aniani/icecast-common
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Code

a few cleanups and a fix for async connects

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svn path=/trunk/net/; revision=5821
This commit is contained in:
Karl Heyes 2004-02-12 21:28:35 +00:00
parent 3165c25cd3
commit 5f34462604
1 changed files with 77 additions and 33 deletions
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110
net/sock.c
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@ -120,6 +120,15 @@ int sock_error(void)
#endif
}
static void sock_set_error(int val)
{
#ifdef _WIN32
WSASetLastError (val);
#else
errno = val;
#endif
}
/* sock_recoverable
**
** determines if the socket error is recoverable
@ -127,23 +136,43 @@ int sock_error(void)
*/
int sock_recoverable(int error)
{
return (error == 0 || error == EAGAIN || error == EINTR ||
error == EINPROGRESS || error == EWOULDBLOCK);
switch (error)
{
case 0:
case EAGAIN:
case EINTR:
case EINPROGRESS:
#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
case EWOULDBLOCK:
#endif
#ifdef ERESTART
case ERESTART:
#endif
return 1;
default:
return 0;
}
}
int sock_stalled (int error)
{
return error == EAGAIN || error == EINPROGRESS || error == EWOULDBLOCK ||
error == EALREADY;
switch (error)
{
case EAGAIN:
case EINPROGRESS:
case EALREADY:
#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
case EWOULDBLOCK:
#endif
#ifdef ERESTART
case ERESTART:
#endif
return 1;
default:
return 0;
}
}
#if 0
/* what is this??? */
static int sock_success (int error)
{
return error == 0;
}
#endif
static int sock_connect_pending (int error)
{
@ -420,7 +449,7 @@ int sock_read_line(sock_t sock, char *buff, const int len)
}
/* see if a connection can be written to
** return -1 unable to check
** return -1 for failure
** return 0 for not yet
** return 1 for ok
*/
@ -429,24 +458,33 @@ int sock_connected (int sock, unsigned timeout)
fd_set wfds;
int val = SOCK_ERROR;
socklen_t size = sizeof val;
struct timeval tv;
struct timeval tv, *timeval = NULL;
tv.tv_sec = timeout;
tv.tv_usec = 0;
if (timeout)
{
tv.tv_sec = timeout;
tv.tv_usec = 0;
timeval = &tv;
}
FD_ZERO(&wfds);
FD_SET(sock, &wfds);
switch (select(sock + 1, NULL, &wfds, NULL, &tv))
switch (select(sock + 1, NULL, &wfds, NULL, timeval))
{
case 0:
return SOCK_TIMEOUT;
return SOCK_TIMEOUT;
default:
/* on windows getsockopt.val is defined as char* */
if (getsockopt(sock, SOL_SOCKET, SO_ERROR, (void*) &val, &size) < 0)
val = SOCK_ERROR;
/* on windows getsockopt.val is defined as char* */
if (getsockopt(sock, SOL_SOCKET, SO_ERROR, (void*) &val, &size) == 0)
{
if (val == 0)
return 1;
}
case -1:
return val;
if (sock_recoverable (sock_error()))
return 0;
return SOCK_ERROR;
}
}
@ -508,31 +546,37 @@ sock_t sock_connect_wto(const char *hostname, const int port, const int timeout)
ai = head;
while (ai)
{
if ((sock = socket (ai->ai_family, ai->ai_socktype, ai->ai_protocol)) > -1)
if ((sock = socket (ai->ai_family, ai->ai_socktype, ai->ai_protocol)) >= 0)
{
if (timeout)
{
sock_set_blocking (sock, SOCK_NONBLOCK);
if (connect (sock, ai->ai_addr, ai->ai_addrlen) < 0)
if (connect (sock, ai->ai_addr, ai->ai_addrlen) == 0)
break;
/* loop as the connect maybe async */
while (sock != SOCK_ERROR)
{
if (sock_recoverable (sock_error()))
{
if (sock_connected (sock, timeout) > 0)
{
sock_set_blocking(sock, SOCK_BLOCK);
if (timeout) /* really wants to reset to what it was before */
sock_set_blocking(sock, SOCK_BLOCK);
break;
}
continue;
}
sock_close (sock);
sock = SOCK_ERROR;
}
else
{
if (connect (sock, ai->ai_addr, ai->ai_addrlen) == 0)
break;
}
sock_close (sock);
if (sock != SOCK_ERROR)
break;
}
sock = SOCK_ERROR;
ai = ai->ai_next;
}
if (head) freeaddrinfo (head);
if (head)
freeaddrinfo (head);
return sock;
}