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* Fall back to regular read/write if sendfile fails.

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This commit is contained in:
Justin Maggard 2010-09-01 00:27:42 +00:00
parent 771d32b557
commit 6325789eda
1 changed files with 38 additions and 8 deletions
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38
upnphttp.c
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@ -45,6 +45,7 @@
#endif
//#define MAX_BUFFER_SIZE 4194304 // 4MB -- Too much?
#define MAX_BUFFER_SIZE 2147483647 // 2GB -- Too much?
#define MIN_BUFFER_SIZE 65536
#include "icons.c"
@ -1071,22 +1072,51 @@ send_file(struct upnphttp * h, int sendfd, off_t offset, off_t end_offset)
{
off_t send_size;
off_t ret;
char *buf = NULL;
int try_sendfile = 1;
while( offset < end_offset )
{
if( try_sendfile )
{
send_size = ( ((end_offset - offset) < MAX_BUFFER_SIZE) ? (end_offset - offset + 1) : MAX_BUFFER_SIZE);
ret = sendfile(h->socket, sendfd, &offset, send_size);
if( ret == -1 )
{
DPRINTF(E_DEBUG, L_HTTP, "sendfile error :: error no. %d [%s]\n", errno, strerror(errno));
/* If sendfile isn't supported on the filesystem, don't bother trying to use it again. */
if( errno == EOVERFLOW )
try_sendfile = 0;
else if( errno != EAGAIN )
break;
}
else
{
//DPRINTF(E_DEBUG, L_HTTP, "sent %lld bytes to %d. offset is now %lld.\n", ret, h->socket, offset);
continue;
}
}
/* Fall back to regular I/O */
if( !buf )
buf = malloc(MIN_BUFFER_SIZE);
send_size = ( ((end_offset - offset) < MIN_BUFFER_SIZE) ? (end_offset - offset + 1) : MIN_BUFFER_SIZE);
lseek(sendfd, offset, SEEK_SET);
ret = read(sendfd, buf, send_size);
if( ret == -1 ) {
DPRINTF(E_DEBUG, L_HTTP, "read error :: error no. %d [%s]\n", errno, strerror(errno));
if( errno != EAGAIN )
break;
}
/*else
{
DPRINTF(E_DEBUG, L_HTTP, "sent %lld bytes to %d. offset is now %lld.\n", ret, h->socket, offset);
}*/
ret = write(h->socket, buf, ret);
if( ret == -1 ) {
DPRINTF(E_DEBUG, L_HTTP, "write error :: error no. %d [%s]\n", errno, strerror(errno));
if( errno != EAGAIN )
break;
}
offset+=ret;
}
if( buf )
free(buf);
}
void