No buffer space available ERROR

[Neboer]

When sending files, I receive this:

Traceback (most recent call last):
  File "./icmp.py", line 44, in <module>
    sender.send(dst_addr)
  File "/home/neboer/Download/Icmp-File-Transfer/ICMP/IcmpApp.py", line 50, in send
    self.socket.sendto(packet, dst_addr)
  File "/home/neboer/Download/Icmp-File-Transfer/ICMP/IcmpSocket.py", line 29, in sendto
    self.socket.sendto(packet.packet, (dst_addr,1))
socket.error: [Errno 105] No buffer space available