QNetworkRequest Class | Qt Network | Qt 6.11.1
Description: The QNetworkRequest class holds a request to be sent with QNetworkAccessManager.

- Qt 6.11
- Qt Network
- C++ Classes
- QNetworkRequest
- Qt 6.11.1 Reference Documentation

# QNetworkRequest Class

The QNetworkRequest class holds a request to be sent with QNetworkAccessManager. More...

Header: | `#include <QNetworkRequest>`
CMake: | `find_package(Qt6 REQUIRED COMPONENTS Network)` `target_link_libraries(mytarget PRIVATE Qt6::Network)`
qmake: | `QT += network`

- List of all members, including inherited members
- QNetworkRequest is part of Network Programming API and Implicitly Shared Classes.

## Public Types

enum | Attribute { HttpStatusCodeAttribute, HttpReasonPhraseAttribute, RedirectionTargetAttribute, ConnectionEncryptedAttribute, CacheLoadControlAttribute, …, UserMax }
enum | CacheLoadControl { AlwaysNetwork, PreferNetwork, PreferCache, AlwaysCache }
enum | KnownHeaders { ContentDispositionHeader, ContentTypeHeader, ContentLengthHeader, LocationHeader, LastModifiedHeader, …, ServerHeader }
enum | LoadControl { Automatic, Manual }
enum | Priority { HighPriority, NormalPriority, LowPriority }
enum | RedirectPolicy { ManualRedirectPolicy, NoLessSafeRedirectPolicy, SameOriginRedirectPolicy, UserVerifiedRedirectPolicy }
enum | TransferTimeoutConstant { DefaultTransferTimeoutConstant }

## Public Functions

| QNetworkRequest()
| QNetworkRequest(const QUrl &url)
| QNetworkRequest(const QNetworkRequest &other)
| ~QNetworkRequest()
QVariant | attribute(QNetworkRequest::Attribute code, const QVariant &defaultValue = QVariant()) const
`(since 6.2)` qint64 | decompressedSafetyCheckThreshold() const
bool | hasRawHeader(QAnyStringView headerName) const
QVariant | header(QNetworkRequest::KnownHeaders header) const
`(since 6.8)` QHttpHeaders | headers() const
`(since 6.5)` QHttp1Configuration | http1Configuration() const
QHttp2Configuration | http2Configuration() const
int | maximumRedirectsAllowed() const
QObject * | originatingObject() const
QString | peerVerifyName() const
QNetworkRequest::Priority | priority() const
QByteArray | rawHeader(QAnyStringView headerName) const
QList<QByteArray> | rawHeaderList() const
void | setAttribute(QNetworkRequest::Attribute code, const QVariant &value)
`(since 6.2)` void | setDecompressedSafetyCheckThreshold(qint64 threshold)
void | setHeader(QNetworkRequest::KnownHeaders header, const QVariant &value)
`(since 6.8)` void | setHeaders(QHttpHeaders &&newHeaders)
`(since 6.8)` void | setHeaders(const QHttpHeaders &newHeaders)
`(since 6.5)` void | setHttp1Configuration(const QHttp1Configuration &configuration)
void | setHttp2Configuration(const QHttp2Configuration &configuration)
void | setMaximumRedirectsAllowed(int maxRedirectsAllowed)
void | setOriginatingObject(QObject *object)
void | setPeerVerifyName(const QString &peerName)
void | setPriority(QNetworkRequest::Priority priority)
void | setRawHeader(const QByteArray &headerName, const QByteArray &headerValue)
void | setSslConfiguration(const QSslConfiguration &config)
`(since 6.11)` void | setTcpKeepAliveIdleTimeBeforeProbes(std::chrono::seconds idle)
`(since 6.11)` void | setTcpKeepAliveIntervalBetweenProbes(std::chrono::seconds interval)
`(since 6.11)` void | setTcpKeepAliveProbeCount(int probes)
void | setTransferTimeout(int timeout)
`(since 6.7)` void | setTransferTimeout(std::chrono::milliseconds duration = DefaultTransferTimeout)
void | setUrl(const QUrl &url)
QSslConfiguration | sslConfiguration() const
void | swap(QNetworkRequest &other)
`(since 6.11)` std::chrono::seconds | tcpKeepAliveIdleTimeBeforeProbes() const
`(since 6.11)` std::chrono::seconds | tcpKeepAliveIntervalBetweenProbes() const
`(since 6.11)` int | tcpKeepAliveProbeCount() const
int | transferTimeout() const
`(since 6.7)` std::chrono::milliseconds | transferTimeoutAsDuration() const
QUrl | url() const
bool | operator!=(const QNetworkRequest &other) const
QNetworkRequest & | operator=(const QNetworkRequest &other)
bool | operator==(const QNetworkRequest &other) const

## Static Public Members

const std::chrono::std::chrono::milliseconds | DefaultTransferTimeout

## Detailed Description

QNetworkRequest is part of the Network Access API and is the class holding the information necessary to send a request over the network. It contains a URL and some ancillary information that can be used to modify the request.

See also QNetworkReply and QNetworkAccessManager.

## Member Type Documentation

### enum QNetworkRequest::Attribute

Attribute codes for the QNetworkRequest and QNetworkReply.

Attributes are extra meta-data that are used to control the behavior of the request and to pass further information from the reply back to the application. Attributes are also extensible, allowing custom implementations to pass custom values.

The following table explains what the default attribute codes are, the QVariant types associated, the default value if said attribute is missing and whether it's used in requests or replies.

Constant | Value | Description
--- | --- | ---
`QNetworkRequest::HttpStatusCodeAttribute` | `0` | Replies only, type: QMetaType::Int (no default) Indicates the HTTP status code received from the HTTP server (like 200, 304, 404, 401, etc.). If the connection was not HTTP-based, this attribute will not be present.
`QNetworkRequest::HttpReasonPhraseAttribute` | `1` | Replies only, type: QMetaType::QByteArray (no default) Indicates the HTTP reason phrase as received from the HTTP server (like "Ok", "Found", "Not Found", "Access Denied", etc.) This is the human-readable representation of the status code (see above). If the connection was not HTTP-based, this attribute will not be present. Note: The reason phrase is not used when using HTTP/2.
`QNetworkRequest::RedirectionTargetAttribute` | `2` | Replies only, type: QMetaType::QUrl (no default) If present, it indicates that the server is redirecting the request to a different URL. The Network Access API does follow redirections by default, unless QNetworkRequest::ManualRedirectPolicy is used. Additionally, if QNetworkRequest::UserVerifiedRedirectPolicy is used, then this attribute will be set if the redirect was not followed. The returned URL might be relative. Use QUrl::resolved() to create an absolute URL out of it.
`QNetworkRequest::ConnectionEncryptedAttribute` | `3` | Replies only, type: QMetaType::Bool (default: false) Indicates whether the data was obtained through an encrypted (secure) connection.
`QNetworkRequest::CacheLoadControlAttribute` | `4` | Requests only, type: QMetaType::Int (default: QNetworkRequest::PreferNetwork) Controls how the cache should be accessed. The possible values are those of QNetworkRequest::CacheLoadControl. Note that the default QNetworkAccessManager implementation does not support caching. However, this attribute may be used by certain backends to modify their requests (for example, for caching proxies).
`QNetworkRequest::CacheSaveControlAttribute` | `5` | Requests only, type: QMetaType::Bool (default: true) Controls if the data obtained should be saved to cache for future uses. If the value is false, the data obtained will not be automatically cached. If true, data may be cached, provided it is cacheable (what is cacheable depends on the protocol being used).
`QNetworkRequest::SourceIsFromCacheAttribute` | `6` | Replies only, type: QMetaType::Bool (default: false) Indicates whether the data was obtained from cache or not.
`QNetworkRequest::DoNotBufferUploadDataAttribute` | `7` | Requests only, type: QMetaType::Bool (default: false) Indicates whether the QNetworkAccessManager code is allowed to buffer the upload data, e.g. when doing a HTTP POST. When using this flag with sequential upload data, the ContentLengthHeader header must be set.
`QNetworkRequest::HttpPipeliningAllowedAttribute` | `8` | Requests only, type: QMetaType::Bool (default: false) Indicates whether the QNetworkAccessManager code is allowed to use HTTP pipelining with this request.
`QNetworkRequest::HttpPipeliningWasUsedAttribute` | `9` | Replies only, type: QMetaType::Bool Indicates whether the HTTP pipelining was used for receiving this reply.
`QNetworkRequest::CustomVerbAttribute` | `10` | Requests only, type: QMetaType::QByteArray Holds the value for the custom HTTP verb to send (destined for usage of other verbs than GET, POST, PUT and DELETE). This verb is set when calling QNetworkAccessManager::sendCustomRequest().
`QNetworkRequest::CookieLoadControlAttribute` | `11` | Requests only, type: QMetaType::Int (default: QNetworkRequest::Automatic) Indicates whether to send 'Cookie' headers in the request. This attribute is set to false by Qt WebKit when creating a cross-origin XMLHttpRequest where withCredentials has not been set explicitly to true by the Javascript that created the request. See here for more information. (This value was introduced in 4.7.)
`QNetworkRequest::CookieSaveControlAttribute` | `13` | Requests only, type: QMetaType::Int (default: QNetworkRequest::Automatic) Indicates whether to save 'Cookie' headers received from the server in reply to the request. This attribute is set to false by Qt WebKit when creating a cross-origin XMLHttpRequest where withCredentials has not been set explicitly to true by the Javascript that created the request. See here for more information. (This value was introduced in 4.7.)
`QNetworkRequest::AuthenticationReuseAttribute` | `12` | Requests only, type: QMetaType::Int (default: QNetworkRequest::Automatic) Indicates whether to use cached authorization credentials in the request, if available. If this is set to QNetworkRequest::Manual and the authentication mechanism is 'Basic' or 'Digest', Qt will not send an 'Authorization' HTTP header with any cached credentials it may have for the request's URL. This attribute is set to QNetworkRequest::Manual by Qt WebKit when creating a cross-origin XMLHttpRequest where withCredentials has not been set explicitly to true by the Javascript that created the request. See here for more information. (This value was introduced in 4.7.)
`QNetworkRequest::BackgroundRequestAttribute` | `17` | Type: QMetaType::Bool (default: false) Indicates that this is a background transfer, rather than a user initiated transfer. Depending on the platform, background transfers may be subject to different policies.
`QNetworkRequest::Http2AllowedAttribute` | `19` | Requests only, type: QMetaType::Bool (default: true) Indicates whether the QNetworkAccessManager code is allowed to use HTTP/2 with this request. This applies to SSL requests or 'cleartext' HTTP/2 if Http2CleartextAllowedAttribute is set.
`QNetworkRequest::Http2WasUsedAttribute` | `20` | Replies only, type: QMetaType::Bool (default: false) Indicates whether HTTP/2 was used for receiving this reply. (This value was introduced in 5.9.)
`QNetworkRequest::EmitAllUploadProgressSignalsAttribute` | `18` | Requests only, type: QMetaType::Bool (default: false) Indicates whether all upload signals should be emitted. By default, the uploadProgress signal is emitted only in 100 millisecond intervals. (This value was introduced in 5.5.)
`QNetworkRequest::OriginalContentLengthAttribute` | `21` | Replies only, type QMetaType::Int Holds the original content-length attribute before being invalidated and removed from the header when the data is compressed and the request was marked to be decompressed automatically. (This value was introduced in 5.9.)
`QNetworkRequest::RedirectPolicyAttribute` | `22` | Requests only, type: QMetaType::Int, should be one of the QNetworkRequest::RedirectPolicy values (default: NoLessSafeRedirectPolicy). (This value was introduced in 5.9.)
`QNetworkRequest::Http2DirectAttribute` | `23` | Requests only, type: QMetaType::Bool (default: false) If set, this attribute will force QNetworkAccessManager to use HTTP/2 protocol without initial HTTP/2 protocol negotiation. Use of this attribute implies prior knowledge that a particular server supports HTTP/2. The attribute works with SSL or with 'cleartext' HTTP/2 if Http2CleartextAllowedAttribute is set. If a server turns out to not support HTTP/2, when HTTP/2 direct was specified, QNetworkAccessManager gives up, without attempting to fall back to HTTP/1.1. If both Http2AllowedAttribute and Http2DirectAttribute are set, Http2DirectAttribute takes priority. (This value was introduced in 5.11.)
`QNetworkRequest::AutoDeleteReplyOnFinishAttribute` | `25` | Requests only, type: QMetaType::Bool (default: false) If set, this attribute will make QNetworkAccessManager delete the QNetworkReply after having emitted "finished". (This value was introduced in 5.14.)
`QNetworkRequest::ConnectionCacheExpiryTimeoutSecondsAttribute` | `26` | Requests only, type: QMetaType::Int To set when the TCP connections to a server (HTTP1 and HTTP2) should be closed after the last pending request had been processed. (This value was introduced in 6.3.)
`QNetworkRequest::Http2CleartextAllowedAttribute` | `27` | Requests only, type: QMetaType::Bool (default: false) If set, this attribute will tell QNetworkAccessManager to attempt an upgrade to HTTP/2 over cleartext (also known as h2c). Until Qt 7 the default value for this attribute can be overridden to true by setting the QT_NETWORK_H2C_ALLOWED environment variable. This attribute is ignored if the Http2AllowedAttribute is not set. (This value was introduced in 6.3.)
`QNetworkRequest::UseCredentialsAttribute` | `28` | Requests only, type: QMetaType::Bool (default: false) Indicates if the underlying XMLHttpRequest cross-site Access-Control requests should be made using credentials. Has no effect on same-origin requests. This only affects the WebAssembly platform. (This value was introduced in 6.5.)
`QNetworkRequest::FullLocalServerNameAttribute` | `29` | Requests only, type: QMetaType::String Holds the full local server name to be used for the underlying QLocalSocket. This attribute is used by the QNetworkAccessManager to connect to a specific local server, when QLocalSocket's behavior for a simple name isn't enough. The URL in the QNetworkRequest must still use unix+http: or local+http: scheme. And the hostname in the URL will be used for the Host header in the HTTP request. (This value was introduced in 6.8.)
`QNetworkRequest::User` | `1000` | Special type. Additional information can be passed in QVariants with types ranging from User to UserMax. The default implementation of Network Access will ignore any request attributes in this range and it will not produce any attributes in this range in replies. The range is reserved for extensions of QNetworkAccessManager.
`QNetworkRequest::UserMax` | `32767` | Special type. See User.

### enum QNetworkRequest::CacheLoadControl

Controls the caching mechanism of QNetworkAccessManager.

Constant | Value | Description
--- | --- | ---
`QNetworkRequest::AlwaysNetwork` | `0` | always load from network and do not check if the cache has a valid entry (similar to the "Reload" feature in browsers); in addition, force intermediate caches to re-validate.
`QNetworkRequest::PreferNetwork` | `1` | default value; load from the network if the cached entry is older than the network entry. This will never return stale data from the cache, but revalidate resources that have become stale.
`QNetworkRequest::PreferCache` | `2` | load from cache if available, otherwise load from network. Note that this can return possibly stale (but not expired) items from cache.
`QNetworkRequest::AlwaysCache` | `3` | only load from cache, indicating error if the item was not cached (i.e., off-line mode)

### enum QNetworkRequest::KnownHeaders

List of known header types that QNetworkRequest parses. Each known header is also represented in raw form with its full HTTP name.

Constant | Value | Description
--- | --- | ---
`QNetworkRequest::ContentDispositionHeader` | `6` | Corresponds to the HTTP Content-Disposition header and contains a string containing the disposition type (for instance, attachment) and a parameter (for instance, filename).
`QNetworkRequest::ContentTypeHeader` | `0` | Corresponds to the HTTP Content-Type header and contains a string containing the media (MIME) type and any auxiliary data (for instance, charset).
`QNetworkRequest::ContentLengthHeader` | `1` | Corresponds to the HTTP Content-Length header and contains the length in bytes of the data transmitted.
`QNetworkRequest::LocationHeader` | `2` | Corresponds to the HTTP Location header and contains a URL representing the actual location of the data, including the destination URL in case of redirections.
`QNetworkRequest::LastModifiedHeader` | `3` | Corresponds to the HTTP Last-Modified header and contains a QDateTime representing the last modification date of the contents.
`QNetworkRequest::IfModifiedSinceHeader` | `9` | Corresponds to the HTTP If-Modified-Since header and contains a QDateTime. It is usually added to a QNetworkRequest. The server shall send a 304 (Not Modified) response if the resource has not changed since this time.
`QNetworkRequest::ETagHeader` | `10` | Corresponds to the HTTP ETag header and contains a QString representing the last modification state of the contents.
`QNetworkRequest::IfMatchHeader` | `11` | Corresponds to the HTTP If-Match header and contains a QStringList. It is usually added to a QNetworkRequest. The server shall send a 412 (Precondition Failed) response if the resource does not match.
`QNetworkRequest::IfNoneMatchHeader` | `12` | Corresponds to the HTTP If-None-Match header and contains a QStringList. It is usually added to a QNetworkRequest. The server shall send a 304 (Not Modified) response if the resource does match.
`QNetworkRequest::CookieHeader` | `4` | Corresponds to the HTTP Cookie header and contains a QList<QNetworkCookie> representing the cookies to be sent back to the server.
`QNetworkRequest::SetCookieHeader` | `5` | Corresponds to the HTTP Set-Cookie header and contains a QList<QNetworkCookie> representing the cookies sent by the server to be stored locally.
`QNetworkRequest::UserAgentHeader` | `7` | The User-Agent header sent by HTTP clients.
`QNetworkRequest::ServerHeader` | `8` | The Server header received by HTTP clients.

See also header(), setHeader(), rawHeader(), and setRawHeader().

### enum QNetworkRequest::LoadControl

Indicates if an aspect of the request's loading mechanism has been manually overridden, e.g. by Qt WebKit.

Constant | Value | Description
--- | --- | ---
`QNetworkRequest::Automatic` | `0` | default value: indicates default behaviour.
`QNetworkRequest::Manual` | `1` | indicates behaviour has been manually overridden.

### enum QNetworkRequest::Priority

This enum lists the possible network request priorities.

Constant | Value | Description
--- | --- | ---
`QNetworkRequest::HighPriority` | `1` | High priority
`QNetworkRequest::NormalPriority` | `3` | Normal priority
`QNetworkRequest::LowPriority` | `5` | Low priority

### enum QNetworkRequest::RedirectPolicy

Indicates whether the Network Access API should automatically follow a HTTP redirect response or not.

Constant | Value | Description
--- | --- | ---
`QNetworkRequest::ManualRedirectPolicy` | `0` | Not following any redirects.
`QNetworkRequest::NoLessSafeRedirectPolicy` | `1` | Default value: Only "http"->"http", "http" -> "https" or "https" -> "https" redirects are allowed.
`QNetworkRequest::SameOriginRedirectPolicy` | `2` | Require the same protocol, host and port. Note, http://example.com and http://example.com:80 will fail with this policy (implicit/explicit ports are considered to be a mismatch).
`QNetworkRequest::UserVerifiedRedirectPolicy` | `3` | Client decides whether to follow each redirect by handling the redirected() signal, emitting redirectAllowed() on the QNetworkReply object to allow the redirect or aborting/finishing it to reject the redirect. This can be used, for example, to ask the user whether to accept the redirect, or to decide based on some app-specific configuration. Note: When Qt handles redirects it will, for legacy and compatibility reasons, issue the redirected request using GET when the server returns a 301 or 302 response, regardless of the original method used, unless it was HEAD.

### enum QNetworkRequest::TransferTimeoutConstant

A constant that can be used for enabling transfer timeouts with a preset value.

Constant | Value | Description
--- | --- | ---
`QNetworkRequest::DefaultTransferTimeoutConstant` | `30000` | The transfer timeout in milliseconds. Used if setTransferTimeout() is called without an argument.

See also QNetworkRequest::DefaultTransferTimeout.

## Member Function Documentation

### QNetworkRequest::QNetworkRequest()

Constructs a QNetworkRequest object with no URL to be requested. Use setUrl() to set one.

See also url() and setUrl().

### `[explicit]` QNetworkRequest::QNetworkRequest(const QUrl &url)

Constructs a QNetworkRequest object with url as the URL to be requested.

See also url() and setUrl().

### QNetworkRequest::QNetworkRequest(const QNetworkRequest &other)

Creates a copy of other.

### `[noexcept]` QNetworkRequest::~QNetworkRequest()

Disposes of the QNetworkRequest object.

### QVariant QNetworkRequest::attribute(QNetworkRequest::Attribute code, const QVariant &defaultValue = QVariant()) const

Returns the attribute associated with the code code. If the attribute has not been set, it returns defaultValue.

Note: This function does not apply the defaults listed in QNetworkRequest::Attribute.

See also setAttribute() and QNetworkRequest::Attribute.

### `[since 6.2]` qint64 QNetworkRequest::decompressedSafetyCheckThreshold() const

Returns the threshold for archive bomb checks.

If the decompressed size of a reply is smaller than this, Qt will simply decompress it, without further checking.

This function was introduced in Qt 6.2.

See also setDecompressedSafetyCheckThreshold().

### bool QNetworkRequest::hasRawHeader(QAnyStringView headerName) const

Returns `true` if the raw header headerName is present in this network request.

Note: In Qt versions prior to 6.7, this function took QByteArray only.

See also rawHeader() and setRawHeader().

### QVariant QNetworkRequest::header(QNetworkRequest::KnownHeaders header) const

Returns the value of the known network header header if it is present in this request. If it is not present, returns QVariant() (i.e., an invalid variant).

See also KnownHeaders, rawHeader(), and setHeader().

### `[since 6.8]` QHttpHeaders QNetworkRequest::headers() const

Returns headers that are set in this network request.

This function was introduced in Qt 6.8.

See also setHeaders().

### `[since 6.5]` QHttp1Configuration QNetworkRequest::http1Configuration() const

Returns the current parameters that QNetworkAccessManager is using for the underlying HTTP/1 connection of this request.

This function was introduced in Qt 6.5.

See also setHttp1Configuration.

### QHttp2Configuration QNetworkRequest::http2Configuration() const

Returns the current parameters that QNetworkAccessManager is using for this request and its underlying HTTP/2 connection. This is either a configuration previously set by an application or a default configuration.

The default values that QNetworkAccessManager is using are:

- Window size for connection-level flowcontrol is 2147483647 octets
- Window size for stream-level flowcontrol is 214748364 octets
- Max frame size is 16384

By default, server push is disabled, Huffman compression and string indexing are enabled.

See also setHttp2Configuration.

### int QNetworkRequest::maximumRedirectsAllowed() const

Returns the maximum number of redirects allowed to be followed for this request.

See also setMaximumRedirectsAllowed().

### QObject *QNetworkRequest::originatingObject() const

Returns a reference to the object that initiated this network request; returns `nullptr` if not set or the object has been destroyed.

See also setOriginatingObject().

### QString QNetworkRequest::peerVerifyName() const

Returns the host name set for the certificate validation, as set by setPeerVerifyName. By default this returns a null string.

See also setPeerVerifyName.

### QNetworkRequest::Priority QNetworkRequest::priority() const

Return the priority of this request.

See also setPriority().

### QByteArray QNetworkRequest::rawHeader(QAnyStringView headerName) const

Returns the raw form of header headerName. If no such header is present, an empty QByteArray is returned, which may be indistinguishable from a header that is present but has no content (use hasRawHeader() to find out if the header exists or not).

Raw headers can be set with setRawHeader() or with setHeader().

Note: In Qt versions prior to 6.7, this function took QByteArray only.

See also header() and setRawHeader().

### QList<QByteArray> QNetworkRequest::rawHeaderList() const

Returns a list of all raw headers that are set in this network request. The list is in the order that the headers were set.

See also hasRawHeader() and rawHeader().

### void QNetworkRequest::setAttribute(QNetworkRequest::Attribute code, const QVariant &value)

Sets the attribute associated with code code to be value value. If the attribute is already set, the previous value is discarded. In special, if value is an invalid QVariant, the attribute is unset.

See also attribute() and QNetworkRequest::Attribute.

### `[since 6.2]` void QNetworkRequest::setDecompressedSafetyCheckThreshold(qint64 threshold)

Sets the threshold for archive bomb checks.

Some supported compression algorithms can, in a tiny compressed file, encode a spectacularly huge decompressed file. This is only possible if the decompressed content is extremely monotonous, which is seldom the case for real files being transmitted in good faith: files exercising such insanely high compression ratios are typically payloads of buffer-overrun attacks, or denial-of-service (by using up too much memory) attacks. Consequently, files that decompress to huge sizes, particularly from tiny compressed forms, are best rejected as suspected malware.

If a reply's decompressed size is bigger than this threshold (by default, 10 MiB, i.e. 10 * 1024 * 1024), Qt will check the compression ratio: if that is unreasonably large (40:1 for GZip and Deflate, or 100:1 for Brotli and ZStandard), the reply will be treated as an error. Setting the threshold to `-1` disables this check.

This function was introduced in Qt 6.2.

See also decompressedSafetyCheckThreshold().

### void QNetworkRequest::setHeader(QNetworkRequest::KnownHeaders header, const QVariant &value)

Sets the value of the known header header to be value, overriding any previously set headers. This operation also sets the equivalent raw HTTP header.

See also KnownHeaders, setRawHeader(), and header().

### `[since 6.8]` void QNetworkRequest::setHeaders(QHttpHeaders &&newHeaders)

Sets newHeaders as headers in this network request, overriding any previously set headers.

If some headers correspond to the known headers, the values will be parsed and the corresponding parsed form will also be set.

This function was introduced in Qt 6.8.

See also headers() and KnownHeaders.

### `[since 6.8]` void QNetworkRequest::setHeaders(const QHttpHeaders &newHeaders)

This is an overloaded function.

This function was introduced in Qt 6.8.

### `[since 6.5]` void QNetworkRequest::setHttp1Configuration(const QHttp1Configuration &configuration)

Sets request's HTTP/1 parameters from configuration.

This function was introduced in Qt 6.5.

See also http1Configuration, QNetworkAccessManager, and QHttp1Configuration.

### void QNetworkRequest::setHttp2Configuration(const QHttp2Configuration &configuration)

Sets request's HTTP/2 parameters from configuration.

Note: The configuration must be set prior to making a request.

Note: HTTP/2 multiplexes several streams in a single HTTP/2 connection. This implies that QNetworkAccessManager will use the configuration found in the first request from a series of requests sent to the same host.

See also http2Configuration, QNetworkAccessManager, and QHttp2Configuration.

### void QNetworkRequest::setMaximumRedirectsAllowed(int maxRedirectsAllowed)

Sets the maximum number of redirects allowed to be followed for this request to maxRedirectsAllowed.

See also maximumRedirectsAllowed().

### void QNetworkRequest::setOriginatingObject(QObject *object)

Allows setting a reference to the object initiating the request.

For example Qt WebKit sets the originating object to the QWebFrame that initiated the request.

See also originatingObject().

### void QNetworkRequest::setPeerVerifyName(const QString &peerName)

Sets peerName as host name for the certificate validation, instead of the one used for the TCP connection.

See also peerVerifyName.

### void QNetworkRequest::setPriority(QNetworkRequest::Priority priority)

Set the priority of this request to priority.

Note: The priority is only a hint to the network access manager. It can use it or not. Currently it is used for HTTP to decide which request should be sent first to a server.

See also priority().

### void QNetworkRequest::setRawHeader(const QByteArray &headerName, const QByteArray &headerValue)

Sets the header headerName to be of value headerValue. If headerName corresponds to a known header (see QNetworkRequest::KnownHeaders), the raw format will be parsed and the corresponding "cooked" header will be set as well.

For example:

     request.setRawHeader(QByteArray("Last-Modified"), QByteArray("Sun, 06 Nov 1994 08:49:37 GMT"));

will also set the known header LastModifiedHeader to be the QDateTime object of the parsed date.

Note: Setting the same header twice overrides the previous setting. To accomplish the behaviour of multiple HTTP headers of the same name, you should concatenate the two values, separating them with a comma (",") and set one single raw header.

Note: Since Qt 6.8, the header field names are normalized by converting them to lowercase.

See also KnownHeaders, setHeader(), hasRawHeader(), and rawHeader().

### void QNetworkRequest::setSslConfiguration(const QSslConfiguration &config)

Sets this network request's SSL configuration to be config. The settings that apply are the private key, the local certificate, the TLS protocol (e.g. TLS 1.3), the CA certificates and the ciphers that the SSL backend is allowed to use.

See also sslConfiguration() and QSslConfiguration::defaultConfiguration().

### `[since 6.11]` void QNetworkRequest::setTcpKeepAliveIdleTimeBeforeProbes(std::chrono::seconds idle)

Sets the time the connection needs to remain idle before TCP starts sending keepalive probes to be idle, if the TCP Keepalive functionality has been turned on.

This function was introduced in Qt 6.11.

See also tcpKeepAliveIdleTimeBeforeProbes().

### `[since 6.11]` void QNetworkRequest::setTcpKeepAliveIntervalBetweenProbes(std::chrono::seconds interval)

Sets the time between individual keepalive probes to be interval, if the TCP Keepalive functionality has been turned on.

This function was introduced in Qt 6.11.

See also tcpKeepAliveIntervalBetweenProbes().

### `[since 6.11]` void QNetworkRequest::setTcpKeepAliveProbeCount(int probes)

Sets the maximum number of keepalive probes TCP should send before dropping the connection, if the TCP Keepalive functionality has been turned on.

This function was introduced in Qt 6.11.

See also tcpKeepAliveProbeCount().

### void QNetworkRequest::setTransferTimeout(int timeout)

Sets timeout as the transfer timeout in milliseconds.

See also setTransferTimeout(std::chrono::milliseconds), transferTimeout(), and transferTimeoutAsDuration().

### `[since 6.7]` void QNetworkRequest::setTransferTimeout(std::chrono::milliseconds duration = DefaultTransferTimeout)

Sets the timeout duration to abort the transfer if no data is exchanged.

Transfers are aborted if no bytes are transferred before the timeout expires. Zero means no timer is set. If no argument is provided, the timeout is QNetworkRequest::DefaultTransferTimeout. If this function is not called, the timeout is disabled and has the value zero.

This function was introduced in Qt 6.7.

See also transferTimeoutAsDuration().

### void QNetworkRequest::setUrl(const QUrl &url)

Sets the URL this network request is referring to be url.

See also url().

### QSslConfiguration QNetworkRequest::sslConfiguration() const

Returns this network request's SSL configuration. By default this is the same as QSslConfiguration::defaultConfiguration().

See also setSslConfiguration() and QSslConfiguration::defaultConfiguration().

### `[noexcept]` void QNetworkRequest::swap(QNetworkRequest &other)

Swaps this network request with other. This operation is very fast and never fails.

### `[since 6.11]` std::chrono::seconds QNetworkRequest::tcpKeepAliveIdleTimeBeforeProbes() const

Returns the time the connection needs to remain idle before TCP starts sending keepalive probes, if the TCP Keepalive functionality has been turned on.

This function was introduced in Qt 6.11.

See also setTcpKeepAliveIdleTimeBeforeProbes().

### `[since 6.11]` std::chrono::seconds QNetworkRequest::tcpKeepAliveIntervalBetweenProbes() const

Returns the time between individual keepalive probes, if the TCP Keepalive functionality has been turned on.

This function was introduced in Qt 6.11.

See also setTcpKeepAliveIntervalBetweenProbes().

### `[since 6.11]` int QNetworkRequest::tcpKeepAliveProbeCount() const

Returns the maximum number of keepalive probes TCP should send before dropping the connection, if the TCP Keepalive functionality has been turned on.

This function was introduced in Qt 6.11.

See also setTcpKeepAliveProbeCount().

### int QNetworkRequest::transferTimeout() const

Returns the timeout used for transfers, in milliseconds.

If transferTimeoutAsDuration().count() cannot be represented in `int`, this function returns `INT_MAX`/`INT_MIN` instead.

See also setTransferTimeout() and transferTimeoutAsDuration().

### `[since 6.7]` std::chrono::milliseconds QNetworkRequest::transferTimeoutAsDuration() const

Returns the timeout duration after which the transfer is aborted if no data is exchanged.

The default duration is zero, which means that the timeout is not used.

This function was introduced in Qt 6.7.

See also setTransferTimeout(std::chrono::milliseconds).

### QUrl QNetworkRequest::url() const

Returns the URL this network request is referring to.

See also setUrl().

### bool QNetworkRequest::operator!=(const QNetworkRequest &other) const

Returns `false` if this object is not the same as other.

See also operator==().

### QNetworkRequest &QNetworkRequest::operator=(const QNetworkRequest &other)

Creates a copy of other

### bool QNetworkRequest::operator==(const QNetworkRequest &other) const

Returns `true` if this object is the same as other (i.e., if they have the same URL, same headers and same meta-data settings).

See also operator!=().

## Member Variable Documentation

### const std::chrono::std::chrono::milliseconds QNetworkRequest::DefaultTransferTimeout

The transfer timeout with QNetworkRequest::TransferTimeoutConstant milliseconds. Used if setTransferTimeout() is called without an argument.