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sctp.h
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1 
19 #ifndef _JANUS_SCTP_H
20 #define _JANUS_SCTP_H
21 
22 #ifdef HAVE_SCTP
23 
24 #define INET 1
25 #define INET6 1
26 
27 /* Uncomment the line below to enable SCTP debugging to files */
28 //~ #define DEBUG_SCTP
29 
30 #include <sys/types.h>
31 #include <sys/socket.h>
32 #include <sys/select.h>
33 #include <netinet/in.h>
34 #include <arpa/inet.h>
35 #include <pthread.h>
36 #include <unistd.h>
37 #include <stdint.h>
38 #include <stdarg.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <errno.h>
43 #include <usrsctp.h>
44 #include <glib.h>
45 
46 #include "mutex.h"
47 
48 
51 int janus_sctp_init(void);
52 
54 void janus_sctp_deinit(void);
55 
56 
57 #define BUFFER_SIZE (1<<16)
58 #define NUMBER_OF_CHANNELS (100)
59 #define NUMBER_OF_STREAMS (16)
60 
61 #define DATA_CHANNEL_PPID_CONTROL 50
62 #define DATA_CHANNEL_PPID_DOMSTRING 51
63 #define DATA_CHANNEL_PPID_BINARY_PARTIAL 52
64 #define DATA_CHANNEL_PPID_BINARY 53
65 #define DATA_CHANNEL_PPID_DOMSTRING_PARTIAL 54
66 
67 #define DATA_CHANNEL_CLOSED 0
68 #define DATA_CHANNEL_CONNECTING 1
69 #define DATA_CHANNEL_OPEN 2
70 #define DATA_CHANNEL_CLOSING 3
71 
72 #define DATA_CHANNEL_FLAGS_SEND_REQ 0x00000001
73 #define DATA_CHANNEL_FLAGS_SEND_RSP 0x00000002
74 #define DATA_CHANNEL_FLAGS_SEND_ACK 0x00000004
75 
76 typedef struct janus_sctp_channel {
78  uint32_t id;
80  uint32_t pr_value;
82  uint16_t pr_policy;
84  uint16_t stream;
86  uint8_t unordered;
88  uint8_t state;
90  uint32_t flags;
91 } janus_sctp_channel;
92 
93 typedef struct janus_sctp_association {
95  void *dtls;
97  uint64_t handle_id;
99  struct janus_sctp_channel channels[NUMBER_OF_CHANNELS];
101  struct janus_sctp_channel *stream_channel[NUMBER_OF_STREAMS];
103  uint16_t stream_buffer[NUMBER_OF_STREAMS];
105  uint32_t stream_buffer_counter;
107  struct socket *sock;
109  uint16_t local_port;
111  uint16_t remote_port;
113  GAsyncQueue *messages;
115  GThread *thread;
116 #ifdef DEBUG_SCTP
117  FILE *debug_dump;
118 #endif
119 
120  janus_mutex mutex;
121 } janus_sctp_association;
122 
124 typedef struct janus_sctp_message {
126  gboolean incoming;
128  char *buffer;
130  size_t length;
131 } janus_sctp_message;
132 
133 
134 #define DATA_CHANNEL_OPEN_REQUEST 3 /* FIXME was 0, but should be 3 as per http://tools.ietf.org/html/draft-ietf-rtcweb-data-protocol-05 */
135 #define DATA_CHANNEL_OPEN_RESPONSE 1
136 #define DATA_CHANNEL_ACK 2
137 
138 #define DATA_CHANNEL_RELIABLE 0x00
139 #define DATA_CHANNEL_RELIABLE_UNORDERED 0x80
140 #define DATA_CHANNEL_PARTIAL_RELIABLE_REXMIT 0x01
141 #define DATA_CHANNEL_PARTIAL_RELIABLE_REXMIT_UNORDERED 0x81
142 #define DATA_CHANNEL_PARTIAL_RELIABLE_TIMED 0x02
143 #define DATA_CHANNEL_PARTIAL_RELIABLE_TIMED_UNORDERED 0x82
144 
145 /* http://tools.ietf.org/html/draft-ietf-rtcweb-data-protocol-05 */
146 typedef struct janus_datachannel_open_request {
148  uint8_t msg_type;
150  uint8_t channel_type;
152  uint16_t priority;
154  uint32_t reliability_params;
156  uint16_t label_length;
158  uint16_t protocol_length;
160  char label[0];
161  /* We ignore the Protocol field */
162 } janus_datachannel_open_request;
163 
164 typedef struct janus_datachannel_open_response {
166  uint8_t msg_type;
168  uint8_t error;
170  uint16_t flags;
172  uint16_t reverse_stream;
173 } janus_datachannel_open_response;
174 
175 typedef struct janus_datachannel_ack {
177  uint8_t msg_type;
178 } janus_datachannel_ack;
179 
180 
181 
187 janus_sctp_association *janus_sctp_association_create(void *dtls, uint64_t handle_id, uint16_t udp_port);
188 
191 int janus_sctp_association_setup(janus_sctp_association *sctp);
192 
195 void janus_sctp_association_destroy(janus_sctp_association *sctp);
196 
201 void janus_sctp_data_from_dtls(janus_sctp_association *sctp, char *buf, int len);
202 
207 void janus_sctp_send_data(janus_sctp_association *sctp, char *buf, int len);
208 
209 #endif
210 
211 #endif
ogg_stream_state * stream
Definition: pp-opus.c:31
Semaphors, Mutexes and Conditions.
pthread_mutex_t janus_mutex
Janus mutex implementation.
Definition: mutex.h:19