send fake ICE candidate

it probably doesn't have the proper format :(
0.1.12
Actually indicate end of candidates.
0.1.13
Fixed `this` references.
0.1.14
Although RFC2327 doesn't specify a format for `session id`, it is customarily a number.
0.1.15
Corrected argument handling.

Description is {type,sdp}.
0.1.16