7 calls to AbstractMessage::setHeader()

AbstractMessage::setTokenizedHeader in drupal/core/vendor/guzzle/http/Guzzle/Http/Message/AbstractMessage.php
Set a tokenized header on the request that implodes a Collection of data into a string separated by a token.
EntityEnclosingRequest::processPostFields in drupal/core/vendor/guzzle/http/Guzzle/Http/Message/EntityEnclosingRequest.php
Determine what type of request should be sent based on post fields
EntityEnclosingRequest::setBody in drupal/core/vendor/guzzle/http/Guzzle/Http/Message/EntityEnclosingRequest.php
Set the body of the request
EntityEnclosingRequest::setExpectHeaderCutoff in drupal/core/vendor/guzzle/http/Guzzle/Http/Message/EntityEnclosingRequest.php
Set the size that the entity body of the request must exceed before adding the Expect: 100-Continue header.
Request::addCookie in drupal/core/vendor/guzzle/http/Guzzle/Http/Message/Request.php
Add a Cookie value by name to the Cookie header
Request::setAuth in drupal/core/vendor/guzzle/http/Guzzle/Http/Message/Request.php
Set HTTP authorization parameters
Request::__construct in drupal/core/vendor/guzzle/http/Guzzle/Http/Message/Request.php
Create a new request