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Stability fixes on unstable network (#304): 

- when a sequence number mismatch is received and the wifibox expects the chunk immediately following the current one, skip ahead; this often happens after a network disconnect.
- retry sending a print part when the wifibox was disconnected (i.e. checkStatus failed and set state to WIFIBOX_DISCONNECTED_STATE).
This commit is contained in:
Wouter R 2016-04-19 18:03:52 +02:00
parent 0a9ceee49a
commit 533968bb04
1 changed files with 20 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
js/Printer.js
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@ -37,6 +37,9 @@ function Printer() {
Printer.GCODE_BUFFER_WAIT_LOAD_RATIO = 0.75;
Printer.BUFFER_SPACE_WAIT_TIMEOUT = 30000; // how often to recheck buffer load
//time to wait when wifibox connection is lost while printing
Printer.DISCONNECTED_RETRY_DELAY = 5000;
Printer.MAX_LINES_PER_POST = 500; // max amount of gcode lines per post (limited because WiFi box can't handle too much)
Printer.MAX_GCODE_SIZE = 10; // max size of gcode in MB's (estimation)
@ -207,7 +210,7 @@ function Printer() {
dataType: 'json',
timeout: this.sendPrintPartTimeoutTime,
success: function(data){
//console.log("Printer:sendPrintPart response: ",data);
//console.log("Printer:sendPrintPart success response: ", data);
if(data.status == "success") {
if (completed) {
@ -224,6 +227,13 @@ function Printer() {
if(self.state == Printer.PRINTING_STATE || self.state == Printer.BUFFERING_STATE) {
//console.log("Printer:sendPrintPart:sending next part");
self.sendPrintPart(sendIndex + sendLength, sendLength);
} else if (Printer.WIFIBOX_DISCONNECTED_STATE) {
console.warn("Printer:sendPrintPart: wifibox connection lost while printing, retrying in " + (Printer.DISCONNECTED_RETRY_DELAY / 1000) + " seconds");
clearTimeout(self.retrySendPrintPartDelay);
self.retrySendPrintPartDelay = setTimeout(function() {
console.log("Printer:sendPrintPart: retrying after wifibox disconnect was detected");
self.sendPrintPart(sendIndex, sendLength);
}, Printer.DISCONNECTED_RETRY_DELAY);
}
}
} else if (data.status == "fail") {
@ -231,10 +241,12 @@ function Printer() {
console.log("Printer:sendPrintPart: print server reported buffer full, pausing data transmission");
//this will wait in a setTimeout loop until enough room is available and then call sendPrintPart again.
self.waitForBufferSpace(sendIndex, sendLength);
} else if (data.data.status == "seq_num_mismatch" && data.data.seq_number == seqNum) {
console.warn("Printer:sendPrintPart: received sequence error, server is one chunk ahead. Proceeding with next chunk...");
self.sendPrintPart(sendIndex + sendLength, sendLength);
} else {
//Note: apart from logging an error here, we ignore these errors as they all have to do
//with chunk sequencing, which we do not use, except for the source parameter which is set internally.
console.error("Printer:sendPrintPart: unexpected failure response for API endpoint printer/print (" + data.data.status + ")");
console.error("Printer:sendPrintPart: unexpected failure response for API endpoint printer/print (" +
data.data.status + ", current server seq. info: " + data.data.seq_number + "/" + data.data.seq_total + ")");
//sequence errors should not occur, except perhaps when 'stop' was clicked while still sending (https://github.com/Doodle3D/doodle3d-client/issues/226).
if (self.state != Printer.STOPPING_STATE) {
message.set("Unexpected error sending doodle to printer (" + data.data.status + "), please retry", Message.ERROR, false, true);
@ -250,12 +262,13 @@ function Printer() {
}
}
}).fail(function(jqXHr, textStatus, errorThrown) {
console.log("Printer:sendPrintPart: failed (AJAX status: '" + textStatus + "') AJAX exception (if any):", errorThrown);
console.error("Printer:sendPrintPart: failed (AJAX status: '" + textStatus + "') AJAX exception (if any):", errorThrown);
console.warn("Printer:sendPrintPart: retrying in " + (Printer.DISCONNECTED_RETRY_DELAY / 1000) + " seconds");
clearTimeout(self.retrySendPrintPartDelay);
self.retrySendPrintPartDelay = setTimeout(function() {
console.log("request printer:sendPrintPart failed retry");
console.log("Printer:sendPrintPart: retrying after AJAX failure");
self.sendPrintPart(sendIndex, sendLength)
},self.retryDelay); // retry after delay
}, Printer.DISCONNECTED_RETRY_DELAY);
// after we know the gcode packed has bin received or failed
// (and the driver had time to update the printer.state)