bosko lekovic
nova proba
TcpServerToFlash.cpp
- Committer:
- Bosko Lekovic
- Date:
- 2020-05-17
- Revision:
- 18:5ee53205451a
- Parent:
- 17:74c41e3f10b8
- Child:
- 19:7bdb1a10043f
File content as of revision 18:5ee53205451a:
#include "mbed.h"
//#include "string.h"
#include "EthernetSetup.h"
#include "dxml.h"
#include "TcpServerToFlash.h"
#include "doHTML.h"
#include "dataFlash.h"
#include "UdpClients.h"
#include "TcpClients.h"
#include "SerialCom.h"
#define SOCKET_PORT 80
//Semaphore s(1); /* semafor da ne dozvoli vise of 1 server thred-a, upravlja delet-ovanjem threda*/
//Mutex m;
volatile int tcpServerBlock=0; // Blokira serijsku komunikaciju tokom upisa u data flash
extern EthernetInterface *gp_eth;
/* globalni pointer na tcpServer RX Thread za parametarizaciju */
static Thread *gp_tcpServerThread = NULL; //new Thread;
void tcpServerRx_fun( void );
static TCPSocket *gp_tcpSocket=NULL; /* socket za prijem zahteva za konekciju */
static Thread *gp_thr = NULL; /* pointer gde se smesta thread za brisanje */
const char sendHTTPheader[]= "HTTP/1.1 200 OK\r\nConnection: close\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE html>";
typedef void(*PF_PSTP)(struct SThreadParam *);
// parametri thread-a za uspostavljenje konekcije
struct SThreadParam
{
Thread *p_Thread; // sopstveni pointer
void * p_param; // pointer za parametre thread-a, u ovom slucaju na socket koji je accept-van
PF_PSTP pf_pstp; // pointer na funkciju koju thread callback-uje
};
/****************** inicijalizacija u mainu ************************/
char* html_string;
void inic_TcpServerToFlash( void )
{
// extern C_HTMLparse *gpc_html;
// html_string = gpc_html->getHTML_free( ); // konvertovanje HTMLa u niz
if( gp_tcpServerThread ) delete gp_tcpServerThread;
gp_tcpServerThread = new Thread();
gp_tcpServerThread->start(tcpServerRx_fun);
}
/***************** periodicna prozivka u mainu *************************/
// zatvaranje thread-a nakon http razmene
void cleanTcpServerToFlashThread( void )
{
if(gp_thr)
{
printf("Brisanje thread-a %d\n\r", gp_thr); fflush(stdout);
gp_thr->join();
delete gp_thr;
gp_thr = NULL;
printf("Obrisan thread %d\n\r", gp_thr);
// s.release();
}
}
void _semafor_release(void ) {/* s.release();*/}
/************** Trajni TCPServer thread *********************************/
volatile int bws=0; //block web server
extern void rcpServerInstance_fun( SThreadParam *ps_thr );
void tcpServerRx_fun( void )
{
while( true )
{
printf("____Otvoren TCP server rx thread____ \n\r");
if( gp_tcpSocket ) {delete gp_tcpSocket; gp_tcpSocket = NULL; } /* ima smisla ako se thread nasilno zatvara */
gp_tcpSocket = new TCPSocket;
if(gp_tcpSocket->open( gp_eth ) != 0) break;
gp_tcpSocket->bind(SOCKET_PORT);
if(gp_tcpSocket->listen(2) != 0 )
{ printf("greska listenovanja na socketu\n\r"); break;}
TCPSocket *p_soc;
nsapi_error_t err=NULL;
int nos = 0;
while( (p_soc = gp_tcpSocket->accept( &err)) )
{
printf("\n\rTCP WEB SERVER: zahtev za konekciju - socket = %d err = %d\n\r", p_soc, err);fflush(stdout);
// s.wait(); // semafor sprecava novu konekciju dok se stara ne zavrsi
printf("TCP WEB SERVER: Broj %d\n\r", ++nos); fflush(stdout);
bws = 1;
Thread *p_thr = new Thread( );
struct SThreadParam *ps_thp = new struct SThreadParam; // alokacija ps_thp
ps_thp->p_param = (void*)p_soc;
ps_thp->p_Thread = p_thr;
ps_thp->pf_pstp = rcpServerInstance_fun;
printf("TCPThread: NOVA KONEKCIJA! thread %d socket %d struct Sst %d\n\r", ps_thp->p_Thread, p_soc, ps_thp);fflush(stdout);
p_thr->start( callback( ps_thp->pf_pstp, ps_thp ));
while(bws);
}
printf("TCP WEB SERVER: Ispad iz accept while!!! socket = %d err = %d\n\r", p_soc, err);fflush(stdout);
}
}
/***************** privremeni TCPServer thread za klijenta ******************/
// thread je jednokratan - primi http telegram i odgovori - ako je GET ili POST upit
void rcpServerInstance_fun( struct SThreadParam *ps_thp )
{
TCPSocket *p_soc = (TCPSocket *)ps_thp->p_param;
// m.lock();
// tcpServerBlock++;
char inbuff[1500];
int restart = 0;
int n, nr, nt;
printf("tcpServThread: Otvoren socket %d\n\r",(int)p_soc);
while(true)
{
extern C_HTMLparse *gpc_html;
printf("tcpServThread: cekam prijem od klijenta \n\r");
SocketAddress sockAddr;
p_soc->getpeername( &sockAddr );
p_soc->set_timeout(10); // non-blocking pruzimanje bajtova na 10ms
n=0;
int k=10, t=0;
do
{
t++;
nr = p_soc->recv( &(inbuff[n]), sizeof(inbuff)-n); // razmotriti obradu nr=0 !!!
if(nr > 0) n += nr;
else k--;
if(n>= sizeof(inbuff)) break;
}
while( ((n==0) || (nr > 0) ) && k );
printf( "tcpServThread: broj prolaza t=%d k=%d n=%d nr=%d\n\r ", t, k, n, nr);
if( (nr < 0) && (nr != NSAPI_ERROR_WOULD_BLOCK) ) break;
if( !k ) break;
if(n>0)
{
//u inbuff-u je http paket
printf("tcpServThread: primljeno = %d bajtova \n\r",n);
fflush(stdout);
inbuff[n]=0;
//raspakivanje sadrzaja, a ako je POST preuzimanje parametara
char ** strniz = gpc_html->doHTTP_freereturn( inbuff);
char *type = strniz[0];
char *description = strniz[1];
if( (!strcmp( type, "GET") && !strcmp( description, "HTTP")) || !strcmp( type, "POST") )
{
// putHTMLintoFLASH( gpc_html );
//putFLASHintoHTML( gpc_html );
if(!strcmp( type, "POST") )
{
tcpServerBlock++;
printf("tcpServThread: ___stop komunikacije\n\r");
// scomRxThreadCancel();
tcpRxThreadsCancel();
printf(" STACK: size=%d free=%d used=%d max used=%d\n\r", ps_thp->p_Thread->stack_size(),ps_thp->p_Thread->free_stack(),ps_thp->p_Thread->used_stack(),ps_thp->p_Thread->max_stack());
// udpRxThreadsCancel();
// wait(0.1);
gpc_html->htmlPOST_fun( ); // setovanje parametara u HTML format
putHTMLintoFLASH( gpc_html ); // upis parametara iz HTMLa u FLASH
// vratiti podatke iz Flasha u HTML !!!!!!
// ethRestart( );
// udpRxThreadsRiseUp( );
// scomRxThreadRiseUp( );
tcpRxThreadsRiseUp( );
restart = 1;
}
// ODGOVOR - slanje odgovora klijentu
p_soc->set_timeout(-1); // blocking
// slanje HTTP headera
// if(strcmp( type, "POST") )
{
n = p_soc->send(sendHTTPheader, strlen(sendHTTPheader));
printf("tcpServThread: predaja HTTPheader: posato bajtova = %d, %d \n\r", n, strlen(sendHTTPheader));
// putFLASHintoHTML( gpc_html ); // preuzimanje podataka iz flasha u html
auto html_string = gpc_html->getHTML_free( ); // konvertovanje HTMLa u niz
n = p_soc->send(html_string, strlen(html_string)); // slanje HTML-a
printf("tcpServThread: PREDAJA dataBuffer: posato bajtova = %d, %d \n\r", n, strlen(html_string));
free(html_string); // oslobadjanje memorije HTML niza
}
}
free(type);
free( description);
free(strniz);
}
//!!! p_soc->close(); // zatvaranje socketa
// if(n<0)
{printf("tcpServThread: BREAK posle predaje\n\r"); break;}
} // end while
{printf("tcpServThread: zatvaranje socketa\n\r"); fflush(stdout);}
p_soc->close(); // zatvaranje socketa
printf("tcpServThread: restart = %d\n\r",restart);
if( restart )
{
printf("tcpServThread:___restart komunikacije\n\r");
// ethRestart( );
// // udpRxThreadsRiseUp( );
// tcpRxThreadsRiseUp( );
// // scomRxThreadRestart( );
restart = 0;
}
printf(" STACK: size=%d free=%d used=%d max used=%d\n\r", ps_thp->p_Thread->stack_size(),ps_thp->p_Thread->free_stack(),ps_thp->p_Thread->used_stack(),ps_thp->p_Thread->max_stack());
{printf("tcpServThread: zatvaranje thread-a\n\r"); fflush(stdout);}
// zatvaranje thread-a
gp_thr = ps_thp->p_Thread;// poslati pointer da se delete-uje
{printf("tcpServThread: brisanje parametara\n\r"); fflush(stdout);}
delete ps_thp; // relokacija ps_thp
bws = 0;
//m.unlock();
if( tcpServerBlock) {tcpServerBlock--;printf("tcpServThread: tcpServerBlock=%d\n\r", tcpServerBlock);}
}