Keysight Technologies X-Series, Programming Manual

Page: 130 / 398

130 Keysight CXG, EXG, and MXG X-Series Signal Generators Programming Guide
Programming Examples
LAN Programming Interface Examples
/***********************************************/
/* map the desired host name to internal form. */
/***********************************************/
hostPtr = gethostbyname(hostname);
if (hostPtr == NULL)
{
fprintf(stderr,"unable to resolve hostname '%s'\n",
hostname);
return INVALID_SOCKET;
}
/*******************/
/* create a socket */
/*******************/
s = socket(AF_INET, SOCK_STREAM, 0);
if (s == INVALID_SOCKET)
{
fprintf(stderr,"unable to create socket to '%s': %s\n",
hostname, strerror(errno));
return INVALID_SOCKET;
}
memcpy(&peeraddr_in.sin_addr.s_addr, hostPtr->h_addr,
hostPtr->h_length);
peeraddr_in.sin_family = AF_INET;
peeraddr_in.sin_port = htons((unsigned short)portNumber);
if (connect(s, (const struct sockaddr*)&peeraddr_in,
sizeof(struct sockaddr_in)) == SOCKET_ERROR)
{
fprintf(stderr,"unable to create socket to '%s': %s\n",
hostname, strerror(errno));
return INVALID_SOCKET;
}