1 /* Simple binding of nanopb streams to TCP sockets.
2 */
3
4 #include <sys/socket.h>
5 #include <sys/types.h>
6 #include <pb_encode.h>
7 #include <pb_decode.h>
8
9 #include "common.h"
10
write_callback(pb_ostream_t * stream,const uint8_t * buf,size_t count)11 static bool write_callback(pb_ostream_t *stream, const uint8_t *buf, size_t count)
12 {
13 int fd = (intptr_t)stream->state;
14 return send(fd, buf, count, 0) == count;
15 }
16
read_callback(pb_istream_t * stream,uint8_t * buf,size_t count)17 static bool read_callback(pb_istream_t *stream, uint8_t *buf, size_t count)
18 {
19 int fd = (intptr_t)stream->state;
20 int result;
21
22 result = recv(fd, buf, count, MSG_WAITALL);
23
24 if (result == 0)
25 stream->bytes_left = 0; /* EOF */
26
27 return result == count;
28 }
29
pb_ostream_from_socket(int fd)30 pb_ostream_t pb_ostream_from_socket(int fd)
31 {
32 pb_ostream_t stream = {&write_callback, (void*)(intptr_t)fd, SIZE_MAX, 0};
33 return stream;
34 }
35
pb_istream_from_socket(int fd)36 pb_istream_t pb_istream_from_socket(int fd)
37 {
38 pb_istream_t stream = {&read_callback, (void*)(intptr_t)fd, SIZE_MAX};
39 return stream;
40 }
41