Check return code for write when sending messages to server.

This not only avoids a warning, but prevents us from moving forward,
when we should report an error, when write fails.

diff --git a/rnetclient.c b/rnetclient.c
index d264c72..04869fd 100644 (file)
--- a/rnetclient.c
+++ b/rnetclient.c
@@ -161,8 +161,12 @@ static int handshake(int c)
        char buffer[16];
        int r;
        buffer[0] = 1;
-       write(c, buffer, 1);
-       write(c, "00000000000000", 14);
+       r = write(c, buffer, 1);
+       if (r < 1)
+               return -1;
+       r = write(c, "00000000000000", 14);
+       if (r < 14)
+               return -1;
        r = read(c, buffer, 1);
        if (r != 1 && buffer[0] != 'E')
                return -1;