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<link title="Get" rel="Chapter" href="Get.html"><title>Ocamlnet 4 Reference Manual : Nethttp_client.Convenience</title>
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<h1>Module <a href="type_Nethttp_client.Convenience.html">Nethttp_client.Convenience</a></h1>
<pre><span id="MODULEConvenience"><span class="keyword">module</span> Convenience</span>: <code class="code">sig</code> <a href="Nethttp_client.Convenience.html">..</a> <code class="code">end</code></pre><hr width="100%">
<p>Convenience module for simple applications</p>
<p>Do <code class="code">open Nethttp_client.Convenience</code> for simple applications.</p>
<p>The functions of this module share the following behaviour:</p>
<p>The environment variables <code class="code">http_proxy</code> and <code class="code">no_proxy</code> determine
the proxy settings. <code class="code">http_proxy</code> must be an http-URL that contains
the proxy's name, its port, and optionally user and password.
E.g. "http://eric:ericspassword@proxy:8080/".
The variable <code class="code">no_proxy</code> is a comma-separated list of hosts and
domains for which no proxy must be used.
E.g. "localhost, sun, moon, .intra.net"</p>
<p>There is a default behaviour for authentication. Both "basic" and
"digest" methods are enabled. Two global variables, <code class="code">http_user</code> and
<code class="code">http_password</code> set the user and password if the URL does not specify
them. In the case that user and password are included in the URL,
these values are always
used. <b>Note that basic authentication is by default only enabled over
connections that are secured via TLS! You can change that with the
function <code class="code">configure</code>, see below.</b></p>
<p>There is a default error behaviour. If a request fails, it is
automatically repeated. The variable <code class="code">http_trials</code> specifies the number
of times a request is submitted at most.
Requests are not repeated if there is a HTTP return code that indicates
a normal operating condition.
POST and DELETE requests are never repeated.</p>
<p>Error codes are reported as <a href="Nethttp_client.html#EXCEPTIONHttp_error"><code class="code">Nethttp_client.Http_error</code></a>. Note that
this is different than what the pipeline core does.</p>
<p><b>Thread safety</b></p>
<p>The Convenience module is fully thread-safe with the exception of the
exported variables (http_trials, http_user, and http_password). Note
that all threads share the same pipeline, and access to the pipeline
is serialized.
The latter simply means that it always works, but that threads may
block each other (i.e. the program slows down if more than one thread
wants to open http connections at the same time).</p>
<pre><span id="VALhttp_trials"><span class="keyword">val</span> http_trials</span> : <code class="type">int Stdlib.ref</code></pre><div class="info ">
<div class="info-desc">
<p>number of times every request is tried. Default: 3</p>
</div>
</div>
<pre><span id="VALhttp_user"><span class="keyword">val</span> http_user</span> : <code class="type">string Stdlib.ref</code></pre><div class="info ">
<div class="info-desc">
<p>The default user if authentication is required</p>
</div>
</div>
<pre><span id="VALhttp_password"><span class="keyword">val</span> http_password</span> : <code class="type">string Stdlib.ref</code></pre><div class="info ">
<div class="info-desc">
<p>The default password if authentication is required</p>
</div>
</div>
<pre><span id="VALconfigure"><span class="keyword">val</span> configure</span> : <code class="type">?insecure:bool -> unit -> unit</code></pre><div class="info ">
<div class="info-desc">
<p>Configurations:</p>
<ul>
<li><code class="code">insecure</code>: whether basic authentication over non-TLS connections
is enabled</li>
</ul>
<p>You can only configure before the first user.</p>
</div>
</div>
<pre><span id="VALconfigure_pipeline"><span class="keyword">val</span> configure_pipeline</span> : <code class="type">(<a href="Nethttp_client.pipeline-c.html">Nethttp_client.pipeline</a> -> unit) -> unit</code></pre><div class="info ">
<div class="info-desc">
<p>This function will be called before the pipeline is used. This
is intended for fine-grained configuration.</p>
</div>
</div>
<pre><span id="VALhttp_get_message"><span class="keyword">val</span> http_get_message</span> : <code class="type">string -> <a href="Nethttp_client.http_call-c.html">Nethttp_client.http_call</a></code></pre><div class="info ">
<div class="info-desc">
<p>Does a "GET" request with the given URL and returns the message</p>
</div>
</div>
<pre><span id="VALhttp_head_message"><span class="keyword">val</span> http_head_message</span> : <code class="type">string -> <a href="Nethttp_client.http_call-c.html">Nethttp_client.http_call</a></code></pre><div class="info ">
<div class="info-desc">
<p>Does a "HEAD" request with the given URL and returns the reply.</p>
</div>
</div>
<pre><span id="VALhttp_post_message"><span class="keyword">val</span> http_post_message</span> : <code class="type">string -> (string * string) list -> <a href="Nethttp_client.http_call-c.html">Nethttp_client.http_call</a></code></pre><div class="info ">
<div class="info-desc">
<p>Does a "POST" request with the given URL and returns the reply.
The list contains the parameters sent with the POST request.</p>
</div>
</div>
<pre><span id="VALhttp_put_message"><span class="keyword">val</span> http_put_message</span> : <code class="type">string -> string -> <a href="Nethttp_client.http_call-c.html">Nethttp_client.http_call</a></code></pre><div class="info ">
<div class="info-desc">
<p>Does a "PUT" request with the given URL and returns the reply.
The second argument contains the contents to be put.</p>
</div>
</div>
<pre><span id="VALhttp_delete_message"><span class="keyword">val</span> http_delete_message</span> : <code class="type">string -> <a href="Nethttp_client.http_call-c.html">Nethttp_client.http_call</a></code></pre><div class="info ">
<div class="info-desc">
<p>Does a "DELETE" request with the given URL and returns the reply.</p>
</div>
</div>
<pre><span id="VALhttp_get"><span class="keyword">val</span> http_get</span> : <code class="type">string -> string</code></pre><div class="info ">
<div class="info-desc">
<p>Does a "GET" request with the given URL and returns the message
body</p>
</div>
</div>
<pre><span id="VALhttp_post"><span class="keyword">val</span> http_post</span> : <code class="type">string -> (string * string) list -> string</code></pre><div class="info ">
<div class="info-desc">
<p>Does a "POST" request with the given URL and returns the response body.
The list contains the parameters send with the POST request.</p>
</div>
</div>
<pre><span id="VALhttp_put"><span class="keyword">val</span> http_put</span> : <code class="type">string -> string -> string</code></pre><div class="info ">
<div class="info-desc">
<p>Does a "PUT" request with the given URL and returns the response body.
The second argument contains the contents to be put.</p>
</div>
</div>
<pre><span id="VALhttp_delete"><span class="keyword">val</span> http_delete</span> : <code class="type">string -> string</code></pre><div class="info ">
<div class="info-desc">
<p>Does a "DELETE" request with the given URL and returns the response
body.</p>
</div>
</div>
<pre><span id="VALhttp_verbose"><span class="keyword">val</span> http_verbose</span> : <code class="type">?verbose_status:bool -><br> ?verbose_request_header:bool -><br> ?verbose_response_header:bool -><br> ?verbose_request_contents:bool -><br> ?verbose_response_contents:bool -><br> ?verbose_connection:bool -> ?verbose_events:bool -> unit -> unit</code></pre><div class="info ">
<div class="info-desc">
<p>Turns on debug messages on stderr. By default, all options are
turned on.</p>
</div>
</div>
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