default build with coap, reduce coap module mem usage

This commit is contained in:
funshine 2015-03-15 20:12:29 +08:00
parent 394cced84b
commit 0b95ae08a2
10 changed files with 109 additions and 55 deletions

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@ -34,6 +34,10 @@ Tencent QQ group: 309957875<br />
- cross compiler (done)
# Change log
2015-03-15<br />
bugs fixed: #239, #273.<br />
reduce coap module memory usage, add coap module to default built.
2015-03-11<br />
fix bugs of spiffs.<br />
build both float and integer version [latest releases](https://github.com/nodemcu/nodemcu-firmware/releases/latest).<br />
@ -414,3 +418,25 @@ They'll be available as `u8g.<font_name>` in Lua.
-- first LED green, second LED white
ws2812.writergb(4, string.char(0, 255, 0, 255, 255, 255))
```
####coap client and server
```lua
-- use copper addon for firefox
cs=coap.Server()
cs:listen(5683)
myvar=1
cs:var("myvar") -- get coap://192.168.18.103:5683/v1/v/myvar will return the value of myvar: 1
-- function should tack one string, return one string.
function myfun(payload)
print("myfun called")
respond = "hello"
return respond
end
cs:func("myfun") -- post coap://192.168.18.103:5683/v1/f/myfun will call myfun
cc = coap.Client()
cc:get(coap.CON, "coap://192.168.18.100:5683/.well-known/core")
cc:post(coap.NON, "coap://192.168.18.100:5683/", "Hello")
```

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@ -76,7 +76,7 @@ int coap_parseToken(coap_buffer_t *tokbuf, const coap_header_t *hdr, const uint8
else
if (hdr->tkl <= 8)
{
if (4 + hdr->tkl > buflen)
if (4U + hdr->tkl > buflen)
return COAP_ERR_TOKEN_TOO_SHORT; // tok bigger than packet
tokbuf->p = buf+4; // past header
tokbuf->len = hdr->tkl;
@ -93,7 +93,7 @@ int coap_buildToken(const coap_buffer_t *tokbuf, const coap_header_t *hdr, uint8
{
// inject token
uint8_t *p;
if (buflen < 4 + hdr->tkl)
if (buflen < (4U + hdr->tkl))
return COAP_ERR_BUFFER_TOO_SMALL;
p = buf + 4;
if ((hdr->tkl > 0) && (hdr->tkl != tokbuf->len))
@ -102,7 +102,7 @@ int coap_buildToken(const coap_buffer_t *tokbuf, const coap_header_t *hdr, uint8
if (hdr->tkl > 0)
c_memcpy(p, tokbuf->p, hdr->tkl);
// http://tools.ietf.org/html/draft-ietf-core-coap-18#section-3.1
// http://tools.ietf.org/html/rfc7252#section-3.1
// inject options
return hdr->tkl;
}
@ -111,8 +111,8 @@ int coap_buildToken(const coap_buffer_t *tokbuf, const coap_header_t *hdr, uint8
int coap_parseOption(coap_option_t *option, uint16_t *running_delta, const uint8_t **buf, size_t buflen)
{
const uint8_t *p = *buf;
uint16_t len, delta;
uint8_t headlen = 1;
uint16_t len, delta;
if (buflen < headlen) // too small
return COAP_ERR_OPTION_TOO_SHORT_FOR_HEADER;
@ -179,14 +179,14 @@ int coap_parseOption(coap_option_t *option, uint16_t *running_delta, const uint8
return 0;
}
// http://tools.ietf.org/html/draft-ietf-core-coap-18#section-3.1
// http://tools.ietf.org/html/rfc7252#section-3.1
int coap_parseOptionsAndPayload(coap_option_t *options, uint8_t *numOptions, coap_buffer_t *payload, const coap_header_t *hdr, const uint8_t *buf, size_t buflen)
{
size_t optionIndex = 0;
uint16_t delta = 0;
const uint8_t *p = buf + 4 + hdr->tkl;
const uint8_t *end = buf + buflen;
int rc;
uint16_t delta = 0;
if (p > end)
return COAP_ERR_OPTION_OVERRUNS_PACKET; // out of bounds
@ -215,7 +215,7 @@ int coap_parseOptionsAndPayload(coap_option_t *options, uint8_t *numOptions, coa
return 0;
}
int coap_buildOptionHeader(unsigned short optDelta, size_t length, uint8_t *buf, size_t buflen)
int coap_buildOptionHeader(uint32_t optDelta, size_t length, uint8_t *buf, size_t buflen)
{
int n = 0;
uint8_t *p = buf;
@ -298,7 +298,7 @@ int coap_parse(coap_packet_t *pkt, const uint8_t *buf, size_t buflen)
}
// options are always stored consecutively, so can return a block with same option num
const coap_option_t * coap_findOptions(const coap_packet_t *pkt, uint8_t num, uint8_t *count)
const coap_option_t *coap_findOptions(const coap_packet_t *pkt, uint8_t num, uint8_t *count)
{
// FIXME, options is always sorted, can find faster than this
size_t i;
@ -352,7 +352,7 @@ int coap_build(uint8_t *buf, size_t *buflen, const coap_packet_t *pkt)
uint16_t optDelta = 0;
int rc = 0;
if (p-buf > *buflen)
if (((size_t)(p-buf)) > *buflen)
return COAP_ERR_BUFFER_TOO_SMALL;
optDelta = pkt->opts[i].num - running_delta;
@ -381,17 +381,17 @@ int coap_build(uint8_t *buf, size_t *buflen, const coap_packet_t *pkt)
return 0;
}
void coap_option_nibble(uint16_t value, uint8_t *nibble)
void coap_option_nibble(uint32_t value, uint8_t *nibble)
{
if (value<13)
{
*nibble = (0xFF & value);
}
else
if (((uint32_t)value)<=0xFF+13)
if (value<=0xFF+13)
{
*nibble = 13;
} else if (((uint32_t)value) -269 <=0xFFFF)
} else if (value<=0xFFFF+269)
{
*nibble = 14;
}
@ -405,7 +405,7 @@ int coap_make_response(coap_rw_buffer_t *scratch, coap_packet_t *pkt, const uint
pkt->hdr.code = rspcode;
pkt->hdr.id[0] = msgid_hi;
pkt->hdr.id[1] = msgid_lo;
pkt->numopts = 0;
pkt->numopts = 1;
// need token in response
if (tok) {
@ -442,7 +442,7 @@ unsigned int coap_encode_var_bytes(unsigned char *buf, unsigned int val) {
return n;
}
static uint8_t _token_data[4]={'n','o','d','e'};
static uint8_t _token_data[4] = {'n','o','d','e'};
coap_buffer_t the_token = { _token_data, 4 };
static unsigned short message_id;

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@ -18,13 +18,15 @@ extern "C" {
#define COAP_RESPONSE_CLASS(C) (((C) >> 5) & 0xFF)
// http://tools.ietf.org/html/draft-ietf-core-coap-18#section-3
//http://tools.ietf.org/html/rfc7252#section-3
typedef struct
{
uint8_t ver;
uint8_t t;
uint8_t tkl;
uint8_t code;
uint8_t ver; /* CoAP version number */
uint8_t t; /* CoAP Message Type */
uint8_t tkl; /* Token length: indicates length of the Token field */
uint8_t code; /* CoAP status code. Can be request (0.xx), success reponse (2.xx),
* client error response (4.xx), or rever error response (5.xx)
* For possible values, see http://tools.ietf.org/html/rfc7252#section-12.1 */
uint8_t id[2];
} coap_header_t;
@ -42,23 +44,24 @@ typedef struct
typedef struct
{
uint8_t num;
coap_buffer_t buf;
uint8_t num; /* Option number. See http://tools.ietf.org/html/rfc7252#section-5.10 */
coap_buffer_t buf; /* Option value */
} coap_option_t;
typedef struct
{
coap_header_t hdr;
coap_buffer_t tok;
uint8_t numopts;
coap_option_t opts[MAXOPT];
coap_buffer_t payload;
coap_rw_buffer_t scratch; // scratch->p = malloc(...) , and free it when done.
coap_header_t hdr; /* Header of the packet */
coap_buffer_t tok; /* Token value, size as specified by hdr.tkl */
uint8_t numopts; /* Number of options */
coap_option_t opts[MAXOPT]; /* Options of the packet. For possible entries see
* http://tools.ietf.org/html/rfc7252#section-5.10 */
coap_buffer_t payload; /* Payload carried by the packet */
coap_rw_buffer_t content; // content->p = malloc(...) , and free it when done.
} coap_packet_t;
/////////////////////////////////////////
//http://tools.ietf.org/html/draft-ietf-core-coap-18#section-12.2
//http://tools.ietf.org/html/rfc7252#section-12.2
typedef enum
{
COAP_OPTION_IF_MATCH = 1,
@ -78,7 +81,7 @@ typedef enum
COAP_OPTION_PROXY_SCHEME = 39
} coap_option_num_t;
//http://tools.ietf.org/html/draft-ietf-core-coap-18#section-12.1.1
//http://tools.ietf.org/html/rfc7252#section-12.1.1
typedef enum
{
COAP_METHOD_GET = 1,
@ -87,7 +90,7 @@ typedef enum
COAP_METHOD_DELETE = 4
} coap_method_t;
//http://tools.ietf.org/html/draft-ietf-core-coap-18#section-12.1.1
//http://tools.ietf.org/html/rfc7252#section-12.1.1
typedef enum
{
COAP_TYPE_CON = 0,
@ -96,8 +99,8 @@ typedef enum
COAP_TYPE_RESET = 3
} coap_msgtype_t;
//http://tools.ietf.org/html/draft-ietf-core-coap-18#section-5.2
//http://tools.ietf.org/html/draft-ietf-core-coap-18#section-12.1.2
//http://tools.ietf.org/html/rfc7252#section-5.2
//http://tools.ietf.org/html/rfc7252#section-12.1.2
#define MAKE_RSPCODE(clas, det) ((clas << 5) | (det))
typedef enum
{
@ -107,7 +110,7 @@ typedef enum
COAP_RSPCODE_CHANGED = MAKE_RSPCODE(2, 4)
} coap_responsecode_t;
//http://tools.ietf.org/html/draft-ietf-core-coap-18#section-12.3
//http://tools.ietf.org/html/rfc7252#section-12.3
typedef enum
{
COAP_CONTENTTYPE_NONE = -1, // bodge to allow us not to send option block
@ -155,15 +158,21 @@ struct coap_luser_entry{
coap_luser_entry *next;
};
struct coap_endpoint_t
{
coap_method_t method;
coap_endpoint_func handler;
const coap_endpoint_path_t *path;
const char *core_attr;
coap_luser_entry *user_entry;
struct coap_endpoint_t{
coap_method_t method; /* (i.e. POST, PUT or GET) */
coap_endpoint_func handler; /* callback function which handles this
* type of endpoint (and calls
* coap_make_response() at some point) */
const coap_endpoint_path_t *path; /* path towards a resource (i.e. foo/bar/) */
const char *core_attr; /* the 'ct' attribute, as defined in RFC7252, section 7.2.1.:
* "The Content-Format code "ct" attribute
* provides a hint about the
* Content-Formats this resource returns."
* (Section 12.3. lists possible ct values.) */
coap_luser_entry *user_entry;
};
///////////////////////
void coap_dumpPacket(coap_packet_t *pkt);
int coap_parse(coap_packet_t *pkt, const uint8_t *buf, size_t buflen);
@ -173,11 +182,11 @@ int coap_build(uint8_t *buf, size_t *buflen, const coap_packet_t *pkt);
void coap_dump(const uint8_t *buf, size_t buflen, bool bare);
int coap_make_response(coap_rw_buffer_t *scratch, coap_packet_t *pkt, const uint8_t *content, size_t content_len, uint8_t msgid_hi, uint8_t msgid_lo, const coap_buffer_t* tok, coap_responsecode_t rspcode, coap_content_type_t content_type);
int coap_handle_req(coap_rw_buffer_t *scratch, const coap_packet_t *inpkt, coap_packet_t *outpkt);
void coap_option_nibble(uint16_t value, uint8_t *nibble);
void coap_option_nibble(uint32_t value, uint8_t *nibble);
void coap_setup(void);
void endpoint_setup(void);
int coap_buildOptionHeader(unsigned short optDelta, size_t length, uint8_t *buf, size_t buflen);
int coap_buildOptionHeader(uint32_t optDelta, size_t length, uint8_t *buf, size_t buflen);
#ifdef __cplusplus
}

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@ -11,6 +11,8 @@ void coap_client_response_handler(char *data, unsigned short len, unsigned short
{
NODE_DBG("coap_client_response_handler is called.\n");
coap_packet_t pkt;
pkt.content.p = NULL;
pkt.content.len = 0;
int rc;
if (0 != (rc = coap_parse(&pkt, data, len))){

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@ -1,5 +1,6 @@
#include "user_config.h"
#include "c_types.h"
#include "c_stdlib.h"
#include "coap.h"
@ -8,6 +9,8 @@ size_t coap_server_respond(char *req, unsigned short reqlen, char *rsp, unsigned
NODE_DBG("coap_server_respond is called.\n");
size_t rlen = rsplen;
coap_packet_t pkt;
pkt.content.p = NULL;
pkt.content.len = 0;
uint8_t scratch_raw[4];
coap_rw_buffer_t scratch_buf = {scratch_raw, sizeof(scratch_raw)};
int rc;
@ -25,13 +28,16 @@ size_t coap_server_respond(char *req, unsigned short reqlen, char *rsp, unsigned
else
{
coap_packet_t rsppkt;
rsppkt.content.p = NULL;
rsppkt.content.len = 0;
#ifdef COAP_DEBUG
coap_dumpPacket(&pkt);
#endif
coap_handle_req(&scratch_buf, &pkt, &rsppkt);
if (0 != (rc = coap_build(rsp, &rlen, &rsppkt))){
NODE_DBG("coap_build failed rc=%d\n", rc);
return 0;
// return 0;
rlen = 0;
}
else
{
@ -44,6 +50,11 @@ size_t coap_server_respond(char *req, unsigned short reqlen, char *rsp, unsigned
coap_dumpPacket(&rsppkt);
#endif
}
if(rsppkt.content.p){
c_free(rsppkt.content.p);
rsppkt.content.p = NULL;
rsppkt.content.len = 0;
}
return rlen;
}
}

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@ -1,5 +1,6 @@
#include "c_stdio.h"
#include "c_string.h"
#include "c_stdlib.h"
#include "coap.h"
#include "lua.h"
@ -8,20 +9,24 @@
#include "os_type.h"
static char rsp[512] = "";
const uint16_t rsplen = 512;
void build_well_known_rsp(void);
void build_well_known_rsp(char *rsp, uint16_t rsplen);
void endpoint_setup(void)
{
coap_setup();
build_well_known_rsp();
}
static const coap_endpoint_path_t path_well_known_core = {2, {".well-known", "core"}};
static int handle_get_well_known_core(const coap_endpoint_t *ep, coap_rw_buffer_t *scratch, const coap_packet_t *inpkt, coap_packet_t *outpkt, uint8_t id_hi, uint8_t id_lo)
{
return coap_make_response(scratch, outpkt, (const uint8_t *)rsp, c_strlen(rsp), id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_CONTENT, COAP_CONTENTTYPE_APPLICATION_LINKFORMAT);
outpkt->content.p = (uint8_t *)c_zalloc(MAX_PAYLOAD_SIZE); // this should be free-ed when outpkt is built in coap_server_respond()
if(outpkt->content.p == NULL){
NODE_DBG("not enough memory\n");
return COAP_ERR_BUFFER_TOO_SMALL;
}
outpkt->content.len = MAX_PAYLOAD_SIZE;
build_well_known_rsp(outpkt->content.p, outpkt->content.len);
return coap_make_response(scratch, outpkt, (const uint8_t *)outpkt->content.p, c_strlen(outpkt->content.p), id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_CONTENT, COAP_CONTENTTYPE_APPLICATION_LINKFORMAT);
}
static const coap_endpoint_path_t path_variable = {2, {"v1", "v"}};
@ -211,13 +216,13 @@ const coap_endpoint_t endpoints[] =
{(coap_method_t)0, NULL, NULL, NULL, NULL}
};
void build_well_known_rsp(void)
void build_well_known_rsp(char *rsp, uint16_t rsplen)
{
const coap_endpoint_t *ep = endpoints;
int i;
uint16_t len = rsplen;
c_memset(rsp, 0, sizeof(rsp));
c_memset(rsp, 0, len);
len--; // Null-terminated string

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@ -24,6 +24,8 @@ coap_pdu_t * coap_new_pdu(void) {
c_free(pdu);
return NULL;
}
pdu->pkt->content.p = NULL;
pdu->pkt->content.len = 0;
pdu->msg.p = (uint8_t *)c_zalloc(MAX_REQUEST_SIZE+1); // +1 for string '\0'
if(!pdu->msg.p){

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@ -27,7 +27,7 @@
#define LUA_USE_MODULES_OW
#define LUA_USE_MODULES_BIT
#define LUA_USE_MODULES_MQTT
// #define LUA_USE_MODULES_COAP // need about 1k more ram for now
#define LUA_USE_MODULES_COAP
#define LUA_USE_MODULES_U8G
#define LUA_USE_MODULES_WS2812
#endif /* LUA_USE_MODULES */

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@ -7,6 +7,6 @@
#define NODE_VERSION_INTERNAL 0U
#define NODE_VERSION "NodeMCU 0.9.5"
#define BUILD_DATE "build 20150311"
#define BUILD_DATE "build 20150315"
#endif /* __USER_VERSION_H__ */

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@ -227,6 +227,8 @@ static void coap_response_handler(void *arg, char *pdata, unsigned short len)
struct espconn *pesp_conn = arg;
coap_packet_t pkt;
pkt.content.p = NULL;
pkt.content.len = 0;
// static uint8_t buf[MAX_MESSAGE_SIZE+1] = {0}; // +1 for string '\0'
uint8_t buf[MAX_MESSAGE_SIZE+1] = {0}; // +1 for string '\0'
c_memset(buf, 0, sizeof(buf)); // wipe prev data
@ -421,7 +423,6 @@ static int coap_request( lua_State* L, coap_method_t m )
extern coap_luser_entry *variable_entry;
extern coap_luser_entry *function_entry;
extern void build_well_known_rsp(void);
// Lua: coap:var/func( string )
static int coap_regist( lua_State* L, const char* mt, int isvar )
{
@ -456,8 +457,6 @@ static int coap_regist( lua_State* L, const char* mt, int isvar )
h->L = L;
h->name = name;
build_well_known_rsp(); // rebuild .well-known
NODE_DBG("coap_regist is called.\n");
return 0;
}