mirror of
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake.git
synced 2025-10-14 05:11:19 -04:00
ae0643320e
Call conn.RemoteAddr() before entering the datachannelHandler goroutine. This is a workaround for the hang described at https://bugs.torproject.org/18628#comment:8
109 lines
3.1 KiB
Go
109 lines
3.1 KiB
Go
package main
|
|
|
|
import (
|
|
"net"
|
|
"strings"
|
|
"testing"
|
|
)
|
|
|
|
func TestRemoteIPFromSDP(t *testing.T) {
|
|
tests := []struct {
|
|
sdp string
|
|
expected net.IP
|
|
}{
|
|
// https://tools.ietf.org/html/rfc4566#section-5
|
|
{`v=0
|
|
o=jdoe 2890844526 2890842807 IN IP4 10.47.16.5
|
|
s=SDP Seminar
|
|
i=A Seminar on the session description protocol
|
|
u=http://www.example.com/seminars/sdp.pdf
|
|
e=j.doe@example.com (Jane Doe)
|
|
c=IN IP4 224.2.17.12/127
|
|
t=2873397496 2873404696
|
|
a=recvonly
|
|
m=audio 49170 RTP/AVP 0
|
|
m=video 51372 RTP/AVP 99
|
|
a=rtpmap:99 h263-1998/90000
|
|
`, net.ParseIP("224.2.17.12")},
|
|
// Missing c= line
|
|
{`v=0
|
|
o=jdoe 2890844526 2890842807 IN IP4 10.47.16.5
|
|
s=SDP Seminar
|
|
i=A Seminar on the session description protocol
|
|
u=http://www.example.com/seminars/sdp.pdf
|
|
e=j.doe@example.com (Jane Doe)
|
|
t=2873397496 2873404696
|
|
a=recvonly
|
|
m=audio 49170 RTP/AVP 0
|
|
m=video 51372 RTP/AVP 99
|
|
a=rtpmap:99 h263-1998/90000
|
|
`, nil},
|
|
// Single line, IP address only
|
|
{`c=IN IP4 224.2.1.1
|
|
`, net.ParseIP("224.2.1.1")},
|
|
// Same, with TTL
|
|
{`c=IN IP4 224.2.1.1/127
|
|
`, net.ParseIP("224.2.1.1")},
|
|
// Same, with TTL and multicast addresses
|
|
{`c=IN IP4 224.2.1.1/127/3
|
|
`, net.ParseIP("224.2.1.1")},
|
|
// IPv6, address only
|
|
{`c=IN IP6 FF15::101
|
|
`, net.ParseIP("ff15::101")},
|
|
// Same, with multicast addresses
|
|
{`c=IN IP6 FF15::101/3
|
|
`, net.ParseIP("ff15::101")},
|
|
// Multiple c= lines
|
|
{`c=IN IP4 1.2.3.4
|
|
c=IN IP4 5.6.7.8
|
|
`, net.ParseIP("1.2.3.4")},
|
|
// Modified from SDP sent by snowflake-client.
|
|
{`v=0
|
|
o=- 7860378660295630295 2 IN IP4 127.0.0.1
|
|
s=-
|
|
t=0 0
|
|
a=group:BUNDLE data
|
|
a=msid-semantic: WMS
|
|
m=application 54653 DTLS/SCTP 5000
|
|
c=IN IP4 1.2.3.4
|
|
a=candidate:3581707038 1 udp 2122260223 192.168.0.1 54653 typ host generation 0 network-id 1 network-cost 50
|
|
a=candidate:2617212910 1 tcp 1518280447 192.168.0.1 59673 typ host tcptype passive generation 0 network-id 1 network-cost 50
|
|
a=candidate:2082671819 1 udp 1686052607 1.2.3.4 54653 typ srflx raddr 192.168.0.1 rport 54653 generation 0 network-id 1 network-cost 50
|
|
a=ice-ufrag:IBdf
|
|
a=ice-pwd:G3lTrrC9gmhQx481AowtkhYz
|
|
a=fingerprint:sha-256 53:F8:84:D9:3C:1F:A0:44:AA:D6:3C:65:80:D3:CB:6F:23:90:17:41:06:F9:9C:10:D8:48:4A:A8:B6:FA:14:A1
|
|
a=setup:actpass
|
|
a=mid:data
|
|
a=sctpmap:5000 webrtc-datachannel 1024
|
|
`, net.ParseIP("1.2.3.4")},
|
|
// Improper character within IPv4
|
|
{`c=IN IP4 224.2z.1.1
|
|
`, nil},
|
|
// Improper character within IPv6
|
|
{`c=IN IP6 ff15:g::101
|
|
`, nil},
|
|
// Bogus "IP7" addrtype
|
|
{`c=IN IP7 1.2.3.4
|
|
`, nil},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
// https://tools.ietf.org/html/rfc4566#section-5: "The sequence
|
|
// CRLF (0x0d0a) is used to end a record, although parsers
|
|
// SHOULD be tolerant and also accept records terminated with a
|
|
// single newline character." We represent the test cases with
|
|
// LF line endings for convenience, and test them both that way
|
|
// and with CRLF line endings.
|
|
lfSDP := test.sdp
|
|
crlfSDP := strings.Replace(lfSDP, "\n", "\r\n", -1)
|
|
|
|
ip := remoteIPFromSDP(lfSDP)
|
|
if !ip.Equal(test.expected) {
|
|
t.Errorf("expected %q, got %q from %q", test.expected, ip, lfSDP)
|
|
}
|
|
ip = remoteIPFromSDP(crlfSDP)
|
|
if !ip.Equal(test.expected) {
|
|
t.Errorf("expected %q, got %q from %q", test.expected, ip, crlfSDP)
|
|
}
|
|
}
|
|
}
|