1 /* buf trp (transport) - buffered transport using the TCP one */
3 /* Copyright (c) 2004, 2005, 2006, 2007, 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include <string.h> /* memset */
14 #include "xbt/sysdep.h"
16 #include "gras/Transport/transport_private.h"
17 #include "gras/Msg/msg_interface.h" /* listener_close_socket */
19 /* FIXME maybe READV is sometime a good thing? */
27 #define MIN(a,b) ((a)<(b)?(a):(b))
30 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_trp_tcp, gras_trp,
31 "TCP buffered transport");
34 *** Specific socket part
38 int port; /* port on this side */
39 int peer_port; /* port on the other side */
40 char *peer_name; /* hostname of the other side */
41 char *peer_proc; /* process on the other side */
42 } s_gras_trp_tcp_sock_data_t, *gras_trp_tcp_sock_data_t;
44 typedef enum { buffering_buf, buffering_iov } buffering_kind;
49 int pos; /* for receive; not exchanged over the net */
53 struct gras_trp_bufdata_ {
55 gras_trp_buf_t in_buf;
56 gras_trp_buf_t out_buf;
60 xbt_dynar_t out_buf_v;
68 /*****************************/
69 /****[ SOCKET MANAGEMENT ]****/
70 /*****************************/
71 /* we exchange port number on client side on socket creation,
72 so we need to be able to talk right now. */
73 static XBT_INLINE void gras_trp_tcp_send(gras_socket_t sock,
75 unsigned long int size);
76 static int gras_trp_tcp_recv(gras_socket_t sock, char *data,
77 unsigned long int size);
80 static int _gras_tcp_proto_number(void);
83 void gras_trp_sock_socket_client(gras_trp_plugin_t ignored,
86 /*OUT*/gras_socket_t sock)
88 gras_trp_tcp_sock_data_t sockdata = xbt_new(s_gras_trp_tcp_sock_data_t,1);
89 sockdata->port = port;
90 sockdata->peer_proc = NULL;
91 sockdata->peer_port = port;
92 sockdata->peer_name = (char *) strdup(host ? host : "localhost");
93 sock->data = sockdata;
95 struct sockaddr_in addr;
97 struct in_addr *haddr;
98 int size = sock->buf_size;
99 uint32_t myport = htonl(((gras_trp_procdata_t)
101 (gras_trp_libdata_id))->myport);
103 sock->incoming = 1; /* TCP sockets are duplex'ed */
105 sock->sd = socket(AF_INET, SOCK_STREAM, 0);
108 THROWF(system_error, 0, "Failed to create socket: %s",
109 sock_errstr(sock_errno));
113 (sock->sd, SOL_SOCKET, SO_RCVBUF, (char *) &size, sizeof(size))
114 || setsockopt(sock->sd, SOL_SOCKET, SO_SNDBUF, (char *) &size,
116 XBT_VERB("setsockopt failed, cannot set buffer size: %s",
117 sock_errstr(sock_errno));
120 he = gethostbyname(sockdata->peer_name);
122 THROWF(system_error, 0, "Failed to lookup hostname %s: %s",
123 sockdata->peer_name, sock_errstr(sock_errno));
126 haddr = ((struct in_addr *) (he->h_addr_list)[0]);
128 memset(&addr, 0, sizeof(struct sockaddr_in));
129 memcpy(&addr.sin_addr, haddr, sizeof(struct in_addr));
130 addr.sin_family = AF_INET;
131 addr.sin_port = htons(sockdata->peer_port);
133 if (connect(sock->sd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
135 THROWF(system_error, 0,
136 "Failed to connect socket to %s:%d (%s)",
137 sockdata->peer_name, sockdata->peer_port, sock_errstr(sock_errno));
140 gras_trp_tcp_send(sock, (char *) &myport, sizeof(uint32_t));
141 XBT_DEBUG("peerport sent to %d", sockdata->peer_port);
143 XBT_VERB("Connect to %s:%d (sd=%d, port %d here)",
144 sockdata->peer_name, sockdata->peer_port, sock->sd, sockdata->port);
148 * gras_trp_sock_socket_server:
150 * Open a socket used to receive messages.
153 void gras_trp_sock_socket_server(gras_trp_plugin_t ignored,
157 int size = sock->buf_size;
159 struct sockaddr_in server;
161 gras_trp_tcp_sock_data_t sockdata = xbt_new(s_gras_trp_tcp_sock_data_t,1);
162 sockdata->port = port;
163 sockdata->peer_port = -1;
164 sockdata->peer_name = NULL;
165 sockdata->peer_proc = NULL;
168 sock->outgoing = 1; /* TCP => duplex mode */
170 server.sin_port = htons((u_short) sockdata->port);
171 server.sin_addr.s_addr = INADDR_ANY;
172 server.sin_family = AF_INET;
173 if ((sock->sd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
174 THROWF(system_error, 0, "Socket allocation failed: %s",
175 sock_errstr(sock_errno));
178 (sock->sd, SOL_SOCKET, SO_REUSEADDR, (char *) &on, sizeof(on)))
179 THROWF(system_error, 0,
180 "setsockopt failed, cannot condition the socket: %s",
181 sock_errstr(sock_errno));
183 if (setsockopt(sock->sd, SOL_SOCKET, SO_RCVBUF,
184 (char *) &size, sizeof(size))
185 || setsockopt(sock->sd, SOL_SOCKET, SO_SNDBUF,
186 (char *) &size, sizeof(size))) {
187 XBT_VERB("setsockopt failed, cannot set buffer size: %s",
188 sock_errstr(sock_errno));
191 if (bind(sock->sd, (struct sockaddr *) &server, sizeof(server)) == -1) {
193 THROWF(system_error, 0,
194 "Cannot bind to port %d: %s", sockdata->port,
195 sock_errstr(sock_errno));
198 XBT_DEBUG("Listen on port %d (sd=%d)", sockdata->port, sock->sd);
199 if (listen(sock->sd, 5) < 0) {
201 THROWF(system_error, 0,
202 "Cannot listen on port %d: %s",
203 sockdata->port, sock_errstr(sock_errno));
206 XBT_VERB("Openned a server socket on port %d (sd=%d)", sockdata->port,
210 static gras_socket_t gras_trp_sock_socket_accept(gras_socket_t sock)
214 struct sockaddr_in peer_in;
215 socklen_t peer_in_len = sizeof(peer_in);
222 socklen_t s = sizeof(int);
229 gras_trp_socket_new(1, &res);
231 sd = accept(sock->sd, (struct sockaddr *) &peer_in, &peer_in_len);
232 tmp_errno = sock_errno;
235 gras_socket_close(sock);
236 THROWF(system_error, 0,
237 "Accept failed (%s). Droping server socket.",
238 sock_errstr(tmp_errno));
241 if (_gras_tcp_proto_number()!=-1)
242 if (setsockopt(sd, _gras_tcp_proto_number(), TCP_NODELAY, (char *) &i,s))
245 if (setsockopt(sd, SOL_SOCKET, SO_KEEPALIVE, (char *) &i, s))
249 THROWF(system_error, 0,
250 "setsockopt failed, cannot condition the socket: %s",
251 sock_errstr(tmp_errno));
253 res->buf_size = sock->buf_size;
254 size = sock->buf_size;
255 if (setsockopt(sd, SOL_SOCKET, SO_RCVBUF, (char *) &size, sizeof(size))
256 || setsockopt(sd, SOL_SOCKET, SO_SNDBUF, (char *) &size,
258 XBT_VERB("setsockopt failed, cannot set buffer size: %s",
259 sock_errstr(tmp_errno));
261 res->plugin = sock->plugin;
262 res->incoming = sock->incoming;
263 res->outgoing = sock->outgoing;
266 gras_trp_tcp_sock_data_t sockdata = xbt_new(s_gras_trp_tcp_sock_data_t,1);
271 gras_trp_tcp_recv(res, (char *) &hisport, sizeof(hisport));
272 sockdata->peer_port = ntohl(hisport);
273 XBT_DEBUG("peerport %d received", sockdata->peer_port);
275 /* FIXME: Lock to protect inet_ntoa */
276 if (((struct sockaddr *) &peer_in)->sa_family != AF_INET) {
277 sockdata->peer_name = (char *) strdup("unknown");
279 struct in_addr addrAsInAddr;
282 addrAsInAddr.s_addr = peer_in.sin_addr.s_addr;
284 tmp = inet_ntoa(addrAsInAddr);
286 sockdata->peer_name = (char *) strdup(tmp);
288 sockdata->peer_name = (char *) strdup("unknown");
292 XBT_VERB("Accepted from %s:%d (sd=%d)", sockdata->peer_name, sockdata->peer_port, sd);
293 xbt_dynar_push(((gras_trp_procdata_t)
294 gras_libdata_by_id(gras_trp_libdata_id))->sockets, &res);
300 static void gras_trp_sock_socket_close(gras_socket_t sock)
304 return; /* close only once */
306 if (((gras_trp_tcp_sock_data_t)sock->data)->peer_name)
307 free(((gras_trp_tcp_sock_data_t)sock->data)->peer_name);
310 XBT_VERB("close tcp connection %d", sock->sd);
312 /* ask the listener to close the socket */
313 gras_msg_listener_close_socket(sock->sd);
316 /************************************/
317 /****[ end of SOCKET MANAGEMENT ]****/
318 /************************************/
321 /************************************/
322 /****[ UNBUFFERED DATA EXCHANGE ]****/
323 /************************************/
324 /* Temptation to merge this with file data exchange is great,
325 but doesn't work on BillWare (see tcp_write() in portable.h) */
326 static XBT_INLINE void gras_trp_tcp_send(gras_socket_t sock,
328 unsigned long int size)
334 status = tcp_write(sock->sd, data, (size_t) size);
335 XBT_DEBUG("write(%d, %p, %ld);", sock->sd, data, size);
339 if (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)
341 if (errno == EINTR || errno == EAGAIN)
345 THROWF(system_error, 0, "write(%d,%p,%ld) failed: %s",
346 sock->sd, data, size, sock_errstr(sock_errno));
353 THROWF(system_error, 0, "file descriptor closed (%s)",
354 sock_errstr(sock_errno));
359 static XBT_INLINE int
360 gras_trp_tcp_recv_withbuffer(gras_socket_t sock,
362 unsigned long int size,
363 unsigned long int bufsize)
369 data[0] = sock->recvd_val;
378 XBT_DEBUG("read(%d, %p, %ld) got %d so far (%s)",
379 sock->sd, data + got, bufsize, got,
380 hexa_str((unsigned char *) data, got, 0));
381 status = tcp_read(sock->sd, data + got, (size_t) bufsize);
384 THROWF(system_error, 0,
385 "read(%d,%p,%d) from %s:%d failed: %s; got %d so far",
386 sock->sd, data + got, (int) size, gras_socket_peer_name(sock),
387 gras_socket_peer_port(sock), sock_errstr(sock_errno), got);
389 XBT_DEBUG("Got %d more bytes (%s)", status,
390 hexa_str((unsigned char *) data + got, status, 0));
396 THROWF(system_error, errno,
397 "Socket closed by remote side (got %d bytes before this)",
405 static int gras_trp_tcp_recv(gras_socket_t sock,
406 char *data, unsigned long int size)
408 return gras_trp_tcp_recv_withbuffer(sock, data, size, size);
412 /*******************************************/
413 /****[ end of UNBUFFERED DATA EXCHANGE ]****/
414 /*******************************************/
416 /**********************************/
417 /****[ BUFFERED DATA EXCHANGE ]****/
418 /**********************************/
420 /* Make sure the data is sent */
421 static void gras_trp_bufiov_flush(gras_socket_t sock)
427 gras_trp_bufdata_t *data = sock->bufdata;
431 if (data->out == buffering_buf) {
432 if (XBT_LOG_ISENABLED(gras_trp_tcp, xbt_log_priority_debug))
433 hexa_print("chunk to send ",
434 (unsigned char *) data->out_buf.data, data->out_buf.size);
435 if ((data->out_buf.size - data->out_buf.pos) != 0) {
436 XBT_DEBUG("Send the chunk (size=%d) to %s:%d", data->out_buf.size,
437 gras_socket_peer_name(sock), gras_socket_peer_port(sock));
438 gras_trp_tcp_send(sock, data->out_buf.data, data->out_buf.size);
439 XBT_VERB("Chunk sent (size=%d)", data->out_buf.size);
440 data->out_buf.size = 0;
444 if (data->out == buffering_iov) {
445 XBT_DEBUG("Flush out iov");
446 vect = sock->bufdata->out_buf_v;
447 if ((size = xbt_dynar_length(vect))) {
448 XBT_DEBUG("Flush %d chunks out of this socket", size);
449 writev(sock->sd, xbt_dynar_get_ptr(vect, 0), size);
450 xbt_dynar_reset(vect);
452 data->out_buf.size = 0; /* reset the buffer containing non-stable data */
455 if (data->in == buffering_iov) {
456 XBT_DEBUG("Flush in iov");
457 vect = sock->bufdata->in_buf_v;
458 if ((size = xbt_dynar_length(vect))) {
459 XBT_DEBUG("Get %d chunks from of this socket", size);
460 readv(sock->sd, xbt_dynar_get_ptr(vect, 0), size);
461 xbt_dynar_reset(vect);
468 gras_trp_buf_send(gras_socket_t sock,
470 unsigned long int size, int stable_ignored)
473 gras_trp_bufdata_t *data = (gras_trp_bufdata_t *) sock->bufdata;
478 while (chunk_pos < size) {
479 /* size of the chunk to receive in that shot */
481 min(size - chunk_pos, data->buffsize - data->out_buf.size);
482 XBT_DEBUG("Set the chars %d..%ld into the buffer; size=%ld, ctn=(%s)",
483 (int) data->out_buf.size,
484 ((int) data->out_buf.size) + thissize - 1, size,
485 hexa_str((unsigned char *) chunk, thissize, 0));
487 memcpy(data->out_buf.data + data->out_buf.size, chunk + chunk_pos,
490 data->out_buf.size += thissize;
491 chunk_pos += thissize;
492 XBT_DEBUG("New pos = %d; Still to send = %ld of %ld; ctn sofar=(%s)",
493 data->out_buf.size, size - chunk_pos, size,
494 hexa_str((unsigned char *) chunk, chunk_pos, 0));
496 if (data->out_buf.size == data->buffsize) /* out of space. Flush it */
497 gras_trp_bufiov_flush(sock);
504 gras_trp_buf_recv(gras_socket_t sock, char *chunk, unsigned long int size)
507 gras_trp_bufdata_t *data = sock->bufdata;
508 long int chunk_pos = 0;
512 while (chunk_pos < size) {
513 /* size of the chunk to receive in that shot */
516 if (data->in_buf.size == data->in_buf.pos) { /* out of data. Get more */
518 XBT_DEBUG("Get more data (size=%d,bufsize=%d)",
519 (int) MIN(size - chunk_pos, data->buffsize),
520 (int) data->buffsize);
524 gras_trp_tcp_recv_withbuffer(sock, data->in_buf.data,
525 MIN(size - chunk_pos,
529 data->in_buf.pos = 0;
532 thissize = min(size - chunk_pos, data->in_buf.size - data->in_buf.pos);
533 memcpy(chunk + chunk_pos, data->in_buf.data + data->in_buf.pos,
536 data->in_buf.pos += thissize;
537 chunk_pos += thissize;
538 XBT_DEBUG("New pos = %d; Still to receive = %ld of %ld. Ctn so far=(%s)",
539 data->in_buf.pos, size - chunk_pos, size,
540 hexa_str((unsigned char *) chunk, chunk_pos, 0));
542 /* indicate on need to the gras_select function that there is more to read on this socket so that it does not actually select */
543 sock->moredata = (data->in_buf.size > data->in_buf.pos);
544 XBT_DEBUG("There is %smore data", (sock->moredata ? "" : "no "));
550 /*****************************************/
551 /****[ end of BUFFERED DATA EXCHANGE ]****/
552 /*****************************************/
554 /********************************/
555 /****[ VECTOR DATA EXCHANGE ]****/
556 /********************************/
559 gras_trp_iov_send(gras_socket_t sock,
560 const char *chunk, unsigned long int size, int stable)
563 gras_trp_bufdata_t *data = (gras_trp_bufdata_t *) sock->bufdata;
566 XBT_DEBUG("Buffer one chunk to be sent later (%s)",
567 hexa_str((char *) chunk, size, 0));
569 elm.iov_len = (size_t) size;
572 /* data storage won't last until flush. Save it in a buffer if we can */
574 if (size > data->buffsize - data->out_buf.size) {
576 flush the socket, using data in its actual storage */
577 elm.iov_base = (void *) chunk;
578 xbt_dynar_push(data->out_buf_v, &elm);
580 gras_trp_bufiov_flush(sock);
583 /* buffer big enough:
584 copy data into it, and chain it for upcoming writev */
585 memcpy(data->out_buf.data + data->out_buf.size, chunk, size);
586 elm.iov_base = (void *) (data->out_buf.data + data->out_buf.size);
587 data->out_buf.size += size;
589 xbt_dynar_push(data->out_buf_v, &elm);
593 /* data storage stable. Chain it */
595 elm.iov_base = (void *) chunk;
596 xbt_dynar_push(data->out_buf_v, &elm);
601 gras_trp_iov_recv(gras_socket_t sock, char *chunk, unsigned long int size)
605 XBT_DEBUG("Buffer one chunk to be received later");
606 elm.iov_base = (void *) chunk;
607 elm.iov_len = (size_t) size;
608 xbt_dynar_push(sock->bufdata->in_buf_v, &elm);
614 /***************************************/
615 /****[ end of VECTOR DATA EXCHANGE ]****/
616 /***************************************/
620 *** Prototypes of BUFFERED
623 void gras_trp_buf_socket_client(gras_trp_plugin_t self,
627 void gras_trp_buf_socket_server(gras_trp_plugin_t self,
630 gras_socket_t gras_trp_buf_socket_accept(gras_socket_t sock);
632 void gras_trp_buf_socket_close(gras_socket_t sd);
635 gras_socket_t gras_trp_buf_init_sock(gras_socket_t sock)
637 gras_trp_bufdata_t *data = xbt_new(gras_trp_bufdata_t, 1);
639 data->buffsize = 100 * 1024; /* 100k */
641 data->in_buf.size = 0;
642 data->in_buf.data = xbt_malloc(data->buffsize);
643 data->in_buf.pos = 0; /* useless, indeed, since size==pos */
645 data->out_buf.size = 0;
646 data->out_buf.data = xbt_malloc(data->buffsize);
647 data->out_buf.pos = data->out_buf.size;
650 data->in_buf_v = data->out_buf_v = NULL;
651 data->in_buf_v = xbt_dynar_new(sizeof(struct iovec), NULL);
652 data->out_buf_v = xbt_dynar_new(sizeof(struct iovec), NULL);
653 data->out = buffering_iov;
655 data->out = buffering_buf;
658 data->in = buffering_buf;
660 sock->bufdata = data;
665 *** Info about who's speaking
667 static int gras_trp_tcp_my_port(gras_socket_t s) {
668 gras_trp_tcp_sock_data_t sockdata = s->data;
669 return sockdata->port;
671 static int gras_trp_tcp_peer_port(gras_socket_t s) {
672 gras_trp_tcp_sock_data_t sockdata = s->data;
673 return sockdata->peer_port;
675 static const char* gras_trp_tcp_peer_name(gras_socket_t s) {
676 gras_trp_tcp_sock_data_t sockdata = s->data;
677 return sockdata->peer_name;
679 static const char* gras_trp_tcp_peer_proc(gras_socket_t s) {
680 gras_trp_tcp_sock_data_t sockdata = s->data;
681 return sockdata->peer_proc;
683 static void gras_trp_tcp_peer_proc_set(gras_socket_t s,char *name) {
684 gras_trp_tcp_sock_data_t sockdata = s->data;
685 sockdata->peer_proc = xbt_strdup(name);
691 void gras_trp_tcp_setup(gras_trp_plugin_t plug)
694 plug->my_port = gras_trp_tcp_my_port;
695 plug->peer_port = gras_trp_tcp_peer_port;
696 plug->peer_name = gras_trp_tcp_peer_name;
697 plug->peer_proc = gras_trp_tcp_peer_proc;
698 plug->peer_proc_set = gras_trp_tcp_peer_proc_set;
701 plug->socket_client = gras_trp_buf_socket_client;
702 plug->socket_server = gras_trp_buf_socket_server;
703 plug->socket_accept = gras_trp_buf_socket_accept;
704 plug->socket_close = gras_trp_buf_socket_close;
707 plug->send = gras_trp_iov_send;
709 plug->send = gras_trp_buf_send;
711 plug->recv = gras_trp_buf_recv;
713 plug->raw_send = gras_trp_tcp_send;
714 plug->raw_recv = gras_trp_tcp_recv;
716 plug->flush = gras_trp_bufiov_flush;
722 void gras_trp_buf_socket_client(gras_trp_plugin_t self,
725 /* OUT */ gras_socket_t sock)
728 gras_trp_sock_socket_client(NULL, host,port,sock);
729 gras_trp_buf_init_sock(sock);
733 * gras_trp_buf_socket_server:
735 * Open a socket used to receive messages.
737 void gras_trp_buf_socket_server(gras_trp_plugin_t self,
739 /* OUT */ gras_socket_t sock)
742 gras_trp_sock_socket_server(NULL, port, sock);
743 gras_trp_buf_init_sock(sock);
746 gras_socket_t gras_trp_buf_socket_accept(gras_socket_t sock)
748 return gras_trp_buf_init_sock(gras_trp_sock_socket_accept(sock));
751 void gras_trp_buf_socket_close(gras_socket_t sock)
753 gras_trp_bufdata_t *data = sock->bufdata;
755 if (data->in_buf.size != data->in_buf.pos) {
756 XBT_WARN("Socket closed, but %d bytes were unread (size=%d,pos=%d)",
757 data->in_buf.size - data->in_buf.pos,
758 data->in_buf.size, data->in_buf.pos);
760 if (data->in_buf.data)
761 free(data->in_buf.data);
763 if (data->out_buf.size != data->out_buf.pos) {
764 XBT_DEBUG("Flush the socket before closing (in=%d,out=%d)",
765 data->in_buf.size, data->out_buf.size);
766 gras_trp_bufiov_flush(sock);
768 if (data->out_buf.data)
769 free(data->out_buf.data);
772 if (data->in_buf_v) {
773 if (xbt_dynar_length(data->in_buf_v))
774 XBT_WARN("Socket closed, but some bytes were unread");
775 xbt_dynar_free(&data->in_buf_v);
777 if (data->out_buf_v) {
778 if (xbt_dynar_length(data->out_buf_v)) {
779 XBT_DEBUG("Flush the socket before closing");
780 gras_trp_bufiov_flush(sock);
782 xbt_dynar_free(&data->out_buf_v);
787 gras_trp_sock_socket_close(sock);
790 /****************************/
791 /****[ HELPER FUNCTIONS ]****/
792 /****************************/
795 * Returns the tcp protocol number from the network protocol data base, or -1 if not found
797 * getprotobyname() is not thread safe. We need to lock it.
799 static int _gras_tcp_proto_number(void)
801 struct protoent *fetchedEntry;
802 static int returnValue = 0;
804 if (returnValue == 0) {
805 fetchedEntry = getprotobyname("tcp");
806 if (fetchedEntry == NULL) {
807 XBT_VERB("getprotobyname(tcp) gave NULL");
810 returnValue = fetchedEntry->p_proto;
817 #ifdef HAVE_WINSOCK_H
818 #define RETSTR( x ) case x: return #x
820 const char *gras_wsa_err2string(int err)
829 RETSTR(WSAEWOULDBLOCK);
830 RETSTR(WSAEINPROGRESS);
833 RETSTR(WSAEDESTADDRREQ);
835 RETSTR(WSAEPROTOTYPE);
836 RETSTR(WSAENOPROTOOPT);
837 RETSTR(WSAEPROTONOSUPPORT);
838 RETSTR(WSAESOCKTNOSUPPORT);
839 RETSTR(WSAEOPNOTSUPP);
840 RETSTR(WSAEPFNOSUPPORT);
841 RETSTR(WSAEAFNOSUPPORT);
842 RETSTR(WSAEADDRINUSE);
843 RETSTR(WSAEADDRNOTAVAIL);
845 RETSTR(WSAENETUNREACH);
846 RETSTR(WSAENETRESET);
847 RETSTR(WSAECONNABORTED);
848 RETSTR(WSAECONNRESET);
852 RETSTR(WSAESHUTDOWN);
853 RETSTR(WSAETOOMANYREFS);
854 RETSTR(WSAETIMEDOUT);
855 RETSTR(WSAECONNREFUSED);
857 RETSTR(WSAENAMETOOLONG);
858 RETSTR(WSAEHOSTDOWN);
859 RETSTR(WSAEHOSTUNREACH);
860 RETSTR(WSAENOTEMPTY);
866 RETSTR(WSASYSNOTREADY);
867 RETSTR(WSAVERNOTSUPPORTED);
868 RETSTR(WSANOTINITIALISED);
873 RETSTR(WSAECANCELLED);
874 RETSTR(WSAEINVALIDPROCTABLE);
875 RETSTR(WSAEINVALIDPROVIDER);
876 RETSTR(WSASYSCALLFAILURE);
877 RETSTR(WSASERVICE_NOT_FOUND);
878 RETSTR(WSATYPE_NOT_FOUND);
879 RETSTR(WSA_E_NO_MORE);
880 RETSTR(WSA_E_CANCELLED);
882 #endif /* HAVE_WINSOCK2 */
884 RETSTR(WSAHOST_NOT_FOUND);
885 RETSTR(WSATRY_AGAIN);
886 RETSTR(WSANO_RECOVERY);
889 return "unknown WSA error";
891 #endif /* HAVE_WINSOCK_H */
893 /***********************************/
894 /****[ end of HELPER FUNCTIONS ]****/
895 /***********************************/