--- /dev/null
+/* Simple binding of nanopb streams to TCP sockets.
+ */
+
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <pb_encode.h>
+#include <pb_decode.h>
+
+#include "common.h"
+
+static bool write_callback(pb_ostream_t *stream, const uint8_t *buf, size_t count)
+{
+ int fd = (intptr_t)stream->state;
+ return send(fd, buf, count, 0) == count;
+}
+
+static bool read_callback(pb_istream_t *stream, uint8_t *buf, size_t count)
+{
+ int fd = (intptr_t)stream->state;
+ int result;
+
+ result = recv(fd, buf, count, MSG_WAITALL);
+
+ if (result == 0)
+ stream->bytes_left = 0; /* EOF */
+
+ return result == count;
+}
+
+pb_ostream_t pb_ostream_from_socket(int fd)
+{
+ pb_ostream_t stream = {&write_callback, (void*)(intptr_t)fd, SIZE_MAX, 0};
+ return stream;
+}
+
+pb_istream_t pb_istream_from_socket(int fd)
+{
+ pb_istream_t stream = {&read_callback, (void*)(intptr_t)fd, SIZE_MAX};
+ return stream;
+}