tls pjsua app 分析 pjsua(6)

PJ_INLINE(void) pj_list_init(pj_list_type * node)  //pj_list_type void //初始化
{
    ((pj_list*)node)->next = ((pj_list*)node)->prev = node;
    //typedef struct pj_list pj_list;
}
    #define PJ_DECL_LIST_MEMBER(type)                       \
                                   /** List @a prev. */ \
                                   type *prev;          \
                                   /** List @a next. */ \
                                   type *next 


//参考《C语言和内存》专题中的《C语言内存对齐，提高寻址效率》

初始化完成了，设置config_default默认的值，pjsua_config_default分析(&pjsua_var.ua_cfg)

//查看ua_cfg结构体

typedef struct pjsua_config{
    unsigned        max_calls; //default: 4PJSUA_MAX_CALLS = 32
    unsigned        thread_cnt;
    unsigned        nameserver_count; //如果没有配置服务器 pj_gethostbyname()
    pj_str_t        nameserver[4];//SIP resolver subsystem
    pj_bool_t       force_lr;//Force loose-route Default: 1
    //route/proxy URIs (outbound_proxy* and account's proxy settings)
    unsigned        outbound_proxy_cnt;
    pj_str_t        outbound_proxy[4];
    pj_str_t        stun_domain;
    pj_str_t        stun_host;//HOST[:PORT] port:default=3478

    unsigned        stun_srv_cnt;
    pj_str_t        stun_srv[8];
    pj_bool_t       stun_try_ipv6;//Default: PJ_FALSE
    pj_bool_t       stun_ignore_failure; //Default: PJ_TRUE
    pj_bool_t       stun_map_use_stun2;//Default: PJ_FALSE
    /**
     *  - 0: no information will be added in SDP, and parsing is disabled.
     *  - 1: only the NAT type number is added.
     *  - 2: add both NAT type number and name.
     */
    int         nat_type_in_sdp;//Default: 1
    pjsua_100rel_use require_100rel;//Default: PJSUA_100REL_NOT_USED PRACK
    pjsua_sip_timer_use use_timer;//Default: PJSUA_SIP_TIMER_OPTIONAL 会话计时
    pj_bool_t       enable_unsolicited_mwi;//message waiting indication (MWI) info Default: PJ_TRUE
    pjsip_timer_setting timer_setting;
    unsigned        cred_count;//credentials证书
    pjsip_cred_info cred_info[PJSUA_ACC_MAX_PROXIES];//will be used by all accounts
    pjsua_callback  cb;
    pj_str_t        user_agent;
    pjmedia_srtp_use    use_srtp;//Default: #PJSUA_DEFAULT_USE_SRTP 
    //全实时传输协议(Secure Real-time Transport Protocol)
    /**
     * Valid values are:
     *  0: SRTP does not require secure signaling
     *  1: SRTP requires secure transport such as TLS
     *  2: SRTP requires secure end-to-end transport (SIPS)
     */
    int          srtp_secure_signaling;//Default: #PJSUA_DEFAULT_SRTP_SECURE_SIGNALING
    pj_bool_t        srtp_optional_dup_offer;
    pj_bool_t        hangup_forked_call;//Default: PJ_TRUE

} pjsua_config; 

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