static apr_status_t sendfile_nonblocking(apr_socket_t *s,
apr_bucket *bucket,
apr_size_t *cumulative_bytes_written,
conn_rec *c)
{
apr_status_t rv = APR_SUCCESS;
apr_bucket_file *file_bucket;
apr_file_t *fd;
apr_size_t file_length;
apr_off_t file_offset;
apr_size_t bytes_written = 0;
if (!APR_BUCKET_IS_FILE(bucket)) {
ap_log_error(APLOG_MARK, APLOG_ERR, rv, c->base_server, APLOGNO(00006)
"core_filter: sendfile_nonblocking: "
"this should never happen");
return APR_EGENERAL;
}
file_bucket = (apr_bucket_file *)(bucket->data);
fd = file_bucket->fd;
file_length = bucket->length;
file_offset = bucket->start;
if (bytes_written < file_length) {
apr_size_t n = file_length - bytes_written;
apr_status_t arv;
apr_interval_time_t old_timeout;
arv = apr_socket_timeout_get(s, &old_timeout);
if (arv != APR_SUCCESS) {
return arv;
}
arv = apr_socket_timeout_set(s, 0);
if (arv != APR_SUCCESS) {
return arv;
}
rv = apr_socket_sendfile(s, fd, NULL, &file_offset, &n, 0);
if (rv == APR_SUCCESS) {
bytes_written += n;
file_offset += n;
}
arv = apr_socket_timeout_set(s, old_timeout);
if ((arv != APR_SUCCESS) && (rv == APR_SUCCESS)) {
rv = arv;
}
}
if ((ap__logio_add_bytes_out != NULL) && (bytes_written > 0)) {
ap__logio_add_bytes_out(c, bytes_written);
}
*cumulative_bytes_written += bytes_written;
if ((bytes_written < file_length) && (bytes_written > 0)) {
apr_bucket_split(bucket, bytes_written);
apr_bucket_delete(bucket);
}
else if (bytes_written == file_length) {
apr_bucket_delete(bucket);
}
return rv;
}
lt_http_status_t lt_http_server_run( lt_http_server_t * server )
{
apr_pool_t * pool = NULL;
apr_socket_t * client = NULL;
char error[1025];
memset( error, 0, 1025 );
if( server == NULL ) return LT_HTTP_INVALID_ARG;
/* prepare connection pool */
apr_pool_create( &pool, server->pool );
/* make the socket non-blocking */
if( APR_SUCCESS != apr_socket_opt_set( server->socket,
APR_SO_NONBLOCK, 1 ) ) {
my_perror( "ERROR: apr_socket_opt_set failed with: " );
return LT_HTTP_INVALID_ARG;
}
while( 1 ) {
apr_status_t rv;
/* bool reading should be atomic operation so no locking is needed */
if( server->stoprequested ) {
break;
}
/* clear pool memory */
apr_pool_clear( pool );
/* accept new connection */
rv = apr_socket_accept( &client, server->socket, pool );
if( APR_STATUS_IS_EAGAIN( rv ) || APR_STATUS_IS_EINTR( rv ) ) {
/* sleep for 100ms before accepting new client */
apr_sleep( 100 * 1000 );
continue;
}
if( APR_SUCCESS != rv ) {
my_perror( "ERROR: apr_socket_accept failed with: " );
continue;
}
/* determine client address */
{
apr_sockaddr_t * sa = NULL;
char * ip = NULL;
if( APR_SUCCESS != apr_socket_addr_get( &sa,
APR_REMOTE, client ) ) {
my_perror( "ERROR: apr_socket_addr_get failed with: " );
apr_socket_close( client );
continue;
}
if( APR_SUCCESS != apr_sockaddr_ip_get( &ip, sa ) ) {
my_perror( "ERROR: apr_sockaddr_ip_get failed with: " );
apr_socket_close( client );
continue;
}
}
/* immediatelly start sending HTTP response headers */
{
char * headers = apr_pstrcat( pool,
"HTTP/1.0 200 OK\r\n"
"Content-Length: ",
apr_ltoa( pool, server->finfo.size ),
"\r\n",
"Content-Type: application/octet-stream;"
" charset=utf-8\r\n",
"Connection: Close\r\n",
"\r\n",
NULL );
apr_size_t headers_size = strlen( headers );
if( APR_SUCCESS != apr_socket_send(
client, headers, &headers_size ) ) {
my_perror( "ERROR: apr_socket_send failed with: " );
apr_socket_close( client );
continue;
}
}
/* send file contents */
{
apr_off_t offset = 0;
apr_size_t len = server->finfo.size;
if( APR_SUCCESS != apr_socket_sendfile(
client, server->file, NULL,
&offset, &len, 0 ) ) {
my_perror( "ERROR: apr_socket_sendfile failed with: " );
apr_socket_close( client );
continue;
}
}
/* read and discard all headers */
{
apr_status_t rv;
/* set non-block option on client socket */
if( APR_SUCCESS != apr_socket_timeout_set( client,
2 * 1000 * 1000 ) ) {
my_perror( "ERROR: apr_socket_timeout_set failed with: " );
apr_socket_close( client );
continue;
}
/* read all data until 2 sec timeout or eof, then proceed to */
/* close */
do {
char buffer[1024];
apr_size_t len = 1024;
rv = apr_socket_recv( client, buffer, &len );
if( APR_STATUS_IS_TIMEUP( rv ) || APR_STATUS_IS_EOF( rv ) ) {
break;
}
} while( 1 );
}
/* close our side of connection */
if( APR_SUCCESS !=
apr_socket_shutdown( client, APR_SHUTDOWN_WRITE ) ) {
/* we actually don't care about errors arriving during shutdown
* phase
* my_perror( "ERROR: apr_socket_shutdown(WRITE) failed with: " );
*/
apr_socket_close( client );
continue;
}
/* close other side of connection */
if( APR_SUCCESS !=
apr_socket_shutdown( client, APR_SHUTDOWN_READ ) ) {
/* we actually don't care about errors arriving during shutdown
* phase
* my_perror( "ERROR: apr_socket_shutdown(READ) failed with: " );
*/
apr_socket_close( client );
continue;
}
/* close socket */
if( APR_SUCCESS != apr_socket_close( client ) ) {
/* we actually don't care about errors arriving during shutdown
* phase
* my_perror( "ERROR: apr_socket_close failed with: " );
*/
continue;
}
}
return LT_HTTP_SUCCESS;
}
/* deprecated */
apr_status_t apr_sendfile(apr_socket_t *sock, apr_file_t *file,
apr_hdtr_t *hdtr, apr_off_t *offset, apr_size_t *len,
apr_int32_t flags)
{
return apr_socket_sendfile(sock, file, hdtr, offset, len, flags);
}
static apr_status_t sendfile_it_all(core_net_rec *c,
apr_file_t *fd,
apr_hdtr_t *hdtr,
apr_off_t file_offset,
apr_size_t file_bytes_left,
apr_size_t total_bytes_left,
apr_size_t *bytes_sent,
apr_int32_t flags)
{
apr_status_t rv;
#ifdef AP_DEBUG
apr_interval_time_t timeout = 0;
#endif
AP_DEBUG_ASSERT((apr_socket_timeout_get(c->client_socket, &timeout)
== APR_SUCCESS)
&& timeout > 0); /* socket must be in timeout mode */
/* Reset the bytes_sent field */
*bytes_sent = 0;
do {
apr_size_t tmplen = file_bytes_left;
rv = apr_socket_sendfile(c->client_socket, fd, hdtr, &file_offset, &tmplen,
flags);
*bytes_sent += tmplen;
total_bytes_left -= tmplen;
if (!total_bytes_left || rv != APR_SUCCESS) {
return rv; /* normal case & error exit */
}
AP_DEBUG_ASSERT(total_bytes_left > 0 && tmplen > 0);
/* partial write, oooh noooo...
* Skip over any header data which was written
*/
while (tmplen && hdtr->numheaders) {
if (tmplen >= hdtr->headers[0].iov_len) {
tmplen -= hdtr->headers[0].iov_len;
--hdtr->numheaders;
++hdtr->headers;
}
else {
char *iov_base = (char *)hdtr->headers[0].iov_base;
hdtr->headers[0].iov_len -= tmplen;
iov_base += tmplen;
hdtr->headers[0].iov_base = iov_base;
tmplen = 0;
}
}
/* Skip over any file data which was written */
if (tmplen <= file_bytes_left) {
file_offset += tmplen;
file_bytes_left -= tmplen;
continue;
}
tmplen -= file_bytes_left;
file_bytes_left = 0;
file_offset = 0;
/* Skip over any trailer data which was written */
while (tmplen && hdtr->numtrailers) {
if (tmplen >= hdtr->trailers[0].iov_len) {
tmplen -= hdtr->trailers[0].iov_len;
--hdtr->numtrailers;
++hdtr->trailers;
}
else {
char *iov_base = (char *)hdtr->trailers[0].iov_base;
hdtr->trailers[0].iov_len -= tmplen;
iov_base += tmplen;
hdtr->trailers[0].iov_base = iov_base;
tmplen = 0;
}
}
} while (1);
}
static int client(apr_pool_t *p, client_socket_mode_t socket_mode,
const char *host, int start_server)
{
apr_status_t rv, tmprv;
apr_socket_t *sock;
char buf[120];
apr_file_t *f = NULL;
apr_size_t len;
apr_size_t expected_len;
apr_off_t current_file_offset;
apr_hdtr_t hdtr;
struct iovec headers[3];
struct iovec trailers[3];
apr_size_t bytes_read;
apr_pollset_t *pset;
apr_int32_t nsocks;
int connect_tries = 1;
int i;
int family;
apr_sockaddr_t *destsa;
apr_proc_t server;
apr_interval_time_t connect_retry_interval = apr_time_from_msec(50);
if (start_server) {
spawn_server(p, &server);
connect_tries = 5; /* give it a chance to start up */
}
create_testfile(p, TESTFILE);
rv = apr_file_open(&f, TESTFILE, APR_FOPEN_READ, 0, p);
if (rv != APR_SUCCESS) {
aprerr("apr_file_open()", rv);
}
if (!host) {
host = "127.0.0.1";
}
family = APR_INET;
rv = apr_sockaddr_info_get(&destsa, host, family, TESTSF_PORT, 0, p);
if (rv != APR_SUCCESS) {
aprerr("apr_sockaddr_info_get()", rv);
}
while (connect_tries--) {
apr_setup(p, &sock, &family);
rv = apr_socket_connect(sock, destsa);
if (connect_tries && APR_STATUS_IS_ECONNREFUSED(rv)) {
apr_status_t tmprv = apr_socket_close(sock);
if (tmprv != APR_SUCCESS) {
aprerr("apr_socket_close()", tmprv);
}
apr_sleep(connect_retry_interval);
connect_retry_interval *= 2;
}
else {
break;
}
}
if (rv != APR_SUCCESS) {
aprerr("apr_socket_connect()", rv);
}
switch(socket_mode) {
case BLK:
/* leave it blocking */
break;
case NONBLK:
/* set it non-blocking */
rv = apr_socket_opt_set(sock, APR_SO_NONBLOCK, 1);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_opt_set(APR_SO_NONBLOCK)", rv);
}
break;
case TIMEOUT:
/* set a timeout */
rv = apr_socket_timeout_set(sock, 100 * APR_USEC_PER_SEC);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_opt_set(APR_SO_NONBLOCK)", rv);
exit(1);
}
break;
default:
assert(1 != 1);
}
printf("Sending the file...\n");
hdtr.headers = headers;
hdtr.numheaders = 3;
hdtr.headers[0].iov_base = HDR1;
hdtr.headers[0].iov_len = strlen(hdtr.headers[0].iov_base);
hdtr.headers[1].iov_base = HDR2;
hdtr.headers[1].iov_len = strlen(hdtr.headers[1].iov_base);
hdtr.headers[2].iov_base = malloc(HDR3_LEN);
assert(hdtr.headers[2].iov_base);
memset(hdtr.headers[2].iov_base, HDR3_CHAR, HDR3_LEN);
hdtr.headers[2].iov_len = HDR3_LEN;
hdtr.trailers = trailers;
hdtr.numtrailers = 3;
hdtr.trailers[0].iov_base = TRL1;
hdtr.trailers[0].iov_len = strlen(hdtr.trailers[0].iov_base);
hdtr.trailers[1].iov_base = TRL2;
hdtr.trailers[1].iov_len = strlen(hdtr.trailers[1].iov_base);
hdtr.trailers[2].iov_base = malloc(TRL3_LEN);
memset(hdtr.trailers[2].iov_base, TRL3_CHAR, TRL3_LEN);
assert(hdtr.trailers[2].iov_base);
hdtr.trailers[2].iov_len = TRL3_LEN;
expected_len =
strlen(HDR1) + strlen(HDR2) + HDR3_LEN +
strlen(TRL1) + strlen(TRL2) + TRL3_LEN +
FILE_LENGTH;
if (socket_mode == BLK) {
current_file_offset = 0;
len = FILE_LENGTH;
rv = apr_socket_sendfile(sock, f, &hdtr, ¤t_file_offset, &len, 0);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_sendfile()", rv);
}
printf("apr_socket_sendfile() updated offset with %ld\n",
(long int)current_file_offset);
printf("apr_socket_sendfile() updated len with %ld\n",
(long int)len);
printf("bytes really sent: %" APR_SIZE_T_FMT "\n",
expected_len);
if (len != expected_len) {
fprintf(stderr, "apr_socket_sendfile() didn't report the correct "
"number of bytes sent!\n");
exit(1);
}
}
else {
/* non-blocking... wooooooo */
apr_size_t total_bytes_sent;
apr_pollfd_t pfd;
pset = NULL;
rv = apr_pollset_create(&pset, 1, p, 0);
assert(!rv);
pfd.p = p;
pfd.desc_type = APR_POLL_SOCKET;
pfd.reqevents = APR_POLLOUT;
pfd.rtnevents = 0;
pfd.desc.s = sock;
pfd.client_data = NULL;
rv = apr_pollset_add(pset, &pfd);
assert(!rv);
total_bytes_sent = 0;
current_file_offset = 0;
len = FILE_LENGTH;
do {
apr_size_t tmplen;
tmplen = len; /* bytes remaining to send from the file */
printf("Calling apr_socket_sendfile()...\n");
printf("Headers (%d):\n", hdtr.numheaders);
for (i = 0; i < hdtr.numheaders; i++) {
printf("\t%ld bytes (%c)\n",
(long)hdtr.headers[i].iov_len,
*(char *)hdtr.headers[i].iov_base);
}
printf("File: %ld bytes from offset %ld\n",
(long)tmplen, (long)current_file_offset);
printf("Trailers (%d):\n", hdtr.numtrailers);
for (i = 0; i < hdtr.numtrailers; i++) {
printf("\t%ld bytes\n",
(long)hdtr.trailers[i].iov_len);
}
rv = apr_socket_sendfile(sock, f, &hdtr, ¤t_file_offset, &tmplen, 0);
printf("apr_socket_sendfile()->%d, sent %ld bytes\n", rv, (long)tmplen);
if (rv) {
if (APR_STATUS_IS_EAGAIN(rv)) {
assert(tmplen == 0);
nsocks = 1;
tmprv = apr_pollset_poll(pset, -1, &nsocks, NULL);
assert(!tmprv);
assert(nsocks == 1);
/* continue; */
}
}
total_bytes_sent += tmplen;
/* Adjust hdtr to compensate for partially-written
* data.
*/
/* First, skip over any header data which might have
* been written.
*/
while (tmplen && hdtr.numheaders) {
if (tmplen >= hdtr.headers[0].iov_len) {
tmplen -= hdtr.headers[0].iov_len;
--hdtr.numheaders;
++hdtr.headers;
}
else {
hdtr.headers[0].iov_len -= tmplen;
hdtr.headers[0].iov_base =
(char*) hdtr.headers[0].iov_base + tmplen;
tmplen = 0;
}
}
/* Now, skip over any file data which might have been
* written.
*/
if (tmplen <= len) {
current_file_offset += tmplen;
len -= tmplen;
tmplen = 0;
}
else {
tmplen -= len;
len = 0;
current_file_offset = 0;
}
/* Last, skip over any trailer data which might have
* been written.
*/
while (tmplen && hdtr.numtrailers) {
if (tmplen >= hdtr.trailers[0].iov_len) {
tmplen -= hdtr.trailers[0].iov_len;
--hdtr.numtrailers;
++hdtr.trailers;
}
else {
hdtr.trailers[0].iov_len -= tmplen;
hdtr.trailers[0].iov_base =
(char *)hdtr.trailers[0].iov_base + tmplen;
tmplen = 0;
}
}
} while (total_bytes_sent < expected_len &&
(rv == APR_SUCCESS ||
(APR_STATUS_IS_EAGAIN(rv) && socket_mode != TIMEOUT)));
if (total_bytes_sent != expected_len) {
fprintf(stderr,
"client problem: sent %ld of %ld bytes\n",
(long)total_bytes_sent, (long)expected_len);
exit(1);
}
if (rv) {
fprintf(stderr,
"client problem: rv %d\n",
rv);
exit(1);
}
}
current_file_offset = 0;
rv = apr_file_seek(f, APR_CUR, ¤t_file_offset);
if (rv != APR_SUCCESS) {
aprerr("apr_file_seek()", rv);
}
printf("After apr_socket_sendfile(), the kernel file pointer is "
"at offset %ld.\n",
(long int)current_file_offset);
rv = apr_socket_shutdown(sock, APR_SHUTDOWN_WRITE);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_shutdown()", rv);
}
/* in case this is the non-blocking test, set socket timeout;
* we're just waiting for EOF */
rv = apr_socket_timeout_set(sock, apr_time_from_sec(3));
if (rv != APR_SUCCESS) {
aprerr("apr_socket_timeout_set()", rv);
}
bytes_read = 1;
rv = apr_socket_recv(sock, buf, &bytes_read);
if (rv != APR_EOF) {
aprerr("apr_socket_recv() (expected APR_EOF)", rv);
}
if (bytes_read != 0) {
fprintf(stderr, "We expected to get 0 bytes read with APR_EOF\n"
"but instead we read %ld bytes.\n",
(long int)bytes_read);
exit(1);
}
printf("client: apr_socket_sendfile() worked as expected!\n");
rv = apr_file_remove(TESTFILE, p);
if (rv != APR_SUCCESS) {
aprerr("apr_file_remove()", rv);
}
if (start_server) {
apr_exit_why_e exitwhy;
apr_size_t nbytes;
char responsebuf[1024];
int exitcode;
rv = apr_file_pipe_timeout_set(server.out, apr_time_from_sec(2));
if (rv != APR_SUCCESS) {
aprerr("apr_file_pipe_timeout_set()", rv);
}
nbytes = sizeof(responsebuf);
rv = apr_file_read(server.out, responsebuf, &nbytes);
if (rv != APR_SUCCESS) {
aprerr("apr_file_read() messages from server", rv);
}
printf("%.*s", (int)nbytes, responsebuf);
rv = apr_proc_wait(&server, &exitcode, &exitwhy, APR_WAIT);
if (rv != APR_CHILD_DONE) {
aprerr("apr_proc_wait() (expected APR_CHILD_DONE)", rv);
}
if (exitcode != 0) {
fprintf(stderr, "sendfile server returned %d\n", exitcode);
exit(1);
}
}
return 0;
}