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Author Topic: multiple bugs in ethernet library  (Read 1717 times)
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PaulS
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« Reply #15 on: January 16, 2012, 06:23:52 pm »
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I'd debug this by creating a function to replace all calls to client.print(). In the new method, do a client.print() and a Serial.print() with the same data. If the serial monitor shows the data correctly, but the browser does not, upgrade to Firefox.

If both are wrong, fix your code.
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klauskvik
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« Reply #16 on: January 16, 2012, 08:27:40 pm »
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Quote

I'd debug this by creating a function to replace all calls to client.print(). In the new method, do a client.print() and a Serial.print() with the same data. If the serial monitor shows the data correctly, but the browser does not, upgrade to Firefox.

If both are wrong, fix your code.


Good idea. I tried it, but was stumped on how to pass the pointer to the function:

Standard way:

Code:


EthernetClient client = = server.available();

client.println("<HTLM xxx>");
client.println("<HTML yyy>");



Passing by function:

Code:

EthernetClient client = = server.available();

void Func1(EthernetClient clientptr) {
   clientptr.println("<HTML xxx>");
   clientptr.println("<HTML yyy>");

}

Loop() {
  Func1(client)
}


By this does not seem to work.

Do anyone know of an example with a lot of HTML on a SD card, which is loaded and served to the client (I could then just modify this example)?

Thanks

Klaus
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PaulS
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« Reply #17 on: January 17, 2012, 07:27:48 am »
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By this does not seem to work.
Does not compile? Does not link? Does not send any output to the client?

Come on, now. "does not seem to work" is lacking in meaning and direction.

Pass by reference is probably what you need to do.
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Tobbe
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« Reply #18 on: January 22, 2012, 11:56:55 am »
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Quote from: Tobbe on January 15, 2012, 12:18:24 pm
There probably also is another infinite loop in Ethernet\utility\socket.cpp function sendto()
if it was not possible to send data because for example the host is down (no reply to arp) then the function will get stuck waiting for SEND_OK that never arrives.
i was wrong about this.
i was accidentally using a null buffer to sprintf() when i didn't get a reply and overwrote the ram memory with crap.
i should have noticed this earlier, since i didn't i was looking for the problem in the wrong place.
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aselby
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« Reply #19 on: March 14, 2012, 03:32:56 pm »
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Quote from: Tobbe on January 22, 2012, 11:56:55 am
Quote from: Tobbe on January 15, 2012, 12:18:24 pm
There probably also is another infinite loop in Ethernet\utility\socket.cpp function sendto()
if it was not possible to send data because for example the host is down (no reply to arp) then the function will get stuck waiting for SEND_OK that never arrives.
i was wrong about this.
i was accidentally using a null buffer to sprintf() when i didn't get a reply and overwrote the ram memory with crap.
i should have noticed this earlier, since i didn't i was looking for the problem in the wrong place.

Can you explain that a little more... I'm having an issue where a udp.write just hangs forever so I'm wondering how you found this ?
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