Firefox Version 64.0 about custom-protocol-detection

[matthiassommer]

I got it to work with this function

                if (!iframe) {
                    iframe = _createHiddenIframe(document.body, "about:blank");
                }

                try {
                    iframe.contentWindow.location.href = uri;
                    setTimeout(function () {
                        try {
                            if (iframe.contentWindow.location.protocol === "about:") {
                                successCb();
                            } else {
                                failCb();
                            }
                        } catch (e) {
                            if (e.name === "NS_ERROR_UNKNOWN_PROTOCOL" || e.name === "NS_ERROR_FAILURE" || e.name === "SecurityError") {
                                failCb();
                            }
                        }
                    }, 500);
                } catch (e) {
                    if (e.name === "NS_ERROR_UNKNOWN_PROTOCOL" || e.name === "NS_ERROR_FAILURE" || e.name === "SecurityError") {
                        failCb();
                    }
                }

[w8w8w8]

I using this code ,and it work

`function openUriUsingFirefox(uri, failCb, successCb) {
var iframe = document.querySelector("#hiddenIframe");

if (!iframe) {
    iframe = _createHiddenIframe(document.body, "about:blank");
}

try {
    iframe.contentWindow.location.href = uri;
	
	if(iframe.contentWindow.location.protocol=="about:"){
		successCb();
	}else{
		failCb();
	}
} catch (e) {
	failCb();
    //if (e.name == "NS_ERROR_UNKNOWN_PROTOCOL") {
    //    failCb();
    //}
	//if(e.name=="SecurityError"){
	//	failCb();
	//}
}

}`

[Monkey-Island]

I'm using version 67.0 , and it seems that it does not work.

[agoodcoolman]

I'm using firefox 67.0.4 windows ,it seems that it does not work.

[agoodcoolman]

i'm using w8w8w8 code, it's not perfect,i need twice click using the his code.

i'm using blew code, and it's work for me .i don't know why is it.

function openUriUsingFirefox(uri, failCb, successCb) {
    var iframe = document.querySelector("#hiddenIframe");

    if (!iframe) {
        iframe = _createHiddenIframe(document.body, "about:blank");
    }

    try {
 
            iframe.contentWindow.location.href = uri;
        iframe.contentWindow.onload = function () {
                
            }
            

    } catch (e) {
        failCb();
        if (e.name == "NS_ERROR_UNKNOWN_PROTOCOL") {
            failCb();
        }
    }
}

[ivictbor]

custom-protocol-detection is not working in 68.0.2 (64-bit) Windows 64.
When protocol is not register it fires success callback

[renaatdemuynck]

Detection is not working in 74.0b9 (64-bit) on Windows 10 x64.
It always fires success callback.

[HeimMatthias]

Improved code, works with FF74:

`function openUriUsingFirefox(uri, failCb, successCb) {
var iframe = document.querySelector("#hiddenIframe");

if (!iframe) {
	iframe = _createHiddenIframe(document.body, "about:blank");
}
try {
	iframe.contentWindow.location.href = uri;
	var timeout = setTimeout(function () {
		try {
			if(iframe.contentWindow.location.protocol=="about:"){
				
				successCb();
			}else{

				failCb();
			}
		} catch (e) {
			if (e.name == "NS_ERROR_UNKNOWN_PROTOCOL") {
				failCb();
			}
			if(e.name=="SecurityError"){
				failCb();
			}
		}
	}, 100);
	
} catch (e) {
	if (e.name == "NS_ERROR_UNKNOWN_PROTOCOL") {
		failCb();
	}
	if(e.name=="SecurityError"){
		failCb();
	}
}

}`

The solution is to use a timeout after calling the protocol, as FF will not fire an error when the protocol of the frame is checked straightaway. This is why it required two clicks in the solution above: After the first click, the immediate check did not yet return before Firefox finished calling the protocol's location. With the second click, the location.protocol from the first call is firmly in place and returned the error immediately. The 100ms wait takes this into account.

[git-kks]

i tried using matthiassommer code, but it is not working, win10 and FF98

[Emiya0306]

i tried using matthiassommer code, but it is not working, win10 and FF98

@git-kks I just improve the code from @matthiassommer, it works on mac FF111.0.1.

function openUriUsingFirefox(uri, failCb, successCb) {
    var iframe = document.querySelector("#hiddenIframe");

    if (!iframe) {
        iframe = _createHiddenIframe(document.body, "about:blank");
        iframe.contentWindow.location.href = uri;
    }

    setTimeout(function() {
        try {
            iframe.contentWindow.location.href = uri;
            try {
                if (iframe.contentWindow.location.protocol === "about:") {
                    successCb();
                } else {
                    failCb();
                }
            } catch (e) {
                if (e.name === "NS_ERROR_UNKNOWN_PROTOCOL" || e.name === "NS_ERROR_FAILURE" || e.name === "SecurityError") {
                    failCb();
                }
            }
        } catch (e) {
            if (e.name == "NS_ERROR_UNKNOWN_PROTOCOL") {
                failCb();
            }
        }
    }, 200);
}

[mystery3136]

After checking the box Always open such links in associated apps on the popup the chrome blur methods doesn't work.
Because next time when user checks for custom protocol it automatically opens the app due to which focus is not stolen from the browser and fail call back also gets triggered.
Hidden Iframe method doesn't work with chrome.
Is there a workaround for chrome ? @Emiya0306 @matthiassommer

[mystery3136]

i tried using matthiassommer code, but it is not working, win10 and FF98

@git-kks I just improve the code from @matthiassommer, it works on mac FF111.0.1.

function openUriUsingFirefox(uri, failCb, successCb) {
    var iframe = document.querySelector("#hiddenIframe");

    if (!iframe) {
        iframe = _createHiddenIframe(document.body, "about:blank");
        iframe.contentWindow.location.href = uri;
    }

    setTimeout(function() {
        try {
            iframe.contentWindow.location.href = uri;
            try {
                if (iframe.contentWindow.location.protocol === "about:") {
                    successCb();
                } else {
                    failCb();
                }
            } catch (e) {
                if (e.name === "NS_ERROR_UNKNOWN_PROTOCOL" || e.name === "NS_ERROR_FAILURE" || e.name === "SecurityError") {
                    failCb();
                }
            }
        } catch (e) {
            if (e.name == "NS_ERROR_UNKNOWN_PROTOCOL") {
                failCb();
            }
        }
    }, 200);
}

Can it work with chrome ?