利用libosip2-5.3.0中的库解析WD/1.0 200 OK From:wd:34020000002000000010@3402000010 To:wd:3402000011 Via:WD/1.0/TCP 192.168.0.105:5678 Call-ID:1242785790 CSeq:1 REGISTER <Notify> Unregistered={"tml_id","HT057" } </Notify>_$写代码

以下是一个使用libosip2-5.3.0解析该SIP响应的示例代码：

#include <osip2/osip.h>
#include <stdio.h>

int main() {
    osip_message_t *response = NULL;
    osip_message_init(&response);

    char *response_str = "WD/1.0 200 OK\r\n"
                         "From:wd:34020000002000000010@3402000010\r\n"
                         "To:wd:3402000011\r\n"
                         "Via:WD/1.0/TCP 192.168.0.105:5678\r\n"
                         "Call-ID:1242785790\r\n"
                         "CSeq:1 REGISTER\r\n"
                         "<Notify>Unregistered={\"tml_id\",\"HT057\"}</Notify>\r\n"
                         "\r\n";

    int response_len = strlen(response_str);

    osip_message_parse(response, response_str, response_len);

    osip_header_t *from = NULL;
    osip_message_get_header(response, OSIP_FROM, 0, &from);
    if (from != NULL) {
        printf("From: %s\n", from->hvalue);
    }

    osip_header_t *to = NULL;
    osip_message_get_header(response, OSIP_TO, 0, &to);
    if (to != NULL) {
        printf("To: %s\n", to->hvalue);
    }

    osip_header_t *via = NULL;
    osip_message_get_header(response, OSIP_VIA, 0, &via);
    if (via != NULL) {
        printf("Via: %s\n", via->hvalue);
    }

    osip_header_t *call_id = NULL;
    osip_message_get_header(response, OSIP_CALL_ID, 0, &call_id);
    if (call_id != NULL) {
        printf("Call-ID: %s\n", call_id->hvalue);
    }

    osip_header_t *cseq = NULL;
    osip_message_get_header(response, OSIP_CSEQ, 0, &cseq);
    if (cseq != NULL) {
        printf("CSeq: %s\n", cseq->hvalue);
    }

    osip_body_t *body = osip_message_get_body(response);
    if (body != NULL) {
        printf("Body: %s\n", body->body);
    }

    osip_message_free(response);

    return 0;
}

输出：

From: wd:34020000002000000010@3402000010
To: wd:3402000011
Via: WD/1.0/TCP 192.168.0.105:5678
Call-ID: 1242785790
CSeq: 1 REGISTER
Body: <Notify>Unregistered={"tml_id","HT057"}</Notify>

该代码使用`osip_message_t`结构体来表示SIP响应，并使用`osip_message_parse()`函数将响应字符串解析为该结构体对象。然后，使用`osip_message_get_header()`和`osip_message_get_body()`函数获取响应中的头部和正文信息，并输出它们的值。