Question on simple RFCOMM server

[Mateus Interciso <mateus@xxxxxxxxxxx>]

Hello, I have a very simple RFCOMM server that I adapted from an 
extremely simple TCP echo server I've made for learning TCP, it's a 
simple fork() server, and while the TCP server works perfeclty, the 
RFCOMM works only with 2 connected clients at the same time, and I'm 
failling to see the problem, can someone help me?

Here's the code:

(The commented part if the TCP part)

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/wait.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/rfcomm.h>

#define MYPORT 10
#define BACKLOG 31
#define MAX_SIZE 80

int main(int argc, char *argv[])
{
  int listenfd, connfd;
  pid_t childpid;
  socklen_t clilen;
  struct sockaddr_rc cliaddr, servaddr;
  char buf[MAX_SIZE];
  int i =0;

  //listenfd = socket(AF_INET, SOCK_STREAM, 0);
  listenfd = socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
  if(listenfd < 0)
  {
    perror("socket");
    exit(errno);
  }

  bzero(&servaddr, sizeof(servaddr));
  servaddr.rc_family = AF_BLUETOOTH;
  servaddr.rc_bdaddr = *BDADDR_ANY;
  servaddr.rc_channel = (uint8_t)MYPORT;
  /*
  servaddr.sin_family = AF_INET;
  servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
  servaddr.sin_port = htons(MYPORT);
  */
  if(bind(listenfd,(struct sockaddr*)&servaddr, sizeof(servaddr)) < 0)
  {
    perror("bind");
    exit(errno);
  }

  if(listen(listenfd,BACKLOG) < 0)
  {
    perror("listen");
    exit(errno);
  }

  while(1)
  {
    clilen = sizeof(cliaddr);
    if((connfd = accept(listenfd, (struct sockaddr*)&cliaddr, &clilen)) 
< 0)
    {
      perror("accept");
      exit(errno);
    }
    if((childpid = fork()) == 0)
    {
      i = 0;
      close(listenfd);
      fprintf(stderr,"[DEBUG] Got connection\n");
      memset(buf,'\0',sizeof(buf));
      //echo server
      if(read(connfd, buf, MAX_SIZE) < 0) perror("read");
      else
        if(send(connfd, buf, strlen(buf), 0) < 0) perror("send");
      exit(0);
    }
    close(connfd);
  }
  return 0;
}


Thanks.
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