Ignore UDP sending errors as it is not necessary to know about

Signed-off-by: Sergey Matveev <stargrave@stargrave.org>

diff --git a/src/govpn/handshake.go b/src/govpn/handshake.go
index 73cb4e2d35f39c3256e81d278328d30e38ff6c3b..a0bd79bd8820238dc64a8d6a8efbce63b7921ee2 100644 (file)
--- a/src/govpn/handshake.go
+++ b/src/govpn/handshake.go
@@ -164,9 +164,7 @@ func HandshakeStart(conf *PeerConf, conn *net.UDPConn, addr *net.UDPAddr) *Hands
        salsa20.XORKeyStream(enc, dhPubRepr[:], state.rNonce[:], state.dsaPubH)
        data := append(state.rNonce[:], enc...)
        data = append(data, idTag(state.Conf.Id, state.rNonce[:])...)
-       if _, err := conn.WriteTo(data, addr); err != nil {
-               panic(err)
-       }
+       conn.WriteToUDP(data, addr)
        return state
 }
 
@@ -214,10 +212,7 @@ func (h *Handshake) Server(conn *net.UDPConn, data []byte) *Peer {
                salsa20.XORKeyStream(encRs, append(h.rServer[:], h.sServer[:]...), h.rNonce[:], h.key)
 
                // Send that to client
-               if _, err := conn.WriteTo(
-                       append(encPub, append(encRs, idTag(h.Conf.Id, encPub)...)...), h.addr); err != nil {
-                       panic(err)
-               }
+               conn.WriteToUDP(append(encPub, append(encRs, idTag(h.Conf.Id, encPub)...)...), h.addr)
                h.LastPing = time.Now()
        } else
        // ENC(K, R+1, RS + RC + SC + Sign(DSAPriv, K)) + IDtag
@@ -244,9 +239,7 @@ func (h *Handshake) Server(conn *net.UDPConn, data []byte) *Peer {
                // Send final answer to client
                enc := make([]byte, RSize)
                salsa20.XORKeyStream(enc, dec[RSize:RSize+RSize], h.rNonceNext(2), h.key)
-               if _, err := conn.WriteTo(append(enc, idTag(h.Conf.Id, enc)...), h.addr); err != nil {
-                       panic(err)
-               }
+               conn.WriteToUDP(append(enc, idTag(h.Conf.Id, enc)...), h.addr)
 
                // Switch peer
                peer := newPeer(
@@ -310,9 +303,7 @@ func (h *Handshake) Client(conn *net.UDPConn, data []byte) *Peer {
                                        append(h.sClient[:], sign[:]...)...)...), h.rNonceNext(1), h.key)
 
                // Send that to server
-               if _, err := conn.WriteTo(append(enc, idTag(h.Conf.Id, enc)...), h.addr); err != nil {
-                       panic(err)
-               }
+               conn.WriteToUDP(append(enc, idTag(h.Conf.Id, enc)...), h.addr)
                h.LastPing = time.Now()
        case 16: // ENC(K, R+2, RC) + IDtag
                if h.key == nil {