Simple solution to send gmail via smtp

[Daisuke]

Hi, @bko

Thanks your replying.

@bko

That is why I asked if you had to do anything special for the Twitter example--it uses a service similar to pushingbox.com but for Twitter. Do you use a proxy to connect to the internet for example?

No. I don't do anything special for the Twitter example, it has connected to internet with same situation of Pushingbox example.

@bko

My code completely throws away the response from the web server (pushingbox.com in this case) and assumes it has connected. You should probably look at client.available() and client.read() the response from the server and print it to the Serial port (over USB) to help debug this problem.

I try this now.

I understood about Gmail encrypted connection which you mentioned.

Thank you.
Daisuke

[Daisuke]

Hi, @bko

@bko

My code completely throws away the response from the web server (pushingbox.com in this case) and assumes it has connected. You should probably look at client.available() and client.read() the response from the server and print it to the Serial port (over USB) to help debug this problem.

I have tried client.available() and andclient.read() with Pushongbox example.
code is here.

const char server[] = "api.pushingbox.com";
const char url[] = "/pushingbox?devid=myDevid";  //replace with your devid
TCPClient myTCP;
TCPClient client;

void setup() {

}

void loop() {
    delay(10000);
    sendGetRequest(server, url);
    delay(30000); //be nice every 30 seconds
}

void sendGetRequest(const char * server, const char * url)
{
    if (myTCP.connect(server, 80)) {
        myTCP.print("GET ");
        myTCP.print(url);
        myTCP.println(" HTTP/1.0");
        myTCP.println("Connection: close");
        myTCP.print("Host: ");
        myTCP.println(server);
        myTCP.println("Accept: text/html, text/plain");
        myTCP.println();
        myTCP.flush();
        Serial.println("*this is client message**");
        Serial.println(client.available());
        Serial.println(client.read());
    } 
}

Then, Serial says

*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1
*this is client message**
0
-1

What does it mean?

[bko]

This means the web host has not responded yet or at all. There are 0 bytes and available and in that case, trying the read returns -1 meaning no data.

You don’t need two TCPClient’s so delete TCPClient client;

Try something like this:

...
myTCP.flush();  // start from your current flush() command:
delay(2000);  // just wait 2 sec for an answer for now
unsigned long nbytes = myTCP.available();
while(nbytes--) {
  Serial.print(myTCP.read()); }
Serial.println();
...

[wgbartley]

Also, you may want to add short delays between some of your TCP commands. We have a development server at work running a really old version of Apache that is cantankerous with rapid-fire TCP commands without short delays between them (10-100 ms).

[Daisuke]

Hi, @bko

I think something wrong with code just Serial says

this is client message*

const char server[] = "api.pushingbox.com";
const char url[] = "/pushingbox?devid=MyDevid";  //replace with your devid
TCPClient myTCP;

void setup() {

}

void loop() {
    Serial.begin(9600);
    delay(10000);
    sendGetRequest(server, url);
    delay(30000); //be nice every 30 seconds
}

void sendGetRequest(const char * server, const char * url)
{
    if (myTCP.connect(server, 80)) {
        myTCP.print("GET ");
        myTCP.print(url);
        myTCP.println(" HTTP/1.0");
        myTCP.println("Connection: close");
        myTCP.print("Host: ");
        myTCP.println(server);
        myTCP.println("Accept: text/html, text/plain");
        myTCP.println();
        myTCP.flush();
        Serial.println("*this is client message**");
        myTCP.flush();  // start from your current flush() command:
        delay(2000);  // just wait 2 sec for an answer for now
        unsigned long nbytes = myTCP.available();
        while(nbytes--) {
        Serial.print(myTCP.read()); }
        Serial.println();
    } 
} 

[Daisuke]

I have succeed to send Email with my Sakura domain email service.
I will upload my code to Github later for sharing with everybody

[bko]

Just be sure: you are replacing the “MyDevid” with your actual devid which looks like “v0123456789abcd”. You have to get that from the pushing box web site, right?

I ask because this is almost exactly the code I used successfully.

I am glad that sendmail has worked for you on Sakura!

[Daisuke]

Just be sure: you are replacing the "MyDevid" with your actual devid which looks like "v0123456789abcd". You have to get that from the pushing box web site, right?

Yes, I am sure. I just did copy and paste.

My Code is here!
Sparkcore Door opening notifier with Email

[Daisuke]

Another question is
How can I connect dry cell battery to the Core? I am afraid it cannot use outlet in some place.

[kennethlimcp]

@Daisuke,

you can plug 3.6 to 6.0V to the Vin pin and ground

http://docs.spark.io/images/core-power1.jpg

Just take note that on average the core using 200-350mA of current and your battery with low mAH is gonna die real fast.

NOTE: DO NOT PLUG IN BOTH USB and Dry cell battery if the dry cell is >5.0V

There’s a diode to for protection the usb but let’s not attempt to do that

[Daisuke]

@kennethlimcp
Thank you