//
// TCP Accept
//

#include "netlib.h"
#include "strlib.h"

int tcp_accept( int sock, struct sockaddr_storage *sa )
{
  /* storage? */
  struct sockaddr_storage ss;
  if ( !sa )
    sa = &ss;
  
  /* tcp request */
  socklen_t len = sizeof(struct sockaddr_storage);
  
  /* accept the incoming connection */
  int cs = accept(sock, (struct sockaddr *)sa, &len );
  
  /* check for errors. if any, ignore new connection */
  if (cs < 0 )
  {
    log_error("tcp_accept");
    return -1;
  }
  
  /* turn off nagle, writes are shipped immediately */
  int flag = 1;
  setsockopt( cs,      /* socket affected */
              IPPROTO_TCP,     /* set option at TCP level */
              TCP_NODELAY,     /* name of option */
              (char *) &flag,  /* the cast is historical cruft */
              sizeof(int));    /* length of option value */
  
  /* log new client */
  if ( cs > 0 )
  {
    char szBuf[256];
    ip_host2name( szBuf, sizeof(szBuf), sa );
    strlcat( szBuf, " client connected", sizeof(szBuf) );
    log_write( szBuf );
  }
  
  return cs;
}