[Contiki-developers] example tcp connection program
Andreas Krumholz
I'm new to contiki. I tried for several weeks now to write a simple
program to connect a client with a server via tcp. my problem is that
my client doesnt send any packages. my question is can anyone post me
a real simple client server program with a functional tcp or explain
to me my mistake.
my code for the client is:
#include <string.h>
#include <stdio.h>
#include "contiki-net.h"
static struct psock csocket;
static char buffer[50];
static uip_ipaddr_t hostaddr;
static uip_ipaddr_t serveraddr;
static struct uip_conn *client_con;
static PT_THREAD(handle_connection(struct psock *p))
{
PSOCK_BEGIN(p);
PSOCK_SEND_STR(p, "Welcome, please type something and press return.\n");
PSOCK_READTO(p, '\n');
PSOCK_SEND_STR(p, "Got the following data: ");
PSOCK_SEND(p, (uint8_t*)buffer, PSOCK_DATALEN(p));
PSOCK_SEND_STR(p, "Good bye!\r\n");
PSOCK_CLOSE(p);
PSOCK_END(p);
}
PROCESS(client_process, "Test Client");
AUTOSTART_PROCESSES(&client_process);
PROCESS_THREAD(client_process, ev, data) {
PROCESS_BEGIN();
uip_ipaddr(&hostaddr, 192, 168, 1, 2);
uip_sethostaddr(&hostaddr);
uip_ipaddr(&serveraddr, 192, 168, 1, 1);
while(1) {
client_con = tcp_connect(&serveraddr, UIP_HTONS(50000), NULL);
PROCESS_WAIT_EVENT_UNTIL(ev == tcpip_event);
if(uip_connected()) {
PSOCK_INIT(&csocket, (uint8_t*)buffer, sizeof(buffer));
handle_connection(&csocket);
}
}
PROCESS_END();
}
and the server:
#include <string.h>
#include <stdio.h>
#include "contiki-net.h"
static struct psock ssocket;
static char buffer[50];
static uip_ipaddr_t hostaddr;
static PT_THREAD(handle_connection(struct psock *p))
{
PSOCK_BEGIN(p);
PSOCK_SEND_STR(p, "Welcome, please type something and press return.\n");
PSOCK_READTO(p, '\n');
PSOCK_SEND_STR(p, "Got the following data: ");
PSOCK_SEND(p, (uint8_t*)buffer, PSOCK_DATALEN(p));
PSOCK_SEND_STR(p, "Good bye!\r\n");
PSOCK_CLOSE(p);
PSOCK_END(p);
}
PROCESS(server_process, "Test Server");
AUTOSTART_PROCESSES(&server_process);
PROCESS_THREAD(server_process, ev, data) {
PROCESS_BEGIN();
uip_ipaddr(&hostaddr, 192, 168, 1, 1);
uip_sethostaddr(&hostaddr);
tcp_listen(UIP_HTONS(50000));
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == tcpip_event);
if(uip_connected()) {
PSOCK_INIT(&ssocket, (uint8_t*)buffer, sizeof(buffer));
while(!(uip_aborted() || uip_closed())) {
PROCESS_WAIT_EVENT_UNTIL(ev == tcpip_event);
handle_connection(&ssocket);
}
}
}
PROCESS_END();
}
thanks!
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