@Override
public String getHeaderFieldKey(int pos) {
try {
getInputStream();
} catch (IOException e) {
// ignore
}
if (null == resHeader) {
return null;
}
return resHeader.getKey(pos);
}
private byte[] createRequest() throws IOException {
StringBuilder output = new StringBuilder(256);
output.append(method);
output.append(' ');
output.append(requestString());
output.append(' ');
output.append("HTTP/1."); // $NON-NLS-1$
if (httpVersion == 0) {
output.append("0\r\n"); // $NON-NLS-1$
} else {
output.append("1\r\n"); // $NON-NLS-1$
}
// add user-specified request headers if any
boolean hasContentLength = false;
for (int i = 0; i < reqHeader.length(); i++) {
String key = reqHeader.getKey(i);
if (key != null) {
String lKey = key.toLowerCase();
if ((os != null && !os.isChunked())
|| (!lKey.equals("transfer-encoding")
&& !lKey //$NON-NLS-1$
.equals("content-length"))) { // $NON-NLS-1$
output.append(key);
String value = reqHeader.get(i);
/*
* duplicates are allowed under certain conditions see
* http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2
*/
if (lKey.equals("content-length")) { // $NON-NLS-1$
hasContentLength = true;
/*
* if both setFixedLengthStreamingMode and
* content-length are set, use fixedContentLength first
*/
if (fixedContentLength >= 0) {
value = String.valueOf(fixedContentLength);
}
}
if (value != null) {
output.append(": "); // $NON-NLS-1$
output.append(value);
}
output.append("\r\n"); // $NON-NLS-1$
}
}
}
if (fixedContentLength >= 0 && !hasContentLength) {
output.append("content-length: "); // $NON-NLS-1$
output.append(String.valueOf(fixedContentLength));
output.append("\r\n"); // $NON-NLS-1$
}
if (reqHeader.get("User-Agent") == null) { // $NON-NLS-1$
output.append("User-Agent: "); // $NON-NLS-1$
String agent = getSystemProperty("http.agent"); // $NON-NLS-1$
if (agent == null) {
output.append("Java"); // $NON-NLS-1$
output.append(getSystemProperty("java.version")); // $NON-NLS-1$
} else {
output.append(agent);
}
output.append("\r\n"); // $NON-NLS-1$
}
if (reqHeader.get("Host") == null) { // $NON-NLS-1$
output.append("Host: "); // $NON-NLS-1$
output.append(url.getHost());
int port = url.getPort();
if (port > 0 && port != defaultPort) {
output.append(':');
output.append(Integer.toString(port));
}
output.append("\r\n"); // $NON-NLS-1$
}
if (reqHeader.get("Accept") == null) { // $NON-NLS-1$
output.append("Accept: *; */*\r\n"); // $NON-NLS-1$
}
if (httpVersion > 0 && reqHeader.get("Connection") == null) { // $NON-NLS-1$
output.append("Connection: Keep-Alive\r\n"); // $NON-NLS-1$
}
// if we are doing output make sure the appropriate headers are sent
if (os != null) {
if (reqHeader.get("Content-Type") == null) { // $NON-NLS-1$
output.append("Content-Type: application/x-www-form-urlencoded\r\n"); // $NON-NLS-1$
}
if (os.isCached()) {
if (reqHeader.get("Content-Length") == null) { // $NON-NLS-1$
output.append("Content-Length: "); // $NON-NLS-1$
output.append(Integer.toString(os.size()));
output.append("\r\n"); // $NON-NLS-1$
}
} else if (os.isChunked()) {
output.append("Transfer-Encoding: chunked\r\n"); // $NON-NLS-1$
}
}
// end the headers
output.append("\r\n"); // $NON-NLS-1$
return output.toString().getBytes("ISO8859_1"); // $NON-NLS-1$
}