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PayPal IPN Code Samples

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This repository contains samples in multiple languages for validating PayPal IPN messages.

Please Note

The Payment Card Industry (PCI) Council has mandated that early versions of TLS be retired from service. All organizations that handle credit card information are required to comply with this standard. As part of this obligation, PayPal is updating its services to require TLS 1.2 for all HTTPS connections. At this time, PayPal will also require HTTP/1.1 for all connections. Click here for more information

IPN Overview

  • PayPal Instant Payment Notification is a call back system that will get initiated once a transaction is completed (e.g. when an express checkout completed successfully).
  • You will receive the transaction-related IPN variables on your IPN url that you have specified in your request, otherwise it will default to the IPN url set in your PayPal account.
  • You must send these IPN variables back to PayPal servers for verification. Upon verification, PayPal will send a response string with "VERIFIED" or "INVALID".
  • If your server fails to respond with a successful HTTP response (200), PayPal will resend this IPN either until a success is received or up to 16 times.
  • If your server consistently fails to respond, your IPN may be disabled, in which case you will receive an notification on your primary paypal email address.

How to run these samples

  • IPN Listener script samples are provided for different languages.
  • Deploy IPN Listener script in a cloud environment or you can expose your server port using any third party local tunneling software, so that you can receive PayPal IPN callback.
  • You can test your software using the PayPal IPN Simulator. Ensure your listener is validating the sandbox messages at the correct testing endpoint.

License

Read License for more licensing information.

Contributing

Read here for more information.

More help

About

No description, website, or topics provided.

Resources

Readme
License

Contributing

Contributing
Activity

Stars

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Watchers

1 watching

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
GitHub - elsonsolano/ipn-code-samples · GitHub
Skip to content
BranchesTags
Repository files navigation
PayPal IPN Code Samples
Home Image
This repository contains samples in multiple languages for validating PayPal IPN messages.
Please Note
The Payment Card Industry (PCI) Council has mandated that early versions of TLS be retired from service. All organizations that handle credit card information are required to comply with this standard. As part of this obligation, PayPal is updating its services to require TLS 1.2 for all HTTPS connections. At this time, PayPal will also require HTTP/1.1 for all connections. Click here for more information
IPN Overview
  • PayPal Instant Payment Notification is a call back system that will get initiated once a transaction is completed (e.g. when an express checkout completed successfully).
  • You will receive the transaction-related IPN variables on your IPN url that you have specified in your request, otherwise it will default to the IPN url set in your PayPal account.
  • You must send these IPN variables back to PayPal servers for verification. Upon verification, PayPal will send
a response string with "VERIFIED" or "INVALID".
  • If your server fails to respond with a successful HTTP response (200), PayPal will resend this IPN either until a success is received or up to 16 times.
  • If your server consistently fails to respond, your IPN may be disabled, in which case you will receive an notification on your primary paypal email address.
How to run these samples
  • IPN Listener script samples are provided for different languages.
  • Deploy IPN Listener script in a cloud environment or you can expose your server port using any third party local tunneling software, so that you can receive PayPal IPN callback.
  • You can test your software using the PayPal IPN Simulator. Ensure your listener is validating the sandbox messages at the correct testing endpoint.
License
Read License for more licensing information.
Contributing
Read here for more information.
More help
About
No description, website, or topics provided.
Resources
Readme
License
Contributing
Contributing
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - elsonsolano/ipn-code-samples · GitHub
Skip to content
BranchesTags
Repository files navigation
PayPal IPN Code Samples
Home Image
This repository contains samples in multiple languages for validating PayPal IPN messages.
Please Note
The Payment Card Industry (PCI) Council has mandated that early versions of TLS be retired from service. All organizations that handle credit card information are required to comply with this standard. As part of this obligation, PayPal is updating its services to require TLS 1.2 for all HTTPS connections. At this time, PayPal will also require HTTP/1.1 for all connections. Click here for more information
IPN Overview
  • PayPal Instant Payment Notification is a call back system that will get initiated once a transaction is completed (e.g. when an express checkout completed successfully).
  • You will receive the transaction-related IPN variables on your IPN url that you have specified in your request, otherwise it will default to the IPN url set in your PayPal account.
  • You must send these IPN variables back to PayPal servers for verification. Upon verification, PayPal will send
a response string with "VERIFIED" or "INVALID".
  • If your server fails to respond with a successful HTTP response (200), PayPal will resend this IPN either until a success is received or up to 16 times.
  • If your server consistently fails to respond, your IPN may be disabled, in which case you will receive an notification on your primary paypal email address.
How to run these samples
  • IPN Listener script samples are provided for different languages.
  • Deploy IPN Listener script in a cloud environment or you can expose your server port using any third party local tunneling software, so that you can receive PayPal IPN callback.
  • You can test your software using the PayPal IPN Simulator. Ensure your listener is validating the sandbox messages at the correct testing endpoint.
License
Read License for more licensing information.
Contributing
Read here for more information.
More help
About
No description, website, or topics provided.
Resources
Readme
License
Contributing
Contributing
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - elsonsolano/ipn-code-samples · GitHub
Skip to content
BranchesTags
Repository files navigation
PayPal IPN Code Samples
Home Image
This repository contains samples in multiple languages for validating PayPal IPN messages.
Please Note
The Payment Card Industry (PCI) Council has mandated that early versions of TLS be retired from service. All organizations that handle credit card information are required to comply with this standard. As part of this obligation, PayPal is updating its services to require TLS 1.2 for all HTTPS connections. At this time, PayPal will also require HTTP/1.1 for all connections. Click here for more information
IPN Overview
  • PayPal Instant Payment Notification is a call back system that will get initiated once a transaction is completed (e.g. when an express checkout completed successfully).
  • You will receive the transaction-related IPN variables on your IPN url that you have specified in your request, otherwise it will default to the IPN url set in your PayPal account.
  • You must send these IPN variables back to PayPal servers for verification. Upon verification, PayPal will send
a response string with "VERIFIED" or "INVALID".
  • If your server fails to respond with a successful HTTP response (200), PayPal will resend this IPN either until a success is received or up to 16 times.
  • If your server consistently fails to respond, your IPN may be disabled, in which case you will receive an notification on your primary paypal email address.
How to run these samples
  • IPN Listener script samples are provided for different languages.
  • Deploy IPN Listener script in a cloud environment or you can expose your server port using any third party local tunneling software, so that you can receive PayPal IPN callback.
  • You can test your software using the PayPal IPN Simulator. Ensure your listener is validating the sandbox messages at the correct testing endpoint.
License
Read License for more licensing information.
Contributing
Read here for more information.
More help
About
No description, website, or topics provided.
Resources
Readme
License
Contributing
Contributing
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
GitHub - elsonsolano/ipn-code-samples · GitHub
Skip to content
BranchesTags
Repository files navigation
PayPal IPN Code Samples
Home Image
This repository contains samples in multiple languages for validating PayPal IPN messages.
Please Note
The Payment Card Industry (PCI) Council has mandated that early versions of TLS be retired from service. All organizations that handle credit card information are required to comply with this standard. As part of this obligation, PayPal is updating its services to require TLS 1.2 for all HTTPS connections. At this time, PayPal will also require HTTP/1.1 for all connections. Click here for more information
IPN Overview
  • PayPal Instant Payment Notification is a call back system that will get initiated once a transaction is completed (e.g. when an express checkout completed successfully).
  • You will receive the transaction-related IPN variables on your IPN url that you have specified in your request, otherwise it will default to the IPN url set in your PayPal account.
  • You must send these IPN variables back to PayPal servers for verification. Upon verification, PayPal will send
a response string with "VERIFIED" or "INVALID".
  • If your server fails to respond with a successful HTTP response (200), PayPal will resend this IPN either until a success is received or up to 16 times.
  • If your server consistently fails to respond, your IPN may be disabled, in which case you will receive an notification on your primary paypal email address.
How to run these samples
  • IPN Listener script samples are provided for different languages.
  • Deploy IPN Listener script in a cloud environment or you can expose your server port using any third party local tunneling software, so that you can receive PayPal IPN callback.
  • You can test your software using the PayPal IPN Simulator. Ensure your listener is validating the sandbox messages at the correct testing endpoint.
License
Read License for more licensing information.
Contributing
Read here for more information.
More help
About
No description, website, or topics provided.
Resources
Readme
License
Contributing
Contributing
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - elsonsolano/ipn-code-samples · GitHub
Skip to content
BranchesTags
Repository files navigation
PayPal IPN Code Samples
Home Image
This repository contains samples in multiple languages for validating PayPal IPN messages.
Please Note
The Payment Card Industry (PCI) Council has mandated that early versions of TLS be retired from service. All organizations that handle credit card information are required to comply with this standard. As part of this obligation, PayPal is updating its services to require TLS 1.2 for all HTTPS connections. At this time, PayPal will also require HTTP/1.1 for all connections. Click here for more information
IPN Overview
  • PayPal Instant Payment Notification is a call back system that will get initiated once a transaction is completed (e.g. when an express checkout completed successfully).
  • You will receive the transaction-related IPN variables on your IPN url that you have specified in your request, otherwise it will default to the IPN url set in your PayPal account.
  • You must send these IPN variables back to PayPal servers for verification. Upon verification, PayPal will send
a response string with "VERIFIED" or "INVALID".
  • If your server fails to respond with a successful HTTP response (200), PayPal will resend this IPN either until a success is received or up to 16 times.
  • If your server consistently fails to respond, your IPN may be disabled, in which case you will receive an notification on your primary paypal email address.
How to run these samples
  • IPN Listener script samples are provided for different languages.
  • Deploy IPN Listener script in a cloud environment or you can expose your server port using any third party local tunneling software, so that you can receive PayPal IPN callback.
  • You can test your software using the PayPal IPN Simulator. Ensure your listener is validating the sandbox messages at the correct testing endpoint.
License
Read License for more licensing information.
Contributing
Read here for more information.
More help
About
No description, website, or topics provided.
Resources
Readme
License
Contributing
Contributing
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
})();
GitHub - elsonsolano/ipn-code-samples · GitHub
Skip to content
BranchesTags
Repository files navigation
PayPal IPN Code Samples
Home Image
This repository contains samples in multiple languages for validating PayPal IPN messages.
Please Note
The Payment Card Industry (PCI) Council has mandated that early versions of TLS be retired from service. All organizations that handle credit card information are required to comply with this standard. As part of this obligation, PayPal is updating its services to require TLS 1.2 for all HTTPS connections. At this time, PayPal will also require HTTP/1.1 for all connections. Click here for more information
IPN Overview
  • PayPal Instant Payment Notification is a call back system that will get initiated once a transaction is completed (e.g. when an express checkout completed successfully).
  • You will receive the transaction-related IPN variables on your IPN url that you have specified in your request, otherwise it will default to the IPN url set in your PayPal account.
  • You must send these IPN variables back to PayPal servers for verification. Upon verification, PayPal will send
a response string with "VERIFIED" or "INVALID".
  • If your server fails to respond with a successful HTTP response (200), PayPal will resend this IPN either until a success is received or up to 16 times.
  • If your server consistently fails to respond, your IPN may be disabled, in which case you will receive an notification on your primary paypal email address.
How to run these samples
  • IPN Listener script samples are provided for different languages.
  • Deploy IPN Listener script in a cloud environment or you can expose your server port using any third party local tunneling software, so that you can receive PayPal IPN callback.
  • You can test your software using the PayPal IPN Simulator. Ensure your listener is validating the sandbox messages at the correct testing endpoint.
License
Read License for more licensing information.
Contributing
Read here for more information.
More help
About
No description, website, or topics provided.
Resources
Readme
License
Contributing
Contributing
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages