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//==========================================================================
//
//      tcpecho.c
//
//      Simple test-case for the netconn TCP API: echo on TCP port 7.
//
//==========================================================================
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// -------------------------------------------
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//
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// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
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// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    Simon Kallweit
// Contributors:
// Date:         2009-05-18
// Purpose:
// Description:  Simple test-case for the netconn TCP API: echo on TCP port 7.
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include <cyg/hal/hal_arch.h>
#include <cyg/infra/diag.h>
#include <cyg/infra/testcase.h>
#include <cyg/kernel/kapi.h>
 
#include <lwip.h>
 
#ifdef CYGFUN_LWIP_MODE_SEQUENTIAL
#if LWIP_NETCONN
#if LWIP_TCP
 
#define TCP_PORT 7
 
#define STACK_SIZE CYGNUM_HAL_STACK_SIZE_TYPICAL
 
static char main_stack[STACK_SIZE];
static cyg_thread main_thread;
static cyg_handle_t main_handle;
 
static char tcpecho_stack[STACK_SIZE];
 
static void tcpecho_thread_entry(void *arg)
{
    struct netconn *conn, *newconn;
    err_t err;
 
    // Create a new connection identifier
    conn = netconn_new(NETCONN_TCP);
 
    // Bind connection to well known port number 7
    netconn_bind(conn, NULL, 7);
 
    // Tell connection to go into listening mode
    netconn_listen(conn);
 
    while (1) {
        // Accept new connection
        newconn = netconn_accept(conn);
 
        // Process new connection
        if (newconn != NULL) {
            struct netbuf *buf;
            void *data;
            u16_t len;
 
            while ((buf = netconn_recv(newconn)) != NULL) {
                do {
                    netbuf_data(buf, &data, &len);
                    err = netconn_write(newconn, data, len, NETCONN_COPY);
                    if (err != ERR_OK) {
                    }
                } while (netbuf_next(buf) >= 0);
                netbuf_delete(buf);
            }
 
            // Close connection and discard connection identifier
            netconn_delete(newconn);
        }
    }
}
 
void main_thread_entry(cyg_addrword_t p)
{
    cyg_lwip_sequential_init();
    cyg_lwip_thread_new("tcpecho", tcpecho_thread_entry, NULL,
                        tcpecho_stack, STACK_SIZE, 7);
}
 
void tcpecho_main(void)
{
    CYG_TEST_INIT();
    CYG_TEST_INFO("Testing TCP");
    diag_printf("This test will echo TCP packets on local port %d\n", TCP_PORT);
 
    // Create a main thread, so we can run the scheduler and have time 'pass'
    cyg_thread_create(
        10,                 // Priority - just a number
        main_thread_entry,  // Entry
        0,                  // Entry parameter
        "main",             // Name
        main_stack,         // Stack
        STACK_SIZE,         // Size
        &main_handle,       // Handle
        &main_thread        // Thread data structure
    );
    cyg_thread_resume(main_handle);
    cyg_scheduler_start();
 
    CYG_TEST_FAIL_FINISH("Not reached");
}
 
externC void cyg_start(void)
{
    tcpecho_main();
}
 
#else // LWIP_TCP
#define N_A_MSG "TCP support disabled"
#endif // LWIP_TCP
 
#else // LWIP_NETCONN
#define N_A_MSG "NETCONN support disabled"
#endif // LWIP_NETCONN
 
#else // CYGFUN_LWIP_MODE_SEQUENTIAL
#define N_A_MSG "Not configured in 'Sequential' mode"
#endif // CYGFUN_LWIP_MODE_SEQUENTIAL
 
#ifdef N_A_MSG
externC void
cyg_start(void)
{
    CYG_TEST_INIT();
    CYG_TEST_NA(N_A_MSG);
}
#endif // N_A_MSG