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The function HTTPc_ReqSend is called with the flag HTTPc_FLAG_REQ_NO_BLOCK, so the function is not blocking and will return before the transaction is complete. Therefore the On Transaction Complete hook must be set up to retrieve the HTTP response.
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#define HTTP_SERVER_HOSTNAME "www.example.com"
#define HTTPc_EX_CFG_CONN_NBR_MAX 5u
#define HTTPc_EX_CFG_REQ_NBR_MAX 5u
#define HTTPc_EX_CFG_BUF_SIZE 512u
HTTPc_CONN_OBJ HTTPcEx_ConnTbl[HTTPc_EX_CFG_CONN_NBR_MAX];
HTTPc_REQ_OBJ HTTPcEx_ReqTbl[HTTPc_EX_CFG_REQ_NBR_MAX];
HTTPc_RESP_OBJ HTTPcEx_RespTbl[HTTPc_EX_CFG_REQ_NBR_MAX];
CPU_CHAR HTTPcEx_BufTbl[HTTPc_EX_CFG_CONN_NBR_MAX][HTTPc_EX_CFG_BUF_SIZE ];
CPU_BOOLEAN close_conn = DEF_NO;
CPU_BOOLEAN req1_done = DEF_NO;
CPU_BOOLEAN req2_done = DEF_NO;
/*
*********************************************************************************************************
* HTTPcEx_ReqSendGET()
*
* Description : Example function to Send Requests on persistent connection.
*
* Argument(s) : None.
*
* Return(s) : DEF_YES, if request successfully sent.
* DEF_NO, otherwise.
*********************************************************************************************************
*/
CPU_BOOLEAN HTTPcEx_ReqSendGET (void)
{
HTTPc_CONN_OBJ *p_conn;
HTTPc_REQ_OBJ *p_req1;
HTTPc_REQ_OBJ *p_req2;
HTTPc_RESP_OBJ *p_resp1;
HTTPc_RESP_OBJ *p_resp2;
CPU_CHAR *p_buf;
CPU_BOOLEAN persistent;
CPU_BOOLEAN result;
p_conn = &HTTPcEx_ConnTbl[0];
p_buf = &HTTPcEx_BufTbl[0][0];
p_req1 = &HTTPcEx_ReqTbl[0];
p_req2 = &HTTPcEx_ReqTbl[1];
p_resp1 = &HTTPcEx_RespTbl[0];
p_resp2 = &HTTPcEx_RespTbl[1];
/* ---------------- INIT NEW CONNECTION --------------- */
HTTPc_ConnClr(p_conn, &err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
/* --------------- SET PERSISTENT MODE ---------------- */
persistent = DEF_YES;
HTTPc_ConnSetParam(p_conn,
HTTPc_PARAM_TYPE_PERSISTENT,
&persistent,
&err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
/* --------------- SET CONN'S CALLBACKS --------------- */
#if (HTTPc_CFG_MODE_ASYNC_TASK_EN == DEF_ENABLED)
HTTPc_ConnSetParam(p_conn,
HTTPc_PARAM_TYPE_CONN_CLOSE_CALLBACK,
&HTTPcEx_ConnCloseCallback,
&err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
#endif
/* ----------------- INIT NEW REQUESTS ---------------- */
HTTPc_ReqClr(p_req1, &err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
HTTPc_ReqClr(p_req2, &err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
/* --------- SET REQ/RESP CALLBACK FUNCTIONS ---------- */
#if (HTTPc_CFG_MODE_ASYNC_TASK_EN == DEF_ENABLED)
HTTPc_ReqSetParam(p_req1,
HTTPc_PARAM_TYPE_TRANS_COMPLETE_CALLBACK,
&HTTPcEx_TransDoneCallback,
&err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
HTTPc_ReqSetParam(p_req2,
HTTPc_PARAM_TYPE_TRANS_COMPLETE_CALLBACK,
&HTTPcEx_TransDoneCallback,
&err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
HTTPc_ReqSetParam(p_req1,
HTTPc_PARAM_TYPE_TRANS_ERR_CALLBACK,
&HTTPcEx_TransErrCallback,
&err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
HTTPc_ReqSetParam(p_req2,
HTTPc_PARAM_TYPE_TRANS_ERR_CALLBACK,
&HTTPcEx_TransErrCallback,
&err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
#endif
/* ----------------- OPEN CONNECTION ------------------ */
str_len = Str_Len(HTTP_SERVER_HOSTNAME);
flags = HTTPc_FLAG_NONE;
result = HTTPc_ConnOpen(p_conn,
p_buf,
HTTPc_EX_CFG_BUF_SIZE,
HTTP_SERVER_HOSTNAME,
str_len,
flags,
&err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
if (result == DEF_OK) {
printf("Connection to server succeeded.\n\r");
} else {
printf("Connection to server failed.\n\r");
}
/* ---------------- SEND HTTP REQUESTS ---------------- */
str_len = Str_Len("//");
flags = HTTPc_FLAG_NONE;
DEF_BIT_SET(flags, HTTPc_FLAG_REQ_NO_BLOCK);
result = HTTPc_ReqSend(p_conn,
p_req1,
p_resp1,
HTTP_METHOD_GET,
"//",
str_len,
flags,
&err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
(void)HTTPc_ReqSend(p_conn,
p_req2,
p_resp2,
HTTP_METHOD_GET,
"//",
str_len,
flags,
&err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
while (close_conn == DEF_NO)
{
/* Do OS delay. */
};
/* -------------- CLOSE HTTP CONNECTION --------------- */
close_conn = DEF_NO;
HTTPc_ConnClose(p_conn, &err);
if (err != HTTPc_ERR_NONE) {
return (DEF_FAIL);
}
return (DEF_OK);
}
/*
*********************************************************************************************************
* HTTPcEx_TransDoneCallback()
*
* Description : Example callback function to be notified when an HTTP transaction is completed.
*
* Argument(s) : p_conn_obj Pointer to current HTTPc Connection object.
*
* p_req_obj Pointer to current HTTPc Request object.
*
* p_resp_obj Pointer to current HTTPc Response object.
*
* status Status of the HTTP transaction:
* DEF_OK, transaction succeeded.
* DEF_FAIL, transaction failed.
*
* Return(s) : None.
*********************************************************************************************************
*/
void HTTPcEx_TransDoneCallback (HTTPc_CONN_OBJ *p_conn_obj,
HTTPc_REQ_OBJ *p_req_obj,
HTTPc_RESP_OBJ *p_resp_obj,
CPU_BOOLEAN status)
{
HTTPc_REQ_OBJ *p_req1;
HTTPc_REQ_OBJ *p_req2;
p_req1 = &HTTPcEx_ReqTbl[0];
p_req2 = &HTTPcEx_ReqTbl[1];
if (p_req_obj == p_req1) {
if (status == DEF_OK) {
printf("Transaction #1: %s\n\r", p_resp_obj->ReasonPhrasePtr);
} else {
printf("Transaction #1 failed\n\r");
}
req1_done = DEF_YES;
} else if (p_req_obj == p_req2) {
if (status == DEF_OK) {
printf("Transaction #2: %s\n\r", p_resp_obj->ReasonPhrasePtr);
} else {
printf("Transaction #2 failed\n\r");
}
req2_done = DEF_YES;
} else {
printf("Unexpected error.\n\r");
}
close_conn = req1_done & req2_done;
} |