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<title>Ocamlnet 2 Reference Manual : Nethttp</title>
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<center><h1>Module <a href="type_Nethttp.html">Nethttp</a></h1></center>
<br>
<pre><span class="keyword">module</span> Nethttp: <code class="code">sig</code> <a href="Nethttp.html">..</a> <code class="code">end</code></pre><a name="1_BasicdefinitionsfortheHTTPprotocol"></a>
<h1>Basic definitions for the HTTP protocol</h1><br>
<hr width="100%">
<br>
These definitions can be used by both HTTP clients and servers, and by
protocols in the middle, e.g. CGI.<br>
<pre><span class="keyword">type</span> <a name="TYPEprotocol_version"></a><code class="type"></code>protocol_version = <code class="type">int * int</code> </pre>
<br>
A pair of a major and minor version number<br>
<pre><span class="keyword">type</span> <a name="TYPEprotocol_attribute"></a><code class="type"></code>protocol_attribute = <code class="type">[ `Secure_https ]</code> </pre>
<pre><span class="keyword">type</span> <a name="TYPEprotocol"></a><code class="type"></code>protocol = <code class="type">[ `Http of <a href="Nethttp.html#TYPEprotocol_version">protocol_version</a> * <a href="Nethttp.html#TYPEprotocol_attribute">protocol_attribute</a> list<br> | `Other ]</code> </pre>
<div class="info">
The base protocol. RFC 2145 defines how to interpret major and
minor numbers. In particular, we have:<ul>
<li><code class="code">`Http((0,9),_)</code> is the ancient HTTP version 0.9</li>
<li><code class="code">`Http((1,n),_)</code> is the HTTP protocol 1.n. It is expected that
all these versions are compatible to each other
except negotiable features.</li>
<li><code class="code">`Http((m,_),_)</code> for m>1 is regarded as unknown protocol,
incompatible to any <code class="code">`Http((1,n),_)</code></li>
<li><code class="code">`Other</code> is anything else (unrecognizes protocol)</li>
</ul>
<br>
</div>
<pre><span class="keyword">val</span> <a name="VALstring_of_protocol"></a>string_of_protocol : <code class="type"><a href="Nethttp.html#TYPEprotocol">protocol</a> -> string</code></pre><div class="info">
Returns the string representation, e.g. "HTTP/1.0". Fails for <code class="code">`Other</code><br>
</div>
<pre><span class="keyword">val</span> <a name="VALprotocol_of_string"></a>protocol_of_string : <code class="type">string -> <a href="Nethttp.html#TYPEprotocol">protocol</a></code></pre><div class="info">
Parses the protocol string, e.g. "HTTP/1.0". Returns <code class="code">`Other</code>
for unrecognized strings<br>
</div>
<pre><span class="keyword">type</span> <a name="TYPEhttp_status"></a><code class="type"></code>http_status = <code class="type">[ `Accepted<br> | `Bad_gateway<br> | `Bad_request<br> | `Conflict<br> | `Continue<br> | `Created<br> | `Expectation_failed<br> | `Forbidden<br> | `Found<br> | `Gateway_timeout<br> | `Gone<br> | `Http_version_not_supported<br> | `Internal_server_error<br> | `Length_required<br> | `Method_not_allowed<br> | `Moved_permanently<br> | `Multiple_choices<br> | `No_content<br> | `Non_authoritative<br> | `Not_acceptable<br> | `Not_found<br> | `Not_implemented<br> | `Not_modified<br> | `Ok<br> | `Partial_content<br> | `Payment_required<br> | `Precondition_failed<br> | `Proxy_auth_required<br> | `Request_entity_too_large<br> | `Request_timeout<br> | `Request_uri_too_long<br> | `Requested_range_not_satisfiable<br> | `Reset_content<br> | `See_other<br> | `Service_unavailable<br> | `Switching_protocols<br> | `Temporary_redirect<br> | `Unauthorized<br> | `Unsupported_media_type<br> | `Use_proxy ]</code> </pre>
<div class="info">
HTTP response status:
<p>
<b>Informational (1xx):</b><ul>
<li><code class="code">`Continue</code></li>
<li><code class="code">`Switching_protocols</code></li>
</ul>
<b>Successful (2xx):</b><ul>
<li><code class="code">`Ok</code></li>
<li><code class="code">`Created</code></li>
<li><code class="code">`Accepted</code></li>
<li><code class="code">`Non_authoritative</code></li>
<li><code class="code">`No_content</code></li>
<li><code class="code">`Reset_content</code></li>
<li><code class="code">`Partial_content</code></li>
</ul>
<b>Redirection (3xx):</b><ul>
<li><code class="code">`Multiple_choices</code></li>
<li><code class="code">`Moved_permanently</code></li>
<li><code class="code">`Found</code></li>
<li><code class="code">`See_other</code></li>
<li><code class="code">`Not_modified</code></li>
<li><code class="code">`Use_proxy</code></li>
<li><code class="code">`Temporary_redirect</code></li>
</ul>
<b>Client error (4xx):</b><ul>
<li><code class="code">`Bad_request</code></li>
<li><code class="code">`Unauthorized</code></li>
<li><code class="code">`Payment_required</code></li>
<li><code class="code">`Forbidden</code></li>
<li><code class="code">`Not_found</code></li>
<li><code class="code">`Method_not_allowed</code></li>
<li><code class="code">`Not_acceptable</code></li>
<li><code class="code">`Proxy_auth_required</code></li>
<li><code class="code">`Request_timeout</code></li>
<li><code class="code">`Conflict</code></li>
<li><code class="code">`Gone</code></li>
<li><code class="code">`Length_required</code></li>
<li><code class="code">`Precondition_failed</code></li>
<li><code class="code">`Request_entity_too_large</code></li>
<li><code class="code">`Request_uri_too_long</code></li>
<li><code class="code">`Unsupported_media_type</code></li>
<li><code class="code">`Request_range_not_satisfiable</code></li>
<li><code class="code">`Expectation_failed</code></li>
</ul>
<b>Server Error (5xx):</b><ul>
<li><code class="code">`Internal_server_error</code></li>
<li><code class="code">`Not_implemented</code></li>
<li><code class="code">`Bad_gateway</code></li>
<li><code class="code">`Service_unavailable</code></li>
<li><code class="code">`Gateway_timeout</code></li>
<li><code class="code">`Http_version_not_supported</code></li>
</ul>
<br>
</div>
<pre><span class="keyword">val</span> <a name="VALint_of_http_status"></a>int_of_http_status : <code class="type"><a href="Nethttp.html#TYPEhttp_status">http_status</a> -> int</code></pre><div class="info">
Returns the integer code for a status value<br>
</div>
<pre><span class="keyword">val</span> <a name="VALhttp_status_of_int"></a>http_status_of_int : <code class="type">int -> <a href="Nethttp.html#TYPEhttp_status">http_status</a></code></pre><div class="info">
Returns the status value for an integer code, or raises <code class="code">Not_found</code><br>
</div>
<pre><span class="keyword">val</span> <a name="VALstring_of_http_status"></a>string_of_http_status : <code class="type"><a href="Nethttp.html#TYPEhttp_status">http_status</a> -> string</code></pre><div class="info">
Returns the informational text for a status value<br>
</div>
<pre><span class="keyword">type</span> <a name="TYPEhttp_method"></a><code class="type"></code>http_method = <code class="type">string * string</code> </pre>
<div class="info">
Method name, URI<br>
</div>
<pre><span class="keyword">type</span> <a name="TYPEcache_control_token"></a><code class="type"></code>cache_control_token = <code class="type">[ `Extension of string * string option<br> | `Max_age of int<br> | `Max_stale of int option<br> | `Min_fresh of int<br> | `Must_revalidate<br> | `No_cache of string list<br> | `No_store<br> | `No_transform<br> | `Only_if_cached<br> | `Private of string list<br> | `Proxy_revalidate<br> | `Public<br> | `S_maxage of int ]</code> </pre>
<div class="info">
The cache control token for the <code class="code">Cache-control</code> header<br>
</div>
<pre><span class="keyword">type</span> <a name="TYPEetag"></a><code class="type"></code>etag = <code class="type">[ `Strong of string | `Weak of string ]</code> </pre>
<div class="info">
Entity tags can be weak or strong<br>
</div>
<pre><span class="keyword">val</span> <a name="VALweak_validator_match"></a>weak_validator_match : <code class="type"><a href="Nethttp.html#TYPEetag">etag</a> -> <a href="Nethttp.html#TYPEetag">etag</a> -> bool</code></pre><div class="info">
Whether the tags match weakly (see RFC 2616 for definition)<br>
</div>
<pre><span class="keyword">val</span> <a name="VALstrong_validator_match"></a>strong_validator_match : <code class="type"><a href="Nethttp.html#TYPEetag">etag</a> -> <a href="Nethttp.html#TYPEetag">etag</a> -> bool</code></pre><div class="info">
Whether the tags match strongly (see RFC 2616 for definition)<br>
</div>
<pre><span class="keyword">exception</span> <a name="EXCEPTIONBad_header_field"></a>Bad_header_field <span class="keyword">of</span> <code class="type">string</code></pre>
<div class="info">
Raised when a header field cannot be parsed. The string argument
is the name of the failing function<br>
</div>
<pre><span class="keyword">class type</span> <a name="TYPEhttp_header"></a><a href="Nethttp.http_header.html">http_header</a> = <code class="type"><a href="Netmime.mime_header.html">Netmime.mime_header</a></code></pre><pre><span class="keyword">class type</span> <a name="TYPEhttp_header_ro"></a><a href="Nethttp.http_header_ro.html">http_header_ro</a> = <code class="type"><a href="Netmime.mime_header_ro.html">Netmime.mime_header_ro</a></code></pre><div class="info">
The HTTP header is represented as MIME header
</div>
<pre><span class="keyword">class type</span> <a name="TYPEhttp_trailer"></a><a href="Nethttp.http_trailer.html">http_trailer</a> = <code class="type"><a href="Netmime.mime_header.html">Netmime.mime_header</a></code></pre><pre><span class="keyword">class type</span> <a name="TYPEhttp_trailer_ro"></a><a href="Nethttp.http_trailer_ro.html">http_trailer_ro</a> = <code class="type"><a href="Netmime.mime_header_ro.html">Netmime.mime_header_ro</a></code></pre><div class="info">
The HTTP trailer is represented as MIME header
</div>
<pre><span class="keyword">val</span> <a name="VALstatus_of_cgi_header"></a>status_of_cgi_header : <code class="type"><a href="Nethttp.http_header.html">http_header</a> -> int * string</code></pre><div class="info">
Returns the status code and the status text corresponding to the
<code class="code">Status</code> header<br>
</div>
<br><code><span class="keyword">type</span> <a name="TYPEcookie"></a><code class="type"></code>cookie = {</code><table class="typetable">
<tr>
<td align="left" valign="top" >
<code> </code></td>
<td align="left" valign="top" >
<code>cookie_name : <code class="type">string</code>;</code></td>
<td class="typefieldcomment" align="left" valign="top" ><code>(*</code></td><td class="typefieldcomment" align="left" valign="top" >The name of the cookie</td><td class="typefieldcomment" align="left" valign="bottom" ><code>*)</code></td>
</tr>
<tr>
<td align="left" valign="top" >
<code> </code></td>
<td align="left" valign="top" >
<code>cookie_value : <code class="type">string</code>;</code></td>
<td class="typefieldcomment" align="left" valign="top" ><code>(*</code></td><td class="typefieldcomment" align="left" valign="top" >The value of the cookie. There are no restrictions on the
value of the cookie</td><td class="typefieldcomment" align="left" valign="bottom" ><code>*)</code></td>
</tr>
<tr>
<td align="left" valign="top" >
<code> </code></td>
<td align="left" valign="top" >
<code>cookie_expires : <code class="type">float option</code>;</code></td>
<td class="typefieldcomment" align="left" valign="top" ><code>(*</code></td><td class="typefieldcomment" align="left" valign="top" >Expiration:<ul>
<li><code class="code">None</code>: the cookie expires when the browser session ends.</li>
<li><code class="code">Some t</code>: the cookie expires at the time <code class="code">t</code> (seconds since
the epoch)</li>
</ul>
</td><td class="typefieldcomment" align="left" valign="bottom" ><code>*)</code></td>
</tr>
<tr>
<td align="left" valign="top" >
<code> </code></td>
<td align="left" valign="top" >
<code>cookie_domain : <code class="type">string option</code>;</code></td>
<td class="typefieldcomment" align="left" valign="top" ><code>(*</code></td><td class="typefieldcomment" align="left" valign="top" >Cookies are bound to a certain domain, i.e. the browser sends
them only when web pages of the domain are requested:
<p>
<ul>
<li><code class="code">None</code>: the domain is the hostname of the server</li>
<li><code class="code">Some domain</code>: the domain is <code class="code">domain</code></li>
</ul>
</td><td class="typefieldcomment" align="left" valign="bottom" ><code>*)</code></td>
</tr>
<tr>
<td align="left" valign="top" >
<code> </code></td>
<td align="left" valign="top" >
<code>cookie_path : <code class="type">string option</code>;</code></td>
<td class="typefieldcomment" align="left" valign="top" ><code>(*</code></td><td class="typefieldcomment" align="left" valign="top" >Cookies are also bound to certain path prefixes, i.e. the browser
sends them only when web pages at the path or below are requested.
<p>
<ul>
<li><code class="code">None</code>: the path is script name + path_info</li>
<li><code class="code">Some p</code>: the path is <code class="code">p</code>. With <code class="code">Some "/"</code> you can disable the
path restriction completely.</li>
</ul>
</td><td class="typefieldcomment" align="left" valign="bottom" ><code>*)</code></td>
</tr>
<tr>
<td align="left" valign="top" >
<code> </code></td>
<td align="left" valign="top" >
<code>cookie_secure : <code class="type">bool</code>;</code></td>
<td class="typefieldcomment" align="left" valign="top" ><code>(*</code></td><td class="typefieldcomment" align="left" valign="top" >Cookies are also bound to the type of the web server:
<code class="code">false</code> means servers without SSL, <code class="code">true</code> means servers with
activated SSL ("https").</td><td class="typefieldcomment" align="left" valign="bottom" ><code>*)</code></td>
</tr></table>
}
<pre><span class="keyword">val</span> <a name="VALdecode_query"></a>decode_query : <code class="type">string -> string * string</code></pre><div class="info">
Splits the URI into a "script name" and a "query string"<br>
</div>
<pre><span class="keyword">val</span> <a name="VALsplit_host_port"></a>split_host_port : <code class="type">string -> string * int option</code></pre><div class="info">
Splits the <code class="code">Host</code> header in hostname and optional port number.
Fails on syntax error<br>
</div>
<pre><span class="keyword">val</span> <a name="VALuripath_encode"></a>uripath_encode : <code class="type">string -> string</code></pre><div class="info">
Encodes unsafe characters in URI paths. The slash character is not encoded.
This function should only be applied to the part before '?'.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALuripath_decode"></a>uripath_decode : <code class="type">string -> string</code></pre><div class="info">
Decodes %XX sequences in URI paths. %2F is forbidden (failure).
This function should only be applied to the part before '?'.<br>
</div>
<br>
<a name="2_ParsingandPrintingofHeaders"></a>
<h2>Parsing and Printing of Headers</h2><br>
<pre><span class="keyword">module</span> <a href="Nethttp.Header.html">Header</a>: <code class="code">sig</code> <a href="Nethttp.Header.html">..</a> <code class="code">end</code></pre></body></html>
