Propagate the discovered PMTU between nodes to UTCP.

[meshlink] / src / net_packet.c

diff --git a/src/net_packet.c b/src/net_packet.c
index 7dae0fe0a558c3ac5eed8920de4f00ef290e2f14..8aca6aa59adda1ef8f78d9eecec914625a9a367a 100644 (file)
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -370,7 +370,7 @@ bool send_sptps_data(void *handle, uint8_t type, const void *data, size_t len) {
 
        /* Send it via TCP if it is a handshake packet, TCPOnly is in use, or this packet is larger than the MTU. */
 
-       if(type >= SPTPS_HANDSHAKE || (type != PKT_PROBE && len > to->minmtu)) {
+       if(type >= SPTPS_HANDSHAKE || (type != PKT_PROBE && (len - 21) > to->minmtu)) {
                char buf[len * 4 / 3 + 5];
                b64encode(data, buf, len);
 
@@ -433,8 +433,8 @@ bool receive_sptps_record(void *handle, uint8_t type, const void *data, uint16_t
                return true;
        }
 
-       if(len > MTU) {
-               logger(mesh, MESHLINK_ERROR, "Packet from %s larger than maximum supported size (%d > %d)", from->name, len, MTU);
+       if(len > MAXSIZE) {
+               logger(mesh, MESHLINK_ERROR, "Packet from %s larger than maximum supported size (%d > %d)", from->name, len, MAXSIZE);
                return false;
        }