Squashed 'third_party/rawrtc/re/' content from commit f3163ce8b
Change-Id: I6a235e6ac0f03269d951026f9d195da05c40fdab
git-subtree-dir: third_party/rawrtc/re
git-subtree-split: f3163ce8b526a13b35ef71ce4dd6f43585064d8a
diff --git a/src/ice/ice.h b/src/ice/ice.h
new file mode 100644
index 0000000..b61d362
--- /dev/null
+++ b/src/ice/ice.h
@@ -0,0 +1,205 @@
+/**
+ * @file ice.h Internal Interface to ICE
+ *
+ * Copyright (C) 2010 Creytiv.com
+ */
+
+
+#ifndef RELEASE
+#define ICE_TRACE 1 /**< Trace connectivity checks */
+#endif
+
+
+enum ice_checkl_state {
+ ICE_CHECKLIST_NULL = -1,
+ ICE_CHECKLIST_RUNNING,
+ ICE_CHECKLIST_COMPLETED,
+ ICE_CHECKLIST_FAILED
+};
+
+enum ice_transp {
+ ICE_TRANSP_NONE = -1,
+ ICE_TRANSP_UDP = IPPROTO_UDP
+};
+
+/** ICE protocol values */
+enum {
+ ICE_DEFAULT_Tr = 15, /**< Keepalive interval [s] */
+ ICE_DEFAULT_Ta_RTP = 20, /**< Pacing interval RTP [ms] */
+ ICE_DEFAULT_Ta_NON_RTP = 500, /**< Pacing interval [ms] */
+ ICE_DEFAULT_RTO_RTP = 100, /**< Retransmission TimeOut RTP [ms] */
+ ICE_DEFAULT_RTO_NONRTP = 500, /**< Retransmission TimeOut [ms] */
+ ICE_DEFAULT_RC = 7 /**< Retransmission count */
+};
+
+
+/** Defines a media-stream component */
+struct icem_comp {
+ struct le le; /**< Linked-list element */
+ struct icem *icem; /**< Parent ICE media */
+ struct ice_cand *def_lcand; /**< Default local candidate */
+ struct ice_cand *def_rcand; /**< Default remote candidate */
+ struct ice_candpair *cp_sel; /**< Selected candidate-pair */
+ struct udp_helper *uh; /**< UDP helper */
+ void *sock; /**< Transport socket */
+ uint16_t lport; /**< Local port number */
+ unsigned id; /**< Component ID */
+ bool concluded; /**< Concluded flag */
+ struct turnc *turnc; /**< TURN Client */
+ struct tmr tmr_ka; /**< Keep-alive timer */
+};
+
+/** Defines an ICE media-stream */
+struct icem {
+ struct ice_conf conf; /**< ICE Configuration */
+ struct stun *stun; /**< STUN Transport */
+ struct sa stun_srv; /**< STUN Server IP address and port */
+ struct list lcandl; /**< List of local candidates */
+ struct list rcandl; /**< List of remote candidates */
+ struct list checkl; /**< Check List of cand pairs (sorted) */
+ struct list validl; /**< Valid List of cand pairs (sorted) */
+ uint64_t tiebrk; /**< Tie-break value for roleconflict */
+ bool mismatch; /**< ICE mismatch flag */
+ enum ice_mode lmode; /**< Local mode */
+ enum ice_mode rmode; /**< Remote mode */
+ enum ice_role lrole; /**< Local role */
+ struct tmr tmr_pace; /**< Timer for pacing STUN requests */
+ int proto; /**< Transport protocol */
+ int layer; /**< Protocol layer */
+ enum ice_checkl_state state; /**< State of the checklist */
+ struct list compl; /**< ICE media components */
+ char *lufrag; /**< Local Username fragment */
+ char *lpwd; /**< Local Password */
+ char *rufrag; /**< Remote Username fragment */
+ char *rpwd; /**< Remote Password */
+ ice_connchk_h *chkh; /**< Connectivity check handler */
+ void *arg; /**< Handler argument */
+ char name[32]; /**< Name of the media stream */
+};
+
+/** Defines a candidate */
+struct ice_cand {
+ struct le le; /**< List element */
+ enum ice_cand_type type; /**< Candidate type */
+ uint32_t prio; /**< Priority of this candidate */
+ char *foundation; /**< Foundation */
+ unsigned compid; /**< Component ID (1-256) */
+ struct sa rel; /**< Related IP address and port number */
+ struct sa addr; /**< Transport address */
+ enum ice_transp transp; /**< Transport protocol */
+
+ /* extra for local */
+ struct ice_cand *base; /**< Links to base candidate, if any */
+ char *ifname; /**< Network interface, for diagnostics */
+};
+
+/** Defines a candidate pair */
+struct ice_candpair {
+ struct le le; /**< List element */
+ struct icem *icem; /**< Pointer to parent ICE media */
+ struct icem_comp *comp; /**< Pointer to media-stream component */
+ struct ice_cand *lcand; /**< Local candidate */
+ struct ice_cand *rcand; /**< Remote candidate */
+ bool def; /**< Default flag */
+ bool valid; /**< Valid flag */
+ bool nominated; /**< Nominated flag */
+ enum ice_candpair_state state;/**< Candidate pair state */
+ uint64_t pprio; /**< Pair priority */
+ struct stun_ctrans *ct_conn; /**< STUN Transaction for conncheck */
+ int err; /**< Saved error code, if failed */
+ uint16_t scode; /**< Saved STUN code, if failed */
+};
+
+
+/* cand */
+int icem_lcand_add_base(struct icem *icem, unsigned compid, uint16_t lprio,
+ const char *ifname, enum ice_transp transp,
+ const struct sa *addr);
+int icem_rcand_add(struct icem *icem, enum ice_cand_type type, unsigned compid,
+ uint32_t prio, const struct sa *addr,
+ const struct sa *rel_addr, const struct pl *foundation);
+int icem_rcand_add_prflx(struct ice_cand **rcp, struct icem *icem,
+ unsigned compid, uint32_t prio,
+ const struct sa *addr);
+struct ice_cand *icem_lcand_find_checklist(const struct icem *icem,
+ unsigned compid);
+int icem_cands_debug(struct re_printf *pf, const struct list *lst);
+int icem_cand_print(struct re_printf *pf, const struct ice_cand *cand);
+
+
+/* candpair */
+int icem_candpair_alloc(struct ice_candpair **cpp, struct icem *icem,
+ struct ice_cand *lcand, struct ice_cand *rcand);
+int icem_candpair_clone(struct ice_candpair **cpp, struct ice_candpair *cp0,
+ struct ice_cand *lcand, struct ice_cand *rcand);
+void icem_candpair_prio_order(struct list *lst);
+void icem_candpair_cancel(struct ice_candpair *cp);
+void icem_candpair_make_valid(struct ice_candpair *cp);
+void icem_candpair_failed(struct ice_candpair *cp, int err, uint16_t scode);
+void icem_candpair_set_state(struct ice_candpair *cp,
+ enum ice_candpair_state state);
+void icem_candpairs_flush(struct list *lst, enum ice_cand_type type,
+ unsigned compid);
+bool icem_candpair_iscompleted(const struct ice_candpair *cp);
+bool icem_candpair_cmp(const struct ice_candpair *cp1,
+ const struct ice_candpair *cp2);
+bool icem_candpair_cmp_fnd(const struct ice_candpair *cp1,
+ const struct ice_candpair *cp2);
+struct ice_candpair *icem_candpair_find(const struct list *lst,
+ const struct ice_cand *lcand,
+ const struct ice_cand *rcand);
+struct ice_candpair *icem_candpair_find_st(const struct list *lst,
+ unsigned compid,
+ enum ice_candpair_state state);
+struct ice_candpair *icem_candpair_find_compid(const struct list *lst,
+ unsigned compid);
+struct ice_candpair *icem_candpair_find_rcand(struct icem *icem,
+ const struct ice_cand *rcand);
+int icem_candpair_debug(struct re_printf *pf, const struct ice_candpair *cp);
+int icem_candpairs_debug(struct re_printf *pf, const struct list *list);
+
+
+/* stun server */
+int icem_stund_recv(struct icem_comp *comp, const struct sa *src,
+ struct stun_msg *req, size_t presz);
+
+
+/* ICE media */
+void icem_printf(struct icem *icem, const char *fmt, ...);
+
+
+/* Checklist */
+int icem_checklist_form(struct icem *icem);
+void icem_checklist_update(struct icem *icem);
+
+
+/* component */
+int icem_comp_alloc(struct icem_comp **cp, struct icem *icem, int id,
+ void *sock);
+int icem_comp_set_default_cand(struct icem_comp *comp);
+void icem_comp_set_default_rcand(struct icem_comp *comp,
+ struct ice_cand *rcand);
+void icem_comp_set_selected(struct icem_comp *comp, struct ice_candpair *cp);
+struct icem_comp *icem_comp_find(const struct icem *icem, unsigned compid);
+void icem_comp_keepalive(struct icem_comp *comp, bool enable);
+void icecomp_printf(struct icem_comp *comp, const char *fmt, ...);
+int icecomp_debug(struct re_printf *pf, const struct icem_comp *comp);
+
+
+/* conncheck */
+void icem_conncheck_schedule_check(struct icem *icem);
+void icem_conncheck_continue(struct icem *icem);
+int icem_conncheck_send(struct ice_candpair *cp, bool use_cand, bool trigged);
+
+
+/* icestr */
+const char *ice_mode2name(enum ice_mode mode);
+const char *ice_checkl_state2name(enum ice_checkl_state cst);
+
+
+/* util */
+typedef void * (list_unique_h)(struct le *le1, struct le *le2);
+
+uint64_t ice_calc_pair_prio(uint32_t g, uint32_t d);
+void ice_switch_local_role(struct icem *icem);
+uint32_t ice_list_unique(struct list *list, list_unique_h *uh);