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/* Copyright 2000-2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr_private.h"
#if BEOS_BONE /* BONE uses the unix code - woohoo */
#include "../unix/sendrecv.c"
#else
#include "apr_arch_networkio.h"
#include "apr_time.h"
static apr_status_t wait_for_io_or_timeout(apr_socket_t *sock, int for_read)
{
struct timeval tv, *tvptr;
fd_set fdset;
int srv;
do {
FD_ZERO(&fdset);
FD_SET(sock->socketdes, &fdset);
if (sock->timeout < 0) {
tvptr = NULL;
}
else {
tv.tv_sec = sock->timeout / APR_USEC_PER_SEC;
tv.tv_usec = sock->timeout % APR_USEC_PER_SEC;
tvptr = &tv;
}
srv = select(sock->socketdes + 1,
for_read ? &fdset : NULL,
for_read ? NULL : &fdset,
NULL,
tvptr);
/* TODO - timeout should be smaller on repeats of this loop */
} while (srv == -1 && errno == EINTR);
if (srv == 0) {
return APR_TIMEUP;
}
else if (srv < 0) {
return errno;
}
return APR_SUCCESS;
}
#define SEND_WAIT APR_USEC_PER_SEC / 10
APR_DECLARE(apr_status_t) apr_socket_send(apr_socket_t *sock, const char *buf,
apr_size_t *len)
{
apr_ssize_t rv;
do {
rv = send(sock->socketdes, buf, (*len), 0);
} while (rv == -1 && errno == EINTR);
if (rv == -1 && errno == EWOULDBLOCK && sock->timeout > 0) {
apr_int32_t snooze_val = SEND_WAIT;
apr_int32_t zzz = 0;
do {
rv = send(sock->socketdes, buf, (*len), 0);
if (rv == -1 && errno == EWOULDBLOCK){
apr_sleep (snooze_val);
zzz += snooze_val;
snooze_val += SEND_WAIT;
/* have we passed our timeout value */
if (zzz > (sock->timeout * APR_USEC_PER_SEC))
break;
}
} while (rv == -1 && (errno == EINTR || errno == EWOULDBLOCK));
}
if (rv == -1) {
*len = 0;
return errno;
}
(*len) = rv;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_socket_recv(apr_socket_t *sock, char *buf,
apr_size_t *len)
{
apr_ssize_t rv;
do {
rv = recv(sock->socketdes, buf, (*len), 0);
} while (rv == -1 && errno == EINTR);
if (rv == -1 && errno == EWOULDBLOCK && sock->timeout > 0) {
apr_status_t arv = wait_for_io_or_timeout(sock, 1);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
}
else {
do {
rv = recv(sock->socketdes, buf, (*len), 0);
} while (rv == -1 && errno == EINTR);
}
}
if (rv == -1) {
(*len) = 0;
return errno;
}
(*len) = rv;
if (rv == 0)
return APR_EOF;
return APR_SUCCESS;
}
/* BeOS doesn't have writev for sockets so we use the following instead...
*/
APR_DECLARE(apr_status_t) apr_socket_sendv(apr_socket_t * sock,
const struct iovec *vec,
apr_int32_t nvec, apr_size_t *len)
{
*len = vec[0].iov_len;
return apr_socket_send(sock, vec[0].iov_base, len);
}
APR_DECLARE(apr_status_t) apr_socket_sendto(apr_socket_t *sock,
apr_sockaddr_t *where,
apr_int32_t flags, const char *buf,
apr_size_t *len)
{
apr_ssize_t rv;
do {
rv = sendto(sock->socketdes, buf, (*len), flags,
(const struct sockaddr*)&where->sa,
where->salen);
} while (rv == -1 && errno == EINTR);
if (rv == -1 && (errno == EAGAIN || errno == EWOULDBLOCK)
&& sock->timeout != 0) {
apr_status_t arv = wait_for_io_or_timeout(sock, 0);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
} else {
do {
rv = sendto(sock->socketdes, buf, (*len), flags,
(const struct sockaddr*)&where->sa,
where->salen);
} while (rv == -1 && errno == EINTR);
}
}
if (rv == -1) {
*len = 0;
return errno;
}
*len = rv;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_socket_recvfrom(apr_sockaddr_t *from,
apr_socket_t *sock,
apr_int32_t flags, char *buf,
apr_size_t *len)
{
apr_ssize_t rv;
if (from == NULL){
return APR_ENOMEM;
/* Not sure if this is correct. Maybe we should just allocate
the memory??
*/
}
do {
rv = recvfrom(sock->socketdes, buf, (*len), flags,
(struct sockaddr*)&from->sa, &from->salen);
} while (rv == -1 && errno == EINTR);
if (rv == -1 && (errno == EAGAIN || errno == EWOULDBLOCK) &&
sock->timeout != 0) {
apr_status_t arv = wait_for_io_or_timeout(sock, 1);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
} else {
do {
rv = recvfrom(sock->socketdes, buf, (*len), flags,
(struct sockaddr*)&from->sa, &from->salen);
} while (rv == -1 && errno == EINTR);
}
}
if (rv == -1) {
(*len) = 0;
return errno;
}
(*len) = rv;
if (rv == 0)
return APR_EOF;
return APR_SUCCESS;
}
#endif /* ! BEOS_BONE */
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