Create helpers to send and receive messages.

Needs to do some input and error checking and maybe add some timeouts.

diff --git a/rnetclient.c b/rnetclient.c
index 741b840..a2aaf10 100644 (file)
--- a/rnetclient.c
+++ b/rnetclient.c
@@ -174,13 +174,44 @@ static void usage(void)
        exit(1);
 }
 
+static int rnet_send(gnutls_session_t session, char *buffer, size_t len)
+{
+       char *out;
+       size_t olen;
+       deflateRecord(buffer, len, &out, &olen);
+       gnutls_record_send(session, out, olen);
+       free(out);
+       return 0;
+}
+
+static int rnet_recv(gnutls_session_t session, struct rnet_message **message)
+{
+       char *out;
+       size_t olen;
+       int r;
+       char *buffer;
+       size_t len;
+       rnet_message_expand(message, 6);
+       buffer = (*message)->buffer;
+       r = gnutls_record_recv(session, buffer, 6);
+       len = (buffer[1] << 8 | buffer[2]);
+       rnet_message_expand(message, len);
+       buffer = (*message)->buffer + 6;
+       r = gnutls_record_recv(session, buffer, len);
+       inflateRecord(buffer - 6, len + 6, &out, &olen);
+       rnet_message_del(*message);
+       *message = NULL;
+       rnet_message_expand(message, olen);
+       memcpy((*message)->buffer, out, olen);
+       (*message)->len = olen;
+       free(out);
+       return 0;
+}
+
 int main(int argc, char **argv)
 {
        int c;
        int r;
-       char buffer[2048];
-       char *out;
-       size_t olen;
        struct rnet_decfile *decfile;
        struct rnet_message *message = NULL;
        gnutls_session_t session;
@@ -214,16 +245,17 @@ int main(int argc, char **argv)
                                gnutls_strerror(r));
 
        rnet_encode(decfile, &message);
-       deflateRecord(message->buffer, message->len, &out, &olen);
-       gnutls_record_send(session, out, olen);
-       free(out);
+       rnet_send(session, message->buffer, message->len);
+       rnet_message_del(message);
 
-       while ((r = gnutls_record_recv(session, buffer, sizeof(buffer))) > 0)
-               write(1, buffer, r);
-       close(c);
+       message = NULL;
+       rnet_recv(session, &message);
+       write(1, message->buffer, message->len);
+       rnet_message_del(message);
 
+       gnutls_bye(session, GNUTLS_SHUT_RDWR);
+       close(c);
        rnet_decfile_close(decfile);
-
        gnutls_global_deinit();
 
        return 0;