Annotation of libwww/Library/src/HTTCP.c, revision 2.103
2.31 frystyk 1: /* HTTCP.c
2.83 frystyk 2: ** TCP SPECIFIC CODE
2.31 frystyk 3: **
2.42 frystyk 4: ** (c) COPYRIGHT MIT 1995.
2.31 frystyk 5: ** Please first read the full copyright statement in the file COPYRIGH.
2.103 ! frystyk 6: ** @(#) $Id: HTTCP.c,v 2.102 1997/02/04 16:04:41 frystyk Exp $
1.1 timbl 7: **
8: ** This code is in common between client and server sides.
9: **
10: ** 16 Jan 92 TBL Fix strtol() undefined on CMU Mach.
11: ** 25 Jun 92 JFG Added DECNET option through TCP socket emulation.
2.7 duns 12: ** 13 Sep 93 MD Added correct return of vmserrorno for HTInetStatus.
13: ** Added decoding of vms error message for MULTINET.
2.13 frystyk 14: ** 31 May 94 HF Added cache on host id's; now use inet_ntoa() to
15: ** HTInetString and some other fixes. Added HTDoConnect
16: ** and HTDoAccept
1.1 timbl 17: */
18:
2.36 frystyk 19: /* Library include files */
2.79 frystyk 20: #include "sysdep.h"
2.83 frystyk 21: #include "WWWUtil.h"
22: #include "WWWCore.h"
2.95 frystyk 23: #include "WWWMux.h"
2.83 frystyk 24:
2.58 frystyk 25: #include "HTReqMan.h"
2.54 frystyk 26: #include "HTNetMan.h"
2.36 frystyk 27: #include "HTTCP.h" /* Implemented here */
2.29 frystyk 28:
2.95 frystyk 29: #include "HTHstMan.h"
30:
2.36 frystyk 31: /* VMS stuff */
32: #ifdef VMS
33: #ifndef MULTINET
34: #define FD_SETSIZE 32
35: #else /* Multinet */
36: #define FD_SETSIZE 256
37: #endif /* Multinet */
38: #endif /* VMS */
39:
2.13 frystyk 40: /* Macros and other defines */
2.24 frystyk 41: /* x seconds penalty on a multi-homed host if IP-address is down */
42: #define TCP_PENALTY 1200
43:
44: /* x seconds penalty on a multi-homed host if IP-address is timed out */
45: #define TCP_DELAY 600
46:
2.93 eric 47: /* imperical study in socket call error codes
48: */
49: #ifdef _WINSOCKAPI_ /* windows */
50: #define NETCALL_ERROR(ret) (ret == SOCKET_ERROR)
51: #define NETCALL_DEADSOCKET(err) (err == WSAEBADF)
52: #define NETCALL_WOULDBLOCK(err) (err == WSAEWOULDBLOCK)
53: #else /* _WINSOCKAPI_ unix */
54: #define NETCALL_ERROR(ret) (ret < 0)
55: #define NETCALL_DEADSOCKET(err) (err == EBADF)
56: #if defined(EAGAIN) && defined(EALREADY)
57: #define NETCALL_WOULDBLOCK(err) (err == EINPROGRESS || \
58: err == EALREADY || \
59: err == EAGAIN)
60: #else /* (EAGAIN && EALREADY) */
61: #ifdef EALREADY
62: #define NETCALL_WOULDBLOCK(err) (err == EINPROGRESS || err == EALREADY)
63: #else /* EALREADY */
64: #ifdef EAGAIN
65: #define NETCALL_WOULDBLOCK(err) (err == EINPROGRESS || err == EAGAIN)
66: #else /* EAGAIN */
67: #define NETCALL_WOULDBLOCK(err) (err == EINPROGRESS)
68: #endif /* !EAGAIN */
69: #endif /* !EALREADY */
70: #endif /* !(EAGAIN && EALREADY) */
71: #endif /* !_WINSOCKAPI_ done */
2.13 frystyk 72: /* ------------------------------------------------------------------------- */
2.19 frystyk 73: /* CONNECTION ESTABLISHMENT MANAGEMENT */
74: /* ------------------------------------------------------------------------- */
2.13 frystyk 75:
2.95 frystyk 76: /* _makeSocket - create a socket, if !preemptive, set FIONBIO
2.93 eric 77: * returns 1: blocking
78: * 0: non-blocking
79: * -1: creation error
80: */
2.95 frystyk 81: PRIVATE int _makeSocket(HTHost * host, HTRequest * request, int preemptive, HTTransport * transport)
2.93 eric 82: {
2.95 frystyk 83: int status = 1;
84: SOCKET sockfd;
2.93 eric 85: #ifdef DECNET
2.95 frystyk 86: if ((sockfd=socket(AF_DECnet, SOCK_STREAM, 0))==INVSOC)
2.93 eric 87: #else
2.95 frystyk 88: if ((sockfd=socket(AF_INET, SOCK_STREAM,IPPROTO_TCP))==INVSOC)
2.93 eric 89: #endif
2.95 frystyk 90: {
91: HTRequest_addSystemError(request, ERR_FATAL, socerrno,
92: NO, "socket");
93: host->tcpstate = TCP_ERROR;
94: return -1;
95: }
96: if (PROT_TRACE) HTTrace(HTHIDE("Socket...... Created %d\n"), sockfd);
2.93 eric 97:
2.95 frystyk 98: /* Increase the number of sockets by one */
99: HTNet_increaseSocket();
2.97 frystyk 100:
101: /*
102: ** If we have compiled without Nagle's algorithm then try and turn
103: ** it off now
104: */
105: #ifdef HT_NO_NAGLE
106: {
107: int disable = 1;
2.101 frystyk 108: status = setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY,
109: (char *) &disable, sizeof(int));
2.97 frystyk 110: if (status == -1) {
111: if (PROT_TRACE)
112: HTTrace("Socket...... Could not disable Nagle's algorithm - error %d\n",
113: sockfd);
114: } else {
115: if (PROT_TRACE) HTTrace("Socket...... Turned off Nagle's algorithm\n");
116: }
117: }
118: #endif
2.93 eric 119:
2.95 frystyk 120: /* If non-blocking protocol then change socket status
121: ** I use fcntl() so that I can ask the status before I set it.
122: ** See W. Richard Stevens (Advan. Prog. in UNIX environment, p.364)
123: ** Be CAREFULL with the old `O_NDELAY' - it will not work as read()
124: ** returns 0 when blocking and NOT -1. FNDELAY is ONLY for BSD and
125: ** does NOT work on SVR4 systems. O_NONBLOCK is POSIX.
126: */
127: if (!preemptive) {
2.93 eric 128: #ifdef _WINSOCKAPI_
2.95 frystyk 129: { /* begin windows scope */
130: long levents = FD_READ | FD_WRITE | FD_ACCEPT |
131: FD_CONNECT | FD_CLOSE ;
132: int rv = 0 ;
133: u_long one = 1;
134:
135: status = ioctlsocket(sockfd, FIONBIO, &one) ==
136: SOCKET_ERROR ? -1 : 0;
137: } /* end scope */
2.93 eric 138: #else /* _WINSOCKAPI_ */
139: #if defined(VMS)
2.95 frystyk 140: {
141: int enable = 1;
142: status = IOCTL(sockfd, FIONBIO, &enable);
143: }
2.93 eric 144: #else /* VMS */
2.95 frystyk 145: if((status = fcntl(sockfd, F_GETFL, 0)) != -1) {
2.93 eric 146: #ifdef O_NONBLOCK
2.95 frystyk 147: status |= O_NONBLOCK; /* POSIX */
2.93 eric 148: #else /* O_NONBLOCK */
149: #ifdef F_NDELAY
150: status |= F_NDELAY; /* BSD */
151: #endif /* F_NDELAY */
152: #endif /* !O_NONBLOCK */
2.95 frystyk 153: status = fcntl(sockfd, F_SETFL, status);
154: }
2.93 eric 155: #endif /* !VMS */
156: #endif /* !_WINSOCKAPI_ */
2.95 frystyk 157: if (PROT_TRACE) HTTrace(HTHIDE("Socket...... %slocking socket\n"), status == -1 ? "B" : "Non-b");
158: } else
159: if (PROT_TRACE) HTTrace(HTHIDE("Socket...... Blocking socket\n"));
160:
161: /*
162: ** Associate the channel with the host and create an input and and output stream
163: ** for this host/channel
164: */
2.103 ! frystyk 165: HTHost_setChannel(host, HTChannel_new(sockfd, NULL, YES));
2.95 frystyk 166: HTHost_getInput(host, transport, NULL, 0);
167: HTHost_getOutput(host, transport, NULL, 1024);
2.93 eric 168:
169: return status == -1 ? 1 : 0;
170: }
171:
2.13 frystyk 172: /* HTDoConnect()
173: **
174: ** Note: Any port indication in URL, e.g., as `host:port' overwrites
2.54 frystyk 175: ** the default port value.
2.13 frystyk 176: **
2.40 frystyk 177: ** returns HT_ERROR Error has occured or interrupted
178: ** HT_OK if connected
179: ** HT_WOULD_BLOCK if operation would have blocked
2.13 frystyk 180: */
2.54 frystyk 181: PUBLIC int HTDoConnect (HTNet * net, char * url, u_short default_port)
2.13 frystyk 182: {
2.95 frystyk 183: HTHost * me = HTNet_host(net);
2.88 frystyk 184: HTRequest * request = HTNet_request(net);
2.95 frystyk 185: int preemptive = net->preemptive;
186: int status = HT_OK;
187: char * hostname = HTHost_name(me);
2.13 frystyk 188:
2.55 frystyk 189: /* Jump into the state machine */
2.100 eric 190: if (!me) {
191: char * proxy = HTRequest_proxy(request);
192: HTProtocol * protocol = HTNet_protocol(net);
193:
194: /* Check to see whether we connect directly or via a proxy */
195: if ((me = HTHost_newWParse(request, proxy ? proxy : url,
196: HTProtocol_id(protocol))) == NULL)
197: return NO;
198:
199: net->host = me;
200: }
2.55 frystyk 201: while (1) {
2.95 frystyk 202: switch (me->tcpstate) {
2.55 frystyk 203: case TCP_BEGIN:
2.91 frystyk 204: {
205: /*
206: ** Add the net object to the host object found above. If the
207: ** host is idle then we can start the request right away,
208: ** otherwise we must wait until it is free.
209: */
2.98 frystyk 210: if ((status = HTHost_addNet(net->host, net)) == HT_PENDING)
211: if (PROT_TRACE) HTTrace("HTDoConnect. Pending...\n");
2.91 frystyk 212:
213: /*
2.95 frystyk 214: ** If we are pending then return here, otherwise go to next state
2.91 frystyk 215: ** which is setting up a channel
216: */
2.95 frystyk 217: me->tcpstate = TCP_CHANNEL;
218: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_CHANNEL.\n"), me);
2.91 frystyk 219: if (status == HT_PENDING) return HT_PENDING;
220: }
221: break;
2.83 frystyk 222:
2.91 frystyk 223: case TCP_CHANNEL:
2.83 frystyk 224: /*
2.91 frystyk 225: ** The next state depends on whether we have a connection
226: ** or not - if so then we can jump directly to connect() to
227: ** test it - otherwise we must around DNS to get the name
2.93 eric 228: ** Resolved
2.83 frystyk 229: */
2.95 frystyk 230: if (HTHost_channel(me) == NULL) {
231: me->tcpstate = TCP_DNS;
232: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_DNS.\n"), me);
233: } else {
234:
235: /*
236: ** Get a new session on the MUX layer - we already have a
237: ** connection.
238: */
239: #ifdef HT_MUX
240: HTMuxChannel * muxch = HTMuxChannel_find(me);
241: HTProtocol * protocol = HTNet_protocol(net);
242: net->session = HTMuxSession_connect(muxch, net, HTProtocol_id(protocol));
243: #endif /* HT_MUX */
244:
245: /*
246: ** There is now one more using the channel
247: */
248: HTChannel_upSemaphore(me->channel);
249:
250: /*
251: ** We are now all set and can jump to connected mode
252: */
253: me->tcpstate = TCP_CONNECTED;
254: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_CONNECTED.\n"), me);
255: }
256: hostname = HTHost_name(me);
2.55 frystyk 257: break;
258:
2.91 frystyk 259: case TCP_DNS:
2.95 frystyk 260: if ((status = HTParseInet(me, hostname, request)) < 0) {
261: if (PROT_TRACE) HTTrace(HTHIDE("HTDoConnect. Can't locate `%s\'\n"), hostname);
2.91 frystyk 262: HTRequest_addError(request, ERR_FATAL, NO,
263: HTERR_NO_REMOTE_HOST,
264: (void *) hostname, strlen(hostname),
265: "HTDoConnect");
2.95 frystyk 266: me->tcpstate = TCP_ERROR;
267: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_ERROR.\n"), me);
2.27 frystyk 268: break;
2.55 frystyk 269: }
2.102 frystyk 270: if (!HTHost_retry(me) && status > 1) /* If multiple homes */
271: HTHost_setRetry(me, status);
2.95 frystyk 272: me->tcpstate = TCP_NEED_SOCKET;
273: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_NEED_SOCKET.\n"), me);
2.55 frystyk 274: break;
275:
276: case TCP_NEED_SOCKET:
2.95 frystyk 277: if (_makeSocket(me, request, preemptive, net->transport) == -1)
2.27 frystyk 278: break;
2.95 frystyk 279:
280: #ifdef HT_MUX
281: /*
282: ** Create a MUX channel and do a connect on this channel with a
283: ** new session.
284: */
285: {
286: HTProtocol * protocol = HTNet_protocol(net);
287: HTMuxChannel * muxch = HTMuxChannel_new(me);
288: net->session = HTMuxSession_connect(muxch, net, HTProtocol_id(protocol));
289: }
290: #endif /* HT_MUX */
2.83 frystyk 291:
2.27 frystyk 292: /* If multi-homed host then start timer on connection */
2.102 frystyk 293: if (HTHost_retry(me)) me->connecttime = HTGetTimeInMillis();
2.65 frystyk 294:
295: /* Progress */
296: {
297: HTAlertCallback *cbf = HTAlert_find(HT_PROG_CONNECT);
2.95 frystyk 298: if (cbf) (*cbf)(request, HT_PROG_CONNECT, HT_MSG_NULL,
2.91 frystyk 299: NULL, hostname, NULL);
2.65 frystyk 300: }
2.95 frystyk 301: me->tcpstate = TCP_NEED_CONNECT;
302: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_NEED_CONNECT.\n"), me);
2.55 frystyk 303: break;
2.56 frystyk 304: case TCP_NEED_CONNECT:
2.95 frystyk 305: status = connect(HTChannel_socket(me->channel), (struct sockaddr *) &me->sock_addr,
306: sizeof(me->sock_addr));
2.55 frystyk 307: /*
308: * According to the Sun man page for connect:
309: * EINPROGRESS The socket is non-blocking and the con-
310: * nection cannot be completed immediately.
311: * It is possible to select(2) for comple-
312: * tion by selecting the socket for writ-
313: * ing.
314: * According to the Motorola SVR4 man page for connect:
315: * EAGAIN The socket is non-blocking and the con-
316: * nection cannot be completed immediately.
317: * It is possible to select for completion
318: * by selecting the socket for writing.
319: * However, this is only possible if the
320: * socket STREAMS module is the topmost
321: * module on the protocol stack with a
322: * write service procedure. This will be
323: * the normal case.
324: */
2.93 eric 325: if (NETCALL_ERROR(status))
2.55 frystyk 326: {
2.93 eric 327: if (NETCALL_WOULDBLOCK(socerrno))
2.55 frystyk 328: {
2.95 frystyk 329: if (PROT_TRACE) HTTrace(HTHIDE("HTDoConnect. WOULD BLOCK `%s'\n"), hostname);
330: HTHost_register(me, net, HTEvent_CONNECT);
2.55 frystyk 331: return HT_WOULD_BLOCK;
332: }
333: if (socerrno == EISCONN) {
2.95 frystyk 334: me->tcpstate = TCP_CONNECTED;
335: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_CONNECTED.\n"), me);
2.55 frystyk 336: break;
337: }
2.93 eric 338: if (NETCALL_DEADSOCKET(socerrno)) /* We lost the socket */
2.58 frystyk 339: {
2.95 frystyk 340: me->tcpstate = TCP_NEED_SOCKET;
341: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_NEED_SOCKET.\n"), me);
2.55 frystyk 342: break;
2.27 frystyk 343: }
2.102 frystyk 344: if (HTHost_retry(me)) {
345: me->connecttime -= HTGetTimeInMillis();
2.54 frystyk 346: /* Added EINVAL `invalid argument' as this is what I
347: get back from a non-blocking connect where I should
348: get `connection refused' on BSD. SVR4 gives SIG_PIPE */
2.94 frystyk 349: #if defined(__svr4__) || defined (_WINSOCKAPI_)
2.55 frystyk 350: if (socerrno==ECONNREFUSED || socerrno==ETIMEDOUT ||
351: socerrno==ENETUNREACH || socerrno==EHOSTUNREACH ||
352: socerrno==EHOSTDOWN)
353: #else
2.54 frystyk 354: if (socerrno==ECONNREFUSED || socerrno==ETIMEDOUT ||
355: socerrno==ENETUNREACH || socerrno==EHOSTUNREACH ||
356: socerrno==EHOSTDOWN || socerrno==EINVAL)
2.35 roeber 357: #endif
2.95 frystyk 358: me->connecttime += TCP_DELAY;
2.54 frystyk 359: else
2.95 frystyk 360: me->connecttime += TCP_PENALTY;
2.102 frystyk 361: HTDNS_updateWeigths(me->dns, HTHost_home(me), me->connecttime);
2.55 frystyk 362: }
2.95 frystyk 363: me->tcpstate = TCP_ERROR;
364: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_ERROR.\n"), me);
365: } else {
366: me->tcpstate = TCP_CONNECTED;
367: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_CONNECTED.\n"), me);
368: }
2.55 frystyk 369: break;
370:
371: case TCP_CONNECTED:
2.95 frystyk 372: HTHost_unregister(me, net, HTEvent_CONNECT);
2.102 frystyk 373: if (HTHost_retry(me)) {
374: me->connecttime -= HTGetTimeInMillis();
375: HTDNS_updateWeigths(me->dns, HTHost_home(me), me->connecttime);
2.27 frystyk 376: }
2.102 frystyk 377: HTHost_setRetry(me, 0);
2.100 eric 378: me->tcpstate = TCP_IN_USE;
2.95 frystyk 379: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p connected.\n"), me);
2.55 frystyk 380: return HT_OK;
381: break;
2.100 eric 382:
383: /* once a host is connected, subsequent connections are immediately OK */
384: case TCP_IN_USE:
385: if ((status = HTHost_addNet(net->host, net)) == HT_PENDING) {
386: if (PROT_TRACE) HTTrace("HTDoConnect. Pending...\n");
387: return HT_PENDING;
388: }
389:
390: HTChannel_upSemaphore(me->channel);
391: return HT_OK;
2.55 frystyk 392:
2.56 frystyk 393: case TCP_NEED_BIND:
394: case TCP_NEED_LISTEN:
2.55 frystyk 395: case TCP_ERROR:
2.95 frystyk 396: HTTrace(HTHIDE("HTDoConnect. Connect failed %d\n"), socerrno);
397: if (HTChannel_socket(me->channel) != INVSOC) {
398: /* HTEvent_unregister(HTChannel_socket(me->channel), (SockOps) FD_ALL); */
399: NETCLOSE(HTChannel_socket(me->channel));
400: /* HTChannel_setSocket(me->channel, INVSOC); */
401: #if 1 /* @@@ */
402: if (HTHost_isPersistent(me)) { /* Inherited socket */
403: HTHost_setPersistent(me, NO, HT_TP_SINGLE);
404: me->tcpstate = TCP_NEED_SOCKET;
405: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_NEED_SOCKET.\n"), me);
2.55 frystyk 406: break;
407: }
2.95 frystyk 408: #endif
2.55 frystyk 409: }
410:
411: /* Do we have more homes to try? */
2.102 frystyk 412: HTHost_decreaseRetry(me);
413: if (HTHost_retry(me) > 0) {
2.65 frystyk 414: HTRequest_addSystemError(request, ERR_NON_FATAL, socerrno, NO,
2.55 frystyk 415: "connect");
2.95 frystyk 416: me->tcpstate = TCP_DNS;
417: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_DNS.\n"), me);
2.24 frystyk 418: break;
419: }
2.65 frystyk 420: HTRequest_addSystemError(request, ERR_FATAL,socerrno,NO,"connect");
2.91 frystyk 421: HTDNS_delete(hostname);
2.102 frystyk 422: HTHost_setRetry(me, 0);
2.95 frystyk 423: me->tcpstate = TCP_BEGIN;
424: if (PROT_TRACE) HTTrace(HTHIDE("HTHost %p going to state TCP_BEGIN.\n"), me);
2.55 frystyk 425: return HT_ERROR;
426: break;
2.24 frystyk 427: }
2.55 frystyk 428: }
2.13 frystyk 429: }
430:
2.56 frystyk 431: /* HTDoAccept()
432: ** ------------
433: ** This function makes a non-blocking accept which will turn up as ready
434: ** read in the select.
435: ** Returns
436: ** HT_ERROR Error has occured or interrupted
437: ** HT_OK if connected
438: ** HT_WOULD_BLOCK if operation would have blocked
2.13 frystyk 439: */
2.95 frystyk 440:
2.88 frystyk 441: PUBLIC int HTDoAccept (HTNet * net, HTNet ** accepted)
2.13 frystyk 442: {
443: int status;
2.95 frystyk 444: int size = sizeof(net->host->sock_addr);
2.88 frystyk 445: HTRequest * request = HTNet_request(net);
2.95 frystyk 446: if (!request || HTNet_socket(net)==INVSOC) {
2.77 eric 447: if (PROT_TRACE) HTTrace("HTDoAccept.. Invalid socket\n");
2.56 frystyk 448: return HT_ERROR;
2.13 frystyk 449: }
2.65 frystyk 450:
451: /* Progress report */
452: {
453: HTAlertCallback *cbf = HTAlert_find(HT_PROG_ACCEPT);
454: if (cbf) (*cbf)(request, HT_PROG_ACCEPT, HT_MSG_NULL,NULL, NULL, NULL);
455: }
2.95 frystyk 456: status = accept(HTNet_socket(net), (struct sockaddr *) &net->host->sock_addr, &size);
2.93 eric 457: if (NETCALL_ERROR(status))
2.23 duns 458: {
2.93 eric 459: if (NETCALL_WOULDBLOCK(socerrno))
2.56 frystyk 460: {
461: if (PROT_TRACE)
2.95 frystyk 462: HTTrace("HTDoAccept.. WOULD BLOCK %d\n", HTNet_socket(net));
463: HTEvent_register(HTNet_socket(net), HTEvent_ACCEPT, &net->event);
2.56 frystyk 464: return HT_WOULD_BLOCK;
465: }
2.65 frystyk 466: HTRequest_addSystemError(request, ERR_WARN, socerrno, YES, "accept");
2.77 eric 467: if (PROT_TRACE) HTTrace("HTDoAccept.. Accept failed\n");
2.56 frystyk 468: return HT_ERROR;
2.23 duns 469: }
2.71 frystyk 470:
2.88 frystyk 471: if (PROT_TRACE) HTTrace("Accepted.... socket %d\n", status);
472:
473: /*
474: ** If accepted is the same as the net obejct then reuse it, else create
475: ** a new object and leave the original alone
476: */
477: if (*accepted == net)
478: HTDoClose(net);
479: else
480: *accepted = HTNet_dup(net);
2.95 frystyk 481: HTNet_setSocket(*accepted, status);
2.83 frystyk 482:
483: /* Create a channel for the new socket */
2.95 frystyk 484: {
485: HTHost * host = (*accepted)->host;
2.103 ! frystyk 486: HTChannel * ch = HTChannel_new(HTNet_socket(*accepted), NULL, NO);
2.95 frystyk 487: #ifdef HT_MUX
488: HTMuxChannel_new(host);
489: #endif /* HT_MUX */
490: HTHost_setChannel(host, ch);
491: }
2.56 frystyk 492: return HT_OK;
493: }
494:
495:
496: /* HTDoListen
497: ** ----------
498: ** Listens on the specified port. 0 means that we chose it here
499: ** If master==INVSOC then we listen on all local interfaces (using a
500: ** wildcard). If !INVSOC then use this as the local interface
501: ** returns HT_ERROR Error has occured or interrupted
502: ** HT_OK if connected
503: */
2.67 frystyk 504: PUBLIC int HTDoListen (HTNet * net, u_short port, SOCKET master, int backlog)
2.56 frystyk 505: {
506: int status;
507:
508: /* Jump into the state machine */
509: while (1) {
2.95 frystyk 510: switch (net->host->tcpstate) {
2.56 frystyk 511: case TCP_BEGIN:
512: {
2.95 frystyk 513: SockA *sin = &net->host->sock_addr;
2.56 frystyk 514: memset((void *) sin, '\0', sizeof(SockA));
515: #ifdef DECNET
516: sin->sdn_family = AF_DECnet;
517: sin->sdn_objnum = port;
2.36 frystyk 518: #else
2.56 frystyk 519: sin->sin_family = AF_INET;
520: if (master != INVSOC) {
521: int len = sizeof(SockA);
522: if (getsockname(master, (struct sockaddr *) sin, &len)<0) {
2.65 frystyk 523: HTRequest_addSystemError(net->request, ERR_FATAL,
524: socerrno, NO, "getsockname");
2.95 frystyk 525: net->host->tcpstate = TCP_ERROR;
2.56 frystyk 526: break;
527: }
528: } else
529: sin->sin_addr.s_addr = INADDR_ANY;
530: sin->sin_port = htons(port);
531: #endif
532: }
533: if (PROT_TRACE)
2.83 frystyk 534: HTTrace("Socket...... Listen on port %d\n", port);
2.95 frystyk 535: net->host->tcpstate = TCP_NEED_SOCKET;
2.56 frystyk 536: break;
537:
538: case TCP_NEED_SOCKET:
2.95 frystyk 539: if (_makeSocket(net->host, net->request, net->preemptive, net->transport) == -1)
2.93 eric 540: break;
2.95 frystyk 541: net->host->tcpstate = TCP_NEED_BIND;
2.56 frystyk 542: break;
543:
544: case TCP_NEED_BIND:
2.95 frystyk 545: status = bind(HTNet_socket(net), (struct sockaddr *) &net->host->sock_addr,
546: sizeof(net->host->sock_addr));
2.93 eric 547: if (NETCALL_ERROR(status))
2.56 frystyk 548: {
549: if (PROT_TRACE)
2.83 frystyk 550: HTTrace("Socket...... Bind failed %d\n", socerrno);
2.95 frystyk 551: net->host->tcpstate = TCP_ERROR;
2.56 frystyk 552: } else
2.95 frystyk 553: net->host->tcpstate = TCP_NEED_LISTEN;
2.56 frystyk 554: break;
555:
556: case TCP_NEED_LISTEN:
2.95 frystyk 557: status = listen(HTNet_socket(net), backlog);
2.93 eric 558: if (NETCALL_ERROR(status))
2.95 frystyk 559: net->host->tcpstate = TCP_ERROR;
2.56 frystyk 560: else
2.95 frystyk 561: net->host->tcpstate = TCP_CONNECTED;
2.56 frystyk 562: break;
563:
564: case TCP_CONNECTED:
2.95 frystyk 565: net->host->tcpstate = TCP_BEGIN;
2.56 frystyk 566: if (PROT_TRACE)
2.83 frystyk 567: HTTrace("Socket...... Bind and listen on port %d %s\n",
2.95 frystyk 568: (int) ntohs(net->host->sock_addr.sin_port),
569: HTInetString(&net->host->sock_addr));
2.56 frystyk 570: return HT_OK;
571: break;
2.13 frystyk 572:
2.91 frystyk 573: case TCP_CHANNEL:
2.56 frystyk 574: case TCP_NEED_CONNECT:
575: case TCP_DNS:
576: case TCP_ERROR:
2.83 frystyk 577: if (PROT_TRACE) HTTrace("Socket...... Listen failed\n");
2.62 frystyk 578: HTRequest_addSystemError(net->request, ERR_FATAL, socerrno, NO, "HTDoListen");
2.95 frystyk 579: net->host->tcpstate = TCP_BEGIN;
2.56 frystyk 580: return HT_ERROR;
581: break;
582: }
2.38 frystyk 583: }
1.1 timbl 584: }
585:
2.83 frystyk 586: /* HTDoClose
587: ** ---------
588: ** Closes a file descriptor whatever means are available on the current
589: ** platform. If we have unix file descriptors then use this otherwise use
590: ** the ANSI C file descriptors
591: **
592: ** returns HT_ERROR Error has occured or interrupted
593: ** HT_OK if connected
594: ** HT_WOULD_BLOCK if operation would have blocked
595: */
2.87 frystyk 596: PUBLIC int HTDoClose (HTNet * net)
2.83 frystyk 597: {
598: int status = -1;
2.95 frystyk 599: if (net && HTNet_socket(net) != INVSOC) {
600: if (PROT_TRACE) HTTrace("HTDoClose... Close %d\n", HTNet_socket(net));
601: status = NETCLOSE(HTNet_socket(net));
602: /* HTEvent_unregister(HTNet_socket(net), (SockOps) FD_ALL); */
2.91 frystyk 603: HTNet_decreaseSocket();
2.95 frystyk 604: HTNet_setSocket(net, INVSOC);
2.91 frystyk 605:
606: /*
607: ** As we have a socket available we check for whether
608: ** we can start any pending requests. We do this by asking for
609: ** pending Host objects. If none then use the current object
610: */
611: HTHost_launchPending(net->host);
612:
613: } else
614: if (PROT_TRACE) HTTrace("HTDoClose... No pending requests\n");
2.83 frystyk 615: return status < 0 ? HT_ERROR : HT_OK;
616: }
2.91 frystyk 617:
2.83 frystyk 618:
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