Annotation of libwww/Library/src/HTHost.c, revision 2.29
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.
2.29 ! frystyk 6: ** @(#) $Id: HTHost.c,v 2.28 1997/02/16 17:49:19 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 */
2.29 ! frystyk 29:
! 30: #if 0
2.1 frystyk 31: #define TCP_TIMEOUT 3600L /* Default TCP timeout i 1 h */
2.29 ! frystyk 32: #else
! 33: /*
! 34: ** After the connection management draft by Jim Gettys, we have changed this
! 35: ** to 60 secs instead of an hour
! 36: */
! 37: #define TCP_TIMEOUT 60L /* Default TCP timeout is 60s */
! 38: #endif
! 39:
2.19 frystyk 40: #define MAX_PIPES 50 /* maximum number of pipelined requests */
2.24 frystyk 41: #define MAX_HOST_RECOVER 3 /* Max number of auto recovery */
2.27 frystyk 42: #define DEFAULT_DELAY 50 /* Default write flush delay in ms */
2.1 frystyk 43:
2.13 frystyk 44: struct _HTInputStream {
45: const HTInputStreamClass * isa;
2.1 frystyk 46: };
47:
2.13 frystyk 48: PRIVATE int HostEvent(SOCKET soc, void * pVoid, HTEventType type);
49:
50: /* Type definitions and global variables etc. local to this module */
2.1 frystyk 51: PRIVATE time_t HostTimeout = HOST_TIMEOUT; /* Timeout on host entries */
52: PRIVATE time_t TCPTimeout = TCP_TIMEOUT; /* Timeout on persistent channels */
53:
2.8 frystyk 54: PRIVATE HTList ** HostTable = NULL;
55: PRIVATE HTList * PendHost = NULL; /* List of pending host elements */
2.1 frystyk 56:
2.13 frystyk 57: PRIVATE int EventTimeout = -1; /* Global Host event timeout */
58:
2.26 frystyk 59: PRIVATE WriteDelay = DEFAULT_DELAY; /* Delay in ms */
60:
2.1 frystyk 61: /* ------------------------------------------------------------------------- */
62:
63: PRIVATE void free_object (HTHost * me)
64: {
65: if (me) {
66: HT_FREE(me->hostname);
67: HT_FREE(me->type);
2.12 frystyk 68: HT_FREE(me->server);
69: HT_FREE(me->user_agent);
70: HT_FREE(me->range_units);
2.3 eric 71: if (me->channel) {
2.5 eric 72: HTChannel_delete(me->channel, HT_OK);
2.3 eric 73: me->channel = NULL;
74: }
2.18 eric 75: {
76: int i;
77: for (i = 0; i < HTEvent_TYPES; i++)
78: HTEvent_delete(me->events[i]);
79: }
2.8 frystyk 80: HTList_delete(me->pipeline);
81: HTList_delete(me->pending);
2.1 frystyk 82: HT_FREE(me);
83: }
84: }
85:
86: PRIVATE BOOL delete_object (HTList * list, HTHost * me)
87: {
2.2 frystyk 88: if (CORE_TRACE) HTTrace("Host info... object %p from list %p\n", me, list);
2.1 frystyk 89: HTList_removeObject(list, (void *) me);
90: free_object(me);
91: return YES;
92: }
93:
2.13 frystyk 94: PRIVATE BOOL isLastInPipe (HTHost * host, HTNet * net)
95: {
96: return HTList_lastObject(host->pipeline) == net;
97: }
98:
99: /*
100: ** HostEvent - host event manager - recieves events from the event
101: ** manager and dispatches them to the client net objects by calling the
102: ** net object's cbf.
103: **
104: */
105: PRIVATE int HostEvent (SOCKET soc, void * pVoid, HTEventType type)
106: {
107: HTHost * host = (HTHost *)pVoid;
108:
2.18 eric 109: if (type == HTEvent_READ || type == HTEvent_CLOSE) {
2.13 frystyk 110: HTNet * targetNet;
111:
112: /* call the first net object */
113: do {
114: int ret;
115: targetNet = (HTNet *)HTList_firstObject(host->pipeline);
116: if (targetNet) {
117: if (CORE_TRACE)
2.28 frystyk 118: HTTrace("Host Event.. READ passed to `%s\'\n",
119: HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet))));
2.13 frystyk 120: if ((ret = (*targetNet->event.cbf)(HTChannel_socket(host->channel),
121: targetNet->event.param, type)) != HT_OK)
122: return ret;
123: }
124: if (targetNet == NULL && host->remainingRead > 0) {
125: HTTrace("HostEvent... Error: %d bytes left to read and nowhere to put them\n", host->remainingRead);
126: host->remainingRead = 0;
127: /*
128: ** Fall through to close the channel
129: */
130: }
131: /* call pipelined net object to eat all the data in the channel */
132: } while (host->remainingRead > 0);
133:
134: /* last target net should have set remainingRead to 0 */
135: if (targetNet)
136: return HT_OK;
137:
138: /* If there was notargetNet, it should be a close */
2.28 frystyk 139: if (CORE_TRACE)
140: HTTrace("Host Event.. host %p `%s\' closed connection.\n",
141: host, host->hostname);
2.13 frystyk 142:
143: /* Is there garbage in the channel? Let's check: */
144: {
145: char buf[256];
146: int ret;
2.28 frystyk 147: memset(buf, '\0', sizeof(buf));
148: while ((ret = NETREAD(HTChannel_socket(host->channel), buf, sizeof(buf))) > 0) {
149: if (CORE_TRACE)
150: HTTrace("Host Event.. Host %p `%s\' had %d extraneous bytes: `%s\'\n",
151: host, host->hostname, ret, buf);
152: memset(buf, '\0', sizeof(buf));
153: }
2.13 frystyk 154: }
155: HTHost_clearChannel(host, HT_OK);
2.28 frystyk 156: return HT_OK; /* extra garbage does not constitute an application error */
2.13 frystyk 157:
2.18 eric 158: } else if (type == HTEvent_WRITE || type == HTEvent_CONNECT) {
2.13 frystyk 159: HTNet * targetNet = (HTNet *)HTList_lastObject(host->pipeline);
160: if (targetNet) {
161: if (CORE_TRACE)
2.28 frystyk 162: HTTrace("Host Event.. WRITE passed to `%s\'\n",
163: HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet))));
2.13 frystyk 164: return (*targetNet->event.cbf)(HTChannel_socket(host->channel), targetNet->event.param, type);
165: }
2.28 frystyk 166: HTTrace("Host Event.. Who wants to write to `%s\'?\n", host->hostname);
2.13 frystyk 167: return HT_ERROR;
2.14 frystyk 168: } else if (type == HTEvent_TIMEOUT) {
169:
170: if (CORE_TRACE)
171: HTTrace("Host Event.. WE SHOULD DELETE ALL REQUEST ON `%s\'?\n",
172: host->hostname);
2.13 frystyk 173:
2.14 frystyk 174: } else {
2.28 frystyk 175: HTTrace("Don't know how to handle OOB data from `%s\'?\n",
2.14 frystyk 176: host->hostname);
177: }
2.13 frystyk 178: return HT_OK;
179: }
180:
2.1 frystyk 181: /*
182: ** Search the host info cache for a host object or create a new one
183: ** and add it. Examples of host names are
184: **
185: ** www.w3.org
186: ** www.foo.com:8000
187: ** 18.52.0.18
188: **
189: ** Returns Host object or NULL if error. You may get back an already
190: ** existing host object - you're not guaranteed a new one each time.
191: */
2.13 frystyk 192:
2.15 eric 193: PUBLIC HTHost * HTHost_new (char * host, u_short u_port)
2.1 frystyk 194: {
195: HTList * list = NULL; /* Current list in cache */
196: HTHost * pres = NULL;
2.13 frystyk 197: int hash = 0;
2.1 frystyk 198: if (!host) {
2.2 frystyk 199: if (CORE_TRACE) HTTrace("Host info... Bad argument\n");
2.1 frystyk 200: return NULL;
201: }
202:
203: /* Find a hash for this host */
204: {
205: char *ptr;
206: for (ptr=host; *ptr; ptr++)
2.13 frystyk 207: hash = (int) ((hash * 3 + (*(unsigned char *) ptr)) % HOST_HASH_SIZE);
2.1 frystyk 208: if (!HostTable) {
2.13 frystyk 209: if ((HostTable = (HTList **) HT_CALLOC(HOST_HASH_SIZE,
2.1 frystyk 210: sizeof(HTList *))) == NULL)
211: HT_OUTOFMEM("HTHost_find");
212: }
213: if (!HostTable[hash]) HostTable[hash] = HTList_new();
214: list = HostTable[hash];
215: }
216:
217: /* Search the cache */
218: {
219: HTList * cur = list;
220: while ((pres = (HTHost *) HTList_nextObject(cur))) {
2.15 eric 221: if (!strcmp(pres->hostname, host) && u_port == pres->u_port) {
2.8 frystyk 222: if (HTHost_isIdle(pres) && time(NULL)>pres->ntime+HostTimeout){
2.2 frystyk 223: if (CORE_TRACE)
2.1 frystyk 224: HTTrace("Host info... Collecting host info %p\n",pres);
225: delete_object(list, pres);
226: pres = NULL;
227: }
228: break;
229: }
230: }
231: }
232:
2.8 frystyk 233: /* If not found then create new Host object, else use existing one */
2.1 frystyk 234: if (pres) {
235: if (pres->channel) {
2.13 frystyk 236: if (pres->expires && pres->expires < time(NULL)) { /* Cached channel is cold */
2.2 frystyk 237: if (CORE_TRACE)
2.1 frystyk 238: HTTrace("Host info... Persistent channel %p gotten cold\n",
239: pres->channel);
2.5 eric 240: HTChannel_delete(pres->channel, HT_OK);
2.1 frystyk 241: pres->channel = NULL;
242: } else {
2.2 frystyk 243: if (CORE_TRACE)
2.1 frystyk 244: HTTrace("Host info... REUSING CHANNEL %p\n",pres->channel);
245: }
246: }
247: } else {
248: if ((pres = (HTHost *) HT_CALLOC(1, sizeof(HTHost))) == NULL)
249: HT_OUTOFMEM("HTHost_add");
2.13 frystyk 250: pres->hash = hash;
2.1 frystyk 251: StrAllocCopy(pres->hostname, host);
2.15 eric 252: pres->u_port = u_port;
2.1 frystyk 253: pres->ntime = time(NULL);
2.8 frystyk 254: pres->mode = HT_TP_SINGLE;
2.26 frystyk 255: pres->delay = WriteDelay;
2.18 eric 256: {
2.26 frystyk 257: int i;
258: for (i = 0; i < HTEvent_TYPES; i++)
259: pres->events[i]= HTEvent_new(HostEvent, pres, HT_PRIORITY_MAX, EventTimeout);
2.18 eric 260: }
2.2 frystyk 261: if (CORE_TRACE)
2.24 frystyk 262: HTTrace("Host info... added `%s\' with host %p to list %p\n",
263: host, pres, list);
2.1 frystyk 264: HTList_addObject(list, (void *) pres);
265: }
266: return pres;
2.9 frystyk 267: }
268:
2.15 eric 269: PUBLIC HTHost * HTHost_newWParse (HTRequest * request, char * url, u_short u_port)
2.13 frystyk 270: {
271: char * port;
272: char * fullhost = NULL;
273: char * parsedHost = NULL;
274: SockA * sin;
275: HTHost * me;
276: char * proxy = HTRequest_proxy(request);
277:
278: fullhost = HTParse(proxy ? proxy : url, "", PARSE_HOST);
279:
280: /* If there's an @ then use the stuff after it as a hostname */
281: if (fullhost) {
282: char * at_sign;
283: if ((at_sign = strchr(fullhost, '@')) != NULL)
284: parsedHost = at_sign+1;
285: else
286: parsedHost = fullhost;
287: }
288: if (!parsedHost || !*parsedHost) {
289: HTRequest_addError(request, ERR_FATAL, NO, HTERR_NO_HOST,
290: NULL, 0, "HTDoConnect");
291: HT_FREE(fullhost);
292: return NULL;
293: }
294: port = strchr(parsedHost, ':');
295: if (PROT_TRACE)
296: HTTrace("HTDoConnect. Looking up `%s\'\n", parsedHost);
297: if (port) {
298: *port++ = '\0';
299: if (!*port || !isdigit(*port))
300: port = 0;
2.24 frystyk 301: u_port = (u_short) atol(port);
2.13 frystyk 302: }
303: /* Find information about this host */
2.15 eric 304: if ((me = HTHost_new(parsedHost, u_port)) == NULL) {
2.13 frystyk 305: if (PROT_TRACE)HTTrace("HTDoConnect. Can't get host info\n");
306: me->tcpstate = TCP_ERROR;
307: return NULL;
308: }
309: sin = &me->sock_addr;
310: memset((void *) sin, '\0', sizeof(SockA));
311: #ifdef DECNET
312: sin->sdn_family = AF_DECnet;
313: net->sock_addr.sdn_objnum = port ? (unsigned char)(strtol(port, (char **) 0, 10)) : DNP_OBJ;
314: #else /* Internet */
315: sin->sin_family = AF_INET;
2.15 eric 316: sin->sin_port = htons(u_port);
2.13 frystyk 317: #endif
318: HT_FREE(fullhost); /* parsedHost points into fullhost */
319: return me;
320: }
321:
2.9 frystyk 322: /*
323: ** Search the host info cache for a host object. Examples of host names:
324: **
325: ** www.w3.org
326: ** www.foo.com:8000
327: ** 18.52.0.18
328: **
329: ** Returns Host object or NULL if not found.
330: */
331: PUBLIC HTHost * HTHost_find (char * host)
332: {
333: HTList * list = NULL; /* Current list in cache */
334: HTHost * pres = NULL;
335: if (CORE_TRACE)
336: HTTrace("Host info... Looking for `%s\'\n", host ? host : "<null>");
337:
338: /* Find a hash for this host */
339: if (host && HostTable) {
340: int hash = 0;
341: char *ptr;
342: for (ptr=host; *ptr; ptr++)
2.13 frystyk 343: hash = (int) ((hash * 3 + (*(unsigned char *) ptr)) % HOST_HASH_SIZE);
2.9 frystyk 344: if (!HostTable[hash]) return NULL;
345: list = HostTable[hash];
346:
347: /* Search the cache */
348: {
349: HTList * cur = list;
350: while ((pres = (HTHost *) HTList_nextObject(cur))) {
351: if (!strcmp(pres->hostname, host)) {
352: if (time(NULL) > pres->ntime + HostTimeout) {
353: if (CORE_TRACE)
354: HTTrace("Host info... Collecting host %p\n", pres);
355: delete_object(list, pres);
356: pres = NULL;
357: } else {
358: if (CORE_TRACE)
359: HTTrace("Host info... Found `%s\'\n", host);
360: }
361: return pres;
362: }
363: }
364: }
365: }
366: return NULL;
2.1 frystyk 367: }
368:
369: /*
2.8 frystyk 370: ** Get and set the hostname of the remote host
371: */
372: PUBLIC char * HTHost_name (HTHost * host)
373: {
374: return host ? host->hostname : NULL;
375: }
376:
377: /*
2.1 frystyk 378: ** Get and set the type class of the remote host
379: */
380: PUBLIC char * HTHost_class (HTHost * host)
381: {
382: return host ? host->type : NULL;
383: }
384:
385: PUBLIC void HTHost_setClass (HTHost * host, char * s_class)
386: {
387: if (host && s_class) StrAllocCopy(host->type, s_class);
388: }
389:
390: /*
391: ** Get and set the version of the remote host
392: */
393: PUBLIC int HTHost_version (HTHost *host)
394: {
395: return host ? host->version : 0;
396: }
397:
398: PUBLIC void HTHost_setVersion (HTHost * host, int version)
399: {
400: if (host) host->version = version;
401: }
402:
403: /*
404: ** Get and set the cache timeout for persistent entries.
405: ** The default value is TCP_TIMEOUT
406: */
407: PUBLIC void HTHost_setPersistTimeout (time_t timeout)
408: {
409: TCPTimeout = timeout;
410: }
411:
412: PUBLIC time_t HTHost_persistTimeout (time_t timeout)
413: {
414: return TCPTimeout;
415: }
416:
417: /* Persistent Connection Expiration
418: ** --------------------------------
419: ** Should normally not be used. If, then use calendar time.
420: */
421: PUBLIC void HTHost_setPersistExpires (HTHost * host, time_t expires)
422: {
423: if (host) host->expires = expires;
424: }
425:
426: PUBLIC time_t HTHost_persistExpires (HTHost * host)
427: {
428: return host ? host->expires : -1;
429: }
430:
2.22 eric 431: PUBLIC void HTHost_setReqsPerConnection (HTHost * host, int reqs)
432: {
433: if (host) host->reqsPerConnection = reqs;
434: }
435:
436: PUBLIC int HTHost_reqsPerConnection (HTHost * host)
437: {
438: return host ? host->reqsPerConnection : -1;
439: }
440:
441: PUBLIC void HTHost_setReqsMade (HTHost * host, int reqs)
442: {
443: if (host) host->reqsMade = reqs;
444: }
445:
446: PUBLIC int HTHost_reqsMade (HTHost * host)
447: {
448: return host ? host->reqsMade : -1;
449: }
450:
451:
2.1 frystyk 452: /*
2.6 frystyk 453: ** Public methods for this host
454: */
455: PUBLIC HTMethod HTHost_publicMethods (HTHost * me)
456: {
457: return me ? me->methods : METHOD_INVALID;
458: }
459:
460: PUBLIC void HTHost_setPublicMethods (HTHost * me, HTMethod methodset)
461: {
462: if (me) me->methods = methodset;
463: }
464:
465: PUBLIC void HTHost_appendPublicMethods (HTHost * me, HTMethod methodset)
466: {
467: if (me) me->methods |= methodset;
468: }
469:
470: /*
471: ** Get and set the server name of the remote host
472: */
473: PUBLIC char * HTHost_server (HTHost * host)
474: {
475: return host ? host->server : NULL;
476: }
477:
478: PUBLIC BOOL HTHost_setServer (HTHost * host, const char * server)
479: {
480: if (host && server) {
481: StrAllocCopy(host->server, server);
482: return YES;
483: }
484: return NO;
485: }
486:
487: /*
488: ** Get and set the userAgent name of the remote host
489: */
490: PUBLIC char * HTHost_userAgent (HTHost * host)
491: {
492: return host ? host->user_agent : NULL;
493: }
494:
495: PUBLIC BOOL HTHost_setUserAgent (HTHost * host, const char * userAgent)
496: {
497: if (host && userAgent) {
498: StrAllocCopy(host->user_agent, userAgent);
499: return YES;
2.12 frystyk 500: }
501: return NO;
502: }
503:
504: /*
505: ** Get and set acceptable range units
506: */
507: PUBLIC char * HTHost_rangeUnits (HTHost * host)
508: {
509: return host ? host->range_units : NULL;
510: }
511:
512: PUBLIC BOOL HTHost_setRangeUnits (HTHost * host, const char * units)
513: {
514: if (host && units) {
515: StrAllocCopy(host->range_units, units);
516: return YES;
517: }
518: return NO;
519: }
520:
521: /*
522: ** Checks whether a specific range unit is OK. We always say
523: ** YES except if we have a specific statement from the server that
524: ** it doesn't understand byte ranges - that is - it has sent "none"
525: ** in a "Accept-Range" response header
526: */
527: PUBLIC BOOL HTHost_isRangeUnitAcceptable (HTHost * host, const char * unit)
528: {
529: if (host && unit) {
530: #if 0
531: if (host->range_units) {
532: char * start = strcasestr(host->range_units, "none");
533:
534: /*
535: ** Check that "none" is infact a token. It could be part of some
536: ** other valid string, so we'd better check for it.
537: */
538: if (start) {
539:
540:
541: }
542: return NO;
543: }
544: #endif
545: return strcasecomp(unit, "bytes") ? NO : YES;
2.6 frystyk 546: }
547: return NO;
548: }
549:
2.1 frystyk 550: /* HTHost_catchClose
551: ** -----------------
552: ** This function is registered when the socket is idle so that we get
553: ** a notification if the socket closes at the other end. At this point
554: ** we can't use the request object as it might have been freed a long
555: ** time ago.
556: */
2.13 frystyk 557: PUBLIC int HTHost_catchClose (SOCKET soc, void * context, HTEventType type)
2.1 frystyk 558: {
2.13 frystyk 559: HTNet * net = (HTNet *)context;
560: HTHost * host = net->host;
2.2 frystyk 561: if (CORE_TRACE)
2.13 frystyk 562: HTTrace("Catch Close. called with socket %d with type %x\n",
563: soc, type);
564: if (type == HTEvent_READ) {
2.1 frystyk 565: HTChannel * ch = HTChannel_find(soc); /* Find associated channel */
2.8 frystyk 566: HTHost * host = HTChannel_host(ch); /* and associated host */
2.1 frystyk 567: if (ch && host) {
2.2 frystyk 568: if (CORE_TRACE) HTTrace("Catch Close. CLOSING socket %d\n", soc);
2.8 frystyk 569: HTHost_clearChannel(host, HT_OK);
2.1 frystyk 570: } else {
2.2 frystyk 571: if (CORE_TRACE) HTTrace("Catch Close. socket %d NOT FOUND!\n",soc);
2.1 frystyk 572: }
573: }
2.13 frystyk 574: HTHost_unregister(host, net, HTEvent_CLOSE);
2.1 frystyk 575: return HT_OK;
576: }
577:
578: /*
579: ** As soon as we know that this host accepts persistent connections,
580: ** we associated the channel with the host.
581: ** We don't want more than MaxSockets-2 connections to be persistent in
582: ** order to avoid deadlock.
583: */
2.13 frystyk 584: PUBLIC BOOL HTHost_setPersistent (HTHost * host,
585: BOOL persistent,
586: HTTransportMode mode)
2.1 frystyk 587: {
2.13 frystyk 588: if (!host) return NO;
589:
590: if (!persistent) {
591: /*
592: ** We use the HT_IGNORE status code as we don't want to free
593: ** the stream at this point in time. The situation we want to
594: ** avoid is that we free the channel from within the stream pipe.
595: ** This will lead to an infinite look having the stream freing
596: ** itself.
597: */
598: return HTHost_clearChannel(host, HT_IGNORE);
599: }
600:
2.18 eric 601: /*
602: ** Set the host persistent if not already. Also update the mode to
603: ** the new one - it may have changed
604: */
605: HTHost_setMode(host, mode);
606: if (!host->persistent) {
2.13 frystyk 607: SOCKET sockfd = HTChannel_socket(host->channel);
2.8 frystyk 608: if (sockfd != INVSOC && HTNet_availablePersistentSockets() > 0) {
2.13 frystyk 609: host->persistent = YES;
2.1 frystyk 610: host->expires = time(NULL) + TCPTimeout; /* Default timeout */
2.13 frystyk 611: HTChannel_setHost(host->channel, host);
2.8 frystyk 612: HTNet_increasePersistentSocket();
2.2 frystyk 613: if (CORE_TRACE)
2.1 frystyk 614: HTTrace("Host info... added host %p as persistent\n", host);
615: return YES;
616: } else {
2.2 frystyk 617: if (CORE_TRACE)
618: HTTrace("Host info... no room for persistent socket %d\n",
2.7 frystyk 619: sockfd);
2.18 eric 620: return NO;
2.1 frystyk 621: }
2.18 eric 622: } else {
623: if (CORE_TRACE) HTTrace("Host info... %p already persistent\n", host);
624: return YES;
2.1 frystyk 625: }
626: return NO;
627: }
628:
629: /*
2.13 frystyk 630: ** Check whether we have a persistent channel or not
631: */
632: PUBLIC BOOL HTHost_isPersistent (HTHost * host)
633: {
634: return host && host->persistent;
635: }
636:
637: /*
2.1 frystyk 638: ** Find persistent channel associated with this host.
639: */
640: PUBLIC HTChannel * HTHost_channel (HTHost * host)
641: {
642: return host ? host->channel : NULL;
643: }
644:
645: /*
646: ** Clear the persistent entry by deleting the channel object. Note that
647: ** the channel object is only deleted if it's not used anymore.
648: */
2.8 frystyk 649: PUBLIC BOOL HTHost_clearChannel (HTHost * host, int status)
2.1 frystyk 650: {
651: if (host && host->channel) {
2.8 frystyk 652: HTChannel_setHost(host->channel, NULL);
2.10 frystyk 653:
2.13 frystyk 654: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
655: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
2.18 eric 656: host->registeredFor = 0;
2.13 frystyk 657:
2.10 frystyk 658: /*
659: ** We don't want to recursively delete ourselves so if we are
660: ** called from within the stream pipe then don't delete the channel
661: ** at this point
662: */
2.8 frystyk 663: HTChannel_delete(host->channel, status);
2.18 eric 664: host->expires = 0;
2.1 frystyk 665: host->channel = NULL;
2.22 eric 666: host->tcpstate = TCP_BEGIN;
667: host->reqsMade = 0;
2.28 frystyk 668: if (HTHost_isPersistent(host)) HTNet_decreasePersistentSocket();
669: if (CORE_TRACE) HTTrace("Host info... removed host %p as persistent\n", host);
2.1 frystyk 670: return YES;
671: }
672: return NO;
673: }
674:
675: /*
2.18 eric 676: ** Move all entries in the pipeline and move the rest to the pending
677: ** queue. They will get launched at a later point in time.
678: */
679: PUBLIC BOOL HTHost_recoverPipe (HTHost * host)
680: {
681: if (host) {
682: int piped = HTList_count(host->pipeline);
683: if (piped > 0) {
684: int cnt;
2.24 frystyk 685: host->recovered++;
2.18 eric 686: if (CORE_TRACE)
2.24 frystyk 687: HTTrace("Host recovered %d times. Moving %d Net objects from pipe line to pending queue\n",
688: host->recovered, piped);
2.18 eric 689:
690: /*
691: ** Unregister this host for all events
692: */
693: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
694: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
695: host->registeredFor = 0;
696:
697: /*
698: ** Set new mode to single until we know what is going on
699: */
700: host->mode = HT_TP_SINGLE;
701:
702: /*
703: ** Move all net objects from the net object to the pending queue.
704: */
705: if (!host->pending) host->pending = HTList_new();
706: for (cnt=0; cnt<piped; cnt++) {
707: HTNet * net = HTList_removeLastObject(host->pipeline);
708: if (CORE_TRACE) HTTrace("Host recover Resetting net object %p\n", net);
709: net->registeredFor = 0;
710: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, HTEvent_RESET);
711: HTList_appendObject(host->pending, net);
712: }
713: HTChannel_setSemaphore(host->channel, 0);
714: HTHost_clearChannel(host, HT_INTERRUPTED);
715: }
2.24 frystyk 716: #if 0
717: /*
718: ** We don't wanna change state here
719: */
2.18 eric 720: return HTHost_launchPending(host);
2.24 frystyk 721: #else
722: return YES;
723: #endif
2.18 eric 724: }
725: return NO;
726: }
727:
728: /*
2.8 frystyk 729: ** Handle the connection mode. The mode may change mode in the
730: ** middle of a connection.
731: */
732: PUBLIC HTTransportMode HTHost_mode (HTHost * host, BOOL * active)
733: {
734: return host ? host->mode : HT_TP_SINGLE;
735: }
736:
737: /*
738: ** If the new mode is lower than the old mode then adjust the pipeline
739: ** accordingly. That is, if we are going into single mode then move
740: ** all entries in the pipeline and move the rest to the pending
741: ** queue. They will get launched at a later point in time.
742: */
743: PUBLIC BOOL HTHost_setMode (HTHost * host, HTTransportMode mode)
744: {
745: if (host) {
746: /*
747: ** Check the new mode and see if we must adjust the queues.
748: */
749: if (mode == HT_TP_SINGLE && host->mode > mode) {
750: int piped = HTList_count(host->pipeline);
751: if (piped > 0) {
752: int cnt;
753: if (CORE_TRACE)
754: HTTrace("Host info... Moving %d Net objects from pipe line to pending queue\n", piped);
755: if (!host->pending) host->pending = HTList_new();
756: for (cnt=0; cnt<piped; cnt++) {
2.18 eric 757: HTNet * net = HTList_removeLastObject(host->pipeline);
758: if (CORE_TRACE) HTTrace("Host info... Resetting net object %p\n", net);
2.13 frystyk 759: (*net->event.cbf)(HTChannel_socket(host->channel), net->event.param, HTEvent_RESET);
2.8 frystyk 760: HTList_appendObject(host->pending, net);
761: }
2.18 eric 762: HTChannel_setSemaphore(host->channel, 0);
763: HTHost_clearChannel(host, HT_INTERRUPTED);
2.8 frystyk 764: }
2.24 frystyk 765: }
766:
767: /*
768: ** If we know that this host is bad then we don't allow anything than
769: ** single mode. We can't recover connections for the rest of our life
770: */
771: if (mode == HT_TP_PIPELINE && host->recovered > MAX_HOST_RECOVER) {
772: if (PROT_TRACE)
773: HTTrace("Host info... %p is bad for pipelining so we won't do it!!!\n",
774: host);
775: } else {
776: host->mode = mode;
777: if (PROT_TRACE)
778: HTTrace("Host info... New mode is %d for host %p\n", host->mode, host);
779: }
2.8 frystyk 780: }
781: return NO;
782: }
783:
784: /*
785: ** Check whether a host is idle meaning if it is ready for a new
786: ** request which depends on the mode of the host. If the host is
787: ** idle, i.e. ready for use then return YES else NO. If the host supports
788: ** persistent connections then still only return idle if no requests are
789: ** ongoing.
790: */
791: PUBLIC BOOL HTHost_isIdle (HTHost * host)
792: {
793: return (host && HTList_count(host->pipeline) <= 0);
794: }
795:
2.13 frystyk 796: PRIVATE BOOL _roomInPipe (HTHost * host)
797: {
798: int count;
799: if (!host) return NO;
2.22 eric 800: if (host->reqsPerConnection && host->reqsMade >= host->reqsPerConnection)
801: return 0;
2.13 frystyk 802: count = HTList_count(host->pipeline);
803: switch (host->mode) {
804: case HT_TP_SINGLE:
805: return count <= 0;
806: case HT_TP_PIPELINE:
807: return count < MAX_PIPES;
808: case HT_TP_INTERLEAVE:
809: return YES;
810: }
811: return NO;
812: }
813:
2.8 frystyk 814: /*
815: ** Add a net object to the host object. If the host
816: ** is idle then add to active list (pipeline) else add
817: ** it to the pending list
818: ** Return HT_PENDING if we must pend, HT_OK, or HT_ERROR
819: */
820: PUBLIC int HTHost_addNet (HTHost * host, HTNet * net)
821: {
822: if (host && net) {
823: int status = HT_OK;
824:
2.18 eric 825: /*
826: ** If we don't have a socket already then check to see if we can get
827: ** one. Otherwise we put the host object into our pending queue.
828: */
829: if (!host->channel && HTNet_availableSockets() <= 0) {
2.8 frystyk 830: if (!PendHost) PendHost = HTList_new();
831: if (CORE_TRACE)
832: HTTrace("Host info... Add Host %p as pending\n", host);
833: HTList_addObject(PendHost, host);
834: status = HT_PENDING;
835: }
836:
2.18 eric 837: /*
838: ** Add net object to either active or pending queue.
839: */
2.13 frystyk 840: if (_roomInPipe(host)) {
2.8 frystyk 841: if (CORE_TRACE) HTTrace("Host info... Add Net %p to pipeline of host %p\n", net, host);
842: if (!host->pipeline) host->pipeline = HTList_new();
843: HTList_addObject(host->pipeline, net);
2.18 eric 844:
2.13 frystyk 845: /*
846: ** Send out the request if we're not blocked on write
847: */
2.23 eric 848: #if 0
2.13 frystyk 849: if (!(host->registeredFor & HTEvent_BITS(HTEvent_WRITE)))
850: status = HTHost_launchPending(host) == YES ? HT_OK : HT_ERROR;
2.23 eric 851: #endif
2.8 frystyk 852: } else {
853: if (CORE_TRACE) HTTrace("Host info... Add Net %p as pending\n", net);
854: if (!host->pending) host->pending = HTList_new();
855: HTList_addObject(host->pending, net);
856: status = HT_PENDING;
857: }
858: return status;
859: }
860: return HT_ERROR;
861: }
862:
2.13 frystyk 863: PUBLIC BOOL HTHost_free (HTHost * host, int status)
864: {
865: if (host->channel == NULL) return NO;
2.25 frystyk 866: #if 0
2.23 eric 867: if (host->persistent && !(host->reqsMade >= host->reqsPerConnection && HTList_count(host->pipeline) <= 1))
2.25 frystyk 868: #else
869: /* Check this with FTP as well */
870: if (host->persistent &&
871: (!host->reqsPerConnection ||
872: (host->reqsPerConnection && host->reqsMade < host->reqsPerConnection)))
873: #endif
2.23 eric 874: {
2.13 frystyk 875: if (CORE_TRACE)
876: HTTrace("Host Object. keeping socket %d\n", HTChannel_socket(host->channel));
877: HTChannel_delete(host->channel, status);
878: } else {
879: if (CORE_TRACE)
880: HTTrace("Host Object. closing socket %d\n", HTChannel_socket(host->channel));
881:
882: /*
883: ** By lowering the semaphore we make sure that the channel
884: ** is gonna be deleted
885: */
2.23 eric 886: #if 1
887: HTChannel_downSemaphore(host->channel);
888: HTHost_clearChannel(host, status);
889: #else
2.13 frystyk 890: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
891: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
892: host->registeredFor = 0;
893: HTChannel_downSemaphore(host->channel);
894: HTChannel_delete(host->channel, status);
895: host->channel = NULL;
2.22 eric 896: host->tcpstate = TCP_BEGIN;
2.23 eric 897: #endif
2.13 frystyk 898: }
899: return YES;
900: }
901:
2.8 frystyk 902: PUBLIC BOOL HTHost_deleteNet (HTHost * host, HTNet * net)
903: {
904: if (host && net) {
905: if (CORE_TRACE)
906: HTTrace("Host info... Remove Net %p from pipe line\n", net);
907: HTList_removeObject(host->pipeline, net);
908: HTList_removeObject(host->pending, net);
909: return YES;
910: }
911: return NO;
912: }
913:
914: /*
915: ** Handle pending host objects.
916: ** There are two ways we can end up with pending reqyests:
917: ** 1) If we are out of sockets then register new host objects as pending.
918: ** 2) If we are pending on a connection then register new net objects as
919: ** pending
920: ** This set of functions handles pending host objects and can start new
921: ** requests as resources get available
922: */
923:
924: /*
925: ** Check this host object for any pending requests and return the next
926: ** registered Net object.
927: */
928: PUBLIC HTNet * HTHost_nextPendingNet (HTHost * host)
929: {
930: HTNet * net = NULL;
931: if (host && host->pending && host->pipeline) {
2.18 eric 932: /*JK 23/Sep/96 Bug correction. Associated the following lines to the
933: **above if. There was a missing pair of brackets.
934: */
935: if ((net = (HTNet *) HTList_removeFirstObject(host->pending)) != NULL) {
936: if (PROT_TRACE)
937: HTTrace("Host info... Popping %p from pending net queue\n", net);
2.22 eric 938: /* HTList_addObject(host->pipeline, net); */
2.18 eric 939: }
2.8 frystyk 940: }
941: return net;
942: }
943:
944: /*
2.13 frystyk 945: ** Return the current list of pending host objects waiting for a socket
2.8 frystyk 946: */
947: PUBLIC HTHost * HTHost_nextPendingHost (void)
948: {
949: HTHost * host = NULL;
950: if (PendHost) {
951: if ((host = (HTHost *) HTList_removeFirstObject(PendHost)) != NULL)
952: if (PROT_TRACE)
953: HTTrace("Host info... Poping %p from pending host queue\n",
954: host);
955: }
956: return host;
957: }
958:
959: /*
960: ** Start the next pending request if any. First we look for pending
961: ** requests for the same host and then we check for any other pending
962: ** hosts
963: */
964: PUBLIC BOOL HTHost_launchPending (HTHost * host)
965: {
966: int available = HTNet_availableSockets();
967:
968: if (!host) {
969: if (PROT_TRACE) HTTrace("Host info... Bad arguments\n");
970: return NO;
971: }
972:
973: /*
974: ** Check if we do have resources available for a new request
975: ** This can either be reusing an existing connection or opening a new one
976: */
977: if (available > 0 || host->mode >= HT_TP_PIPELINE) {
2.23 eric 978: HTNet * net;
2.8 frystyk 979:
980: /*
2.13 frystyk 981: ** In pipeline we can only have one doing writing at a time.
982: ** We therefore check that there are no other Net object
983: ** registered for write
984: */
985: if (host->mode == HT_TP_PIPELINE) {
2.23 eric 986: net = (HTNet *) HTList_lastObject(host->pipeline);
987: if (net && net->registeredFor == HTEvent_WRITE)
2.13 frystyk 988: return NO;
989: }
990:
991: /*
992: ** Check the current Host object for pending Net objects
2.23 eric 993: **
994: ** Send out as many as will fit in pipe.
2.8 frystyk 995: */
2.23 eric 996: while (_roomInPipe(host) && (net = HTHost_nextPendingNet(host))) {
997: int status = HTNet_execute(net, HTEvent_WRITE);
998: if (status != HT_OK)
999: return status;
2.8 frystyk 1000: }
1001:
1002: /*
1003: ** Check for other pending Host objects
1004: */
1005: {
1006: HTHost * pending = HTHost_nextPendingHost();
1007: if (pending) {
1008: HTNet * net = HTHost_nextPendingNet(pending);
2.13 frystyk 1009: if (net) return HTNet_execute(net, HTEvent_WRITE);
2.8 frystyk 1010: }
1011: }
2.13 frystyk 1012: } else
1013: if (PROT_TRACE) HTTrace("Host info... No more requests.\n");
1014: return NO;
1015: }
1016:
1017: PUBLIC HTNet * HTHost_firstNet (HTHost * host)
1018: {
1019: return (HTNet *) HTList_firstObject(host->pipeline);
1020: }
1021:
1022: /*
1023: ** The host event manager keeps track of the state of it's client engines
1024: ** (typically HTTPEvent), accepting multiple blocks on read or write from
1025: ** multiple pipelined engines. It then registers its own engine
1026: ** (HostEvent) with the event manager.
1027: */
1028: PUBLIC int HTHost_connect (HTHost * host, HTNet * net, char * url, HTProtocolId port)
1029: {
1030: int status;
2.18 eric 1031: /* if (host && host->connecttime)
2.13 frystyk 1032: return HT_OK;
2.18 eric 1033: */
2.13 frystyk 1034: status = HTDoConnect(net, url, port);
2.22 eric 1035: if (status == HT_OK) {
1036: HTNet_host(net)->reqsMade++; /* @@@ - what if there's a connect but no req sent? */
2.13 frystyk 1037: return HT_OK;
2.22 eric 1038: }
2.13 frystyk 1039: if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1040: return HT_WOULD_BLOCK;
1041: return HT_ERROR; /* @@@ - some more deletion and stuff here? */
1042: }
1043:
1044: /*
1045: ** Rules: SINGLE: one element in pipe, either reading or writing
1046: ** PIPE: n element in pipe, n-1 reading, 1 writing
1047: */
1048: PUBLIC int HTHost_register (HTHost * host, HTNet * net, HTEventType type)
1049: {
1050: if (host && net) {
1051:
2.28 frystyk 1052: if (type == HTEvent_CLOSE) {
2.13 frystyk 1053:
2.28 frystyk 1054: /*
1055: ** Unregister this host for all events
1056: */
1057: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_READ);
1058: HTEvent_unregister(HTChannel_socket(host->channel), HTEvent_WRITE);
1059: host->registeredFor = 0;
2.13 frystyk 1060: return YES;
2.28 frystyk 1061:
1062: } else {
1063:
1064: /* net object may already be registered */
1065: if (HTEvent_BITS(type) & net->registeredFor)
1066: return NO;
1067: net->registeredFor ^= HTEvent_BITS(type);
1068:
1069: /* host object may already be registered */
1070: if (host->registeredFor & HTEvent_BITS(type))
1071: return YES;
1072: host->registeredFor ^= HTEvent_BITS(type);
1073: return HTEvent_register(HTChannel_socket(host->channel),
1074: type, *(host->events+HTEvent_INDEX(type)));
1075: }
2.13 frystyk 1076: }
1077: return NO;
1078: }
1079:
1080: PUBLIC int HTHost_unregister (HTHost * host, HTNet * net, HTEventType type)
1081: {
1082: if (host && net) {
1083:
2.28 frystyk 1084: /* net object may not be registered */
2.13 frystyk 1085: if (!(HTEvent_BITS(type) & net->registeredFor))
1086: return NO;
1087: net->registeredFor ^= HTEvent_BITS(type);
1088:
2.28 frystyk 1089: /* host object may not be registered */
2.13 frystyk 1090: if (!(host->registeredFor & HTEvent_BITS(type)))
1091: return YES;
1092: host->registeredFor ^= HTEvent_BITS(type);
1093:
1094: /* stay registered for READ to catch a socket close */
1095: /* WRITE and CONNECT can be unregistered, though */
1096: if ((type == HTEvent_WRITE && isLastInPipe(host, net)) ||
1097: type == HTEvent_CONNECT)
1098: /* if we are blocked downstream, shut down the whole pipe */
1099: HTEvent_unregister(HTChannel_socket(host->channel), type);
1100: return YES;
1101: }
1102: return NO;
1103: }
1104:
1105: /*
1106: ** The reader tells HostEvent that it's stream did not finish the data
1107: */
1108: PUBLIC BOOL HTHost_setRemainingRead (HTHost * host, size_t remaining)
1109: {
1110: if (host == NULL) return NO;
1111: host->remainingRead = remaining;
2.20 frystyk 1112: if (PROT_TRACE) HTTrace("Host........ %d bytes remaining \n", remaining);
2.13 frystyk 1113: return YES;
1114: }
1115:
1116: PUBLIC SockA * HTHost_getSockAddr (HTHost * host)
1117: {
1118: if (!host) return NULL;
1119: return &host->sock_addr;
1120: }
1121:
1122: PUBLIC BOOL HTHost_setHome (HTHost * host, int home)
1123: {
1124: if (!host) return NO;
1125: host->home = home;
1126: return YES;
1127: }
1128:
1129: PUBLIC int HTHost_home (HTHost * host)
1130: {
1131: if (!host) return 0;
1132: return host->home;
1133: }
1134:
2.27 frystyk 1135: PUBLIC BOOL HTHost_setRetry (HTHost * host, int retry)
1136: {
1137: if (!host) return NO;
1138: host->retry = retry;
1139: return YES;
1140: }
1141:
1142: PUBLIC BOOL HTHost_decreaseRetry (HTHost * host)
1143: {
1144: if (!host) {
1145: if (host->retry > 0) host->retry--;
1146: return YES;
1147: }
1148: return NO;
1149: }
1150:
1151: PUBLIC int HTHost_retry (HTHost * host)
1152: {
1153: if (!host) return 0;
1154: return host->retry;
1155: }
1156:
2.13 frystyk 1157: #if 0 /* Is a macro right now */
2.21 frystyk 1158: PRIVATE BOOL HTHost_setDNS5 (HTHost * host, HTdns * dns)
2.13 frystyk 1159: {
1160: if (!host) return NO;
1161: host->dns = dns;
1162: return YES;
1163: }
1164: #endif
1165:
1166: PUBLIC BOOL HTHost_setChannel (HTHost * host, HTChannel * channel)
1167: {
1168: if (!host) return NO;
1169: host->channel = channel;
1170: return YES;
1171: }
1172:
1173: PUBLIC HTNet * HTHost_getReadNet(HTHost * host)
1174: {
1175: if (host) {
1176: if (host->mode == HT_TP_INTERLEAVE) {
2.21 frystyk 1177: #ifdef HT_MUX
2.13 frystyk 1178: HTMuxChannel * muxch = HTMuxChannel_find(host);
1179: return HTMuxChannel_net(muxch);
2.21 frystyk 1180: #endif
2.13 frystyk 1181: }
1182: return (HTNet *) HTList_firstObject(host->pipeline);
1183: }
1184: return NULL;
1185: }
1186:
1187: PUBLIC HTNet * HTHost_getWriteNet(HTHost * host)
1188: {
1189: return host ? (HTNet *) HTList_lastObject(host->pipeline) : NULL;
1190: }
1191:
1192: /*
1193: ** Create the input stream and bind it to the channel
1194: ** Please read the description in the HTIOStream module for the parameters
1195: */
1196: PUBLIC HTInputStream * HTHost_getInput (HTHost * host, HTTransport * tp,
1197: void * param, int mode)
1198: {
1199: if (host && host->channel && tp) {
1200: HTChannel * ch = host->channel;
1201: HTInputStream * input = (*tp->input_new)(host, ch, param, mode);
1202: HTChannel_setInput(ch, input);
1203: return HTChannel_getChannelIStream(ch);
1204: }
2.24 frystyk 1205: if (CORE_TRACE) HTTrace("Host Object. Can't create input stream\n");
2.13 frystyk 1206: return NULL;
1207: }
1208:
1209: PUBLIC HTOutputStream * HTHost_getOutput (HTHost * host, HTTransport * tp,
1210: void * param, int mode)
1211: {
1212: if (host && host->channel && tp) {
1213: HTChannel * ch = host->channel;
1214: HTOutputStream * output = (*tp->output_new)(host, ch, param, mode);
1215: HTChannel_setOutput(ch, output);
1216: return output;
1217: }
2.24 frystyk 1218: if (CORE_TRACE) HTTrace("Host Object. Can't create output stream\n");
2.13 frystyk 1219: return NULL;
1220: }
1221:
1222: PUBLIC HTOutputStream * HTHost_output (HTHost * host, HTNet * net)
1223: {
1224: if (host && host->channel && net) {
1225: HTOutputStream * output = HTChannel_output(host->channel);
2.8 frystyk 1226:
1227: /*
2.13 frystyk 1228: ** If we are in MUX mode then create new output stream on top
1229: ** of the already existing one. Otherwise just return what we
1230: ** have.
2.8 frystyk 1231: */
2.13 frystyk 1232: if (host->mode == HT_TP_INTERLEAVE) {
2.21 frystyk 1233: #ifdef HT_MUX
2.13 frystyk 1234: HTStream * target = (HTStream *) HTChannel_output(host->channel);
1235: output = HTMuxWriter_new(host, net, target);
2.21 frystyk 1236: #endif
2.8 frystyk 1237: }
2.13 frystyk 1238: return output;
1239: }
1240: return NULL;
1241: }
1242:
1243: PUBLIC int HTHost_read(HTHost * host, HTNet * net)
1244: {
1245: HTInputStream * input = HTChannel_input(host->channel);
1246: if (net != HTHost_getReadNet(host)) {
1247: HTHost_register(host, net, HTEvent_READ);
1248: return HT_WOULD_BLOCK;
1249: }
2.17 frystyk 1250:
1251: /*
1252: ** If there is no input channel then this can either mean that
1253: ** we have lost the channel or an error occurred. We return
1254: ** HT_CLOSED as this is a sign to the caller that we don't
1255: ** have a channel
1256: */
1257: return input ? (*input->isa->read)(input) : HT_CLOSED;
2.13 frystyk 1258: }
1259:
1260: PUBLIC BOOL HTHost_setConsumed(HTHost * host, size_t bytes)
1261: {
1262: HTInputStream * input;
1263: if (!host || !host->channel) return NO;
1264: if ((input = HTChannel_input(host->channel)) == NULL)
1265: return NO;
2.20 frystyk 1266: if (PROT_TRACE)
1267: HTTrace("Host........ passing %d bytes as consumed to %p\n", bytes, input);
2.13 frystyk 1268: return (*input->isa->consumed)(input, bytes);
1269: }
1270:
1271: PUBLIC int HTHost_hash (HTHost * host)
1272: {
1273: return host ? host->hash : -1;
1274: }
1275:
2.26 frystyk 1276: PUBLIC BOOL HTHost_setWriteDelay (HTHost * host, ms_t delay)
2.13 frystyk 1277: {
2.26 frystyk 1278: if (host && delay >= 0) {
1279: host->delay = delay;
1280: return YES;
1281: }
1282: return NO;
1283: }
1284:
1285: PUBLIC ms_t HTHost_writeDelay (HTHost * host)
1286: {
1287: return host ? host->delay : 0;
1288: }
1289:
1290: PUBLIC int HTHost_findWriteDelay (HTHost * host, ms_t lastFlushTime, int buffSize)
1291: {
2.15 eric 1292: unsigned short mtu;
2.18 eric 1293: int ret = -1;
2.15 eric 1294: int socket = HTChannel_socket(host->channel);
2.18 eric 1295: #ifndef WWW_MSWINDOWS
2.15 eric 1296: ret = ioctl(socket, 666, (unsigned long)&mtu);
2.18 eric 1297: #endif /* WWW_MSWINDOWS */
2.15 eric 1298: if ((ret == 0 && buffSize >= mtu) || host->forceWriteFlush)
2.13 frystyk 1299: return 0;
2.26 frystyk 1300: return host->delay;
2.13 frystyk 1301: }
1302:
2.26 frystyk 1303: PUBLIC BOOL HTHost_setDefaultWriteDelay (ms_t delay)
1304: {
1305: if (delay >= 0) {
1306: WriteDelay = delay;
1307: if (CORE_TRACE) HTTrace("Host........ Default write delay is %d ms\n", delay);
1308: return YES;
1309: }
1310: return NO;
1311: }
1312:
1313: PUBLIC ms_t HTHost_defaultWriteDelay (void)
1314: {
1315: return WriteDelay;
1316: }
1317:
2.13 frystyk 1318: PUBLIC int HTHost_forceFlush(HTHost * host)
1319: {
1320: HTNet * targetNet = (HTNet *)HTList_lastObject(host->pipeline);
1321: int wasForced = host->forceWriteFlush;
1322: int ret;
1323: if (targetNet == NULL)
1324: return HT_ERROR;
1325: if (CORE_TRACE)
2.28 frystyk 1326: HTTrace("Host Event.. FLUSH passed to `%s\'\n",
1327: HTAnchor_physical(HTRequest_anchor(HTNet_request(targetNet))));
2.13 frystyk 1328: host->forceWriteFlush = YES;
1329: ret = (*targetNet->event.cbf)(HTChannel_socket(host->channel), targetNet->event.param, HTEvent_FLUSH);
1330: host->forceWriteFlush = wasForced;
1331: return ret;
2.1 frystyk 1332: }
2.11 kahan 1333:
2.13 frystyk 1334: PUBLIC int HTHost_eventTimeout (void)
1335: {
1336: return EventTimeout;
1337: }
2.11 kahan 1338:
2.13 frystyk 1339: PUBLIC void HTHost_setEventTimeout (int millis)
1340: {
1341: EventTimeout = millis;
1342: if (CORE_TRACE) HTTrace("Host........ Setting event timeout to %d ms\n", millis);
1343: }
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