javax.microedition.io
Interface HttpsConnection
- All Superinterfaces:
- javax.microedition.io.Connection, javax.microedition.io.ContentConnection, HttpConnection, javax.microedition.io.InputConnection, javax.microedition.io.OutputConnection, javax.microedition.io.StreamConnection
public interface HttpsConnection
- extends HttpConnection
This interface defines the necessary methods and constants to establish a
secure network connection. The URI format with scheme https
when passed to Connector.open
will return a
HttpsConnection
. [RFC2818]
defines the scheme.
The SSL V3 protocol as specified in The SSL Protocol
Version 3.0 MUST be supported as the secure protocol. An implementation
that supports TLS v1.0 and supports section E of [RFC2246]
(to provide backwards compatibility with SSL v3.0 servers) is compliant with this
requirement.
Other secure protocols, such as TLS Protocols Version 1.0 as
specified in [RFC2246],
WTLS as specified in Wireless Transport Layer Security Specification,
WAP-261-WTLS, WAP Forum, and TLS Profile and Tunneling Specification as specified in
WAP-219-TLS, WAP Forum,
MAY also be supported.
HTTPS is the secure version of HTTP ([RFC2616]),
a request-response protocol in which the parameters of the request must be set before the
request is sent.
In addition to the normal IOExceptions
that may occur during
invocation of the various methods that cause a transition to the Connected
state, CertificateException
(a subtype of
IOException
) may be thrown to indicate various failures
related to establishing the secure link. The secure link is necessary in the
Connected
state so the headers can be sent securely. The
secure link may be established as early as the invocation of
Connector.open()
and related methods for opening input and
output streams and failure related to certificate exceptions may be reported.
Example
Open a HTTPS connection, set its parameters, then read the HTTP response.
Connector.open
is used to open the URL and an
HttpsConnection
is returned. The HTTP headers are read and
processed. If the length is available, it is used to read the data in bulk.
From the HttpsConnection
the InputStream
is
opened. It is used to read every character until end of file (-1). If an
exception is thrown the connection and stream are closed.
void getViaHttpsConnection(String url) throws CertificateException, IOException {
HttpsConnection c = null;
InputStream is = null;
try {
c = (HttpsConnection)Connector.open(url);
// Getting the InputStream ensures that the connection
// is opened (if it was not already handled by
// Connector.open()) and the SSL handshake is exchanged,
// and the HTTP response headers are read.
// These are stored until requested.
is = c.openDataInputStream();
if (c.getResponseCode() == HttpConnection.HTTP_OK) {
// Get the length and process the data
int len = (int)c.getLength();
if (len > 0) {
byte[] data = new byte[len];
int actual = is.readFully(data); ...
} else {
int ch;
while((ch = is.read()) != -1) {
...
}
}
} else {
...
}
} finally {
if (is != null)
is.close();
if (c != null)
c.close();
}
}
- Since:
- MIDP 2.0
- See Also:
CertificateException
Fields inherited from interface javax.microedition.io.HttpConnection |
DELETE, GET, HEAD, HTTP_ACCEPTED, HTTP_BAD_GATEWAY, HTTP_BAD_METHOD, HTTP_BAD_REQUEST, HTTP_CLIENT_TIMEOUT, HTTP_CONFLICT, HTTP_CREATED, HTTP_ENTITY_TOO_LARGE, HTTP_EXPECT_FAILED, HTTP_FORBIDDEN, HTTP_GATEWAY_TIMEOUT, HTTP_GONE, HTTP_INTERNAL_ERROR, HTTP_LENGTH_REQUIRED, HTTP_MOVED_PERM, HTTP_MOVED_TEMP, HTTP_MULT_CHOICE, HTTP_NO_CONTENT, HTTP_NOT_ACCEPTABLE, HTTP_NOT_AUTHORITATIVE, HTTP_NOT_FOUND, HTTP_NOT_IMPLEMENTED, HTTP_NOT_MODIFIED, HTTP_OK, HTTP_PARTIAL, HTTP_PAYMENT_REQUIRED, HTTP_PRECON_FAILED, HTTP_PROXY_AUTH, HTTP_REQ_TOO_LONG, HTTP_RESET, HTTP_SEE_OTHER, HTTP_TEMP_REDIRECT, HTTP_UNAUTHORIZED, HTTP_UNAVAILABLE, HTTP_UNSUPPORTED_RANGE, HTTP_UNSUPPORTED_TYPE, HTTP_USE_PROXY, HTTP_VERSION, POST, PUT |
Method Summary |
int |
getPort()
Returns the network port number of the URL for this
HttpsConnection . |
SecurityInfo |
getSecurityInfo()
Return the security information associated with this successfully opened
connection. |
Methods inherited from interface javax.microedition.io.HttpConnection |
getDate, getExpiration, getFile, getHeaderField, getHeaderField, getHeaderFieldDate, getHeaderFieldInt, getHeaderFieldKey, getHost, getLastModified, getProtocol, getQuery, getRef, getRequestMethod, getRequestProperty, getResponseCode, getResponseMessage, getURL, setRequestMethod, setRequestProperty |
Methods inherited from interface javax.microedition.io.ContentConnection |
getEncoding, getLength, getType |
Methods inherited from interface javax.microedition.io.InputConnection |
openDataInputStream, openInputStream |
Methods inherited from interface javax.microedition.io.Connection |
close |
Methods inherited from interface javax.microedition.io.OutputConnection |
openDataOutputStream, openOutputStream |
Methods inherited from interface javax.microedition.io.Connection |
close |
getSecurityInfo
SecurityInfo getSecurityInfo()
throws java.io.IOException
- Return the security information associated with this successfully opened
connection. If the connection is still in
Setup
state then
the connection is initiated to establish the secure connection to the
server. The method returns when the connection is established and the
Certificate
supplied by the server has been validated. The
SecurityInfo
is only returned if the connection has been
successfully made to the server.
- Returns:
- the security information associated with this open connection.
- Throws:
java.io.IOException
- if an arbitrary connection failure occurs
getPort
int getPort()
- Returns the network port number of the URL for this
HttpsConnection
.
- Specified by:
getPort
in interface HttpConnection
- Returns:
- the network port number of the URL for this
HttpsConnection
. The default HTTPS port number
(443) is returned if there was no port number in the string
passed to Connector.open
.
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