Hi everyone, I’m experiencing issues with the TCPClient, and I’m hoping someone here can help me out. My actual goal is audio streaming, but it turns out I cannot get even the basic ‘Google’ example from the docs to work properly! This one here . The behavior I’m seeing is that the download starts …

Could you share the code you used to get the times?

Sure, here it is: TCPClient client; byte server[] = { 74, 125, 224, 72 }; // Google system_tick_t start; void setup() { // Make sure your Serial Terminal app is closed before powering your Core Serial.begin(9600); // Now open your Serial Terminal, and hit any key to continue! while(!Seria…

i noticed something strange with Serial.read() in one of my programs that did the same. i found adding a 10ms delay in the if(Serial.available()) loop fixed it. im not sure if its the checking available or the read that messes it up but it fixed the problem. I tried many different ways so that i d…

Hi @mleonh , No problem! It looks like you’re using client.read(), which pulls in one byte at a time. I tried increasing the buffer size to 512, and I modified the firmware a bit, how about (note, this requires modifying core-firmware/inc/spark_wiring_tcpclient.h, and increasing the buffer size). …

Thanks for your help. I tried your code with a TCPCLIENT_BUF_MAX_SIZE of 512 bytes. The stalling still occurs – in fact, it’s even more visible and happens sooner than before: 7 - download total: 218 87 - download total: 436 111 - download total: 654 551 - download total: 872 575 - download total: …

i couldn’t get the built-in gethostbyname to work (the function that does the DNS lookup) so i made my own here [image] [Submission] DNS lookup (alternate getHostByName) I couldn’t get the inbuilt DNS lookup to work when using TCP Client on a very slow internet connection, so i ported th…

[image] mleonh: What's interesting is that including "spark_disable_cloud.h" (and using the ip byte array instead of the Oooh, that's a great clue. Okay, lets open an issue for this I think: https://github.com/spark/core-firmware/issues/239 Thanks! David

could it be because the while client.available loop blocks the cloud connection what happens if you add a delay (which calls spark wlan loop) instead of disabling the cloud?

Hmm… I tried leaving the cloud on and adding Spark_WLAN_Loop() between reads, and it didn’t seem to help. Maybe this is something @satishgn could check out? Thanks, David

one thing i notice is there is no way to tell if the buffer is getting emptied… ie client available gets to 0, the while loop goes false, the code continues, client is still connected so the if loop gets skipped -> back to loop() the first if (done) is false, then data is available again so the whi…

TCPClient slowing to a crawl

Troubleshooting

Hootie81 July 22, 2014, 10:51am 8

i couldn’t get the built-in gethostbyname to work (the function that does the DNS lookup) so i made my own here

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TCPClient slowing to a crawl

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