1 /* buffered transport using the TCP plugin or a custom 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 "xbt/xbt_socket_private.h"
18 #include "gras/Transport/transport_interface.h" /* FIXME */
19 #include "gras/Virtu/virtu_interface.h" /* FIXME */
20 #include "gras/Msg/msg_interface.h" /* FIXME */
21 extern int gras_trp_libdata_id; /* FIXME */
23 /* FIXME maybe READV is sometime a good thing? */
30 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_trp_tcp, xbt_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_xbt_trp_tcp_sock_data_t, *xbt_trp_tcp_sock_data_t;
44 typedef enum { buffering_buf, buffering_iov } buffering_kind;
49 int pos; /* for receive; not exchanged over the net */
52 struct s_xbt_trp_bufdata {
55 xbt_trp_buf_t out_buf;
59 xbt_dynar_t out_buf_v;
66 /*****************************/
67 /****[ SOCKET MANAGEMENT ]****/
68 /*****************************/
70 /* we exchange port number on client side on socket creation,
71 so we need to be able to talk right now. */
72 static XBT_INLINE void xbt_trp_tcp_send(xbt_socket_t sock,
74 unsigned long int size);
75 static int xbt_trp_tcp_recv(xbt_socket_t sock, char *data,
76 unsigned long int size);
78 static int xbt_trp_tcp_proto_number(void);
79 static void xbt_trp_sock_socket_close(xbt_socket_t sock);
82 void xbt_trp_sock_socket_client(xbt_trp_plugin_t ignored,
85 /* OUT */ xbt_socket_t sock)
87 xbt_trp_tcp_sock_data_t sockdata = xbt_new(s_xbt_trp_tcp_sock_data_t,1);
88 sockdata->port = port;
89 sockdata->peer_proc = NULL;
90 sockdata->peer_port = port;
91 sockdata->peer_name = (char *) xbt_strdup(host ? host : "localhost");
92 sock->data = sockdata;
94 struct sockaddr_in addr;
96 struct in_addr *haddr;
97 int size = sock->buf_size;
98 uint32_t myport = htonl(((gras_trp_procdata_t)
100 (gras_trp_libdata_id))->myport);
102 sock->incoming = 1; /* TCP sockets are duplex'ed */
104 sock->sd = socket(AF_INET, SOCK_STREAM, 0);
107 THROWF(system_error, 0, "Failed to create socket: %s",
108 sock_errstr(sock_errno));
112 (sock->sd, SOL_SOCKET, SO_RCVBUF, (char *) &size, sizeof(size))
113 || setsockopt(sock->sd, SOL_SOCKET, SO_SNDBUF, (char *) &size,
115 XBT_VERB("setsockopt failed, cannot set buffer size: %s",
116 sock_errstr(sock_errno));
119 he = gethostbyname(sockdata->peer_name);
121 THROWF(system_error, 0, "Failed to lookup hostname %s: %s",
122 sockdata->peer_name, sock_errstr(sock_errno));
125 haddr = ((struct in_addr *) (he->h_addr_list)[0]);
127 memset(&addr, 0, sizeof(struct sockaddr_in));
128 memcpy(&addr.sin_addr, haddr, sizeof(struct in_addr));
129 addr.sin_family = AF_INET;
130 addr.sin_port = htons(sockdata->peer_port);
132 if (connect(sock->sd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
134 THROWF(system_error, 0,
135 "Failed to connect socket to %s:%d (%s)",
136 sockdata->peer_name, sockdata->peer_port, sock_errstr(sock_errno));
139 xbt_trp_tcp_send(sock, (char *) &myport, sizeof(uint32_t));
140 XBT_DEBUG("peerport sent to %d", sockdata->peer_port);
142 XBT_VERB("Connect to %s:%d (sd=%d, port %d here)",
143 sockdata->peer_name, sockdata->peer_port, sock->sd, sockdata->port);
147 * gras_trp_sock_socket_server:
149 * Open a socket used to receive messages.
152 void xbt_trp_sock_socket_server(xbt_trp_plugin_t ignored,
156 int size = sock->buf_size;
158 struct sockaddr_in server;
160 xbt_trp_tcp_sock_data_t sockdata = xbt_new(s_xbt_trp_tcp_sock_data_t,1);
161 sockdata->port = port;
162 sockdata->peer_port = -1;
163 sockdata->peer_name = NULL;
164 sockdata->peer_proc = NULL;
165 sock->data = sockdata;
167 sock->outgoing = 1; /* TCP => duplex mode */
169 server.sin_port = htons((u_short) sockdata->port);
170 server.sin_addr.s_addr = INADDR_ANY;
171 server.sin_family = AF_INET;
172 if ((sock->sd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
173 THROWF(system_error, 0, "Socket allocation failed: %s",
174 sock_errstr(sock_errno));
177 (sock->sd, SOL_SOCKET, SO_REUSEADDR, (char *) &on, sizeof(on)))
178 THROWF(system_error, 0,
179 "setsockopt failed, cannot condition the socket: %s",
180 sock_errstr(sock_errno));
182 if (setsockopt(sock->sd, SOL_SOCKET, SO_RCVBUF,
183 (char *) &size, sizeof(size))
184 || setsockopt(sock->sd, SOL_SOCKET, SO_SNDBUF,
185 (char *) &size, sizeof(size))) {
186 XBT_VERB("setsockopt failed, cannot set buffer size: %s",
187 sock_errstr(sock_errno));
190 if (bind(sock->sd, (struct sockaddr *) &server, sizeof(server)) == -1) {
192 THROWF(system_error, 0,
193 "Cannot bind to port %d: %s", sockdata->port,
194 sock_errstr(sock_errno));
197 XBT_DEBUG("Listen on port %d (sd=%d)", sockdata->port, sock->sd);
198 if (listen(sock->sd, 5) < 0) {
200 THROWF(system_error, 0,
201 "Cannot listen on port %d: %s",
202 sockdata->port, sock_errstr(sock_errno));
205 XBT_VERB("Openned a server socket on port %d (sd=%d)", sockdata->port,
209 static xbt_socket_t xbt_trp_sock_socket_accept(xbt_socket_t sock)
213 struct sockaddr_in peer_in;
214 socklen_t peer_in_len = sizeof(peer_in);
221 socklen_t s = sizeof(int);
228 xbt_socket_new_ext(1, &res, sock->plugin, sock->buf_size, 0);
230 sd = accept(sock->sd, (struct sockaddr *) &peer_in, &peer_in_len);
231 tmp_errno = sock_errno;
234 xbt_trp_sock_socket_close(sock);
235 THROWF(system_error, 0,
236 "Accept failed (%s). Droping server socket.",
237 sock_errstr(tmp_errno));
240 if (xbt_trp_tcp_proto_number() != -1)
241 if (setsockopt(sd, xbt_trp_tcp_proto_number(), TCP_NODELAY, (char *) &i,s))
244 if (setsockopt(sd, SOL_SOCKET, SO_KEEPALIVE, (char *) &i, s))
248 THROWF(system_error, 0,
249 "setsockopt failed, cannot condition the socket: %s",
250 sock_errstr(tmp_errno));
252 size = sock->buf_size;
253 if (setsockopt(sd, SOL_SOCKET, SO_RCVBUF, (char *) &size, sizeof(size))
254 || setsockopt(sd, SOL_SOCKET, SO_SNDBUF, (char *) &size,
256 XBT_VERB("setsockopt failed, cannot set buffer size: %s",
257 sock_errstr(tmp_errno));
259 res->plugin = sock->plugin;
260 res->incoming = sock->incoming;
261 res->outgoing = sock->outgoing;
264 xbt_trp_tcp_sock_data_t sockdata = xbt_new(s_xbt_trp_tcp_sock_data_t, 1);
266 res->data = sockdata;
268 xbt_trp_tcp_recv(res, (char *) &hisport, sizeof(hisport));
269 sockdata->peer_port = ntohl(hisport);
270 XBT_DEBUG("peerport %d received", sockdata->peer_port);
272 /* FIXME: Lock to protect inet_ntoa */
273 if (((struct sockaddr *) &peer_in)->sa_family != AF_INET) {
274 sockdata->peer_name = (char *) strdup("unknown");
276 struct in_addr addrAsInAddr;
279 addrAsInAddr.s_addr = peer_in.sin_addr.s_addr;
281 tmp = inet_ntoa(addrAsInAddr);
283 sockdata->peer_name = (char *) strdup(tmp);
285 sockdata->peer_name = (char *) strdup("unknown");
289 XBT_VERB("Accepted from %s:%d (sd=%d)", sockdata->peer_name, sockdata->peer_port, sd);
290 xbt_dynar_push(((gras_trp_procdata_t)
291 gras_libdata_by_id(gras_trp_libdata_id))->sockets, &res);
292 /* FIXME we depend on GRAS here */
298 static void xbt_trp_sock_socket_close(xbt_socket_t sock)
301 return; /* close only once */
303 free(((xbt_trp_tcp_sock_data_t)sock->data)->peer_name);
306 XBT_VERB("close tcp connection %d", sock->sd);
308 gras_msg_listener_close_socket(sock->sd); /* FIXME */
311 /************************************/
312 /****[ end of SOCKET MANAGEMENT ]****/
313 /************************************/
316 /************************************/
317 /****[ UNBUFFERED DATA EXCHANGE ]****/
318 /************************************/
319 /* Temptation to merge this with file data exchange is great,
320 but doesn't work on BillWare (see tcp_write() in portable.h) */
321 static XBT_INLINE void xbt_trp_tcp_send(xbt_socket_t sock,
323 unsigned long int size)
328 status = tcp_write(sock->sd, data, (size_t) size);
329 XBT_DEBUG("write(%d, %p, %lu);", sock->sd, data, size);
333 if (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)
335 if (errno == EINTR || errno == EAGAIN)
339 THROWF(system_error, 0, "write(%d,%p,%lu) failed: %s",
340 sock->sd, data, size, sock_errstr(sock_errno));
347 THROWF(system_error, 0, "file descriptor closed (%s)",
348 sock_errstr(sock_errno));
353 static XBT_INLINE int
354 xbt_trp_tcp_recv_withbuffer(xbt_socket_t sock,
356 unsigned long int size,
357 unsigned long int bufsize)
362 data[0] = sock->recvd_val;
371 XBT_DEBUG("read(%d, %p, %lu) got %d so far (%s)",
372 sock->sd, data + got, bufsize, got,
373 hexa_str((unsigned char *) data, got, 0));
374 status = tcp_read(sock->sd, data + got, (size_t) bufsize);
377 THROWF(system_error, 0,
378 "read(%d,%p,%lu) from %s:%d failed: %s; got %d so far",
379 sock->sd, data + got, size, xbt_socket_peer_name(sock),
380 xbt_socket_peer_port(sock), sock_errstr(sock_errno), got);
382 XBT_DEBUG("Got %d more bytes (%s)", status,
383 hexa_str((unsigned char *) data + got, status, 0));
389 THROWF(system_error, errno,
390 "Socket closed by remote side (got %d bytes before this)",
398 static int xbt_trp_tcp_recv(xbt_socket_t sock,
400 unsigned long int size)
402 return xbt_trp_tcp_recv_withbuffer(sock, data, size, size);
406 /*******************************************/
407 /****[ end of UNBUFFERED DATA EXCHANGE ]****/
408 /*******************************************/
410 /**********************************/
411 /****[ BUFFERED DATA EXCHANGE ]****/
412 /**********************************/
414 /* Make sure the data is sent */
415 static void xbt_trp_bufiov_flush(xbt_socket_t sock)
421 xbt_trp_bufdata_t *data = sock->bufdata;
425 if (data->out == buffering_buf) {
426 if (XBT_LOG_ISENABLED(xbt_trp_tcp, xbt_log_priority_debug))
427 hexa_print("chunk to send ",
428 (unsigned char *) data->out_buf.data, data->out_buf.size);
429 if ((data->out_buf.size - data->out_buf.pos) != 0) {
430 XBT_DEBUG("Send the chunk (size=%d) to %s:%d", data->out_buf.size,
431 xbt_socket_peer_name(sock), xbt_socket_peer_port(sock));
432 xbt_trp_tcp_send(sock, data->out_buf.data, data->out_buf.size);
433 XBT_VERB("Chunk sent (size=%d)", data->out_buf.size);
434 data->out_buf.size = 0;
438 if (data->out == buffering_iov) {
439 XBT_DEBUG("Flush out iov");
440 vect = sock->bufdata->out_buf_v;
441 if ((size = xbt_dynar_length(vect))) {
442 XBT_DEBUG("Flush %d chunks out of this socket", size);
443 writev(sock->sd, xbt_dynar_get_ptr(vect, 0), size);
444 xbt_dynar_reset(vect);
446 data->out_buf.size = 0; /* reset the buffer containing non-stable data */
449 if (data->in == buffering_iov) {
450 XBT_DEBUG("Flush in iov");
451 vect = sock->bufdata->in_buf_v;
452 if ((size = xbt_dynar_length(vect))) {
453 XBT_DEBUG("Get %d chunks from of this socket", size);
454 readv(sock->sd, xbt_dynar_get_ptr(vect, 0), size);
455 xbt_dynar_reset(vect);
462 xbt_trp_buf_send(xbt_socket_t sock,
464 unsigned long int size,
468 xbt_trp_bufdata_t *data = (xbt_trp_bufdata_t *) sock->bufdata;
473 while (chunk_pos < size) {
474 /* size of the chunk to receive in that shot */
476 min(size - chunk_pos, data->buffsize - data->out_buf.size);
477 XBT_DEBUG("Set the chars %d..%ld into the buffer; size=%lu, ctn=(%s)",
479 data->out_buf.size + thissize - 1, size,
480 hexa_str((unsigned char *) chunk, thissize, 0));
482 memcpy(data->out_buf.data + data->out_buf.size, chunk + chunk_pos,
485 data->out_buf.size += thissize;
486 chunk_pos += thissize;
487 XBT_DEBUG("New pos = %d; Still to send = %lu of %lu; ctn sofar=(%s)",
488 data->out_buf.size, size - chunk_pos, size,
489 hexa_str((unsigned char *) chunk, chunk_pos, 0));
491 if (data->out_buf.size == data->buffsize) /* out of space. Flush it */
492 xbt_trp_bufiov_flush(sock);
499 xbt_trp_buf_recv(xbt_socket_t sock, char *chunk, unsigned long int size)
502 xbt_trp_bufdata_t *data = sock->bufdata;
503 long int chunk_pos = 0;
507 while (chunk_pos < size) {
508 /* size of the chunk to receive in that shot */
511 if (data->in_buf.size == data->in_buf.pos) { /* out of data. Get more */
513 XBT_DEBUG("Get more data (size=%d,bufsize=%d)",
514 (int) MIN(size - chunk_pos, data->buffsize),
515 (int) data->buffsize);
518 xbt_trp_tcp_recv_withbuffer(sock, data->in_buf.data,
519 MIN(size - chunk_pos, data->buffsize),
522 data->in_buf.pos = 0;
525 thissize = min(size - chunk_pos, data->in_buf.size - data->in_buf.pos);
526 memcpy(chunk + chunk_pos, data->in_buf.data + data->in_buf.pos,
529 data->in_buf.pos += thissize;
530 chunk_pos += thissize;
531 XBT_DEBUG("New pos = %d; Still to receive = %lu of %lu. Ctn so far=(%s)",
532 data->in_buf.pos, size - chunk_pos, size,
533 hexa_str((unsigned char *) chunk, chunk_pos, 0));
535 /* indicate on need to the gras_select function that there is more to read on this socket so that it does not actually select */
536 sock->moredata = (data->in_buf.size > data->in_buf.pos);
537 XBT_DEBUG("There is %smore data", (sock->moredata ? "" : "no "));
543 /*****************************************/
544 /****[ end of BUFFERED DATA EXCHANGE ]****/
545 /*****************************************/
547 /********************************/
548 /****[ VECTOR DATA EXCHANGE ]****/
549 /********************************/
552 xbt_trp_iov_send(xbt_socket_t sock,
553 const char *chunk, unsigned long int size, int stable)
556 xbt_trp_bufdata_t *data = (xbt_trp_bufdata_t *) sock->bufdata;
559 XBT_DEBUG("Buffer one chunk to be sent later (%s)",
560 hexa_str((char *) chunk, size, 0));
562 elm.iov_len = (size_t) size;
565 /* data storage won't last until flush. Save it in a buffer if we can */
567 if (size > data->buffsize - data->out_buf.size) {
569 flush the socket, using data in its actual storage */
570 elm.iov_base = (void *) chunk;
571 xbt_dynar_push(data->out_buf_v, &elm);
573 xbt_trp_bufiov_flush(sock);
576 /* buffer big enough:
577 copy data into it, and chain it for upcoming writev */
578 memcpy(data->out_buf.data + data->out_buf.size, chunk, size);
579 elm.iov_base = (void *) (data->out_buf.data + data->out_buf.size);
580 data->out_buf.size += size;
582 xbt_dynar_push(data->out_buf_v, &elm);
586 /* data storage stable. Chain it */
588 elm.iov_base = (void *) chunk;
589 xbt_dynar_push(data->out_buf_v, &elm);
594 xbt_trp_iov_recv(gras_socket_t sock, char *chunk, unsigned long int size)
598 XBT_DEBUG("Buffer one chunk to be received later");
599 elm.iov_base = (void *) chunk;
600 elm.iov_len = (size_t) size;
601 xbt_dynar_push(sock->bufdata->in_buf_v, &elm);
607 /***************************************/
608 /****[ end of VECTOR DATA EXCHANGE ]****/
609 /***************************************/
613 *** Prototypes of BUFFERED
615 static xbt_socket_t xbt_trp_buf_init_sock(xbt_socket_t sock);
616 static void xbt_trp_buf_socket_client(xbt_trp_plugin_t self,
620 static void xbt_trp_buf_socket_server(xbt_trp_plugin_t self,
623 static xbt_socket_t xbt_trp_buf_socket_accept(xbt_socket_t sock);
625 static void xbt_trp_buf_socket_close(xbt_socket_t sd);
628 static xbt_socket_t xbt_trp_buf_init_sock(xbt_socket_t sock)
630 xbt_trp_bufdata_t *data = xbt_new(xbt_trp_bufdata_t, 1);
632 data->buffsize = 100 * 1024; /* 100k */
634 data->in_buf.size = 0;
635 data->in_buf.data = xbt_malloc(data->buffsize);
636 data->in_buf.pos = 0; /* useless, indeed, since size==pos */
638 data->out_buf.size = 0;
639 data->out_buf.data = xbt_malloc(data->buffsize);
640 data->out_buf.pos = data->out_buf.size;
643 data->in_buf_v = data->out_buf_v = NULL;
644 data->in_buf_v = xbt_dynar_new(sizeof(struct iovec), NULL);
645 data->out_buf_v = xbt_dynar_new(sizeof(struct iovec), NULL);
646 data->out = buffering_iov;
648 data->out = buffering_buf;
651 data->in = buffering_buf;
653 sock->bufdata = data;
658 *** Info about who's speaking
660 static int xbt_trp_tcp_my_port(xbt_socket_t s) {
661 xbt_trp_tcp_sock_data_t sockdata = s->data;
662 return sockdata->port;
665 static int xbt_trp_tcp_peer_port(xbt_socket_t s) {
666 xbt_trp_tcp_sock_data_t sockdata = s->data;
667 return sockdata->peer_port;
670 static const char* xbt_trp_tcp_peer_name(xbt_socket_t s) {
671 xbt_trp_tcp_sock_data_t sockdata = s->data;
672 return sockdata->peer_name;
675 static const char* xbt_trp_tcp_peer_proc(xbt_socket_t s) {
676 xbt_trp_tcp_sock_data_t sockdata = s->data;
677 return sockdata->peer_proc;
680 static void xbt_trp_tcp_peer_proc_set(xbt_socket_t s,char *name) {
681 xbt_trp_tcp_sock_data_t sockdata = s->data;
682 sockdata->peer_proc = xbt_strdup(name);
688 void xbt_trp_tcp_setup(xbt_trp_plugin_t plug)
690 plug->my_port = xbt_trp_tcp_my_port;
691 plug->peer_port = xbt_trp_tcp_peer_port;
692 plug->peer_name = xbt_trp_tcp_peer_name;
693 plug->peer_proc = xbt_trp_tcp_peer_proc;
694 plug->peer_proc_set = xbt_trp_tcp_peer_proc_set;
697 plug->socket_client = xbt_trp_buf_socket_client;
698 plug->socket_server = xbt_trp_buf_socket_server;
699 plug->socket_accept = xbt_trp_buf_socket_accept;
700 plug->socket_close = xbt_trp_buf_socket_close;
703 plug->send = xbt_trp_iov_send;
705 plug->send = xbt_trp_buf_send;
707 plug->recv = xbt_trp_buf_recv;
709 plug->raw_send = xbt_trp_tcp_send;
710 plug->raw_recv = xbt_trp_tcp_recv;
712 plug->flush = xbt_trp_bufiov_flush;
718 static void xbt_trp_buf_socket_client(xbt_trp_plugin_t self,
721 /* OUT */ xbt_socket_t sock)
723 xbt_trp_sock_socket_client(NULL, host, port, sock);
724 xbt_trp_buf_init_sock(sock);
728 * xbt_trp_buf_socket_server:
730 * Open a socket used to receive messages.
732 static void xbt_trp_buf_socket_server(xbt_trp_plugin_t self,
734 /* OUT */ xbt_socket_t sock)
736 xbt_trp_sock_socket_server(NULL, port, sock);
737 xbt_trp_buf_init_sock(sock);
740 static xbt_socket_t xbt_trp_buf_socket_accept(xbt_socket_t sock)
742 return xbt_trp_buf_init_sock(xbt_trp_sock_socket_accept(sock));
745 static void xbt_trp_buf_socket_close(xbt_socket_t sock)
747 xbt_trp_bufdata_t *data = sock->bufdata;
749 if (data->in_buf.size != data->in_buf.pos) {
750 XBT_WARN("Socket closed, but %d bytes were unread (size=%d,pos=%d)",
751 data->in_buf.size - data->in_buf.pos,
752 data->in_buf.size, data->in_buf.pos);
754 free(data->in_buf.data);
756 if (data->out_buf.size != data->out_buf.pos) {
757 XBT_DEBUG("Flush the socket before closing (in=%d,out=%d)",
758 data->in_buf.size, data->out_buf.size);
759 xbt_trp_bufiov_flush(sock);
761 free(data->out_buf.data);
764 if (data->in_buf_v) {
765 if (!xbt_dynar_is_empty(data->in_buf_v))
766 XBT_WARN("Socket closed, but some bytes were unread");
767 xbt_dynar_free(&data->in_buf_v);
769 if (data->out_buf_v) {
770 if (!xbt_dynar_is_empty(data->out_buf_v)) {
771 XBT_DEBUG("Flush the socket before closing");
772 xbt_trp_bufiov_flush(sock);
774 xbt_dynar_free(&data->out_buf_v);
779 xbt_trp_sock_socket_close(sock);
782 /****************************/
783 /****[ HELPER FUNCTIONS ]****/
784 /****************************/
787 * Returns the tcp protocol number from the network protocol data base, or -1 if not found
789 * getprotobyname() is not thread safe. We need to lock it.
791 static int xbt_trp_tcp_proto_number(void)
793 struct protoent *fetchedEntry;
794 static int returnValue = 0;
796 if (returnValue == 0) {
797 fetchedEntry = getprotobyname("tcp");
798 if (fetchedEntry == NULL) {
799 XBT_VERB("getprotobyname(tcp) gave NULL");
802 returnValue = fetchedEntry->p_proto;
809 #ifdef HAVE_WINSOCK_H
810 #define RETSTR( x ) case x: return #x
812 const char *xbt_wsa_err2string(int err)
821 RETSTR(WSAEWOULDBLOCK);
822 RETSTR(WSAEINPROGRESS);
825 RETSTR(WSAEDESTADDRREQ);
827 RETSTR(WSAEPROTOTYPE);
828 RETSTR(WSAENOPROTOOPT);
829 RETSTR(WSAEPROTONOSUPPORT);
830 RETSTR(WSAESOCKTNOSUPPORT);
831 RETSTR(WSAEOPNOTSUPP);
832 RETSTR(WSAEPFNOSUPPORT);
833 RETSTR(WSAEAFNOSUPPORT);
834 RETSTR(WSAEADDRINUSE);
835 RETSTR(WSAEADDRNOTAVAIL);
837 RETSTR(WSAENETUNREACH);
838 RETSTR(WSAENETRESET);
839 RETSTR(WSAECONNABORTED);
840 RETSTR(WSAECONNRESET);
844 RETSTR(WSAESHUTDOWN);
845 RETSTR(WSAETOOMANYREFS);
846 RETSTR(WSAETIMEDOUT);
847 RETSTR(WSAECONNREFUSED);
849 RETSTR(WSAENAMETOOLONG);
850 RETSTR(WSAEHOSTDOWN);
851 RETSTR(WSAEHOSTUNREACH);
852 RETSTR(WSAENOTEMPTY);
858 RETSTR(WSASYSNOTREADY);
859 RETSTR(WSAVERNOTSUPPORTED);
860 RETSTR(WSANOTINITIALISED);
863 #ifdef HAVE_WINSOCK2_H
865 RETSTR(WSAECANCELLED);
866 RETSTR(WSAEINVALIDPROCTABLE);
867 RETSTR(WSAEINVALIDPROVIDER);
868 RETSTR(WSASYSCALLFAILURE);
869 RETSTR(WSASERVICE_NOT_FOUND);
870 RETSTR(WSATYPE_NOT_FOUND);
871 RETSTR(WSA_E_NO_MORE);
872 RETSTR(WSA_E_CANCELLED);
874 #endif /* HAVE_WINSOCK2_H */
876 RETSTR(WSAHOST_NOT_FOUND);
877 RETSTR(WSATRY_AGAIN);
878 RETSTR(WSANO_RECOVERY);
881 return "unknown WSA error";
883 #endif /* HAVE_WINSOCK_H */
885 /***********************************/
886 /****[ end of HELPER FUNCTIONS ]****/
887 /***********************************/