Annotation of libwww/Library/src/HTHost.c, revision 2.26
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.
2.26 ! frystyk 6: ** @(#) $Id: HTHost.c,v 2.25 1997/01/29 16:54:51 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 "HTDNS.h"
24: #include "HTTPUtil.h"
25: #include "HTTCP.h"
2.1 frystyk 26: #include "HTHost.h" /* Implemented here */
2.13 frystyk 27: #include "HTHstMan.h"
2.1 frystyk 28:
29: #define HOST_TIMEOUT 43200L /* Default host timeout is 12 h */
30: #define TCP_TIMEOUT 3600L /* Default TCP timeout i 1 h */
2.19 frystyk 31: #define MAX_PIPES 50 /* maximum number of pipelined requests */
2.24 frystyk 32: #define MAX_HOST_RECOVER 3 /* Max number of auto recovery */
2.26 ! frystyk 33: #define DEFAULT_DELAY 200 /* Default write flush delay in ms */
2.1 frystyk 34:
2.13 frystyk 35: struct _HTInputStream {
36: const HTInputStreamClass * isa;
2.1 frystyk 37: };
38:
2.13 frystyk 39: PRIVATE int HostEvent(SOCKET soc, void * pVoid, HTEventType type);
40:
41: /* Type definitions and global variables etc. local to this module */
2.1 frystyk 42: PRIVATE time_t HostTimeout = HOST_TIMEOUT; /* Timeout on host entries */
43: PRIVATE time_t TCPTimeout = TCP_TIMEOUT; /* Timeout on persistent channels */
44:
2.8 frystyk 45: PRIVATE HTList ** HostTable = NULL;
46: PRIVATE HTList * PendHost = NULL; /* List of pending host elements */
2.1 frystyk 47:
2.13 frystyk 48: PRIVATE int EventTimeout = -1; /* Global Host event timeout */
49:
2.26 ! frystyk 50: PRIVATE WriteDelay = DEFAULT_DELAY; /* Delay in ms */
! 51:
2.1 frystyk 52: /* ------------------------------------------------------------------------- */
53:
54: PRIVATE void free_object (HTHost * me)
55: {
56: if (me) {
57: HT_FREE(me->hostname);
58: HT_FREE(me->type);
2.12 frystyk 59: HT_FREE(me->server);
60: HT_FREE(me->user_agent);
61: HT_FREE(me->range_units);
2.3 eric 62: if (me->channel) {
2.5 eric 63: HTChannel_delete(me->channel, HT_OK);
2.3 eric 64: me->channel = NULL;
65: }
2.18 eric 66: {
67: int i;
68: for (i = 0; i < HTEvent_TYPES; i++)
69: HTEvent_delete(me->events[i]);
70: }
2.8 frystyk 71: HTList_delete(me->pipeline);
72: HTList_delete(me->pending);
2.1 frystyk 73: HT_FREE(me);
74: }
75: }
76:
77: PRIVATE BOOL delete_object (HTList * list, HTHost * me)
78: {
2.2 frystyk 79: if (CORE_TRACE) HTTrace("Host info... object %p from list %p\n", me, list);
2.1 frystyk 80: HTList_removeObject(list, (void *) me);
81: free_object(me);
82: return YES;
83: }
84:
2.13 frystyk 85: PRIVATE BOOL isLastInPipe (HTHost * host, HTNet * net)
86: {
87: return HTList_lastObject(host->pipeline) == net;
88: }
89:
90: /*
91: ** HostEvent - host event manager - recieves events from the event
92: ** manager and dispatches them to the client net objects by calling the
93: ** net object's cbf.
94: **
95: */
96: PRIVATE int HostEvent (SOCKET soc, void * pVoid, HTEventType type)
97: {
98: HTHost * host = (HTHost *)pVoid;
99:
2.18 eric 100: if (type == HTEvent_READ || type == HTEvent_CLOSE) {
2.13 frystyk 101: HTNet * targetNet;
102:
103: /* call the first net object */
104: do {
105: int ret;
106: targetNet = (HTNet *)HTList_firstObject(host->pipeline);
107: if (targetNet) {
108: if (CORE_TRACE)
2.14 frystyk 109: HTTrace(HTHIDE("Host Event.. READ passed to %s.\n"),
2.13 frystyk 110: HTHIDE(HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet)))));
111: if ((ret = (*targetNet->event.cbf)(HTChannel_socket(host->channel),
112: targetNet->event.param, type)) != HT_OK)
113: return ret;
114: }
115: if (targetNet == NULL && host->remainingRead > 0) {
116: HTTrace("HostEvent... Error: %d bytes left to read and nowhere to put them\n", host->remainingRead);
117: host->remainingRead = 0;
118: /*
119: ** Fall through to close the channel
120: */
121: }
122: /* call pipelined net object to eat all the data in the channel */
123: } while (host->remainingRead > 0);
124:
125: /* last target net should have set remainingRead to 0 */
126: if (targetNet)
127: return HT_OK;
128:
129: /* If there was notargetNet, it should be a close */
2.14 frystyk 130: HTTrace(HTHIDE("Host Event.. host %s closed connection.\n"),
2.13 frystyk 131: host->hostname);
132:
133: /* Is there garbage in the channel? Let's check: */
134: {
135: char buf[256];
136: int ret;
137: while ((ret = NETREAD(HTChannel_socket(host->channel), buf, sizeof(buf))) > 0)
2.22 eric 138: HTTrace(HTHIDE("Host Event.. Host %s had %d extraneous bytes.\n"), host->hostname, ret);
2.13 frystyk 139: }
140: HTHost_clearChannel(host, HT_OK);
141: return HT_OK; /* extra garbage does not constitute an application error */
142:
2.18 eric 143: } else if (type == HTEvent_WRITE || type == HTEvent_CONNECT) {
2.13 frystyk 144: HTNet * targetNet = (HTNet *)HTList_lastObject(host->pipeline);
145: if (targetNet) {
146: if (CORE_TRACE)
2.14 frystyk 147: HTTrace(HTHIDE("Host Event.. WRITE passed to %s.\n"),
2.13 frystyk 148: HTHIDE(HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet)))));
149: return (*targetNet->event.cbf)(HTChannel_socket(host->channel), targetNet->event.param, type);
150: }
2.14 frystyk 151: HTTrace(HTHIDE("Host Event.. Who wants to write to %s?\n"), host->hostname);
2.13 frystyk 152: return HT_ERROR;
2.14 frystyk 153: } else if (type == HTEvent_TIMEOUT) {
154:
155: if (CORE_TRACE)
156: HTTrace("Host Event.. WE SHOULD DELETE ALL REQUEST ON `%s\'?\n",
157: host->hostname);
2.13 frystyk 158:
2.14 frystyk 159: } else {
160: HTTrace(HTHIDE("Don't know how to handle OOB data from %s?\n"),
161: host->hostname);
162: }
2.13 frystyk 163: return HT_OK;
164: }
165:
2.1 frystyk 166: /*
167: ** Search the host info cache for a host object or create a new one
168: ** and add it. Examples of host names are
169: **
170: ** www.w3.org
171: ** www.foo.com:8000
172: ** 18.52.0.18
173: **
174: ** Returns Host object or NULL if error. You may get back an already
175: ** existing host object - you're not guaranteed a new one each time.
176: */
2.13 frystyk 177:
2.15 eric 178: PUBLIC HTHost * HTHost_new (char * host, u_short u_port)
2.1 frystyk 179: {
180: HTList * list = NULL; /* Current list in cache */
181: HTHost * pres = NULL;
2.13 frystyk 182: int hash = 0;
2.1 frystyk 183: if (!host) {
2.2 frystyk 184: if (CORE_TRACE) HTTrace("Host info... Bad argument\n");
2.1 frystyk 185: return NULL;
186: }
187:
188: /* Find a hash for this host */
189: {
190: char *ptr;
191: for (ptr=host; *ptr; ptr++)
2.13 frystyk 192: hash = (int) ((hash * 3 + (*(unsigned char *) ptr)) % HOST_HASH_SIZE);
2.1 frystyk 193: if (!HostTable) {
2.13 frystyk 194: if ((HostTable = (HTList **) HT_CALLOC(HOST_HASH_SIZE,
2.1 frystyk 195: sizeof(HTList *))) == NULL)
196: HT_OUTOFMEM("HTHost_find");
197: }
198: if (!HostTable[hash]) HostTable[hash] = HTList_new();
199: list = HostTable[hash];
200: }
201:
202: /* Search the cache */
203: {
204: HTList * cur = list;
205: while ((pres = (HTHost *) HTList_nextObject(cur))) {
2.15 eric 206: if (!strcmp(pres->hostname, host) && u_port == pres->u_port) {
2.8 frystyk 207: if (HTHost_isIdle(pres) && time(NULL)>pres->ntime+HostTimeout){
2.2 frystyk 208: if (CORE_TRACE)
2.1 frystyk 209: HTTrace("Host info... Collecting host info %p\n",pres);
210: delete_object(list, pres);
211: pres = NULL;
212: }
213: break;
214: }
215: }
216: }
217:
2.8 frystyk 218: /* If not found then create new Host object, else use existing one */
2.1 frystyk 219: if (pres) {
220: if (pres->channel) {
2.13 frystyk 221: if (pres->expires && pres->expires < time(NULL)) { /* Cached channel is cold */
2.2 frystyk 222: if (CORE_TRACE)
2.1 frystyk 223: HTTrace("Host info... Persistent channel %p gotten cold\n",
224: pres->channel);
2.5 eric 225: HTChannel_delete(pres->channel, HT_OK);
2.1 frystyk 226: pres->channel = NULL;
227: } else {
2.2 frystyk 228: if (CORE_TRACE)
2.1 frystyk 229: HTTrace("Host info... REUSING CHANNEL %p\n",pres->channel);
230: }
231: }
232: } else {
233: if ((pres = (HTHost *) HT_CALLOC(1, sizeof(HTHost))) == NULL)
234: HT_OUTOFMEM("HTHost_add");
2.13 frystyk 235: pres->hash = hash;
2.1 frystyk 236: StrAllocCopy(pres->hostname, host);
2.15 eric 237: pres->u_port = u_port;
2.1 frystyk 238: pres->ntime = time(NULL);
2.8 frystyk 239: pres->mode = HT_TP_SINGLE;
2.26 ! frystyk 240: pres->delay = WriteDelay;
2.18 eric 241: {
2.26 ! frystyk 242: int i;
! 243: for (i = 0; i < HTEvent_TYPES; i++)
! 244: pres->events[i]= HTEvent_new(HostEvent, pres, HT_PRIORITY_MAX, EventTimeout);
2.18 eric 245: }
2.2 frystyk 246: if (CORE_TRACE)
2.24 frystyk 247: HTTrace("Host info... added `%s\' with host %p to list %p\n",
248: host, pres, list);
2.1 frystyk 249: HTList_addObject(list, (void *) pres);
250: }
251: return pres;
2.9 frystyk 252: }
253:
2.15 eric 254: PUBLIC HTHost * HTHost_newWParse (HTRequest * request, char * url, u_short u_port)
2.13 frystyk 255: {
256: char * port;
257: char * fullhost = NULL;
258: char * parsedHost = NULL;
259: SockA * sin;
260: HTHost * me;
261: char * proxy = HTRequest_proxy(request);
262:
263: fullhost = HTParse(proxy ? proxy : url, "", PARSE_HOST);
264:
265: /* If there's an @ then use the stuff after it as a hostname */
266: if (fullhost) {
267: char * at_sign;
268: if ((at_sign = strchr(fullhost, '@')) != NULL)
269: parsedHost = at_sign+1;
270: else
271: parsedHost = fullhost;
272: }
273: if (!parsedHost || !*parsedHost) {
274: HTRequest_addError(request, ERR_FATAL, NO, HTERR_NO_HOST,
275: NULL, 0, "HTDoConnect");
276: HT_FREE(fullhost);
277: return NULL;
278: }
279: port = strchr(parsedHost, ':');
280: if (PROT_TRACE)
281: HTTrace("HTDoConnect. Looking up `%s\'\n", parsedHost);
282: if (port) {
283: *port++ = '\0';
284: if (!*port || !isdigit(*port))
285: port = 0;
2.24 frystyk 286: u_port = (u_short) atol(port);
2.13 frystyk 287: }
288: /* Find information about this host */
2.15 eric 289: if ((me = HTHost_new(parsedHost, u_port)) == NULL) {
2.13 frystyk 290: if (PROT_TRACE)HTTrace("HTDoConnect. Can't get host info\n");
291: me->tcpstate = TCP_ERROR;
292: return NULL;
293: }
294: sin = &me->sock_addr;
295: memset((void *) sin, '\0', sizeof(SockA));
296: #ifdef DECNET
297: sin->sdn_family = AF_DECnet;
298: net->sock_addr.sdn_objnum = port ? (unsigned char)(strtol(port, (char **) 0, 10)) : DNP_OBJ;
299: #else /* Internet */
300: sin->sin_family = AF_INET;
2.15 eric 301: sin->sin_port = htons(u_port);
2.13 frystyk 302: #endif
303: HT_FREE(fullhost); /* parsedHost points into fullhost */
304: return me;
305: }
306:
2.9 frystyk 307: /*
308: ** Search the host info cache for a host object. Examples of host names:
309: **
310: ** www.w3.org
311: ** www.foo.com:8000
312: ** 18.52.0.18
313: **
314: ** Returns Host object or NULL if not found.
315: */
316: PUBLIC HTHost * HTHost_find (char * host)
317: {
318: HTList * list = NULL; /* Current list in cache */
319: HTHost * pres = NULL;
320: if (CORE_TRACE)
321: HTTrace("Host info... Looking for `%s\'\n", host ? host : "<null>");
322:
323: /* Find a hash for this host */
324: if (host && HostTable) {
325: int hash = 0;
326: char *ptr;
327: for (ptr=host; *ptr; ptr++)
2.13 frystyk 328: hash = (int) ((hash * 3 + (*(unsigned char *) ptr)) % HOST_HASH_SIZE);
2.9 frystyk 329: if (!HostTable[hash]) return NULL;
330: list = HostTable[hash];
331:
332: /* Search the cache */
333: {
334: HTList * cur = list;
335: while ((pres = (HTHost *) HTList_nextObject(cur))) {
336: if (!strcmp(pres->hostname, host)) {
337: if (time(NULL) > pres->ntime + HostTimeout) {
338: if (CORE_TRACE)
339: HTTrace("Host info... Collecting host %p\n", pres);
340: delete_object(list, pres);
341: pres = NULL;
342: } else {
343: if (CORE_TRACE)
344: HTTrace("Host info... Found `%s\'\n", host);
345: }
346: return pres;
347: }
348: }
349: }
350: }
351: return NULL;
2.1 frystyk 352: }
353:
354: /*
2.8 frystyk 355: ** Get and set the hostname of the remote host
356: */
357: PUBLIC char * HTHost_name (HTHost * host)
358: {
359: return host ? host->hostname : NULL;
360: }
361:
362: /*
2.1 frystyk 363: ** Get and set the type class of the remote host
364: */
365: PUBLIC char * HTHost_class (HTHost * host)
366: {
367: return host ? host->type : NULL;
368: }
369:
370: PUBLIC void HTHost_setClass (HTHost * host, char * s_class)
371: {
372: if (host && s_class) StrAllocCopy(host->type, s_class);
373: }
374:
375: /*
376: ** Get and set the version of the remote host
377: */
378: PUBLIC int HTHost_version (HTHost *host)
379: {
380: return host ? host->version : 0;
381: }
382:
383: PUBLIC void HTHost_setVersion (HTHost * host, int version)
384: {
385: if (host) host->version = version;
386: }
387:
388: /*
389: ** Get and set the cache timeout for persistent entries.
390: ** The default value is TCP_TIMEOUT
391: */
392: PUBLIC void HTHost_setPersistTimeout (time_t timeout)
393: {
394: TCPTimeout = timeout;
395: }
396:
397: PUBLIC time_t HTHost_persistTimeout (time_t timeout)
398: {
399: return TCPTimeout;
400: }
401:
402: /* Persistent Connection Expiration
403: ** --------------------------------
404: ** Should normally not be used. If, then use calendar time.
405: */
406: PUBLIC void HTHost_setPersistExpires (HTHost * host, time_t expires)
407: {
408: if (host) host->expires = expires;
409: }
410:
411: PUBLIC time_t HTHost_persistExpires (HTHost * host)
412: {
413: return host ? host->expires : -1;
414: }
415:
2.22 eric 416: PUBLIC void HTHost_setReqsPerConnection (HTHost * host, int reqs)
417: {
418: if (host) host->reqsPerConnection = reqs;
419: }
420:
421: PUBLIC int HTHost_reqsPerConnection (HTHost * host)
422: {
423: return host ? host->reqsPerConnection : -1;
424: }
425:
426: PUBLIC void HTHost_setReqsMade (HTHost * host, int reqs)
427: {
428: if (host) host->reqsMade = reqs;
429: }
430:
431: PUBLIC int HTHost_reqsMade (HTHost * host)
432: {
433: return host ? host->reqsMade : -1;
434: }
435:
436:
2.1 frystyk 437: /*
2.6 frystyk 438: ** Public methods for this host
439: */
440: PUBLIC HTMethod HTHost_publicMethods (HTHost * me)
441: {
442: return me ? me->methods : METHOD_INVALID;
443: }
444:
445: PUBLIC void HTHost_setPublicMethods (HTHost * me, HTMethod methodset)
446: {
447: if (me) me->methods = methodset;
448: }
449:
450: PUBLIC void HTHost_appendPublicMethods (HTHost * me, HTMethod methodset)
451: {
452: if (me) me->methods |= methodset;
453: }
454:
455: /*
456: ** Get and set the server name of the remote host
457: */
458: PUBLIC char * HTHost_server (HTHost * host)
459: {
460: return host ? host->server : NULL;
461: }
462:
463: PUBLIC BOOL HTHost_setServer (HTHost * host, const char * server)
464: {
465: if (host && server) {
466: StrAllocCopy(host->server, server);
467: return YES;
468: }
469: return NO;
470: }
471:
472: /*
473: ** Get and set the userAgent name of the remote host
474: */
475: PUBLIC char * HTHost_userAgent (HTHost * host)
476: {
477: return host ? host->user_agent : NULL;
478: }
479:
480: PUBLIC BOOL HTHost_setUserAgent (HTHost * host, const char * userAgent)
481: {
482: if (host && userAgent) {
483: StrAllocCopy(host->user_agent, userAgent);
484: return YES;
2.12 frystyk 485: }
486: return NO;
487: }
488:
489: /*
490: ** Get and set acceptable range units
491: */
492: PUBLIC char * HTHost_rangeUnits (HTHost * host)
493: {
494: return host ? host->range_units : NULL;
495: }
496:
497: PUBLIC BOOL HTHost_setRangeUnits (HTHost * host, const char * units)
498: {
499: if (host && units) {
500: StrAllocCopy(host->range_units, units);
501: return YES;
502: }
503: return NO;
504: }
505:
506: /*
507: ** Checks whether a specific range unit is OK. We always say
508: ** YES except if we have a specific statement from the server that
509: ** it doesn't understand byte ranges - that is - it has sent "none"
510: ** in a "Accept-Range" response header
511: */
512: PUBLIC BOOL HTHost_isRangeUnitAcceptable (HTHost * host, const char * unit)
513: {
514: if (host && unit) {
515: #if 0
516: if (host->range_units) {
517: char * start = strcasestr(host->range_units, "none");
518:
519: /*
520: ** Check that "none" is infact a token. It could be part of some
521: ** other valid string, so we'd better check for it.
522: */
523: if (start) {
524:
525:
526: }
527: return NO;
528: }
529: #endif
530: return strcasecomp(unit, "bytes") ? NO : YES;
2.6 frystyk 531: }
532: return NO;
533: }
534:
2.1 frystyk 535: /* HTHost_catchClose
536: ** -----------------
537: ** This function is registered when the socket is idle so that we get
538: ** a notification if the socket closes at the other end. At this point
539: ** we can't use the request object as it might have been freed a long
540: ** time ago.
541: */
2.13 frystyk 542: PUBLIC int HTHost_catchClose (SOCKET soc, void * context, HTEventType type)
2.1 frystyk 543: {
2.13 frystyk 544: HTNet * net = (HTNet *)context;
545: HTHost * host = net->host;
2.2 frystyk 546: if (CORE_TRACE)
2.13 frystyk 547: HTTrace("Catch Close. called with socket %d with type %x\n",
548: soc, type);
549: if (type == HTEvent_READ) {
2.1 frystyk 550: HTChannel * ch = HTChannel_find(soc); /* Find associated channel */
2.8 frystyk 551: HTHost * host = HTChannel_host(ch); /* and associated host */
2.1 frystyk 552: if (ch && host) {
2.2 frystyk 553: if (CORE_TRACE) HTTrace("Catch Close. CLOSING socket %d\n", soc);
2.8 frystyk 554: HTHost_clearChannel(host, HT_OK);
2.1 frystyk 555: } else {
2.2 frystyk 556: if (CORE_TRACE) HTTrace("Catch Close. socket %d NOT FOUND!\n",soc);
2.1 frystyk 557: }
558: }
2.13 frystyk 559: HTHost_unregister(host, net, HTEvent_CLOSE);
2.1 frystyk 560: return HT_OK;
561: }
562:
563: /*
564: ** As soon as we know that this host accepts persistent connections,
565: ** we associated the channel with the host.
566: ** We don't want more than MaxSockets-2 connections to be persistent in
567: ** order to avoid deadlock.
568: */
2.13 frystyk 569: PUBLIC BOOL HTHost_setPersistent (HTHost * host,
570: BOOL persistent,
571: HTTransportMode mode)
2.1 frystyk 572: {
2.13 frystyk 573: if (!host) return NO;
574:
575: if (!persistent) {
576: /*
577: ** We use the HT_IGNORE status code as we don't want to free
578: ** the stream at this point in time. The situation we want to
579: ** avoid is that we free the channel from within the stream pipe.
580: ** This will lead to an infinite look having the stream freing
581: ** itself.
582: */
583: return HTHost_clearChannel(host, HT_IGNORE);
584: }
585:
2.18 eric 586: /*
587: ** Set the host persistent if not already. Also update the mode to
588: ** the new one - it may have changed
589: */
590: HTHost_setMode(host, mode);
591: if (!host->persistent) {
2.13 frystyk 592: SOCKET sockfd = HTChannel_socket(host->channel);
2.8 frystyk 593: if (sockfd != INVSOC && HTNet_availablePersistentSockets() > 0) {
2.13 frystyk 594: host->persistent = YES;
2.1 frystyk 595: host->expires = time(NULL) + TCPTimeout; /* Default timeout */
2.13 frystyk 596: HTChannel_setHost(host->channel, host);
2.8 frystyk 597: HTNet_increasePersistentSocket();
2.2 frystyk 598: if (CORE_TRACE)
2.1 frystyk 599: HTTrace("Host info... added host %p as persistent\n", host);
600: return YES;
601: } else {
2.2 frystyk 602: if (CORE_TRACE)
603: HTTrace("Host info... no room for persistent socket %d\n",
2.7 frystyk 604: sockfd);
2.18 eric 605: return NO;
2.1 frystyk 606: }
2.18 eric 607: } else {
608: if (CORE_TRACE) HTTrace("Host info... %p already persistent\n", host);
609: return YES;
2.1 frystyk 610: }
611: return NO;
612: }
613:
614: /*
2.13 frystyk 615: ** Check whether we have a persistent channel or not
616: */
617: PUBLIC BOOL HTHost_isPersistent (HTHost * host)
618: {
619: return host && host->persistent;
620: }
621:
622: /*
2.1 frystyk 623: ** Find persistent channel associated with this host.
624: */
625: PUBLIC HTChannel * HTHost_channel (HTHost * host)
626: {
627: return host ? host->channel : NULL;
628: }
629:
630: /*
631: ** Clear the persistent entry by deleting the channel object. Note that
632: ** the channel object is only deleted if it's not used anymore.
633: */
2.8 frystyk 634: PUBLIC BOOL HTHost_clearChannel (HTHost * host, int status)
2.1 frystyk 635: {
636: if (host && host->channel) {
2.8 frystyk 637: HTChannel_setHost(host->channel, NULL);
2.10 frystyk 638:
2.13 frystyk 639: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
640: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
2.18 eric 641: host->registeredFor = 0;
2.13 frystyk 642:
2.10 frystyk 643: /*
644: ** We don't want to recursively delete ourselves so if we are
645: ** called from within the stream pipe then don't delete the channel
646: ** at this point
647: */
2.8 frystyk 648: HTChannel_delete(host->channel, status);
2.18 eric 649: host->expires = 0;
2.1 frystyk 650: host->channel = NULL;
2.22 eric 651: host->tcpstate = TCP_BEGIN;
652: host->reqsMade = 0;
2.8 frystyk 653: HTNet_decreasePersistentSocket();
2.2 frystyk 654: if (CORE_TRACE)
655: HTTrace("Host info... removed host %p as persistent\n", host);
2.1 frystyk 656: return YES;
657: }
658: return NO;
659: }
660:
661: /*
2.18 eric 662: ** Move all entries in the pipeline and move the rest to the pending
663: ** queue. They will get launched at a later point in time.
664: */
665: PUBLIC BOOL HTHost_recoverPipe (HTHost * host)
666: {
667: if (host) {
668: int piped = HTList_count(host->pipeline);
669: if (piped > 0) {
670: int cnt;
2.24 frystyk 671: host->recovered++;
2.18 eric 672: if (CORE_TRACE)
2.24 frystyk 673: HTTrace("Host recovered %d times. Moving %d Net objects from pipe line to pending queue\n",
674: host->recovered, piped);
2.18 eric 675:
676: /*
677: ** Unregister this host for all events
678: */
679: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
680: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
681: host->registeredFor = 0;
682:
683: /*
684: ** Set new mode to single until we know what is going on
685: */
686: host->mode = HT_TP_SINGLE;
687:
688: /*
689: ** Move all net objects from the net object to the pending queue.
690: */
691: if (!host->pending) host->pending = HTList_new();
692: for (cnt=0; cnt<piped; cnt++) {
693: HTNet * net = HTList_removeLastObject(host->pipeline);
694: if (CORE_TRACE) HTTrace("Host recover Resetting net object %p\n", net);
695: net->registeredFor = 0;
696: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, HTEvent_RESET);
697: HTList_appendObject(host->pending, net);
698: }
699: HTChannel_setSemaphore(host->channel, 0);
700: HTHost_clearChannel(host, HT_INTERRUPTED);
701: }
2.24 frystyk 702: #if 0
703: /*
704: ** We don't wanna change state here
705: */
2.18 eric 706: return HTHost_launchPending(host);
2.24 frystyk 707: #else
708: return YES;
709: #endif
2.18 eric 710: }
711: return NO;
712: }
713:
714: /*
2.8 frystyk 715: ** Handle the connection mode. The mode may change mode in the
716: ** middle of a connection.
717: */
718: PUBLIC HTTransportMode HTHost_mode (HTHost * host, BOOL * active)
719: {
720: return host ? host->mode : HT_TP_SINGLE;
721: }
722:
723: /*
724: ** If the new mode is lower than the old mode then adjust the pipeline
725: ** accordingly. That is, if we are going into single mode then move
726: ** all entries in the pipeline and move the rest to the pending
727: ** queue. They will get launched at a later point in time.
728: */
729: PUBLIC BOOL HTHost_setMode (HTHost * host, HTTransportMode mode)
730: {
731: if (host) {
732: /*
733: ** Check the new mode and see if we must adjust the queues.
734: */
735: if (mode == HT_TP_SINGLE && host->mode > mode) {
736: int piped = HTList_count(host->pipeline);
737: if (piped > 0) {
738: int cnt;
739: if (CORE_TRACE)
740: HTTrace("Host info... Moving %d Net objects from pipe line to pending queue\n", piped);
741: if (!host->pending) host->pending = HTList_new();
742: for (cnt=0; cnt<piped; cnt++) {
2.18 eric 743: HTNet * net = HTList_removeLastObject(host->pipeline);
744: if (CORE_TRACE) HTTrace("Host info... Resetting net object %p\n", net);
2.13 frystyk 745: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, HTEvent_RESET);
2.8 frystyk 746: HTList_appendObject(host->pending, net);
747: }
2.18 eric 748: HTChannel_setSemaphore(host->channel, 0);
749: HTHost_clearChannel(host, HT_INTERRUPTED);
2.8 frystyk 750: }
2.24 frystyk 751: }
752:
753: /*
754: ** If we know that this host is bad then we don't allow anything than
755: ** single mode. We can't recover connections for the rest of our life
756: */
757: if (mode == HT_TP_PIPELINE && host->recovered > MAX_HOST_RECOVER) {
758: if (PROT_TRACE)
759: HTTrace("Host info... %p is bad for pipelining so we won't do it!!!\n",
760: host);
761: } else {
762: host->mode = mode;
763: if (PROT_TRACE)
764: HTTrace("Host info... New mode is %d for host %p\n", host->mode, host);
765: }
2.8 frystyk 766: }
767: return NO;
768: }
769:
770: /*
771: ** Check whether a host is idle meaning if it is ready for a new
772: ** request which depends on the mode of the host. If the host is
773: ** idle, i.e. ready for use then return YES else NO. If the host supports
774: ** persistent connections then still only return idle if no requests are
775: ** ongoing.
776: */
777: PUBLIC BOOL HTHost_isIdle (HTHost * host)
778: {
779: return (host && HTList_count(host->pipeline) <= 0);
780: }
781:
2.13 frystyk 782: PRIVATE BOOL _roomInPipe (HTHost * host)
783: {
784: int count;
785: if (!host) return NO;
2.22 eric 786: if (host->reqsPerConnection && host->reqsMade >= host->reqsPerConnection)
787: return 0;
2.13 frystyk 788: count = HTList_count(host->pipeline);
789: switch (host->mode) {
790: case HT_TP_SINGLE:
791: return count <= 0;
792: case HT_TP_PIPELINE:
793: return count < MAX_PIPES;
794: case HT_TP_INTERLEAVE:
795: return YES;
796: }
797: return NO;
798: }
799:
2.8 frystyk 800: /*
801: ** Add a net object to the host object. If the host
802: ** is idle then add to active list (pipeline) else add
803: ** it to the pending list
804: ** Return HT_PENDING if we must pend, HT_OK, or HT_ERROR
805: */
806: PUBLIC int HTHost_addNet (HTHost * host, HTNet * net)
807: {
808: if (host && net) {
809: int status = HT_OK;
810:
2.18 eric 811: /*
812: ** If we don't have a socket already then check to see if we can get
813: ** one. Otherwise we put the host object into our pending queue.
814: */
815: if (!host->channel && HTNet_availableSockets() <= 0) {
2.8 frystyk 816: if (!PendHost) PendHost = HTList_new();
817: if (CORE_TRACE)
818: HTTrace("Host info... Add Host %p as pending\n", host);
819: HTList_addObject(PendHost, host);
820: status = HT_PENDING;
821: }
822:
2.18 eric 823: /*
824: ** Add net object to either active or pending queue.
825: */
2.13 frystyk 826: if (_roomInPipe(host)) {
2.8 frystyk 827: if (CORE_TRACE) HTTrace("Host info... Add Net %p to pipeline of host %p\n", net, host);
828: if (!host->pipeline) host->pipeline = HTList_new();
829: HTList_addObject(host->pipeline, net);
2.18 eric 830:
2.13 frystyk 831: /*
832: ** Send out the request if we're not blocked on write
833: */
2.23 eric 834: #if 0
2.13 frystyk 835: if (!(host->registeredFor & HTEvent_BITS(HTEvent_WRITE)))
836: status = HTHost_launchPending(host) == YES ? HT_OK : HT_ERROR;
2.23 eric 837: #endif
2.8 frystyk 838: } else {
839: if (CORE_TRACE) HTTrace("Host info... Add Net %p as pending\n", net);
840: if (!host->pending) host->pending = HTList_new();
841: HTList_addObject(host->pending, net);
842: status = HT_PENDING;
843: }
844: return status;
845: }
846: return HT_ERROR;
847: }
848:
2.13 frystyk 849: PUBLIC BOOL HTHost_free (HTHost * host, int status)
850: {
851: if (host->channel == NULL) return NO;
2.25 frystyk 852: #if 0
2.23 eric 853: if (host->persistent && !(host->reqsMade >= host->reqsPerConnection && HTList_count(host->pipeline) <= 1))
2.25 frystyk 854: #else
855: /* Check this with FTP as well */
856: if (host->persistent &&
857: (!host->reqsPerConnection ||
858: (host->reqsPerConnection && host->reqsMade < host->reqsPerConnection)))
859: #endif
2.23 eric 860: {
2.13 frystyk 861: if (CORE_TRACE)
862: HTTrace("Host Object. keeping socket %d\n", HTChannel_socket(host->channel));
863: HTChannel_delete(host->channel, status);
864: } else {
865: if (CORE_TRACE)
866: HTTrace("Host Object. closing socket %d\n", HTChannel_socket(host->channel));
867:
868: /*
869: ** By lowering the semaphore we make sure that the channel
870: ** is gonna be deleted
871: */
2.23 eric 872: #if 1
873: HTChannel_downSemaphore(host->channel);
874: HTHost_clearChannel(host, status);
875: #else
2.13 frystyk 876: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
877: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
878: host->registeredFor = 0;
879: HTChannel_downSemaphore(host->channel);
880: HTChannel_delete(host->channel, status);
881: host->channel = NULL;
2.22 eric 882: host->tcpstate = TCP_BEGIN;
2.23 eric 883: #endif
2.13 frystyk 884: }
885: return YES;
886: }
887:
2.8 frystyk 888: PUBLIC BOOL HTHost_deleteNet (HTHost * host, HTNet * net)
889: {
890: if (host && net) {
891: if (CORE_TRACE)
892: HTTrace("Host info... Remove Net %p from pipe line\n", net);
893: HTList_removeObject(host->pipeline, net);
894: HTList_removeObject(host->pending, net);
895: return YES;
896: }
897: return NO;
898: }
899:
900: /*
901: ** Handle pending host objects.
902: ** There are two ways we can end up with pending reqyests:
903: ** 1) If we are out of sockets then register new host objects as pending.
904: ** 2) If we are pending on a connection then register new net objects as
905: ** pending
906: ** This set of functions handles pending host objects and can start new
907: ** requests as resources get available
908: */
909:
910: /*
911: ** Check this host object for any pending requests and return the next
912: ** registered Net object.
913: */
914: PUBLIC HTNet * HTHost_nextPendingNet (HTHost * host)
915: {
916: HTNet * net = NULL;
917: if (host && host->pending && host->pipeline) {
2.18 eric 918: /*JK 23/Sep/96 Bug correction. Associated the following lines to the
919: **above if. There was a missing pair of brackets.
920: */
921: if ((net = (HTNet *) HTList_removeFirstObject(host->pending)) != NULL) {
922: if (PROT_TRACE)
923: HTTrace("Host info... Popping %p from pending net queue\n", net);
2.22 eric 924: /* HTList_addObject(host->pipeline, net); */
2.18 eric 925: }
2.8 frystyk 926: }
927: return net;
928: }
929:
930: /*
2.13 frystyk 931: ** Return the current list of pending host objects waiting for a socket
2.8 frystyk 932: */
933: PUBLIC HTHost * HTHost_nextPendingHost (void)
934: {
935: HTHost * host = NULL;
936: if (PendHost) {
937: if ((host = (HTHost *) HTList_removeFirstObject(PendHost)) != NULL)
938: if (PROT_TRACE)
939: HTTrace("Host info... Poping %p from pending host queue\n",
940: host);
941: }
942: return host;
943: }
944:
945: /*
946: ** Start the next pending request if any. First we look for pending
947: ** requests for the same host and then we check for any other pending
948: ** hosts
949: */
950: PUBLIC BOOL HTHost_launchPending (HTHost * host)
951: {
952: int available = HTNet_availableSockets();
953:
954: if (!host) {
955: if (PROT_TRACE) HTTrace("Host info... Bad arguments\n");
956: return NO;
957: }
958:
959: /*
960: ** Check if we do have resources available for a new request
961: ** This can either be reusing an existing connection or opening a new one
962: */
963: if (available > 0 || host->mode >= HT_TP_PIPELINE) {
2.23 eric 964: HTNet * net;
2.8 frystyk 965:
966: /*
2.13 frystyk 967: ** In pipeline we can only have one doing writing at a time.
968: ** We therefore check that there are no other Net object
969: ** registered for write
970: */
971: if (host->mode == HT_TP_PIPELINE) {
2.23 eric 972: net = (HTNet *) HTList_lastObject(host->pipeline);
973: if (net && net->registeredFor == HTEvent_WRITE)
2.13 frystyk 974: return NO;
975: }
976:
977: /*
978: ** Check the current Host object for pending Net objects
2.23 eric 979: **
980: ** Send out as many as will fit in pipe.
2.8 frystyk 981: */
2.23 eric 982: while (_roomInPipe(host) && (net = HTHost_nextPendingNet(host))) {
983: int status = HTNet_execute(net, HTEvent_WRITE);
984: if (status != HT_OK)
985: return status;
2.8 frystyk 986: }
987:
988: /*
989: ** Check for other pending Host objects
990: */
991: {
992: HTHost * pending = HTHost_nextPendingHost();
993: if (pending) {
994: HTNet * net = HTHost_nextPendingNet(pending);
2.13 frystyk 995: if (net) return HTNet_execute(net, HTEvent_WRITE);
2.8 frystyk 996: }
997: }
2.13 frystyk 998: } else
999: if (PROT_TRACE) HTTrace("Host info... No more requests.\n");
1000: return NO;
1001: }
1002:
1003: PUBLIC HTNet * HTHost_firstNet (HTHost * host)
1004: {
1005: return (HTNet *) HTList_firstObject(host->pipeline);
1006: }
1007:
1008: /*
1009: ** The host event manager keeps track of the state of it's client engines
1010: ** (typically HTTPEvent), accepting multiple blocks on read or write from
1011: ** multiple pipelined engines. It then registers its own engine
1012: ** (HostEvent) with the event manager.
1013: */
1014: PUBLIC int HTHost_connect (HTHost * host, HTNet * net, char * url, HTProtocolId port)
1015: {
1016: int status;
2.18 eric 1017: /* if (host && host->connecttime)
2.13 frystyk 1018: return HT_OK;
2.18 eric 1019: */
2.13 frystyk 1020: status = HTDoConnect(net, url, port);
2.22 eric 1021: if (status == HT_OK) {
1022: HTNet_host(net)->reqsMade++; /* @@@ - what if there's a connect but no req sent? */
2.13 frystyk 1023: return HT_OK;
2.22 eric 1024: }
2.13 frystyk 1025: if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1026: return HT_WOULD_BLOCK;
1027: return HT_ERROR; /* @@@ - some more deletion and stuff here? */
1028: }
1029:
1030: /*
1031: ** Rules: SINGLE: one element in pipe, either reading or writing
1032: ** PIPE: n element in pipe, n-1 reading, 1 writing
1033: */
1034: PUBLIC int HTHost_register (HTHost * host, HTNet * net, HTEventType type)
1035: {
1036: if (host && net) {
1037:
1038: /* net object may already be registered */
1039: if (HTEvent_BITS(type) & net->registeredFor)
1040: return NO;
1041: net->registeredFor ^= HTEvent_BITS(type);
1042:
1043: /* host object may already be registered */
1044: if (host->registeredFor & HTEvent_BITS(type))
1045: return YES;
1046: host->registeredFor ^= HTEvent_BITS(type);
1047: return HTEvent_register(HTChannel_socket(host->channel), type, *(host->events+HTEvent_INDEX(type)));
1048: }
1049: return NO;
1050: }
1051:
1052: PUBLIC int HTHost_unregister (HTHost * host, HTNet * net, HTEventType type)
1053: {
1054: if (host && net) {
1055:
1056: /* net object may no be registered */
1057: if (!(HTEvent_BITS(type) & net->registeredFor))
1058: return NO;
1059: net->registeredFor ^= HTEvent_BITS(type);
1060:
1061: /* host object may no be registered */
1062: if (!(host->registeredFor & HTEvent_BITS(type)))
1063: return YES;
1064: host->registeredFor ^= HTEvent_BITS(type);
1065:
1066: /* stay registered for READ to catch a socket close */
1067: /* WRITE and CONNECT can be unregistered, though */
1068: if ((type == HTEvent_WRITE && isLastInPipe(host, net)) ||
1069: type == HTEvent_CONNECT)
1070: /* if we are blocked downstream, shut down the whole pipe */
1071: HTEvent_unregister(HTChannel_socket(host->channel), type);
1072: return YES;
1073: }
1074: return NO;
1075: }
1076:
1077: /*
1078: ** The reader tells HostEvent that it's stream did not finish the data
1079: */
1080: PUBLIC BOOL HTHost_setRemainingRead (HTHost * host, size_t remaining)
1081: {
1082: if (host == NULL) return NO;
1083: host->remainingRead = remaining;
2.20 frystyk 1084: if (PROT_TRACE) HTTrace("Host........ %d bytes remaining \n", remaining);
2.13 frystyk 1085: return YES;
1086: }
1087:
1088: PUBLIC SockA * HTHost_getSockAddr (HTHost * host)
1089: {
1090: if (!host) return NULL;
1091: return &host->sock_addr;
1092: }
1093:
1094: PUBLIC BOOL HTHost_setHome (HTHost * host, int home)
1095: {
1096: if (!host) return NO;
1097: host->home = home;
1098: return YES;
1099: }
1100:
1101: PUBLIC int HTHost_home (HTHost * host)
1102: {
1103: if (!host) return 0;
1104: return host->home;
1105: }
1106:
1107: #if 0 /* Is a macro right now */
2.21 frystyk 1108: PRIVATE BOOL HTHost_setDNS5 (HTHost * host, HTdns * dns)
2.13 frystyk 1109: {
1110: if (!host) return NO;
1111: host->dns = dns;
1112: return YES;
1113: }
1114: #endif
1115:
1116: PUBLIC BOOL HTHost_setChannel (HTHost * host, HTChannel * channel)
1117: {
1118: if (!host) return NO;
1119: host->channel = channel;
1120: return YES;
1121: }
1122:
1123: PUBLIC HTNet * HTHost_getReadNet(HTHost * host)
1124: {
1125: if (host) {
1126: if (host->mode == HT_TP_INTERLEAVE) {
2.21 frystyk 1127: #ifdef HT_MUX
2.13 frystyk 1128: HTMuxChannel * muxch = HTMuxChannel_find(host);
1129: return HTMuxChannel_net(muxch);
2.21 frystyk 1130: #endif
2.13 frystyk 1131: }
1132: return (HTNet *) HTList_firstObject(host->pipeline);
1133: }
1134: return NULL;
1135: }
1136:
1137: PUBLIC HTNet * HTHost_getWriteNet(HTHost * host)
1138: {
1139: return host ? (HTNet *) HTList_lastObject(host->pipeline) : NULL;
1140: }
1141:
1142: /*
1143: ** Create the input stream and bind it to the channel
1144: ** Please read the description in the HTIOStream module for the parameters
1145: */
1146: PUBLIC HTInputStream * HTHost_getInput (HTHost * host, HTTransport * tp,
1147: void * param, int mode)
1148: {
1149: if (host && host->channel && tp) {
1150: HTChannel * ch = host->channel;
1151: HTInputStream * input = (*tp->input_new)(host, ch, param, mode);
1152: HTChannel_setInput(ch, input);
1153: return HTChannel_getChannelIStream(ch);
1154: }
2.24 frystyk 1155: if (CORE_TRACE) HTTrace("Host Object. Can't create input stream\n");
2.13 frystyk 1156: return NULL;
1157: }
1158:
1159: PUBLIC HTOutputStream * HTHost_getOutput (HTHost * host, HTTransport * tp,
1160: void * param, int mode)
1161: {
1162: if (host && host->channel && tp) {
1163: HTChannel * ch = host->channel;
1164: HTOutputStream * output = (*tp->output_new)(host, ch, param, mode);
1165: HTChannel_setOutput(ch, output);
1166: return output;
1167: }
2.24 frystyk 1168: if (CORE_TRACE) HTTrace("Host Object. Can't create output stream\n");
2.13 frystyk 1169: return NULL;
1170: }
1171:
1172: PUBLIC HTOutputStream * HTHost_output (HTHost * host, HTNet * net)
1173: {
1174: if (host && host->channel && net) {
1175: HTOutputStream * output = HTChannel_output(host->channel);
2.8 frystyk 1176:
1177: /*
2.13 frystyk 1178: ** If we are in MUX mode then create new output stream on top
1179: ** of the already existing one. Otherwise just return what we
1180: ** have.
2.8 frystyk 1181: */
2.13 frystyk 1182: if (host->mode == HT_TP_INTERLEAVE) {
2.21 frystyk 1183: #ifdef HT_MUX
2.13 frystyk 1184: HTStream * target = (HTStream *) HTChannel_output(host->channel);
1185: output = HTMuxWriter_new(host, net, target);
2.21 frystyk 1186: #endif
2.8 frystyk 1187: }
2.13 frystyk 1188: return output;
1189: }
1190: return NULL;
1191: }
1192:
1193: PUBLIC int HTHost_read(HTHost * host, HTNet * net)
1194: {
1195: HTInputStream * input = HTChannel_input(host->channel);
1196: if (net != HTHost_getReadNet(host)) {
1197: HTHost_register(host, net, HTEvent_READ);
1198: return HT_WOULD_BLOCK;
1199: }
2.17 frystyk 1200:
1201: /*
1202: ** If there is no input channel then this can either mean that
1203: ** we have lost the channel or an error occurred. We return
1204: ** HT_CLOSED as this is a sign to the caller that we don't
1205: ** have a channel
1206: */
1207: return input ? (*input->isa->read)(input) : HT_CLOSED;
2.13 frystyk 1208: }
1209:
1210: PUBLIC BOOL HTHost_setConsumed(HTHost * host, size_t bytes)
1211: {
1212: HTInputStream * input;
1213: if (!host || !host->channel) return NO;
1214: if ((input = HTChannel_input(host->channel)) == NULL)
1215: return NO;
2.20 frystyk 1216: if (PROT_TRACE)
1217: HTTrace("Host........ passing %d bytes as consumed to %p\n", bytes, input);
2.13 frystyk 1218: return (*input->isa->consumed)(input, bytes);
1219: }
1220:
1221: PUBLIC int HTHost_hash (HTHost * host)
1222: {
1223: return host ? host->hash : -1;
1224: }
1225:
2.26 ! frystyk 1226: PUBLIC BOOL HTHost_setWriteDelay (HTHost * host, ms_t delay)
2.13 frystyk 1227: {
2.26 ! frystyk 1228: if (host && delay >= 0) {
! 1229: host->delay = delay;
! 1230: return YES;
! 1231: }
! 1232: return NO;
! 1233: }
! 1234:
! 1235: PUBLIC ms_t HTHost_writeDelay (HTHost * host)
! 1236: {
! 1237: return host ? host->delay : 0;
! 1238: }
! 1239:
! 1240: PUBLIC int HTHost_findWriteDelay (HTHost * host, ms_t lastFlushTime, int buffSize)
! 1241: {
2.15 eric 1242: unsigned short mtu;
2.18 eric 1243: int ret = -1;
2.15 eric 1244: int socket = HTChannel_socket(host->channel);
2.18 eric 1245: #ifndef WWW_MSWINDOWS
2.15 eric 1246: ret = ioctl(socket, 666, (unsigned long)&mtu);
2.18 eric 1247: #endif /* WWW_MSWINDOWS */
2.15 eric 1248: if ((ret == 0 && buffSize >= mtu) || host->forceWriteFlush)
2.13 frystyk 1249: return 0;
2.26 ! frystyk 1250: return host->delay;
2.13 frystyk 1251: }
1252:
2.26 ! frystyk 1253: PUBLIC BOOL HTHost_setDefaultWriteDelay (ms_t delay)
! 1254: {
! 1255: if (delay >= 0) {
! 1256: WriteDelay = delay;
! 1257: if (CORE_TRACE) HTTrace("Host........ Default write delay is %d ms\n", delay);
! 1258: return YES;
! 1259: }
! 1260: return NO;
! 1261: }
! 1262:
! 1263: PUBLIC ms_t HTHost_defaultWriteDelay (void)
! 1264: {
! 1265: return WriteDelay;
! 1266: }
! 1267:
2.13 frystyk 1268: PUBLIC int HTHost_forceFlush(HTHost * host)
1269: {
1270: HTNet * targetNet = (HTNet *)HTList_lastObject(host->pipeline);
1271: int wasForced = host->forceWriteFlush;
1272: int ret;
1273: if (targetNet == NULL)
1274: return HT_ERROR;
1275: if (CORE_TRACE)
2.14 frystyk 1276: HTTrace(HTHIDE("Host Event.. FLUSH passed to %s.\n"),
2.13 frystyk 1277: HTHIDE(HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet)))));
1278: host->forceWriteFlush = YES;
1279: ret = (*targetNet->event.cbf)(HTChannel_socket(host->channel), targetNet->event.param, HTEvent_FLUSH);
1280: host->forceWriteFlush = wasForced;
1281: return ret;
2.1 frystyk 1282: }
2.11 kahan 1283:
2.13 frystyk 1284: PUBLIC int HTHost_eventTimeout (void)
1285: {
1286: return EventTimeout;
1287: }
2.11 kahan 1288:
2.13 frystyk 1289: PUBLIC void HTHost_setEventTimeout (int millis)
1290: {
1291: EventTimeout = millis;
1292: if (CORE_TRACE) HTTrace("Host........ Setting event timeout to %d ms\n", millis);
1293: }
Webmaster
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to HTHost.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Public] / libwww / Library / src