sockets.c revision 112445b8a752ce174f36cf853d5f1c356c3f5286
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdio.h> 18#include <stdlib.h> 19#include <unistd.h> 20#include <errno.h> 21#include <string.h> 22#include <ctype.h> 23 24#include "sysdeps.h" 25 26#define TRACE_TAG TRACE_SOCKETS 27#include "adb.h" 28 29ADB_MUTEX_DEFINE( socket_list_lock ); 30 31static void local_socket_close_locked(asocket *s); 32 33int sendfailmsg(int fd, const char *reason) 34{ 35 char buf[9]; 36 int len; 37 len = strlen(reason); 38 if(len > 0xffff) len = 0xffff; 39 snprintf(buf, sizeof buf, "FAIL%04x", len); 40 if(writex(fd, buf, 8)) return -1; 41 return writex(fd, reason, len); 42} 43 44//extern int online; 45 46static unsigned local_socket_next_id = 1; 47 48static asocket local_socket_list = { 49 .next = &local_socket_list, 50 .prev = &local_socket_list, 51}; 52 53/* the the list of currently closing local sockets. 54** these have no peer anymore, but still packets to 55** write to their fd. 56*/ 57static asocket local_socket_closing_list = { 58 .next = &local_socket_closing_list, 59 .prev = &local_socket_closing_list, 60}; 61 62asocket *find_local_socket(unsigned id) 63{ 64 asocket *s; 65 asocket *result = NULL; 66 67 adb_mutex_lock(&socket_list_lock); 68 for (s = local_socket_list.next; s != &local_socket_list; s = s->next) { 69 if (s->id == id) { 70 result = s; 71 break; 72 } 73 } 74 adb_mutex_unlock(&socket_list_lock); 75 76 return result; 77} 78 79static void 80insert_local_socket(asocket* s, asocket* list) 81{ 82 s->next = list; 83 s->prev = s->next->prev; 84 s->prev->next = s; 85 s->next->prev = s; 86} 87 88 89void install_local_socket(asocket *s) 90{ 91 adb_mutex_lock(&socket_list_lock); 92 93 s->id = local_socket_next_id++; 94 insert_local_socket(s, &local_socket_list); 95 96 adb_mutex_unlock(&socket_list_lock); 97} 98 99void remove_socket(asocket *s) 100{ 101 // socket_list_lock should already be held 102 if (s->prev && s->next) 103 { 104 s->prev->next = s->next; 105 s->next->prev = s->prev; 106 s->next = 0; 107 s->prev = 0; 108 s->id = 0; 109 } 110} 111 112void close_all_sockets(atransport *t) 113{ 114 asocket *s; 115 116 /* this is a little gross, but since s->close() *will* modify 117 ** the list out from under you, your options are limited. 118 */ 119 adb_mutex_lock(&socket_list_lock); 120restart: 121 for(s = local_socket_list.next; s != &local_socket_list; s = s->next){ 122 if(s->transport == t || (s->peer && s->peer->transport == t)) { 123 local_socket_close_locked(s); 124 goto restart; 125 } 126 } 127 adb_mutex_unlock(&socket_list_lock); 128} 129 130static int local_socket_enqueue(asocket *s, apacket *p) 131{ 132 D("LS(%d): enqueue %d\n", s->id, p->len); 133 134 p->ptr = p->data; 135 136 /* if there is already data queue'd, we will receive 137 ** events when it's time to write. just add this to 138 ** the tail 139 */ 140 if(s->pkt_first) { 141 goto enqueue; 142 } 143 144 /* write as much as we can, until we 145 ** would block or there is an error/eof 146 */ 147 while(p->len > 0) { 148 int r = adb_write(s->fd, p->ptr, p->len); 149 if(r > 0) { 150 p->len -= r; 151 p->ptr += r; 152 continue; 153 } 154 if((r == 0) || (errno != EAGAIN)) { 155 D( "LS(%d): not ready, errno=%d: %s\n", s->id, errno, strerror(errno) ); 156 s->close(s); 157 return 1; /* not ready (error) */ 158 } else { 159 break; 160 } 161 } 162 163 if(p->len == 0) { 164 put_apacket(p); 165 return 0; /* ready for more data */ 166 } 167 168enqueue: 169 p->next = 0; 170 if(s->pkt_first) { 171 s->pkt_last->next = p; 172 } else { 173 s->pkt_first = p; 174 } 175 s->pkt_last = p; 176 177 /* make sure we are notified when we can drain the queue */ 178 fdevent_add(&s->fde, FDE_WRITE); 179 180 return 1; /* not ready (backlog) */ 181} 182 183static void local_socket_ready(asocket *s) 184{ 185 /* far side is ready for data, pay attention to 186 readable events */ 187 fdevent_add(&s->fde, FDE_READ); 188// D("LS(%d): ready()\n", s->id); 189} 190 191static void local_socket_close(asocket *s) 192{ 193 adb_mutex_lock(&socket_list_lock); 194 local_socket_close_locked(s); 195 adb_mutex_unlock(&socket_list_lock); 196} 197 198// be sure to hold the socket list lock when calling this 199static void local_socket_destroy(asocket *s) 200{ 201 apacket *p, *n; 202 D("LS(%d): destroying fde.fd=%d\n", s->id, s->fde.fd); 203 204 /* IMPORTANT: the remove closes the fd 205 ** that belongs to this socket 206 */ 207 fdevent_remove(&s->fde); 208 209 /* dispose of any unwritten data */ 210 for(p = s->pkt_first; p; p = n) { 211 D("LS(%d): discarding %d bytes\n", s->id, p->len); 212 n = p->next; 213 put_apacket(p); 214 } 215 remove_socket(s); 216 free(s); 217} 218 219 220static void local_socket_close_locked(asocket *s) 221{ 222 D("entered. LS(%d) fd=%d\n", s->id, s->fd); 223 if(s->peer) { 224 D("LS(%d): closing peer. peer->id=%d peer->fd=%d\n", 225 s->id, s->peer->id, s->peer->fd); 226 s->peer->peer = 0; 227 // tweak to avoid deadlock 228 if (s->peer->close == local_socket_close) 229 local_socket_close_locked(s->peer); 230 else 231 s->peer->close(s->peer); 232 } 233 234 /* If we are already closing, or if there are no 235 ** pending packets, destroy immediately 236 */ 237 if (s->closing || s->pkt_first == NULL) { 238 int id = s->id; 239 local_socket_destroy(s); 240 D("LS(%d): closed\n", id); 241 return; 242 } 243 244 /* otherwise, put on the closing list 245 */ 246 D("LS(%d): closing\n", s->id); 247 s->closing = 1; 248 fdevent_del(&s->fde, FDE_READ); 249 remove_socket(s); 250 D("LS(%d): put on socket_closing_list fd=%d\n", s->id, s->fd); 251 insert_local_socket(s, &local_socket_closing_list); 252} 253 254static void local_socket_event_func(int fd, unsigned ev, void *_s) 255{ 256 asocket *s = _s; 257 258 D("LS(%d): event_func(fd=%d(==%d), ev=%04x)\n", s->id, s->fd, fd, ev); 259 260 /* put the FDE_WRITE processing before the FDE_READ 261 ** in order to simplify the code. 262 */ 263 if(ev & FDE_WRITE){ 264 apacket *p; 265 266 while((p = s->pkt_first) != 0) { 267 while(p->len > 0) { 268 int r = adb_write(fd, p->ptr, p->len); 269 if(r > 0) { 270 p->ptr += r; 271 p->len -= r; 272 continue; 273 } 274 if(r < 0) { 275 /* returning here is ok because FDE_READ will 276 ** be processed in the next iteration loop 277 */ 278 if(errno == EAGAIN) return; 279 if(errno == EINTR) continue; 280 } 281 s->close(s); 282 return; 283 } 284 285 if(p->len == 0) { 286 s->pkt_first = p->next; 287 if(s->pkt_first == 0) s->pkt_last = 0; 288 put_apacket(p); 289 } 290 } 291 292 /* if we sent the last packet of a closing socket, 293 ** we can now destroy it. 294 */ 295 if (s->closing) { 296 s->close(s); 297 return; 298 } 299 300 /* no more packets queued, so we can ignore 301 ** writable events again and tell our peer 302 ** to resume writing 303 */ 304 fdevent_del(&s->fde, FDE_WRITE); 305 s->peer->ready(s->peer); 306 } 307 308 309 if(ev & FDE_READ){ 310 apacket *p = get_apacket(); 311 unsigned char *x = p->data; 312 size_t avail = MAX_PAYLOAD; 313 int r; 314 int is_eof = 0; 315 316 while(avail > 0) { 317 r = adb_read(fd, x, avail); 318 D("LS(%d): post adb_read(fd=%d,...) r=%d (errno=%d) avail=%d\n", s->id, s->fd, r, r<0?errno:0, avail); 319 if(r > 0) { 320 avail -= r; 321 x += r; 322 continue; 323 } 324 if(r < 0) { 325 if(errno == EAGAIN) break; 326 if(errno == EINTR) continue; 327 } 328 329 /* r = 0 or unhandled error */ 330 is_eof = 1; 331 break; 332 } 333 D("LS(%d): fd=%d post avail loop. r=%d is_eof=%d forced_eof=%d\n", 334 s->id, s->fd, r, is_eof, s->fde.force_eof); 335 if((avail == MAX_PAYLOAD) || (s->peer == 0)) { 336 put_apacket(p); 337 } else { 338 p->len = MAX_PAYLOAD - avail; 339 340 r = s->peer->enqueue(s->peer, p); 341 D("LS(%d): fd=%d post peer->enqueue(). r=%d\n", s->id, s->fd, r); 342 343 if(r < 0) { 344 /* error return means they closed us as a side-effect 345 ** and we must return immediately. 346 ** 347 ** note that if we still have buffered packets, the 348 ** socket will be placed on the closing socket list. 349 ** this handler function will be called again 350 ** to process FDE_WRITE events. 351 */ 352 return; 353 } 354 355 if(r > 0) { 356 /* if the remote cannot accept further events, 357 ** we disable notification of READs. They'll 358 ** be enabled again when we get a call to ready() 359 */ 360 fdevent_del(&s->fde, FDE_READ); 361 } 362 } 363 /* Don't allow a forced eof if data is still there */ 364 if((s->fde.force_eof && !r) || is_eof) { 365 s->close(s); 366 } 367 } 368 369 if(ev & FDE_ERROR){ 370 /* this should be caught be the next read or write 371 ** catching it here means we may skip the last few 372 ** bytes of readable data. 373 */ 374// s->close(s); 375 D("LS(%d): FDE_ERROR (fd=%d)\n", s->id, s->fd); 376 377 return; 378 } 379} 380 381asocket *create_local_socket(int fd) 382{ 383 asocket *s = calloc(1, sizeof(asocket)); 384 if (s == NULL) fatal("cannot allocate socket"); 385 s->fd = fd; 386 s->enqueue = local_socket_enqueue; 387 s->ready = local_socket_ready; 388 s->close = local_socket_close; 389 install_local_socket(s); 390 391 fdevent_install(&s->fde, fd, local_socket_event_func, s); 392/* fdevent_add(&s->fde, FDE_ERROR); */ 393 //fprintf(stderr, "Created local socket in create_local_socket \n"); 394 D("LS(%d): created (fd=%d)\n", s->id, s->fd); 395 return s; 396} 397 398asocket *create_local_service_socket(const char *name) 399{ 400 asocket *s; 401 int fd; 402 403#if !ADB_HOST 404 if (!strcmp(name,"jdwp")) { 405 return create_jdwp_service_socket(); 406 } 407 if (!strcmp(name,"track-jdwp")) { 408 return create_jdwp_tracker_service_socket(); 409 } 410#endif 411 fd = service_to_fd(name); 412 if(fd < 0) return 0; 413 414 s = create_local_socket(fd); 415 D("LS(%d): bound to '%s' via %d\n", s->id, name, fd); 416 return s; 417} 418 419#if ADB_HOST 420static asocket *create_host_service_socket(const char *name, const char* serial) 421{ 422 asocket *s; 423 424 s = host_service_to_socket(name, serial); 425 426 if (s != NULL) { 427 D("LS(%d) bound to '%s'\n", s->id, name); 428 return s; 429 } 430 431 return s; 432} 433#endif /* ADB_HOST */ 434 435/* a Remote socket is used to send/receive data to/from a given transport object 436** it needs to be closed when the transport is forcibly destroyed by the user 437*/ 438typedef struct aremotesocket { 439 asocket socket; 440 adisconnect disconnect; 441} aremotesocket; 442 443static int remote_socket_enqueue(asocket *s, apacket *p) 444{ 445 D("entered remote_socket_enqueue RS(%d) WRITE fd=%d peer.fd=%d\n", 446 s->id, s->fd, s->peer->fd); 447 p->msg.command = A_WRTE; 448 p->msg.arg0 = s->peer->id; 449 p->msg.arg1 = s->id; 450 p->msg.data_length = p->len; 451 send_packet(p, s->transport); 452 return 1; 453} 454 455static void remote_socket_ready(asocket *s) 456{ 457 D("entered remote_socket_ready RS(%d) OKAY fd=%d peer.fd=%d\n", 458 s->id, s->fd, s->peer->fd); 459 apacket *p = get_apacket(); 460 p->msg.command = A_OKAY; 461 p->msg.arg0 = s->peer->id; 462 p->msg.arg1 = s->id; 463 send_packet(p, s->transport); 464} 465 466static void remote_socket_close(asocket *s) 467{ 468 D("entered remote_socket_close RS(%d) CLOSE fd=%d peer->fd=%d\n", 469 s->id, s->fd, s->peer?s->peer->fd:-1); 470 apacket *p = get_apacket(); 471 p->msg.command = A_CLSE; 472 if(s->peer) { 473 p->msg.arg0 = s->peer->id; 474 s->peer->peer = 0; 475 D("RS(%d) peer->close()ing peer->id=%d peer->fd=%d\n", 476 s->id, s->peer->id, s->peer->fd); 477 s->peer->close(s->peer); 478 } 479 p->msg.arg1 = s->id; 480 send_packet(p, s->transport); 481 D("RS(%d): closed\n", s->id); 482 remove_transport_disconnect( s->transport, &((aremotesocket*)s)->disconnect ); 483 free(s); 484} 485 486static void remote_socket_disconnect(void* _s, atransport* t) 487{ 488 asocket* s = _s; 489 asocket* peer = s->peer; 490 491 D("remote_socket_disconnect RS(%d)\n", s->id); 492 if (peer) { 493 peer->peer = NULL; 494 peer->close(peer); 495 } 496 remove_transport_disconnect( s->transport, &((aremotesocket*)s)->disconnect ); 497 free(s); 498} 499 500asocket *create_remote_socket(unsigned id, atransport *t) 501{ 502 asocket *s = calloc(1, sizeof(aremotesocket)); 503 adisconnect* dis = &((aremotesocket*)s)->disconnect; 504 505 if (s == NULL) fatal("cannot allocate socket"); 506 s->id = id; 507 s->enqueue = remote_socket_enqueue; 508 s->ready = remote_socket_ready; 509 s->close = remote_socket_close; 510 s->transport = t; 511 512 dis->func = remote_socket_disconnect; 513 dis->opaque = s; 514 add_transport_disconnect( t, dis ); 515 D("RS(%d): created\n", s->id); 516 return s; 517} 518 519void connect_to_remote(asocket *s, const char *destination) 520{ 521 D("Connect_to_remote call RS(%d) fd=%d\n", s->id, s->fd); 522 apacket *p = get_apacket(); 523 int len = strlen(destination) + 1; 524 525 if(len > (MAX_PAYLOAD-1)) { 526 fatal("destination oversized"); 527 } 528 529 D("LS(%d): connect('%s')\n", s->id, destination); 530 p->msg.command = A_OPEN; 531 p->msg.arg0 = s->id; 532 p->msg.data_length = len; 533 strcpy((char*) p->data, destination); 534 send_packet(p, s->transport); 535} 536 537 538/* this is used by magic sockets to rig local sockets to 539 send the go-ahead message when they connect */ 540static void local_socket_ready_notify(asocket *s) 541{ 542 s->ready = local_socket_ready; 543 s->close = local_socket_close; 544 adb_write(s->fd, "OKAY", 4); 545 s->ready(s); 546} 547 548/* this is used by magic sockets to rig local sockets to 549 send the failure message if they are closed before 550 connected (to avoid closing them without a status message) */ 551static void local_socket_close_notify(asocket *s) 552{ 553 s->ready = local_socket_ready; 554 s->close = local_socket_close; 555 sendfailmsg(s->fd, "closed"); 556 s->close(s); 557} 558 559unsigned unhex(unsigned char *s, int len) 560{ 561 unsigned n = 0, c; 562 563 while(len-- > 0) { 564 switch((c = *s++)) { 565 case '0': case '1': case '2': 566 case '3': case '4': case '5': 567 case '6': case '7': case '8': 568 case '9': 569 c -= '0'; 570 break; 571 case 'a': case 'b': case 'c': 572 case 'd': case 'e': case 'f': 573 c = c - 'a' + 10; 574 break; 575 case 'A': case 'B': case 'C': 576 case 'D': case 'E': case 'F': 577 c = c - 'A' + 10; 578 break; 579 default: 580 return 0xffffffff; 581 } 582 583 n = (n << 4) | c; 584 } 585 586 return n; 587} 588 589/* skip_host_serial return the position in a string 590 skipping over the 'serial' parameter in the ADB protocol, 591 where parameter string may be a host:port string containing 592 the protocol delimiter (colon). */ 593char *skip_host_serial(char *service) { 594 char *first_colon, *serial_end; 595 596 first_colon = strchr(service, ':'); 597 if (!first_colon) { 598 /* No colon in service string. */ 599 return NULL; 600 } 601 serial_end = first_colon; 602 if (isdigit(serial_end[1])) { 603 serial_end++; 604 while ((*serial_end) && isdigit(*serial_end)) { 605 serial_end++; 606 } 607 if ((*serial_end) != ':') { 608 // Something other than numbers was found, reset the end. 609 serial_end = first_colon; 610 } 611 } 612 return serial_end; 613} 614 615static int smart_socket_enqueue(asocket *s, apacket *p) 616{ 617 unsigned len; 618#if ADB_HOST 619 char *service = NULL; 620 char* serial = NULL; 621 transport_type ttype = kTransportAny; 622#endif 623 624 D("SS(%d): enqueue %d\n", s->id, p->len); 625 626 if(s->pkt_first == 0) { 627 s->pkt_first = p; 628 s->pkt_last = p; 629 } else { 630 if((s->pkt_first->len + p->len) > MAX_PAYLOAD) { 631 D("SS(%d): overflow\n", s->id); 632 put_apacket(p); 633 goto fail; 634 } 635 636 memcpy(s->pkt_first->data + s->pkt_first->len, 637 p->data, p->len); 638 s->pkt_first->len += p->len; 639 put_apacket(p); 640 641 p = s->pkt_first; 642 } 643 644 /* don't bother if we can't decode the length */ 645 if(p->len < 4) return 0; 646 647 len = unhex(p->data, 4); 648 if((len < 1) || (len > 1024)) { 649 D("SS(%d): bad size (%d)\n", s->id, len); 650 goto fail; 651 } 652 653 D("SS(%d): len is %d\n", s->id, len ); 654 /* can't do anything until we have the full header */ 655 if((len + 4) > p->len) { 656 D("SS(%d): waiting for %d more bytes\n", s->id, len+4 - p->len); 657 return 0; 658 } 659 660 p->data[len + 4] = 0; 661 662 D("SS(%d): '%s'\n", s->id, (char*) (p->data + 4)); 663 664#if ADB_HOST 665 service = (char *)p->data + 4; 666 if(!strncmp(service, "host-serial:", strlen("host-serial:"))) { 667 char* serial_end; 668 service += strlen("host-serial:"); 669 670 // serial number should follow "host:" and could be a host:port string. 671 serial_end = skip_host_serial(service); 672 if (serial_end) { 673 *serial_end = 0; // terminate string 674 serial = service; 675 service = serial_end + 1; 676 } 677 } else if (!strncmp(service, "host-usb:", strlen("host-usb:"))) { 678 ttype = kTransportUsb; 679 service += strlen("host-usb:"); 680 } else if (!strncmp(service, "host-local:", strlen("host-local:"))) { 681 ttype = kTransportLocal; 682 service += strlen("host-local:"); 683 } else if (!strncmp(service, "host:", strlen("host:"))) { 684 ttype = kTransportAny; 685 service += strlen("host:"); 686 } else { 687 service = NULL; 688 } 689 690 if (service) { 691 asocket *s2; 692 693 /* some requests are handled immediately -- in that 694 ** case the handle_host_request() routine has sent 695 ** the OKAY or FAIL message and all we have to do 696 ** is clean up. 697 */ 698 if(handle_host_request(service, ttype, serial, s->peer->fd, s) == 0) { 699 /* XXX fail message? */ 700 D( "SS(%d): handled host service '%s'\n", s->id, service ); 701 goto fail; 702 } 703 if (!strncmp(service, "transport", strlen("transport"))) { 704 D( "SS(%d): okay transport\n", s->id ); 705 p->len = 0; 706 return 0; 707 } 708 709 /* try to find a local service with this name. 710 ** if no such service exists, we'll fail out 711 ** and tear down here. 712 */ 713 s2 = create_host_service_socket(service, serial); 714 if(s2 == 0) { 715 D( "SS(%d): couldn't create host service '%s'\n", s->id, service ); 716 sendfailmsg(s->peer->fd, "unknown host service"); 717 goto fail; 718 } 719 720 /* we've connected to a local host service, 721 ** so we make our peer back into a regular 722 ** local socket and bind it to the new local 723 ** service socket, acknowledge the successful 724 ** connection, and close this smart socket now 725 ** that its work is done. 726 */ 727 adb_write(s->peer->fd, "OKAY", 4); 728 729 s->peer->ready = local_socket_ready; 730 s->peer->close = local_socket_close; 731 s->peer->peer = s2; 732 s2->peer = s->peer; 733 s->peer = 0; 734 D( "SS(%d): okay\n", s->id ); 735 s->close(s); 736 737 /* initial state is "ready" */ 738 s2->ready(s2); 739 return 0; 740 } 741#else /* !ADB_HOST */ 742 if (s->transport == NULL) { 743 char* error_string = "unknown failure"; 744 s->transport = acquire_one_transport (CS_ANY, 745 kTransportAny, NULL, &error_string); 746 747 if (s->transport == NULL) { 748 sendfailmsg(s->peer->fd, error_string); 749 goto fail; 750 } 751 } 752#endif 753 754 if(!(s->transport) || (s->transport->connection_state == CS_OFFLINE)) { 755 /* if there's no remote we fail the connection 756 ** right here and terminate it 757 */ 758 sendfailmsg(s->peer->fd, "device offline (x)"); 759 goto fail; 760 } 761 762 763 /* instrument our peer to pass the success or fail 764 ** message back once it connects or closes, then 765 ** detach from it, request the connection, and 766 ** tear down 767 */ 768 s->peer->ready = local_socket_ready_notify; 769 s->peer->close = local_socket_close_notify; 770 s->peer->peer = 0; 771 /* give him our transport and upref it */ 772 s->peer->transport = s->transport; 773 774 connect_to_remote(s->peer, (char*) (p->data + 4)); 775 s->peer = 0; 776 s->close(s); 777 return 1; 778 779fail: 780 /* we're going to close our peer as a side-effect, so 781 ** return -1 to signal that state to the local socket 782 ** who is enqueueing against us 783 */ 784 s->close(s); 785 return -1; 786} 787 788static void smart_socket_ready(asocket *s) 789{ 790 D("SS(%d): ready\n", s->id); 791} 792 793static void smart_socket_close(asocket *s) 794{ 795 D("SS(%d): closed\n", s->id); 796 if(s->pkt_first){ 797 put_apacket(s->pkt_first); 798 } 799 if(s->peer) { 800 s->peer->peer = 0; 801 s->peer->close(s->peer); 802 } 803 free(s); 804} 805 806asocket *create_smart_socket(void (*action_cb)(asocket *s, const char *act)) 807{ 808 D("Creating smart socket \n"); 809 asocket *s = calloc(1, sizeof(asocket)); 810 if (s == NULL) fatal("cannot allocate socket"); 811 s->enqueue = smart_socket_enqueue; 812 s->ready = smart_socket_ready; 813 s->close = smart_socket_close; 814 s->extra = action_cb; 815 816 D("SS(%d): created %p\n", s->id, action_cb); 817 return s; 818} 819 820void smart_socket_action(asocket *s, const char *act) 821{ 822 823} 824 825void connect_to_smartsocket(asocket *s) 826{ 827 D("Connecting to smart socket \n"); 828 asocket *ss = create_smart_socket(smart_socket_action); 829 s->peer = ss; 830 ss->peer = s; 831 s->ready(s); 832} 833