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Merged silc_1_1_branch to trunk.
[silc.git]
/
lib
/
silcutil
/
unix
/
silcunixnet.c
diff --git
a/lib/silcutil/unix/silcunixnet.c
b/lib/silcutil/unix/silcunixnet.c
index bc138cd943bd27a42060c6b8d71638c476f0d71f..e0befdc19979ca325a83cd39b6da9015e34a28f8 100644
(file)
--- a/
lib/silcutil/unix/silcunixnet.c
+++ b/
lib/silcutil/unix/silcunixnet.c
@@
-4,7
+4,7
@@
Author: Pekka Riikonen <priikone@silcnet.org>
Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 200
6
Pekka Riikonen
+ Copyright (C) 1997 - 200
7
Pekka Riikonen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@
-21,6
+21,8
@@
#include "silc.h"
#include "silcnet.h"
#include "silc.h"
#include "silcnet.h"
+/************************** Types and definitions ***************************/
+
#ifdef HAVE_IPV6
#define SIZEOF_SOCKADDR(so) ((so).sa.sa_family == AF_INET6 ? \
sizeof(so.sin6) : sizeof(so.sin))
#ifdef HAVE_IPV6
#define SIZEOF_SOCKADDR(so) ((so).sa.sa_family == AF_INET6 ? \
sizeof(so.sin6) : sizeof(so.sin))
@@
-36,6
+38,8
@@
typedef union {
#endif
} SilcSockaddr;
#endif
} SilcSockaddr;
+/************************ Static utility functions **************************/
+
static SilcBool silc_net_set_sockaddr(SilcSockaddr *addr, const char *ip_addr,
int port)
{
static SilcBool silc_net_set_sockaddr(SilcSockaddr *addr, const char *ip_addr,
int port)
{
@@
-81,6
+85,8
@@
static SilcBool silc_net_set_sockaddr(SilcSockaddr *addr, const char *ip_addr,
return TRUE;
}
return TRUE;
}
+/****************************** TCP Listener ********************************/
+
/* Deliver new stream to upper layer */
static void silc_net_accept_stream(SilcSocketStreamStatus status,
/* Deliver new stream to upper layer */
static void silc_net_accept_stream(SilcSocketStreamStatus status,
@@
-108,7
+114,6
@@
SILC_TASK_CALLBACK(silc_net_accept)
return;
/* Set socket options */
return;
/* Set socket options */
- silc_net_set_socket_nonblock(sock);
silc_net_set_socket_opt(sock, SOL_SOCKET, SO_REUSEADDR, 1);
/* Create socket stream */
silc_net_set_socket_opt(sock, SOL_SOCKET, SO_REUSEADDR, 1);
/* Create socket stream */
@@
-137,10
+142,8
@@
silc_net_tcp_create_listener(const char **local_ip_addr,
goto err;
listener = silc_calloc(1, sizeof(*listener));
goto err;
listener = silc_calloc(1, sizeof(*listener));
- if (!listener) {
- callback(SILC_NET_NO_MEMORY, NULL, context);
+ if (!listener)
return NULL;
return NULL;
- }
listener->schedule = schedule;
listener->callback = callback;
listener->context = context;
listener->schedule = schedule;
listener->callback = callback;
listener->context = context;
@@
-149,24
+152,20
@@
silc_net_tcp_create_listener(const char **local_ip_addr,
if (local_ip_count > 0) {
listener->socks = silc_calloc(local_ip_count, sizeof(*listener->socks));
if (local_ip_count > 0) {
listener->socks = silc_calloc(local_ip_count, sizeof(*listener->socks));
- if (!listener->socks) {
- callback(SILC_NET_NO_MEMORY, NULL, context);
+ if (!listener->socks)
return NULL;
return NULL;
- }
} else {
listener->socks = silc_calloc(1, sizeof(*listener->socks));
} else {
listener->socks = silc_calloc(1, sizeof(*listener->socks));
- if (!listener->socks) {
- callback(SILC_NET_NO_MEMORY, NULL, context);
+ if (!listener->socks)
return NULL;
return NULL;
- }
local_ip_count = 1;
}
/* Bind to local addresses */
for (i = 0; i < local_ip_count; i++) {
local_ip_count = 1;
}
/* Bind to local addresses */
for (i = 0; i < local_ip_count; i++) {
- SILC_LOG_DEBUG(("Binding to local address %s",
- local_ip_addr ? local_ip_addr[i] : ipany));
+ SILC_LOG_DEBUG(("Binding to local address %s
:%d
",
+ local_ip_addr ? local_ip_addr[i] : ipany
, port
));
/* Set sockaddr for server */
if (!silc_net_set_sockaddr(&server,
/* Set sockaddr for server */
if (!silc_net_set_sockaddr(&server,
@@
-185,20
+184,23
@@
silc_net_tcp_create_listener(const char **local_ip_addr,
rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_REUSEADDR, 1);
if (rval < 0) {
SILC_LOG_ERROR(("Cannot set socket options: %s", strerror(errno)));
rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_REUSEADDR, 1);
if (rval < 0) {
SILC_LOG_ERROR(("Cannot set socket options: %s", strerror(errno)));
+ close(sock);
goto err;
}
/* Bind the listener socket */
rval = bind(sock, &server.sa, SIZEOF_SOCKADDR(server));
if (rval < 0) {
goto err;
}
/* Bind the listener socket */
rval = bind(sock, &server.sa, SIZEOF_SOCKADDR(server));
if (rval < 0) {
- SILC_LOG_DEBUG(("Cannot bind socket: %s", strerror(errno)));
+ SILC_LOG_ERROR(("Cannot bind socket: %s", strerror(errno)));
+ close(sock);
goto err;
}
/* Specify that we are listenning */
goto err;
}
/* Specify that we are listenning */
- rval = listen(sock,
5
);
+ rval = listen(sock,
64
);
if (rval < 0) {
SILC_LOG_ERROR(("Cannot set socket listenning: %s", strerror(errno)));
if (rval < 0) {
SILC_LOG_ERROR(("Cannot set socket listenning: %s", strerror(errno)));
+ close(sock);
goto err;
}
goto err;
}
@@
-216,8
+218,6
@@
silc_net_tcp_create_listener(const char **local_ip_addr,
return listener;
err:
return listener;
err:
- if (callback)
- callback(SILC_NET_ERROR, NULL, context);
if (listener)
silc_net_close_listener(listener);
return NULL;
if (listener)
silc_net_close_listener(listener);
return NULL;
@@
-241,6
+241,8
@@
void silc_net_close_listener(SilcNetListener listener)
silc_free(listener);
}
silc_free(listener);
}
+/******************************* UDP Stream *********************************/
+
/* Create UDP stream */
SilcStream
/* Create UDP stream */
SilcStream
@@
-295,9
+297,6
@@
silc_net_udp_connect(const char *local_ip_addr, int local_port,
goto err;
}
goto err;
}
- /* Set socket to non-blocking mode */
- silc_net_set_socket_nonblock(sock);
-
/* Set to connected state if remote address is provided. */
if (remote_ip_addr && remote_port) {
if (!silc_net_set_sockaddr(&server, remote_ip_addr, remote_port))
/* Set to connected state if remote address is provided. */
if (remote_ip_addr && remote_port) {
if (!silc_net_set_sockaddr(&server, remote_ip_addr, remote_port))
@@
-312,17
+311,23
@@
silc_net_udp_connect(const char *local_ip_addr, int local_port,
/* Set send and receive buffer size */
#ifdef SO_SNDBUF
/* Set send and receive buffer size */
#ifdef SO_SNDBUF
- rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_SNDBUF, 65535);
+ rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_SNDBUF,
7
65535);
if (rval < 0) {
if (rval < 0) {
- SILC_LOG_ERROR(("Cannot set socket options: %s", strerror(errno)));
- goto err;
+ rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_SNDBUF, 65535);
+ if (rval < 0) {
+ SILC_LOG_ERROR(("Cannot set socket options: %s", strerror(errno)));
+ goto err;
+ }
}
#endif /* SO_SNDBUF */
#ifdef SO_RCVBUF
}
#endif /* SO_SNDBUF */
#ifdef SO_RCVBUF
- rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_RCVBUF, 65535);
+ rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_RCVBUF,
7
65535);
if (rval < 0) {
if (rval < 0) {
- SILC_LOG_ERROR(("Cannot set socket options: %s", strerror(errno)));
- goto err;
+ rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_RCVBUF, 65535);
+ if (rval < 0) {
+ SILC_LOG_ERROR(("Cannot set socket options: %s", strerror(errno)));
+ goto err;
+ }
}
#endif /* SO_RCVBUF */
}
#endif /* SO_RCVBUF */
@@
-446,6
+451,8
@@
int silc_net_udp_send(SilcStream stream,
return ret;
}
return ret;
}
+/******************************* TCP Stream *********************************/
+
/* Asynchronous TCP/IP connecting */
typedef struct {
/* Asynchronous TCP/IP connecting */
typedef struct {
@@
-453,7
+460,7
@@
typedef struct {
SilcSocketStreamStatus stream_status;
SilcStream stream;
SilcFSMStruct fsm;
SilcSocketStreamStatus stream_status;
SilcStream stream;
SilcFSMStruct fsm;
- SilcFSMEventStruct
sema
;
+ SilcFSMEventStruct
event
;
SilcAsyncOperation op;
SilcAsyncOperation sop;
char *local_ip;
SilcAsyncOperation op;
SilcAsyncOperation sop;
char *local_ip;
@@
-475,8
+482,7
@@
SILC_FSM_STATE(silc_net_connect_st_finish);
SILC_TASK_CALLBACK(silc_net_connect_wait)
{
SilcNetConnect conn = context;
SILC_TASK_CALLBACK(silc_net_connect_wait)
{
SilcNetConnect conn = context;
- SILC_FSM_EVENT_SIGNAL(&conn->sema);
- silc_schedule_task_del_by_fd(schedule, conn->sock);
+ SILC_FSM_EVENT_SIGNAL(&conn->event);
}
SILC_FSM_STATE(silc_net_connect_st_start)
}
SILC_FSM_STATE(silc_net_connect_st_start)
@@
-489,7
+495,7
@@
SILC_FSM_STATE(silc_net_connect_st_start)
if (conn->aborted) {
/** Aborted */
silc_fsm_next(fsm, silc_net_connect_st_finish);
if (conn->aborted) {
/** Aborted */
silc_fsm_next(fsm, silc_net_connect_st_finish);
- SILC_FSM_CONTINUE;
+
return
SILC_FSM_CONTINUE;
}
/* Do host lookup */
}
/* Do host lookup */
@@
-502,14
+508,14
@@
SILC_FSM_STATE(silc_net_connect_st_start)
/** Network unreachable */
conn->status = SILC_NET_HOST_UNREACHABLE;
silc_fsm_next(fsm, silc_net_connect_st_finish);
/** Network unreachable */
conn->status = SILC_NET_HOST_UNREACHABLE;
silc_fsm_next(fsm, silc_net_connect_st_finish);
- SILC_FSM_CONTINUE;
+
return
SILC_FSM_CONTINUE;
}
/* Set sockaddr for this connection */
if (!silc_net_set_sockaddr(&desthost, conn->ip_addr, conn->port)) {
/** Sockaddr failed */
silc_fsm_next(fsm, silc_net_connect_st_finish);
}
/* Set sockaddr for this connection */
if (!silc_net_set_sockaddr(&desthost, conn->ip_addr, conn->port)) {
/** Sockaddr failed */
silc_fsm_next(fsm, silc_net_connect_st_finish);
- SILC_FSM_CONTINUE;
+
return
SILC_FSM_CONTINUE;
}
/* Create the connection socket */
}
/* Create the connection socket */
@@
-525,7
+531,7
@@
SILC_FSM_STATE(silc_net_connect_st_start)
/** Cannot create socket */
SILC_LOG_ERROR(("Cannot create socket: %s", strerror(errno)));
silc_fsm_next(fsm, silc_net_connect_st_finish);
/** Cannot create socket */
SILC_LOG_ERROR(("Cannot create socket: %s", strerror(errno)));
silc_fsm_next(fsm, silc_net_connect_st_finish);
- SILC_FSM_CONTINUE;
+
return
SILC_FSM_CONTINUE;
}
/* Bind to the local address if provided */
}
/* Bind to the local address if provided */
@@
-544,22
+550,19
@@
SILC_FSM_STATE(silc_net_connect_st_start)
rval = connect(sock, &desthost.sa, SIZEOF_SOCKADDR(desthost));
if (rval < 0) {
if (errno != EINPROGRESS) {
rval = connect(sock, &desthost.sa, SIZEOF_SOCKADDR(desthost));
if (rval < 0) {
if (errno != EINPROGRESS) {
- /* retry using an IPv4 adress, if IPv6 didn't work */
- if (prefer_ipv6 && silc_net_is_ip6(conn->ip_addr)) {
- shutdown(sock, 2);
- close(sock);
+ shutdown(sock, 2);
+ close(sock);
+ /* Retry using an IPv4 adress, if IPv6 didn't work */
+ if (prefer_ipv6 && silc_net_is_ip6(conn->ip_addr)) {
prefer_ipv6 = FALSE;
goto retry;
}
prefer_ipv6 = FALSE;
goto retry;
}
- shutdown(sock, 2);
- close(sock);
-
/** Cannot connect to remote host */
SILC_LOG_ERROR(("Cannot connect to remote host: %s", strerror(errno)));
silc_fsm_next(fsm, silc_net_connect_st_finish);
/** Cannot connect to remote host */
SILC_LOG_ERROR(("Cannot connect to remote host: %s", strerror(errno)));
silc_fsm_next(fsm, silc_net_connect_st_finish);
- SILC_FSM_CONTINUE;
+
return
SILC_FSM_CONTINUE;
}
}
}
}
@@
-575,19
+578,20
@@
SILC_FSM_STATE(silc_net_connect_st_start)
/** Wait for connection */
silc_fsm_next(fsm, silc_net_connect_st_connected);
/** Wait for connection */
silc_fsm_next(fsm, silc_net_connect_st_connected);
- silc_fsm_event_init(&conn->
sema
, fsm);
+ silc_fsm_event_init(&conn->
event
, fsm);
silc_schedule_task_add_fd(silc_fsm_get_schedule(fsm), sock,
silc_net_connect_wait, conn);
silc_schedule_set_listen_fd(silc_fsm_get_schedule(fsm), sock,
SILC_TASK_WRITE, FALSE);
silc_schedule_task_add_fd(silc_fsm_get_schedule(fsm), sock,
silc_net_connect_wait, conn);
silc_schedule_set_listen_fd(silc_fsm_get_schedule(fsm), sock,
SILC_TASK_WRITE, FALSE);
- SILC_FSM_EVENT_WAIT(&conn->
sema
);
- SILC_FSM_CONTINUE;
+ SILC_FSM_EVENT_WAIT(&conn->
event
);
+
return
SILC_FSM_CONTINUE;
}
static void silc_net_connect_wait_stream(SilcSocketStreamStatus status,
SilcStream stream, void *context)
{
SilcNetConnect conn = context;
}
static void silc_net_connect_wait_stream(SilcSocketStreamStatus status,
SilcStream stream, void *context)
{
SilcNetConnect conn = context;
+ conn->sop = NULL;
conn->stream_status = status;
conn->stream = stream;
SILC_FSM_CALL_CONTINUE(&conn->fsm);
conn->stream_status = status;
conn->stream = stream;
SILC_FSM_CALL_CONTINUE(&conn->fsm);
@@
-601,15
+605,17
@@
SILC_FSM_STATE(silc_net_connect_st_connected)
if (conn->aborted) {
/** Aborted */
if (conn->aborted) {
/** Aborted */
+ silc_schedule_unset_listen_fd(schedule, conn->sock);
+ silc_schedule_task_del_by_fd(schedule, conn->sock);
silc_fsm_next(fsm, silc_net_connect_st_finish);
silc_fsm_next(fsm, silc_net_connect_st_finish);
- SILC_FSM_CONTINUE;
+
return
SILC_FSM_CONTINUE;
}
ret = silc_net_get_socket_opt(conn->sock, SOL_SOCKET, SO_ERROR,
&opt, &optlen);
}
ret = silc_net_get_socket_opt(conn->sock, SOL_SOCKET, SO_ERROR,
&opt, &optlen);
- silc_schedule_task_del_by_fd(schedule, conn->sock);
silc_schedule_unset_listen_fd(schedule, conn->sock);
silc_schedule_unset_listen_fd(schedule, conn->sock);
+ silc_schedule_task_del_by_fd(schedule, conn->sock);
if (ret != 0 || opt != 0) {
if (conn->retry) {
if (ret != 0 || opt != 0) {
if (conn->retry) {
@@
-618,33
+624,34
@@
SILC_FSM_STATE(silc_net_connect_st_connected)
conn->retry--;
silc_net_close_connection(conn->sock);
silc_fsm_next(fsm, silc_net_connect_st_start);
conn->retry--;
silc_net_close_connection(conn->sock);
silc_fsm_next(fsm, silc_net_connect_st_start);
- SILC_FSM_CONTINUE;
+
return
SILC_FSM_CONTINUE;
}
#if defined(ECONNREFUSED)
}
#if defined(ECONNREFUSED)
- if (
errno
== ECONNREFUSED)
+ if (
opt
== ECONNREFUSED)
conn->status = SILC_NET_CONNECTION_REFUSED;
#endif /* ECONNREFUSED */
#if defined(ETIMEDOUT)
conn->status = SILC_NET_CONNECTION_REFUSED;
#endif /* ECONNREFUSED */
#if defined(ETIMEDOUT)
- if (
errno
== ETIMEDOUT)
+ if (
opt
== ETIMEDOUT)
conn->status = SILC_NET_CONNECTION_TIMEOUT;
#endif /* ETIMEDOUT */
#if defined(ENETUNREACH)
conn->status = SILC_NET_CONNECTION_TIMEOUT;
#endif /* ETIMEDOUT */
#if defined(ENETUNREACH)
- if (
errno
== ENETUNREACH)
+ if (
opt
== ENETUNREACH)
conn->status = SILC_NET_HOST_UNREACHABLE;
#endif /* ENETUNREACH */
/** Connecting failed */
conn->status = SILC_NET_HOST_UNREACHABLE;
#endif /* ENETUNREACH */
/** Connecting failed */
- SILC_LOG_DEBUG(("Connecting failed
"
));
+ SILC_LOG_DEBUG(("Connecting failed
, error %s", strerror(opt)
));
silc_fsm_next(fsm, silc_net_connect_st_finish);
silc_fsm_next(fsm, silc_net_connect_st_finish);
- SILC_FSM_CONTINUE;
+
return
SILC_FSM_CONTINUE;
}
}
+ SILC_LOG_DEBUG(("TCP connection established"));
+
/** Connection created */
silc_fsm_next(fsm, silc_net_connect_st_stream);
SILC_FSM_CALL((conn->sop = silc_socket_tcp_stream_create(
/** Connection created */
silc_fsm_next(fsm, silc_net_connect_st_stream);
SILC_FSM_CALL((conn->sop = silc_socket_tcp_stream_create(
- conn->sock, FALSE, FALSE,
- schedule,
+ conn->sock, TRUE, FALSE, schedule,
silc_net_connect_wait_stream, conn)));
}
silc_net_connect_wait_stream, conn)));
}
@@
-655,7
+662,7
@@
SILC_FSM_STATE(silc_net_connect_st_stream)
if (conn->aborted) {
/** Aborted */
silc_fsm_next(fsm, silc_net_connect_st_finish);
if (conn->aborted) {
/** Aborted */
silc_fsm_next(fsm, silc_net_connect_st_finish);
- SILC_FSM_CONTINUE;
+
return
SILC_FSM_CONTINUE;
}
if (conn->stream_status != SILC_SOCKET_OK) {
}
if (conn->stream_status != SILC_SOCKET_OK) {
@@
-667,19
+674,14
@@
SILC_FSM_STATE(silc_net_connect_st_stream)
else
conn->status = SILC_NET_ERROR;
silc_fsm_next(fsm, silc_net_connect_st_finish);
else
conn->status = SILC_NET_ERROR;
silc_fsm_next(fsm, silc_net_connect_st_finish);
- SILC_FSM_CONTINUE;
+
return
SILC_FSM_CONTINUE;
}
}
- /* Set stream information */
- silc_socket_stream_set_info(conn->stream,
- !silc_net_is_ip(conn->remote) ? conn->remote :
- conn->ip_addr, conn->ip_addr, conn->port);
-
/** Stream created successfully */
/** Stream created successfully */
- SILC_LOG_DEBUG(("Connected successfully
"
));
+ SILC_LOG_DEBUG(("Connected successfully
, sock %d", conn->sock
));
conn->status = SILC_NET_OK;
silc_fsm_next(fsm, silc_net_connect_st_finish);
conn->status = SILC_NET_OK;
silc_fsm_next(fsm, silc_net_connect_st_finish);
- SILC_FSM_CONTINUE;
+
return
SILC_FSM_CONTINUE;
}
SILC_FSM_STATE(silc_net_connect_st_finish)
}
SILC_FSM_STATE(silc_net_connect_st_finish)
@@
-691,11
+693,9
@@
SILC_FSM_STATE(silc_net_connect_st_finish)
conn->callback(conn->status, conn->stream, conn->context);
if (conn->op)
silc_async_free(conn->op);
conn->callback(conn->status, conn->stream, conn->context);
if (conn->op)
silc_async_free(conn->op);
- if (conn->sop)
- silc_async_free(conn->sop);
}
}
- SILC_FSM_FINISH;
+
return
SILC_FSM_FINISH;
}
static void silc_net_connect_abort(SilcAsyncOperation op, void *context)
}
static void silc_net_connect_abort(SilcAsyncOperation op, void *context)
@@
-704,8
+704,10
@@
static void silc_net_connect_abort(SilcAsyncOperation op, void *context)
conn->aborted = TRUE;
/* Abort underlaying stream creation too */
conn->aborted = TRUE;
/* Abort underlaying stream creation too */
- if (conn->sop)
- silc_async_abort(conn->op, NULL, NULL);
+ if (conn->sop) {
+ silc_async_abort(conn->sop, NULL, NULL);
+ conn->sop = NULL;
+ }
}
static void silc_net_connect_destructor(SilcFSM fsm, void *fsm_context,
}
static void silc_net_connect_destructor(SilcFSM fsm, void *fsm_context,
@@
-743,6
+745,7
@@
SilcAsyncOperation silc_net_tcp_connect(const char *local_ip_addr,
/* Start async operation */
conn->op = silc_async_alloc(silc_net_connect_abort, NULL, conn);
if (!conn->op) {
/* Start async operation */
conn->op = silc_async_alloc(silc_net_connect_abort, NULL, conn);
if (!conn->op) {
+ silc_free(conn);
callback(SILC_NET_NO_MEMORY, NULL, context);
return NULL;
}
callback(SILC_NET_NO_MEMORY, NULL, context);
return NULL;
}
@@
-751,6
+754,9
@@
SilcAsyncOperation silc_net_tcp_connect(const char *local_ip_addr,
conn->local_ip = strdup(local_ip_addr);
conn->remote = strdup(remote_ip_addr);
if (!conn->remote) {
conn->local_ip = strdup(local_ip_addr);
conn->remote = strdup(remote_ip_addr);
if (!conn->remote) {
+ silc_async_free(conn->op);
+ silc_free(conn->local_ip);
+ silc_free(conn);
callback(SILC_NET_NO_MEMORY, NULL, context);
return NULL;
}
callback(SILC_NET_NO_MEMORY, NULL, context);
return NULL;
}
@@
-770,14
+776,15
@@
SilcAsyncOperation silc_net_tcp_connect(const char *local_ip_addr,
void silc_net_close_connection(int sock)
{
void silc_net_close_connection(int sock)
{
+ SILC_LOG_DEBUG(("Closing sock %d", sock));
close(sock);
}
/* Set's the socket to non-blocking mode. */
close(sock);
}
/* Set's the socket to non-blocking mode. */
-int silc_net_set_socket_nonblock(
in
t sock)
+int silc_net_set_socket_nonblock(
SilcSocke
t sock)
{
{
- return fcntl(sock, F_SETFL, fcntl(sock, F_GETFL, 0) | O_NONBLOCK);
+ return fcntl(
(int)
sock, F_SETFL, fcntl(sock, F_GETFL, 0) | O_NONBLOCK);
}
/* Converts the IP number string from numbers-and-dots notation to
}
/* Converts the IP number string from numbers-and-dots notation to