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Add address family specific name resolution to Dns #939

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Add address family specific name resolution to Dns#939
#33420
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scalablecory
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api-approvedAPI was approved in API review, it can be implementedarea-System.Net
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Description

@scalablecory
scalablecory
opened on Oct 22, 2019

Address Family specific name resolution

These APIs would return addresses only within a specified address family. This allows for improved perf if you are only interested in a specific address family, as otherwise DNS requires sending two separate requests for A and AAAA records, and waiting for both to come back before returning.

This is needed to implement RFC 8305 "Happy Eyeballs" in Socket.Connect. Part of Happy Eyeballs is doing IPv4 and IPv6 name resolution in parallel and then coordinating concurrent Connect() calls that may start without waiting for both DNS resolution calls to return. See #861 for more.

Cancellation and ValueTask

This also adds overloads for existing async APIs, with added CancellationToken and returning ValueTask. Brought into this super-issue from dotnet/corefx#40586.

Post review note: ValueTask reverted for usability purposes as OS doesn't support meaningful synchronous completion.

Proposed APIs

classSystem.Net.Dns
{// AddressFamily versions would all just set the ai_family hint in getaddrinfo.// existing: public static IPAddress[] GetHostAddresses(string hostNameOrAddress);publicstaticIPAddress[]GetHostAddresses(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPAddress[]> GetHostAddressesAsync(string hostNameOrAddress);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static IPHostEntry GetHostEntry(string hostNameOrAddress);publicstaticIPHostEntryGetHostEntry(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPHostEntry> GetHostEntryAsync(string hostNameOrAddress);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static Task<IPHostEntry> GetHostEntryAsync(IPAddress address);publicstaticTask<IPHostEntry>GetHostEntryAsync(IPAddressaddress,CancellationTokencancellationToken);}

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Add address family specific name resolution to Dns · Issue #939 · dotnet/runtime · GitHub
    Skip to content
    Add address family specific name resolution to Dns #939
    Closed
    #33420
    Closed
    Add address family specific name resolution to Dns#939
    #33420
    Assignees
    scalablecory
    Labels
    api-approvedAPI was approved in API review, it can be implementedarea-System.Net
    Milestone
    6.0.0
    Description
    @scalablecory
    scalablecory
    opened on Oct 22, 2019
    Address Family specific name resolution
    These APIs would return addresses only within a specified address family. This allows for improved perf if you are only interested in a specific address family, as otherwise DNS requires sending two separate requests for A and AAAA records, and waiting for both to come back before returning.
    This is needed to implement RFC 8305 "Happy Eyeballs" in Socket.Connect. Part of Happy Eyeballs is doing IPv4 and IPv6 name resolution in parallel and then coordinating concurrent Connect() calls that may start without waiting for both DNS resolution calls to return. See #861 for more.
    Cancellation and ValueTask
    This also adds overloads for existing async APIs, with added CancellationToken and returning ValueTask. Brought into this super-issue from dotnet/corefx#40586.
    Post review note: ValueTask reverted for usability purposes as OS doesn't support meaningful synchronous completion.
    Proposed APIs
    classSystem.Net.Dns
{// AddressFamily versions would all just set the ai_family hint in getaddrinfo.// existing: public static IPAddress[] GetHostAddresses(string hostNameOrAddress);publicstaticIPAddress[]GetHostAddresses(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPAddress[]> GetHostAddressesAsync(string hostNameOrAddress);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static IPHostEntry GetHostEntry(string hostNameOrAddress);publicstaticIPHostEntryGetHostEntry(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPHostEntry> GetHostEntryAsync(string hostNameOrAddress);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static Task<IPHostEntry> GetHostEntryAsync(IPAddress address);publicstaticTask<IPHostEntry>GetHostEntryAsync(IPAddressaddress,CancellationTokencancellationToken);}
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Add address family specific name resolution to Dns · Issue #939 · dotnet/runtime · GitHub
      Skip to content
      Add address family specific name resolution to Dns #939
      Closed
      #33420
      Closed
      Add address family specific name resolution to Dns#939
      #33420
      Assignees
      scalablecory
      Labels
      api-approvedAPI was approved in API review, it can be implementedarea-System.Net
      Milestone
      6.0.0
      Description
      @scalablecory
      scalablecory
      opened on Oct 22, 2019
      Address Family specific name resolution
      These APIs would return addresses only within a specified address family. This allows for improved perf if you are only interested in a specific address family, as otherwise DNS requires sending two separate requests for A and AAAA records, and waiting for both to come back before returning.
      This is needed to implement RFC 8305 "Happy Eyeballs" in Socket.Connect. Part of Happy Eyeballs is doing IPv4 and IPv6 name resolution in parallel and then coordinating concurrent Connect() calls that may start without waiting for both DNS resolution calls to return. See #861 for more.
      Cancellation and ValueTask
      This also adds overloads for existing async APIs, with added CancellationToken and returning ValueTask. Brought into this super-issue from dotnet/corefx#40586.
      Post review note: ValueTask reverted for usability purposes as OS doesn't support meaningful synchronous completion.
      Proposed APIs
      classSystem.Net.Dns
{// AddressFamily versions would all just set the ai_family hint in getaddrinfo.// existing: public static IPAddress[] GetHostAddresses(string hostNameOrAddress);publicstaticIPAddress[]GetHostAddresses(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPAddress[]> GetHostAddressesAsync(string hostNameOrAddress);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static IPHostEntry GetHostEntry(string hostNameOrAddress);publicstaticIPHostEntryGetHostEntry(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPHostEntry> GetHostEntryAsync(string hostNameOrAddress);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static Task<IPHostEntry> GetHostEntryAsync(IPAddress address);publicstaticTask<IPHostEntry>GetHostEntryAsync(IPAddressaddress,CancellationTokencancellationToken);}
      Metadata
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      Type
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        No branches or pull requests
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Add address family specific name resolution to Dns · Issue #939 · dotnet/runtime · GitHub
        Skip to content
        Add address family specific name resolution to Dns #939
        Closed
        #33420
        Closed
        Add address family specific name resolution to Dns#939
        #33420
        Assignees
        scalablecory
        Labels
        api-approvedAPI was approved in API review, it can be implementedarea-System.Net
        Milestone
        6.0.0
        Description
        @scalablecory
        scalablecory
        opened on Oct 22, 2019
        Address Family specific name resolution
        These APIs would return addresses only within a specified address family. This allows for improved perf if you are only interested in a specific address family, as otherwise DNS requires sending two separate requests for A and AAAA records, and waiting for both to come back before returning.
        This is needed to implement RFC 8305 "Happy Eyeballs" in Socket.Connect. Part of Happy Eyeballs is doing IPv4 and IPv6 name resolution in parallel and then coordinating concurrent Connect() calls that may start without waiting for both DNS resolution calls to return. See #861 for more.
        Cancellation and ValueTask
        This also adds overloads for existing async APIs, with added CancellationToken and returning ValueTask. Brought into this super-issue from dotnet/corefx#40586.
        Post review note: ValueTask reverted for usability purposes as OS doesn't support meaningful synchronous completion.
        Proposed APIs
        classSystem.Net.Dns
{// AddressFamily versions would all just set the ai_family hint in getaddrinfo.// existing: public static IPAddress[] GetHostAddresses(string hostNameOrAddress);publicstaticIPAddress[]GetHostAddresses(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPAddress[]> GetHostAddressesAsync(string hostNameOrAddress);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static IPHostEntry GetHostEntry(string hostNameOrAddress);publicstaticIPHostEntryGetHostEntry(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPHostEntry> GetHostEntryAsync(string hostNameOrAddress);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static Task<IPHostEntry> GetHostEntryAsync(IPAddress address);publicstaticTask<IPHostEntry>GetHostEntryAsync(IPAddressaddress,CancellationTokencancellationToken);}
        Metadata
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        Type
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, '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',
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(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Add address family specific name resolution to Dns · Issue #939 · dotnet/runtime · GitHub
          Skip to content
          Add address family specific name resolution to Dns #939
          Closed
          #33420
          Closed
          Add address family specific name resolution to Dns#939
          #33420
          Assignees
          scalablecory
          Labels
          api-approvedAPI was approved in API review, it can be implementedarea-System.Net
          Milestone
          6.0.0
          Description
          @scalablecory
          scalablecory
          opened on Oct 22, 2019
          Address Family specific name resolution
          These APIs would return addresses only within a specified address family. This allows for improved perf if you are only interested in a specific address family, as otherwise DNS requires sending two separate requests for A and AAAA records, and waiting for both to come back before returning.
          This is needed to implement RFC 8305 "Happy Eyeballs" in Socket.Connect. Part of Happy Eyeballs is doing IPv4 and IPv6 name resolution in parallel and then coordinating concurrent Connect() calls that may start without waiting for both DNS resolution calls to return. See #861 for more.
          Cancellation and ValueTask
          This also adds overloads for existing async APIs, with added CancellationToken and returning ValueTask. Brought into this super-issue from dotnet/corefx#40586.
          Post review note: ValueTask reverted for usability purposes as OS doesn't support meaningful synchronous completion.
          Proposed APIs
          classSystem.Net.Dns
{// AddressFamily versions would all just set the ai_family hint in getaddrinfo.// existing: public static IPAddress[] GetHostAddresses(string hostNameOrAddress);publicstaticIPAddress[]GetHostAddresses(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPAddress[]> GetHostAddressesAsync(string hostNameOrAddress);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static IPHostEntry GetHostEntry(string hostNameOrAddress);publicstaticIPHostEntryGetHostEntry(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPHostEntry> GetHostEntryAsync(string hostNameOrAddress);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static Task<IPHostEntry> GetHostEntryAsync(IPAddress address);publicstaticTask<IPHostEntry>GetHostEntryAsync(IPAddressaddress,CancellationTokencancellationToken);}
          Metadata
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          Type
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, '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"]');
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lastUrl = location.href;
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})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Add address family specific name resolution to Dns · Issue #939 · dotnet/runtime · GitHub
            Skip to content
            Add address family specific name resolution to Dns #939
            Closed
            #33420
            Closed
            Add address family specific name resolution to Dns#939
            #33420
            Assignees
            scalablecory
            Labels
            api-approvedAPI was approved in API review, it can be implementedarea-System.Net
            Milestone
            6.0.0
            Description
            @scalablecory
            scalablecory
            opened on Oct 22, 2019
            Address Family specific name resolution
            These APIs would return addresses only within a specified address family. This allows for improved perf if you are only interested in a specific address family, as otherwise DNS requires sending two separate requests for A and AAAA records, and waiting for both to come back before returning.
            This is needed to implement RFC 8305 "Happy Eyeballs" in Socket.Connect. Part of Happy Eyeballs is doing IPv4 and IPv6 name resolution in parallel and then coordinating concurrent Connect() calls that may start without waiting for both DNS resolution calls to return. See #861 for more.
            Cancellation and ValueTask
            This also adds overloads for existing async APIs, with added CancellationToken and returning ValueTask. Brought into this super-issue from dotnet/corefx#40586.
            Post review note: ValueTask reverted for usability purposes as OS doesn't support meaningful synchronous completion.
            Proposed APIs
            classSystem.Net.Dns
{// AddressFamily versions would all just set the ai_family hint in getaddrinfo.// existing: public static IPAddress[] GetHostAddresses(string hostNameOrAddress);publicstaticIPAddress[]GetHostAddresses(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPAddress[]> GetHostAddressesAsync(string hostNameOrAddress);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static IPHostEntry GetHostEntry(string hostNameOrAddress);publicstaticIPHostEntryGetHostEntry(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPHostEntry> GetHostEntryAsync(string hostNameOrAddress);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static Task<IPHostEntry> GetHostEntryAsync(IPAddress address);publicstaticTask<IPHostEntry>GetHostEntryAsync(IPAddressaddress,CancellationTokencancellationToken);}
            Metadata
            Metadata
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            Labels
            api-approvedAPI was approved in API review, it can be implementedarea-System.Net
            Type
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            No projects
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, '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';
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});
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var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
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})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Add address family specific name resolution to Dns · Issue #939 · dotnet/runtime · GitHub
              Skip to content
              Add address family specific name resolution to Dns #939
              Closed
              #33420
              Closed
              Add address family specific name resolution to Dns#939
              #33420
              Assignees
              scalablecory
              Labels
              api-approvedAPI was approved in API review, it can be implementedarea-System.Net
              Milestone
              6.0.0
              Description
              @scalablecory
              scalablecory
              opened on Oct 22, 2019
              Address Family specific name resolution
              These APIs would return addresses only within a specified address family. This allows for improved perf if you are only interested in a specific address family, as otherwise DNS requires sending two separate requests for A and AAAA records, and waiting for both to come back before returning.
              This is needed to implement RFC 8305 "Happy Eyeballs" in Socket.Connect. Part of Happy Eyeballs is doing IPv4 and IPv6 name resolution in parallel and then coordinating concurrent Connect() calls that may start without waiting for both DNS resolution calls to return. See #861 for more.
              Cancellation and ValueTask
              This also adds overloads for existing async APIs, with added CancellationToken and returning ValueTask. Brought into this super-issue from dotnet/corefx#40586.
              Post review note: ValueTask reverted for usability purposes as OS doesn't support meaningful synchronous completion.
              Proposed APIs
              classSystem.Net.Dns
{// AddressFamily versions would all just set the ai_family hint in getaddrinfo.// existing: public static IPAddress[] GetHostAddresses(string hostNameOrAddress);publicstaticIPAddress[]GetHostAddresses(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPAddress[]> GetHostAddressesAsync(string hostNameOrAddress);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static IPHostEntry GetHostEntry(string hostNameOrAddress);publicstaticIPHostEntryGetHostEntry(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPHostEntry> GetHostEntryAsync(string hostNameOrAddress);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static Task<IPHostEntry> GetHostEntryAsync(IPAddress address);publicstaticTask<IPHostEntry>GetHostEntryAsync(IPAddressaddress,CancellationTokencancellationToken);}
              Metadata
              Metadata
              Assignees
              Labels
              api-approvedAPI was approved in API review, it can be implementedarea-System.Net
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
Add address family specific name resolution to Dns · Issue #939 · dotnet/runtime · GitHub
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                Add address family specific name resolution to Dns #939
                Closed
                #33420
                Closed
                Add address family specific name resolution to Dns#939
                #33420
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                scalablecory
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                api-approvedAPI was approved in API review, it can be implementedarea-System.Net
                Milestone
                6.0.0
                Description
                @scalablecory
                scalablecory
                opened on Oct 22, 2019
                Address Family specific name resolution
                These APIs would return addresses only within a specified address family. This allows for improved perf if you are only interested in a specific address family, as otherwise DNS requires sending two separate requests for A and AAAA records, and waiting for both to come back before returning.
                This is needed to implement RFC 8305 "Happy Eyeballs" in Socket.Connect. Part of Happy Eyeballs is doing IPv4 and IPv6 name resolution in parallel and then coordinating concurrent Connect() calls that may start without waiting for both DNS resolution calls to return. See #861 for more.
                Cancellation and ValueTask
                This also adds overloads for existing async APIs, with added CancellationToken and returning ValueTask. Brought into this super-issue from dotnet/corefx#40586.
                Post review note: ValueTask reverted for usability purposes as OS doesn't support meaningful synchronous completion.
                Proposed APIs
                classSystem.Net.Dns
{// AddressFamily versions would all just set the ai_family hint in getaddrinfo.// existing: public static IPAddress[] GetHostAddresses(string hostNameOrAddress);publicstaticIPAddress[]GetHostAddresses(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPAddress[]> GetHostAddressesAsync(string hostNameOrAddress);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPAddress[]>GetHostAddressesAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static IPHostEntry GetHostEntry(string hostNameOrAddress);publicstaticIPHostEntryGetHostEntry(stringhostNameOrAddress,AddressFamilyfamily);// existing: public static Task<IPHostEntry> GetHostEntryAsync(string hostNameOrAddress);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,CancellationTokencancellationToken);publicstaticTask<IPHostEntry>GetHostEntryAsync(stringhostNameOrAddress,AddressFamilyfamily,CancellationTokencancellationToken=default);// existing: public static Task<IPHostEntry> GetHostEntryAsync(IPAddress address);publicstaticTask<IPHostEntry>GetHostEntryAsync(IPAddressaddress,CancellationTokencancellationToken);}
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