public static final HTTPStream createHTTPStream(
String address,
boolean isPost,
byte[] postData,
String headers,
int timeOutMs,
int[] statusCode,
StringBuffer responseHeaders,
int numRedirectsToFollow) {
// timeout parameter of zero for HttpUrlConnection is a blocking connect (negative value for
// juce::URL)
if (timeOutMs < 0) timeOutMs = 0;
else if (timeOutMs == 0) timeOutMs = 30000;
// headers - if not empty, this string is appended onto the headers that are used for the
// request. It must therefore be a valid set of HTML header directives, separated by newlines.
// So convert headers string to an array, with an element for each line
String headerLines[] = headers.split("\\n");
for (; ; ) {
try {
HttpURLConnection connection = (HttpURLConnection) (new URL(address).openConnection());
if (connection != null) {
try {
connection.setInstanceFollowRedirects(false);
connection.setConnectTimeout(timeOutMs);
connection.setReadTimeout(timeOutMs);
// Set request headers
for (int i = 0; i < headerLines.length; ++i) {
int pos = headerLines[i].indexOf(":");
if (pos > 0 && pos < headerLines[i].length()) {
String field = headerLines[i].substring(0, pos);
String value = headerLines[i].substring(pos + 1);
if (value.length() > 0) connection.setRequestProperty(field, value);
}
}
if (isPost) {
connection.setRequestMethod("POST");
connection.setDoOutput(true);
if (postData != null) {
OutputStream out = connection.getOutputStream();
out.write(postData);
out.flush();
}
}
HTTPStream httpStream = new HTTPStream(connection, statusCode, responseHeaders);
// Process redirect & continue as necessary
int status = statusCode[0];
if (--numRedirectsToFollow >= 0
&& (status == 301 || status == 302 || status == 303 || status == 307)) {
// Assumes only one occurrence of "Location"
int pos1 = responseHeaders.indexOf("Location:") + 10;
int pos2 = responseHeaders.indexOf("\n", pos1);
if (pos2 > pos1) {
String newLocation = responseHeaders.substring(pos1, pos2);
// Handle newLocation whether it's absolute or relative
URL baseUrl = new URL(address);
URL newUrl = new URL(baseUrl, newLocation);
String transformedNewLocation = newUrl.toString();
if (transformedNewLocation != address) {
address = transformedNewLocation;
// Clear responseHeaders before next iteration
responseHeaders.delete(0, responseHeaders.length());
continue;
}
}
}
return httpStream;
} catch (Throwable e) {
connection.disconnect();
}
}
} catch (Throwable e) {
}
return null;
}
}
