open-tcp
xod-dev/w5500/open-tcp
Open a TCP connection to the specified server
Possible errors:
— Can't open TCP connection
open-tcp
@/open-tcp
Open a TCP connection to the specified server
Possible errors:
— Can't open TCP connection
INET@/w5500-inet
An internet connection
HOSTstring
Server name
PORTnumber
A destination server port number
CONNpulse
Open the connection
DONEpulse
Pulses when the connection is successfully open
SOCKxod/net/socket
The socket connected
INET'@/w5500-inet
An internet connection
C++ implementation
#pragma XOD evaluate_on_pin disable
#pragma XOD evaluate_on_pin enable input_CONN
#pragma XOD error_raise enable
#include <SPI.h>
#include <Ethernet2.h>
node {
void evaluate(Context ctx) {
if (!isInputDirty<input_CONN>(ctx))
return;
auto client = EthernetClient();
auto serverName = getValue<input_HOST>(ctx);
auto port = getValue<input_PORT>(ctx);
auto len = length(serverName);
char serverNameBuff[len + 1];
dump(serverName, serverNameBuff);
serverNameBuff[len] = '\0';
if (client.connect(serverNameBuff, port)) {
emitValue<output_DONE>(ctx, 1);
} else {
raiseError(ctx);
}
emitValue<output_SOCK>(ctx, client.getSocketNumber());
emitValue<output_INETU0027>(ctx, getValue<input_INET>(ctx));
}
}