I wold like to make me a REST API with string values and more string Keys.

like: ~http://url.tld/foo/bar/xy to get "bar" and do more...

Can somebody tell me how to get the second word out of the URL? In this case "bar".

The tutorial show's how to use /arduino/digital/13/1 as to set pin 13 High.I would like to get a different syntax. Something like this: arduino/device1/switch/on

By now i searched quite long and tested different things as you can see below, but i can't get more than one word caught to trigger from the client object.

is boils down to the question why my client object changes the payload.

this part:

void process(BridgeClient client) {  String url0 = client.readString();  Console.print("process url0: ");      // --> is "bar/xy"  Console.println(url0);  String command = client.readStringUntil('/');  String url1 = client.readString();  Console.print("process url1: ");  Console.println(url1);               // --> is "" aka:empty!

i made a MWE to show what i already did:

// Libraries:#include <Bridge.h>#include <BridgeServer.h>#include <BridgeClient.h>#include <Console.h>// Constants:const bool on = HIGH;const bool off = LOW;// Objects:BridgeServer server;void setup() {  pinMode(6, INPUT_PULLUP);  Bridge.begin();  server.begin();  Console.begin();  while (!Console);  Console.println("setup done..");}void loop() {  BridgeClient client = server.accept();  if (client) {    process(client);    client.stop();  }}void process(BridgeClient client) {    String url0 = client.readString();    Console.print("process url0: ");   // --> is "bar/xy"    Console.println(url0);    String command = client.readStringUntil('/');    String url1 = client.readString();    Console.print("process url1: ");    Console.println(url1);             // --> is "" aka:empty!  if (command == "device1") {    device1(client);  }  if (command == "status") {    Console.print("process: command == status  | command: ");    Console.println(command);    statusCommand(client);  }}void device1(BridgeClient client) {  String URL = client.readString();                                Console.println("URL:");  Console.println(URL);                               // ---> is "on"  String mode = client.readStringUntil('\r');  Console.println("mode:");  Console.println(mode);                            // ---> is ""  String value = getStringPartByNr(URL, '/', 1);  Console.println("value:");  Console.println(value);                            // ---> is ""  power(on);  if ( URL == "on"){    client.print(F("found /on"));    power(on);  }  else if ( URL == "off"){    client.print(F("found /off"));    power(off);  }}void power(bool on_off){  bool checkpin = digitalRead(6);                          // machine state  if (checkpin == LOW && on_off == HIGH) {        // means power is off and on is called    digitalWrite(13, HIGH);    Console.print(" checkpin == LOW && on_off == HIGH [1] ");  }  else if (checkpin == HIGH && on_off == LOW) { // means power is on and off is called    digitalWrite(13, LOW);    Console.print(" checkpin == HIGH && on_off == LOW [2] ");  }}void statusCommand(BridgeClient client) {}// splitting a string and return the part nr index split by separatorString getStringPartByNr(String data, char separator, int index) {    int stringData = 0;        //variable to count data part nr     String dataPart = "";      //variable to hold the return text    for(int i = 0; i<data.length()-1; i++) { //Walk through the text one letter at a time        if(data[i]==separator) { //Count the number of times separator character appears             stringData++;        } else if(stringData==index) { //get the text when separator is the rignt one            dataPart.concat(data[i]);        } else if(stringData>index) { //return text and stop if the next separator appears             return dataPart;            break; // - to save CPU-time        }    }    return dataPart; //return text if this is the last part}

• maybe you should not create a copy of the Cllient object when passing it into a function. use reference parameterBridgeClient &client

  Juraj

  – Juraj♦

  2018-03-31 09:36:00 +00:00

  CommentedMar 31, 2018 at 9:36
• i added it as screenshoot. its not clear visible because the console is white as well but underneeth the console output you see that im calling [myarduino].local/device1/on in a browser and the output of url0 [String url0 = client.readString();] is the full string but then after one time calling client.readStringUntil('/') the client seams to be manipulated and url1 [String url1 = client.readString(); ] is empty.

  novski

  – novski

  2018-03-31 13:45:07 +00:00

  CommentedMar 31, 2018 at 13:45
• same for 'BridgeClient &client'.

  novski

  – novski

  2018-03-31 13:49:07 +00:00

  CommentedMar 31, 2018 at 13:49
• so you read all the input into ur10 with readString() and the expect to read what from it with readStringUntil()?

  Juraj

  – Juraj♦

  2018-03-31 18:28:28 +00:00

  CommentedMar 31, 2018 at 18:28
• i expect url1 to be same as url0 because im reading the same object. why is it not the same?

  novski

  – novski

  2018-04-01 07:23:38 +00:00

  CommentedApr 1, 2018 at 7:23

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