gday_server 0.5.1

Server that lets 2 peers exchange their socket addresses.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242

#![forbid(unsafe_code)]
#![warn(clippy::all)]

use std::io::Read;

use gday_contact_exchange_protocol::{ClientMsg, Contact, ServerMsg, read_from, write_to};

#[tokio::test]
async fn test_integration() {
    // start the server in the background
    let args = gday_server::Args {
        key: None,
        certificate: None,
        unencrypted: true,
        addresses: vec!["127.0.0.1:0".parse().unwrap(), "[::1]:0".parse().unwrap()],
        timeout: 3600,
        request_limit: 10,
        verbosity: log::LevelFilter::Off,
    };
    let (server_addrs, _handle) = gday_server::start_server(args).unwrap();
    let server_ipv4 = *server_addrs.iter().find(|a| a.is_ipv4()).unwrap();
    let server_ipv6 = *server_addrs.iter().find(|a| a.is_ipv6()).unwrap();

    tokio::task::spawn_blocking(move || {
        let local_contact_1 = Contact {
            v4: Some("1.8.3.1:2304".parse().unwrap()),
            v6: Some("[ab:41::b:43]:92".parse().unwrap()),
        };

        let local_contact_2 = Contact {
            v4: Some("3.1.4.1:7853".parse().unwrap()),
            v6: Some("[ab:41:ac::b:1]:5052".parse().unwrap()),
        };

        // connect to the server
        let mut stream_v4 = std::net::TcpStream::connect(server_ipv4).unwrap();
        let mut stream_v6 = std::net::TcpStream::connect(server_ipv6).unwrap();

        // successfully create a room
        write_to(
            ClientMsg::CreateRoom {
                room_code: "room code 1".to_string(),
            },
            &mut stream_v4,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v4).unwrap();
        assert_eq!(response, ServerMsg::RoomCreated);

        // room taken
        write_to(
            ClientMsg::CreateRoom {
                room_code: "room code 1".to_string(),
            },
            &mut stream_v4,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v4).unwrap();
        assert_eq!(response, ServerMsg::ErrorRoomTaken);

        // room doesn't exist
        write_to(
            ClientMsg::RecordPublicAddr {
                room_code: "room code 2".to_string(),
                is_creator: true,
            },
            &mut stream_v6,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v6).unwrap();
        assert_eq!(response, ServerMsg::ErrorNoSuchRoomCode);

        // record public address
        write_to(
            ClientMsg::RecordPublicAddr {
                room_code: "room code 1".to_string(),
                is_creator: true,
            },
            &mut stream_v4,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v4).unwrap();
        assert_eq!(response, ServerMsg::ReceivedAddr);

        // record public address
        write_to(
            ClientMsg::RecordPublicAddr {
                room_code: "room code 1".to_string(),
                is_creator: false,
            },
            &mut stream_v6,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v6).unwrap();
        assert_eq!(response, ServerMsg::ReceivedAddr);

        // set creator to done
        write_to(
            ClientMsg::ReadyToShare {
                local_contact: local_contact_1,
                room_code: "room code 1".to_string(),
                is_creator: true,
            },
            &mut stream_v4,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v4).unwrap();
        let ServerMsg::ClientContact(client_contact) = response else {
            panic!("Server replied with {response:?} instead of ClientContact");
        };
        assert_eq!(client_contact.local, local_contact_1);

        // can't update client once it is done
        write_to(
            ClientMsg::RecordPublicAddr {
                room_code: "room code 1".to_string(),
                is_creator: true,
            },
            &mut stream_v6,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v6).unwrap();
        assert_eq!(response, ServerMsg::ErrorUnexpectedMsg);

        // successfully create an unrelated room
        write_to(
            ClientMsg::CreateRoom {
                room_code: "room code 2".to_string(),
            },
            &mut stream_v6,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v6).unwrap();
        assert_eq!(response, ServerMsg::RoomCreated);

        // set joiner to done
        write_to(
            ClientMsg::ReadyToShare {
                local_contact: local_contact_2,
                room_code: "room code 1".to_string(),
                is_creator: false,
            },
            &mut stream_v6,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v6).unwrap();
        let ServerMsg::ClientContact(client_contact) = response else {
            panic!("Server replied with {response:?} instead of ClientContact");
        };
        assert_eq!(client_contact.local, local_contact_2);

        // ensure peer contact 1 properly exchanged
        let response: ServerMsg = read_from(&mut stream_v4).unwrap();
        let ServerMsg::PeerContact(peer_contact) = response else {
            panic!("Server replied with {response:?} instead of PeerContact");
        };
        assert_eq!(peer_contact.local, local_contact_2);

        // ensure peer contact 2 properly exchanged
        let response: ServerMsg = read_from(&mut stream_v6).unwrap();
        let ServerMsg::PeerContact(peer_contact) = response else {
            panic!("Server replied with {response:?} instead of PeerContact");
        };
        assert_eq!(peer_contact.local, local_contact_1);

        // ensure the room was closed, and can be reopened
        write_to(
            ClientMsg::CreateRoom {
                room_code: "room code 1".to_string(),
            },
            &mut stream_v4,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v4).unwrap();
        assert_eq!(response, ServerMsg::RoomCreated);
    })
    .await
    .unwrap();
}

#[tokio::test]
async fn test_request_limit() {
    // start the server in the background
    let args = gday_server::Args {
        key: None,
        certificate: None,
        unencrypted: true,
        addresses: vec!["127.0.0.1:0".parse().unwrap(), "[::1]:0".parse().unwrap()],
        timeout: 3600,
        request_limit: 10,
        verbosity: log::LevelFilter::Off,
    };
    let (server_addrs, _handle) = gday_server::start_server(args).unwrap();
    let server_ipv4 = *server_addrs.iter().find(|a| a.is_ipv4()).unwrap();
    let server_ipv6 = *server_addrs.iter().find(|a| a.is_ipv6()).unwrap();

    tokio::task::spawn_blocking(move || {
        // connect to the server
        let mut stream_v4 = std::net::TcpStream::connect(server_ipv4).unwrap();
        let mut stream_v6 = std::net::TcpStream::connect(server_ipv6).unwrap();

        for room_code in 1..=10 {
            // successfully create a room
            write_to(
                ClientMsg::CreateRoom {
                    room_code: format!("{room_code}"),
                },
                &mut stream_v4,
            )
            .unwrap();
            let response: ServerMsg = read_from(&mut stream_v4).unwrap();
            assert_eq!(response, ServerMsg::RoomCreated);
        }

        // request limit hit
        write_to(
            ClientMsg::CreateRoom {
                room_code: "11".to_string(),
            },
            &mut stream_v4,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v4).unwrap();
        assert_eq!(response, ServerMsg::ErrorTooManyRequests);

        // ensure the server closed the connection
        assert_eq!(stream_v4.read(&mut [0, 0]).unwrap(), 0);

        // ensure other connections are unaffected
        write_to(
            ClientMsg::CreateRoom {
                room_code: "other room code".to_string(),
            },
            &mut stream_v6,
        )
        .unwrap();
        let response: ServerMsg = read_from(&mut stream_v6).unwrap();
        assert_eq!(response, ServerMsg::RoomCreated);
    })
    .await
    .unwrap();
}