1EACCES = 13 2EADDRINUSE = 98 3EAGAIN = 11 4EALREADY = 114 5EBADF = 9 6ECONNABORTED = 103 7ECONNREFUSED = 111 8ECONNRESET = 104 9EEXIST = 17 10EHOSTUNREACH = 113 11EINPROGRESS = 115 12EINVAL = 22 13EIO = 5 14EISDIR = 21 15ENOBUFS = 105 16ENODEV = 19 17ENOENT = 2 18ENOMEM = 12 19ENOTCONN = 107 20EOPNOTSUPP = 95 21EPERM = 1 22ETIMEDOUT = 110 23errorcode = None 24