SIZE);
2.9 frystyk 328: if (!HostTable[hash]) return NULL;
329: list = HostTable[hash];
330:
331: /* Search the cache */
332: {
333: HTList * cur = list;
334: while ((pres = (HTHost *) HTList_nextObject(cur))) {
335: if (!strcmp(pres->hostname, host)) {
336: if (time(NULL) > pres->ntime + HostTimeout) {
337: if (CORE_TRACE)
338: HTTrace("Host info... Collecting host %p\n", pres);
339: delete_object(list, pres);
340: pres = NULL;
341: } else {
342: if (CORE_TRACE)
343: HTTrace("Host info... Found `%s\'\n", host);
344: }
345: return pres;
346: }
347: }
348: }
349: }
350: return NULL;
2.1 frystyk 351: }
352:
353: /*
2.8 frystyk 354: ** Get and set the hostname of the remote host
355: */
356: PUBLIC char * HTHost_name (HTHost * host)
357: {
358: return host ? host->hostname : NULL;
359: }
360:
361: /*
2.1 frystyk 362: ** Get and set the type class of the remote host
363: */
364: PUBLIC char * HTHost_class (HTHost * host)
365: {
366: return host ? host->type : NULL;
367: }
368:
369: PUBLIC void HTHost_setClass (HTHost * host, char * s_class)
370: {
371: if (host && s_class) StrAllocCopy(host->type, s_class);
372: }
373:
374: /*
375: ** Get and set the version of the remote host
376: */
377: PUBLIC int HTHost_version (HTHost *host)
378: {
379: return host ? host->version : 0;
380: }
381:
382: PUBLIC void HTHost_setVersion (HTHost * host, int version)
383: {
384: if (host) host->version = version;
385: }
386:
387: /*
388: ** Get and set the cache timeout for persistent entries.
389: ** The default value is TCP_TIMEOUT
390: */
391: PUBLIC void HTHost_setPersistTimeout (time_t timeout)
392: {
393: TCPTimeout = timeout;
394: }
395:
396: PUBLIC time_t HTHost_persistTimeout (time_t timeout)
397: {
398: return TCPTimeout;
399: }
400:
401: /* Persistent Connection Expiration
402: ** --------------------------------
403: ** Should normally not be used. If, then use calendar time.
404: */
405: PUBLIC void HTHost_setPersistExpires (HTHost * host, time_t expires)
406: {
407: if (host) host->expires = expires;
408: }
409:
410: PUBLIC time_t HTHost_persistExpires (HTHost * host)
411: {
412: return host ? host->expires : -1;
413: }
414:
2.22 eric 415: PUBLIC void HTHost_setReqsPerConnection (HTHost * host, int reqs)
416: {
417: if (host) host->reqsPerConnection = reqs;
418: }
419:
420: PUBLIC int HTHost_reqsPerConnection (HTHost * host)
421: {
422: return host ? host->reqsPerConnection : -1;
423: }
424:
425: PUBLIC void HTHost_setReqsMade (HTHost * host, int reqs)
426: {
427: if (host) host->reqsMade = reqs;
428: }
429:
430: PUBLIC int HTHost_reqsMade (HTHost * host)
431: {
432: return host ? host->reqsMade : -1;
433: }
434:
435:
2.1 frystyk 436: /*
2.6 frystyk 437: ** Public methods for this host
438: */
439: PUBLIC HTMethod HTHost_publicMethods (HTHost * me)
440: {
441: return me ? me->methods : METHOD_INVALID;
442: }
443:
444: PUBLIC void HTHost_setPublicMethods (HTHost * me, HTMethod methodset)
445: {
446: if (me) me->methods = methodset;
447: }
448:
449: PUBLIC void HTHost_appendPublicMethods (HTHost * me, HTMethod methodset)
450: {
451: if (me) me->methods |= methodset;
452: }
453:
454: /*
455: ** Get and set the server name of the remote host
456: */
457: PUBLIC char * HTHost_server (HTHost * host)
458: {
459: return host ? host->server : NULL;
460: }
461:
462: PUBLIC BOOL HTHost_setServer (HTHost * host, const char * server)
463: {
464: if (host && server) {
465: StrAllocCopy(host->server, server);
466: return YES;
467: }
468: return NO;
469: }
470:
471: /*
472: ** Get and set the userAgent name of the remote host
473: */
474: PUBLIC char * HTHost_userAgent (HTHost * host)
475: {
476: return host ? host->user_agent : NULL;
477: }
478:
479: PUBLIC BOOL HTHost_setUserAgent (HTHost * host, const char * userAgent)
480: {
481: if (host && userAgent) {
482: StrAllocCopy(host->user_agent, userAgent);
483: return YES;
2.12 frystyk 484: }
485: return NO;
486: }
487:
488: /*
489: ** Get and set acceptable range units
490: */
491: PUBLIC char * HTHost_rangeUnits (HTHost * host)
492: {
493: return host ? host->range_units : NULL;
494: }
495:
496: PUBLIC BOOL HTHost_setRangeUnits (HTHost * host, const char * units)
497: {
498: if (host && units) {
499: StrAllocCopy(host->range_units, units);
500: return YES;
501: }
502: return NO;
503: }
504:
505: /*
506: ** Checks whether a specific range unit is OK. We always say
507: ** YES except if we have a specific statement from the server that
508: ** it doesn't understand byte ranges - that is - it has sent "none"
509: ** in a "Accept-Range" response header
510: */
511: PUBLIC BOOL HTHost_isRangeUnitAcceptable (HTHost * host, const char * unit)
512: {
513: if (host && unit) {
514: #if 0
515: if (host->range_units) {
516: char * start = strcasestr(host->range_units, "none");
517:
518: /*
519: ** Check that "none" is infact a token. It could be part of some
520: ** other valid string, so we'd better check for it.
521: */
522: if (start) {
523:
524:
525: }
526: return NO;
527: }
528: #endif
529: return strcasecomp(unit, "bytes") ? NO : YES;
2.6 frystyk 530: }
531: return NO;
532: }
533:
2.1 frystyk 534: /* HTHost_catchClose
535: ** -----------------
536: ** This function is registered when the socket is idle so that we get
537: ** a notification if the socket closes at the other end. At this point
538: ** we can't use the request object as it might have been freed a long
539: ** time ago.
540: */
2.13 frystyk 541: PUBLIC int HTHost_catchClose (SOCKET soc, void * context, HTEventType type)
2.1 frystyk 542: {
2.13 frystyk 543: HTNet * net = (HTNet *)context;
544: HTHost * host = net->host;
2.2 frystyk 545: if (CORE_TRACE)
2.13 frystyk 546: HTTrace("Catch Close. called with socket %d with type %x\n",
547: soc, type);
548: if (type == HTEvent_READ) {
2.1 frystyk 549: HTChannel * ch = HTChannel_find(soc); /* Find associated channel */
2.8 frystyk 550: HTHost * host = HTChannel_host(ch); /* and associated host */
2.1 frystyk 551: if (ch && host) {
2.2 frystyk 552: if (CORE_TRACE) HTTrace("Catch Close. CLOSING socket %d\n", soc);
2.8 frystyk 553: HTHost_clearChannel(host, HT_OK);
2.1 frystyk 554: } else {
2.2 frystyk 555: if (CORE_TRACE) HTTrace("Catch Close. socket %d NOT FOUND!\n",soc);
2.1 frystyk 556: }
557: }
2.13 frystyk 558: HTHost_unregister(host, net, HTEvent_CLOSE);
2.1 frystyk 559: return HT_OK;
560: }
561:
562: /*
563: ** As soon as we know that this host accepts persistent connections,
564: ** we associated the channel with the host.
565: ** We don't want more than MaxSockets-2 connections to be persistent in
566: ** order to avoid deadlock.
567: */
2.13 frystyk 568: PUBLIC BOOL HTHost_setPersistent (HTHost * host,
569: BOOL persistent,
570: HTTransportMode mode)
2.1 frystyk 571: {
2.13 frystyk 572: if (!host) return NO;
573:
574: if (!persistent) {
575: /*
576: ** We use the HT_IGNORE status code as we don't want to free
577: ** the stream at this point in time. The situation we want to
578: ** avoid is that we free the channel from within the stream pipe.
579: ** This will lead to an infinite look having the stream freing
580: ** itself.
581: */
582: return HTHost_clearChannel(host, HT_IGNORE);
583: }
584:
2.18 eric 585: /*
586: ** Set the host persistent if not already. Also update the mode to
587: ** the new one - it may have changed
588: */
589: HTHost_setMode(host, mode);
590: if (!host->persistent) {
2.13 frystyk 591: SOCKET sockfd = HTChannel_socket(host->channel);
2.8 frystyk 592: if (sockfd != INVSOC && HTNet_availablePersistentSockets() > 0) {
2.13 frystyk 593: host->persistent = YES;
2.1 frystyk 594: host->expires = time(NULL) + TCPTimeout; /* Default timeout */
2.13 frystyk 595: HTChannel_setHost(host->channel, host);
2.8 frystyk 596: HTNet_increasePersistentSocket();
2.2 frystyk 597: if (CORE_TRACE)
2.1 frystyk 598: HTTrace("Host info... added host %p as persistent\n", host);
599: return YES;
600: } else {
2.2 frystyk 601: if (CORE_TRACE)
602: HTTrace("Host info... no room for persistent socket %d\n",
2.7 frystyk 603: sockfd);
2.18 eric 604: return NO;
2.1 frystyk 605: }
2.18 eric 606: } else {
607: if (CORE_TRACE) HTTrace("Host info... %p already persistent\n", host);
608: return YES;
2.1 frystyk 609: }
610: return NO;
611: }
612:
613: /*
2.13 frystyk 614: ** Check whether we have a persistent channel or not
615: */
616: PUBLIC BOOL HTHost_isPersistent (HTHost * host)
617: {
618: return host && host->persistent;
619: }
620:
621: /*
2.1 frystyk 622: ** Find persistent channel associated with this host.
623: */
624: PUBLIC HTChannel * HTHost_channel (HTHost * host)
625: {
626: return host ? host->channel : NULL;
627: }
628:
629: /*
630: ** Clear the persistent entry by deleting the channel object. Note that
631: ** the channel object is only deleted if it's not used anymore.
632: */
2.8 frystyk 633: PUBLIC BOOL HTHost_clearChannel (HTHost * host, int status)
2.1 frystyk 634: {
635: if (host && host->channel) {
2.8 frystyk 636: HTChannel_setHost(host->channel, NULL);
2.10 frystyk 637:
2.13 frystyk 638: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
639: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
2.18 eric 640: host->registeredFor = 0;
2.13 frystyk 641:
2.10 frystyk 642: /*
643: ** We don't want to recursively delete ourselves so if we are
644: ** called from within the stream pipe then don't delete the channel
645: ** at this point
646: */
2.8 frystyk 647: HTChannel_delete(host->channel, status);
2.18 eric 648: host->expires = 0;
2.1 frystyk 649: host->channel = NULL;
2.22 eric 650: host->tcpstate = TCP_BEGIN;
651: host->reqsMade = 0;
2.8 frystyk 652: HTNet_decreasePersistentSocket();
2.2 frystyk 653: if (CORE_TRACE)
654: HTTrace("Host info... removed host %p as persistent\n", host);
2.1 frystyk 655: return YES;
656: }
657: return NO;
658: }
659:
660: /*
2.18 eric 661: ** Move all entries in the pipeline and move the rest to the pending
662: ** queue. They will get launched at a later point in time.
663: */
664: PUBLIC BOOL HTHost_recoverPipe (HTHost * host)
665: {
666: if (host) {
667: int piped = HTList_count(host->pipeline);
668: if (piped > 0) {
669: int cnt;
2.24 frystyk 670: host->recovered++;
2.18 eric 671: if (CORE_TRACE)
2.24 frystyk 672: HTTrace("Host recovered %d times. Moving %d Net objects from pipe line to pending queue\n",
673: host->recovered, piped);
2.18 eric 674:
675: /*
676: ** Unregister this host for all events
677: */
678: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
679: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
680: host->registeredFor = 0;
681:
682: /*
683: ** Set new mode to single until we know what is going on
684: */
685: host->mode = HT_TP_SINGLE;
686:
687: /*
688: ** Move all net objects from the net object to the pending queue.
689: */
690: if (!host->pending) host->pending = HTList_new();
691: for (cnt=0; cnt<piped; cnt++) {
692: HTNet * net = HTList_removeLastObject(host->pipeline);
693: if (CORE_TRACE) HTTrace("Host recover Resetting net object %p\n", net);
694: net->registeredFor = 0;
695: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, HTEvent_RESET);
696: HTList_appendObject(host->pending, net);
697: }
698: HTChannel_setSemaphore(host->channel, 0);
699: HTHost_clearChannel(host, HT_INTERRUPTED);
700: }
2.24 frystyk 701: #if 0
702: /*
703: ** We don't wanna change state here
704: */
2.18 eric 705: return HTHost_launchPending(host);
2.24 frystyk 706: #else
707: return YES;
708: #endif
2.18 eric 709: }
710: return NO;
711: }
712:
713: /*
2.8 frystyk 714: ** Handle the connection mode. The mode may change mode in the
715: ** middle of a connection.
716: */
717: PUBLIC HTTransportMode HTHost_mode (HTHost * host, BOOL * active)
718: {
719: return host ? host->mode : HT_TP_SINGLE;
720: }
721:
722: /*
723: ** If the new mode is lower than the old mode then adjust the pipeline
724: ** accordingly. That is, if we are going into single mode then move
725: ** all entries in the pipeline and move the rest to the pending
726: ** queue. They will get launched at a later point in time.
727: */
728: PUBLIC BOOL HTHost_setMode (HTHost * host, HTTransportMode mode)
729: {
730: if (host) {
731: /*
732: ** Check the new mode and see if we must adjust the queues.
733: */
734: if (mode == HT_TP_SINGLE && host->mode > mode) {
735: int piped = HTList_count(host->pipeline);
736: if (piped > 0) {
737: int cnt;
738: if (CORE_TRACE)
739: HTTrace("Host info... Moving %d Net objects from pipe line to pending queue\n", piped);
740: if (!host->pending) host->pending = HTList_new();
741: for (cnt=0; cnt<piped; cnt++) {
2.18 eric 742: HTNet * net = HTList_removeLastObject(host->pipeline);
743: if (CORE_TRACE) HTTrace("Host info... Resetting net object %p\n", net);
2.13 frystyk 744: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, HTEvent_RESET);
2.8 frystyk 745: HTList_appendObject(host->pending, net);
746: }
2.18 eric 747: HTChannel_setSemaphore(host->channel, 0);
748: HTHost_clearChannel(host, HT_INTERRUPTED);
2.8 frystyk 749: }
2.24 frystyk 750: }
751:
752: /*
753: ** If we know that this host is bad then we don't allow anything than
754: ** single mode. We can't recover connections for the rest of our life
755: */
756: if (mode == HT_TP_PIPELINE && host->recovered > MAX_HOST_RECOVER) {
757: if (PROT_TRACE)
758: HTTrace("Host info... %p is bad for pipelining so we won't do it!!!\n",
759: host);
760: } else {
761: host->mode = mode;
762: if (PROT_TRACE)
763: HTTrace("Host info... New mode is %d for host %p\n", host->mode, host);
764: }
2.8 frystyk 765: }
766: return NO;
767: }
768:
769: /*
770: ** Check whether a host is idle meaning if it is ready for a new
771: ** request which depends on the mode of the host. If the host is
772: ** idle, i.e. ready for use then return YES else NO. If the host supports
773: ** persistent connections then still only return idle if no requests are
774: ** ongoing.
775: */
776: PUBLIC BOOL HTHost_isIdle (HTHost * host)
777: {
778: return (host && HTList_count(host->pipeline) <= 0);
779: }
780:
2.13 frystyk 781: PRIVATE BOOL _roomInPipe (HTHost * host)
782: {
783: int count;
784: if (!host) return NO;
2.22 eric 785: if (host->reqsPerConnection && host->reqsMade >= host->reqsPerConnection)
786: return 0;
2.13 frystyk 787: count = HTList_count(host->pipeline);
788: switch (host->mode) {
789: case HT_TP_SINGLE:
790: return count <= 0;
791: case HT_TP_PIPELINE:
792: return count < MAX_PIPES;
793: case HT_TP_INTERLEAVE:
794: return YES;
795: }
796: return NO;
797: }
798:
2.8 frystyk 799: /*
800: ** Add a net object to the host object. If the host
801: ** is idle then add to active list (pipeline) else add
802: ** it to the pending list
803: ** Return HT_PENDING if we must pend, HT_OK, or HT_ERROR
804: */
805: PUBLIC int HTHost_addNet (HTHost * host, HTNet * net)
806: {
807: if (host && net) {
808: int status = HT_OK;
809:
2.18 eric 810: /*
811: ** If we don't have a socket already then check to see if we can get
812: ** one. Otherwise we put the host object into our pending queue.
813: */
814: if (!host->channel && HTNet_availableSockets() <= 0) {
2.8 frystyk 815: if (!PendHost) PendHost = HTList_new();
816: if (CORE_TRACE)
817: HTTrace("Host info... Add Host %p as pending\n", host);
818: HTList_addObject(PendHost, host);
819: status = HT_PENDING;
820: }
821:
2.18 eric 822: /*
823: ** Add net object to either active or pending queue.
824: */
2.13 frystyk 825: if (_roomInPipe(host)) {
2.8 frystyk 826: if (CORE_TRACE) HTTrace("Host info... Add Net %p to pipeline of host %p\n", net, host);
827: if (!host->pipeline) host->pipeline = HTList_new();
828: HTList_addObject(host->pipeline, net);
2.18 eric 829:
2.13 frystyk 830: /*
831: ** Send out the request if we're not blocked on write
832: */
2.23 eric 833: #if 0
2.13 frystyk 834: if (!(host->registeredFor & HTEvent_BITS(HTEvent_WRITE)))
835: status = HTHost_launchPending(host) == YES ? HT_OK : HT_ERROR;
2.23 eric 836: #endif
2.8 frystyk 837: } else {
838: if (CORE_TRACE) HTTrace("Host info... Add Net %p as pending\n", net);
839: if (!host->pending) host->pending = HTList_new();
840: HTList_addObject(host->pending, net);
841: status = HT_PENDING;
842: }
843: return status;
844: }
845: return HT_ERROR;
846: }
847:
2.13 frystyk 848: PUBLIC BOOL HTHost_free (HTHost * host, int status)
849: {
850: if (host->channel == NULL) return NO;
2.25 frystyk 851: #if 0
2.23 eric 852: if (host->persistent && !(host->reqsMade >= host->reqsPerConnection && HTList_count(host->pipeline) <= 1))
2.25 frystyk 853: #else
854: /* Check this with FTP as well */
855: if (host->persistent &&
856: (!host->reqsPerConnection ||
857: (host->reqsPerConnection && host->reqsMade < host->reqsPerConnection)))
858: #endif
2.23 eric 859: {
2.13 frystyk 860: if (CORE_TRACE)
861: HTTrace("Host Object. keeping socket %d\n", HTChannel_socket(host->channel));
862: HTChannel_delete(host->channel, status);
863: } else {
864: if (CORE_TRACE)
865: HTTrace("Host Object. closing socket %d\n", HTChannel_socket(host->channel));
866:
867: /*
868: ** By lowering the semaphore we make sure that the channel
869: ** is gonna be deleted
870: */
2.23 eric 871: #if 1
872: HTChannel_downSemaphore(host->channel);
873: HTHost_clearChannel(host, status);
874: #else
2.13 frystyk 875: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
876: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
877: host->registeredFor = 0;
878: HTChannel_downSemaphore(host->channel);
879: HTChannel_delete(host->channel, status);
880: host->channel = NULL;
2.22 eric 881: host->tcpstate = TCP_BEGIN;
2.23 eric 882: #endif
2.13 frystyk 883: }
884: return YES;
885: }
886:
2.8 frystyk 887: PUBLIC BOOL HTHost_deleteNet (HTHost * host, HTNet * net)
888: {
889: if (host && net) {
890: if (CORE_TRACE)
891: HTTrace("Host info... Remove Net %p from pipe line\n", net);
892: HTList_removeObject(host->pipeline, net);
893: HTList_removeObject(host->pending, net);
894: return YES;
895: }
896: return NO;
897: }
898:
899: /*
900: ** Handle pending host objects.
901: ** There are two ways we can end up with pending reqyests:
902: ** 1) If we are out of sockets then register new host objects as pending.
903: ** 2) If we are pending on a connection then register new net objects as
904: ** pending
905: ** This set of functions handles pending host objects and can start new
906: ** requests as resources get available
907: */
908:
909: /*
910: ** Check this host object for any pending requests and return the next
911: ** registered Net object.
912: */
913: PUBLIC HTNet * HTHost_nextPendingNet (HTHost * host)
914: {
915: HTNet * net = NULL;
916: if (host && host->pending && host->pipeline) {
2.18 eric 917: /*JK 23/Sep/96 Bug correction. Associated the following lines to the
918: **above if. There was a missing pair of brackets.
919: */
920: if ((net = (HTNet *) HTList_removeFirstObject(host->pending)) != NULL) {
921: if (PROT_TRACE)
922: HTTrace("Host info... Popping %p from pending net queue\n", net);
2.22 eric 923: /* HTList_addObject(host->pipeline, net); */
2.18 eric 924: }
2.8 frystyk 925: }
926: return net;
927: }
928:
929: /*
2.13 frystyk 930: ** Return the current list of pending host objects waiting for a socket
2.8 frystyk 931: */
932: PUBLIC HTHost * HTHost_nextPendingHost (void)
933: {
934: HTHost * host = NULL;
935: if (PendHost) {
936: if ((host = (HTHost *) HTList_removeFirstObject(PendHost)) != NULL)
937: if (PROT_TRACE)
938: HTTrace("Host info... Poping %p from pending host queue\n",
939: host);
940: }
941: return host;
942: }
943:
944: /*
945: ** Start the next pending request if any. First we look for pending
946: ** requests for the same host and then we check for any other pending
947: ** hosts
948: */
949: PUBLIC BOOL HTHost_launchPending (HTHost * host)
950: {
951: int available = HTNet_availableSockets();
952:
953: if (!host) {
954: if (PROT_TRACE) HTTrace("Host info... Bad arguments\n");
955: return NO;
956: }
957:
958: /*
959: ** Check if we do have resources available for a new request
960: ** This can either be reusing an existing connection or opening a new one
961: */
962: if (available > 0 || host->mode >= HT_TP_PIPELINE) {
2.23 eric 963: HTNet * net;
2.8 frystyk 964:
965: /*
2.13 frystyk 966: ** In pipeline we can only have one doing writing at a time.
967: ** We therefore check that there are no other Net object
968: ** registered for write
969: */
970: if (host->mode == HT_TP_PIPELINE) {
2.23 eric 971: net = (HTNet *) HTList_lastObject(host->pipeline);
972: if (net && net->registeredFor == HTEvent_WRITE)
2.13 frystyk 973: return NO;
974: }
975:
976: /*
977: ** Check the current Host object for pending Net objects
2.23 eric 978: **
979: ** Send out as many as will fit in pipe.
2.8 frystyk 980: */
2.23 eric 981: while (_roomInPipe(host) && (net = HTHost_nextPendingNet(host))) {
982: int status = HTNet_execute(net, HTEvent_WRITE);
983: if (status != HT_OK)
984: return status;
2.8 frystyk 985: }
986:
987: /*
988: ** Check for other pending Host objects
989: */
990: {
991: HTHost * pending = HTHost_nextPendingHost();
992: if (pending) {
993: HTNet * net = HTHost_nextPendingNet(pending);
2.13 frystyk 994: if (net) return HTNet_execute(net, HTEvent_WRITE);
2.8 frystyk 995: }
996: }
2.13 frystyk 997: } else
998: if (PROT_TRACE) HTTrace("Host info... No more requests.\n");
999: return NO;
1000: }
1001:
1002: PUBLIC HTNet * HTHost_firstNet (HTHost * host)
1003: {
1004: return (HTNet *) HTList_firstObject(host->pipeline);
1005: }
1006:
1007: /*
1008: ** The host event manager keeps track of the state of it's client engines
1009: ** (typically HTTPEvent), accepting multiple blocks on read or write from
1010: ** multiple pipelined engines. It then registers its own engine
1011: ** (HostEvent) with the event manager.
1012: */
1013: PUBLIC int HTHost_connect (HTHost * host, HTNet * net, char * url, HTProtocolId port)
1014: {
1015: int status;
2.18 eric 1016: /* if (host && host->connecttime)
2.13 frystyk 1017: return HT_OK;
2.18 eric 1018: */
2.13 frystyk 1019: status = HTDoConnect(net, url, port);
2.22 eric 1020: if (status == HT_OK) {
1021: HTNet_host(net)->reqsMade++; /* @@@ - what if there's a connect but no req sent? */
2.13 frystyk 1022: return HT_OK;
2.22 eric 1023: }
2.13 frystyk 1024: if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1025: return HT_WOULD_BLOCK;
1026: return HT_ERROR; /* @@@ - some more deletion and stuff here? */
1027: }
1028:
1029: /*
1030: ** Rules: SINGLE: one element in pipe, either reading or writing
1031: ** PIPE: n element in pipe, n-1 reading, 1 writing
1032: */
1033: PUBLIC int HTHost_register (HTHost * host, HTNet * net, HTEventType type)
1034: {
1035: if (host && net) {
1036:
1037: /* net object may already be registered */
1038: if (HTEvent_BITS(type) & net->registeredFor)
1039: return NO;
1040: net->registeredFor ^= HTEvent_BITS(type);
1041:
1042: /* host object may already be registered */
1043: if (host->registeredFor & HTEvent_BITS(type))
1044: return YES;
1045: host->registeredFor ^= HTEvent_BITS(type);
1046: return HTEvent_register(HTChannel_socket(host->channel), type, *(host->events+HTEvent_INDEX(type)));
1047: }
1048: return NO;
1049: }
1050:
1051: PUBLIC int HTHost_unregister (HTHost * host, HTNet * net, HTEventType type)
1052: {
1053: if (host && net) {
1054:
1055: /* net object may no be registered */
1056: if (!(HTEvent_BITS(type) & net->registeredFor))
1057: return NO;
1058: net->registeredFor ^= HTEvent_BITS(type);
1059:
1060: /* host object may no be registered */
1061: if (!(host->registeredFor & HTEvent_BITS(type)))
1062: return YES;
1063: host->registeredFor ^= HTEvent_BITS(type);
1064:
1065: /* stay registered for READ to catch a socket close */
1066: /* WRITE and CONNECT can be unregistered, though */
1067: if ((type == HTEvent_WRITE && isLastInPipe(host, net)) ||
1068: type == HTEvent_CONNECT)
1069: /* if we are blocked downstream, shut down the whole pipe */
1070: HTEvent_unregister(HTChannel_socket(host->channel), type);
1071: return YES;
1072: }
1073: return NO;
1074: }
1075:
1076: /*
1077: ** The reader tells HostEvent that it's stream did not finish the data
1078: */
1079: PUBLIC BOOL HTHost_setRemainingRead (HTHost * host, size_t remaining)
1080: {
1081: if (host == NULL) return NO;
1082: host->remainingRead = remaining;
2.20 frystyk 1083: if (PROT_TRACE) HTTrace("Host........ %d bytes remaining \n", remaining);
2.13 frystyk 1084: return YES;
1085: }
1086:
1087: PUBLIC SockA * HTHost_getSockAddr (HTHost * host)
1088: {
1089: if (!host) return NULL;
1090: return &host->sock_addr;
1091: }
1092:
1093: PUBLIC BOOL HTHost_setHome (HTHost * host, int home)
1094: {
1095: if (!host) return NO;
1096: host->home = home;
1097: return YES;
1098: }
1099:
1100: PUBLIC int HTHost_home (HTHost * host)
1101: {
1102: if (!host) return 0;
1103: return host->home;
1104: }
1105:
2.27 ! frystyk 1106: PUBLIC BOOL HTHost_setRetry (HTHost * host, int retry)
! 1107: {
! 1108: if (!host) return NO;
! 1109: host->retry = retry;
! 1110: return YES;
! 1111: }
! 1112:
! 1113: PUBLIC BOOL HTHost_decreaseRetry (HTHost * host)
! 1114: {
! 1115: if (!host) {
! 1116: if (host->retry > 0) host->retry--;
! 1117: return YES;
! 1118: }
! 1119: return NO;
! 1120: }
! 1121:
! 1122: PUBLIC int HTHost_retry (HTHost * host)
! 1123: {
! 1124: if (!host) return 0;
! 1125: return host->retry;
! 1126: }
! 1127:
2.13 frystyk 1128: #if 0 /* Is a macro right now */
2.21 frystyk 1129: PRIVATE BOOL HTHost_setDNS5 (HTHost * host, HTdns * dns)
2.13 frystyk 1130: {
1131: if (!host) return NO;
1132: host->dns = dns;
1133: return YES;
1134: }
1135: #endif
1136:
1137: PUBLIC BOOL HTHost_setChannel (HTHost * host, HTChannel * channel)
1138: {
1139: if (!host) return NO;
1140: host->channel = channel;
1141: return YES;
1142: }
1143:
1144: PUBLIC HTNet * HTHost_getReadNet(HTHost * host)
1145: {
1146: if (host) {
1147: if (host->mode == HT_TP_INTERLEAVE) {
2.21 frystyk 1148: #ifdef HT_MUX
2.13 frystyk 1149: HTMuxChannel * muxch = HTMuxChannel_find(host);
1150: return HTMuxChannel_net(muxch);
2.21 frystyk 1151: #endif
2.13 frystyk 1152: }
1153: return (HTNet *) HTList_firstObject(host->pipeline);
1154: }
1155: return NULL;
1156: }
1157:
1158: PUBLIC HTNet * HTHost_getWriteNet(HTHost * host)
1159: {
1160: return host ? (HTNet *) HTList_lastObject(host->pipeline) : NULL;
1161: }
1162:
1163: /*
1164: ** Create the input stream and bind it to the channel
1165: ** Please read the description in the HTIOStream module for the parameters
1166: */
1167: PUBLIC HTInputStream * HTHost_getInput (HTHost * host, HTTransport * tp,
1168: void * param, int mode)
1169: {
1170: if (host && host->channel && tp) {
1171: HTChannel * ch = host->channel;
1172: HTInputStream * input = (*tp->input_new)(host, ch, param, mode);
1173: HTChannel_setInput(ch, input);
1174: return HTChannel_getChannelIStream(ch);
1175: }
2.24 frystyk 1176: if (CORE_TRACE) HTTrace("Host Object. Can't create input stream\n");
2.13 frystyk 1177: return NULL;
1178: }
1179:
1180: PUBLIC HTOutputStream * HTHost_getOutput (HTHost * host, HTTransport * tp,
1181: void * param, int mode)
1182: {
1183: if (host && host->channel && tp) {
1184: HTChannel * ch = host->channel;
1185: HTOutputStream * output = (*tp->output_new)(host, ch, param, mode);
1186: HTChannel_setOutput(ch, output);
1187: return output;
1188: }
2.24 frystyk 1189: if (CORE_TRACE) HTTrace("Host Object. Can't create output stream\n");
2.13 frystyk 1190: return NULL;
1191: }
1192:
1193: PUBLIC HTOutputStream * HTHost_output (HTHost * host, HTNet * net)
1194: {
1195: if (host && host->channel && net) {
1196: HTOutputStream * output = HTChannel_output(host->channel);
2.8 frystyk 1197:
1198: /*
2.13 frystyk 1199: ** If we are in MUX mode then create new output stream on top
1200: ** of the already existing one. Otherwise just return what we
1201: ** have.
2.8 frystyk 1202: */
2.13 frystyk 1203: if (host->mode == HT_TP_INTERLEAVE) {
2.21 frystyk 1204: #ifdef HT_MUX
2.13 frystyk 1205: HTStream * target = (HTStream *) HTChannel_output(host->channel);
1206: output = HTMuxWriter_new(host, net, target);
2.21 frystyk 1207: #endif
2.8 frystyk 1208: }
2.13 frystyk 1209: return output;
1210: }
1211: return NULL;
1212: }
1213:
1214: PUBLIC int HTHost_read(HTHost * host, HTNet * net)
1215: {
1216: HTInputStream * input = HTChannel_input(host->channel);
1217: if (net != HTHost_getReadNet(host)) {
1218: HTHost_register(host, net, HTEvent_READ);
1219: return HT_WOULD_BLOCK;
1220: }
2.17 frystyk 1221:
1222: /*
1223: ** If there is no input channel then this can either mean that
1224: ** we have lost the channel or an error occurred. We return
1225: ** HT_CLOSED as this is a sign to the caller that we don't
1226: ** have a channel
1227: */
1228: return input ? (*input->isa->read)(input) : HT_CLOSED;
2.13 frystyk 1229: }
1230:
1231: PUBLIC BOOL HTHost_setConsumed(HTHost * host, size_t bytes)
1232: {
1233: HTInputStream * input;
1234: if (!host || !host->channel) return NO;
1235: if ((input = HTChannel_input(host->channel)) == NULL)
1236: return NO;
2.20 frystyk 1237: if (PROT_TRACE)
1238: HTTrace("Host........ passing %d bytes as consumed to %p\n", bytes, input);
2.13 frystyk 1239: return (*input->isa->consumed)(input, bytes);
1240: }
1241:
1242: PUBLIC int HTHost_hash (HTHost * host)
1243: {
1244: return host ? host->hash : -1;
1245: }
1246:
2.26 frystyk 1247: PUBLIC BOOL HTHost_setWriteDelay (HTHost * host, ms_t delay)
2.13 frystyk 1248: {
2.26 frystyk 1249: if (host && delay >= 0) {
1250: host->delay = delay;
1251: return YES;
1252: }
1253: return NO;
1254: }
1255:
1256: PUBLIC ms_t HTHost_writeDelay (HTHost * host)
1257: {
1258: return host ? host->delay : 0;
1259: }
1260:
1261: PUBLIC int HTHost_findWriteDelay (HTHost * host, ms_t lastFlushTime, int buffSize)
1262: {
2.15 eric 1263: unsigned short mtu;
2.18 eric 1264: int ret = -1;
2.15 eric 1265: int socket = HTChannel_socket(host->channel);
2.18 eric 1266: #ifndef WWW_MSWINDOWS
2.15 eric 1267: ret = ioctl(socket, 666, (unsigned long)&mtu);
2.18 eric 1268: #endif /* WWW_MSWINDOWS */
2.15 eric 1269: if ((ret == 0 && buffSize >= mtu) || host->forceWriteFlush)
2.13 frystyk 1270: return 0;
2.26 frystyk 1271: return host->delay;
2.13 frystyk 1272: }
1273:
2.26 frystyk 1274: PUBLIC BOOL HTHost_setDefaultWriteDelay (ms_t delay)
1275: {
1276: if (delay >= 0) {
1277: WriteDelay = delay;
1278: if (CORE_TRACE) HTTrace("Host........ Default write delay is %d ms\n", delay);
1279: return YES;
1280: }
1281: return NO;
1282: }
1283:
1284: PUBLIC ms_t HTHost_defaultWriteDelay (void)
1285: {
1286: return WriteDelay;
1287: }
1288:
2.13 frystyk 1289: PUBLIC int HTHost_forceFlush(HTHost * host)
1290: {
1291: HTNet * targetNet = (HTNet *)HTList_lastObject(host->pipeline);
1292: int wasForced = host->forceWriteFlush;
1293: int ret;
1294: if (targetNet == NULL)
1295: return HT_ERROR;
1296: if (CORE_TRACE)
2.14 frystyk 1297: HTTrace(HTHIDE("Host Event.. FLUSH passed to %s.\n"),
2.13 frystyk 1298: HTHIDE(HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet)))));
1299: host->forceWriteFlush = YES;
1300: ret = (*targetNet->event.cbf)(HTChannel_socket(host->channel), targetNet->event.param, HTEvent_FLUSH);
1301: host->forceWriteFlush = wasForced;
1302: return ret;
2.1 frystyk 1303: }
2.11 kahan 1304:
2.13 frystyk 1305: PUBLIC int HTHost_eventTimeout (void)
1306: {
1307: return EventTimeout;
1308: }
2.11 kahan 1309:
2.13 frystyk 1310: PUBLIC void HTHost_setEventTimeout (int millis)
1311: {
1312: EventTimeout = millis;
1313: if (CORE_TRACE) HTTrace("Host........ Setting event timeout to %d ms\n", millis);
1314: }
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