Mp4 cannot play on iOS by request spring mvc server resource, but working on Nginx access mp4 file directly - ios

I have two scenario when play mp4 file on iOS devices.
MP4 access by Nginx is working:
Put mp4 file in /html and using following configure, then iOS devices and chrome browser can play mp4 files properly.
server {
listen 127.0.0.1:80 default_server;
location ~ ^/storage\/*.mp4 {
root html;
}
}
MP4 access by Tomcat Spring MVC is not working: When I request by Spring mvc restful API and return ResponseEntity contains Resource Object, in chrome browser will receive and play mp4 properly. But iOS devices not working
#GetMapping(value = "/storage/{filename:.+}")
#ResponseBody
public ResponseEntity<org.springframework.core.io.Resource> accessStorageFile(HttpServletResponse response, #PathVariable String filename) throws IOException {
org.springframework.core.io.Resource resource = storageUtil.loadAsResource(filename);
InputStream inputStream = resource.getInputStream();
InputStreamResource inputStreamResource = new InputStreamResource(inputStream);
String contentType = FileTypeMap.getDefaultFileTypeMap().getContentType(resource.getFile());
contentType = resource.getFilename().contains(".mp4") ? "video/mp4" : contentType;
response.setContentType(contentType);
HttpHeaders responseHeaders = new HttpHeaders();
responseHeaders.setContentType(MediaType.valueOf(contentType));
responseHeaders.setContentLength(resource.getFile().length());
return new ResponseEntity<>(inputStreamResource, responseHeaders, HttpStatus.OK);
}

import java.io.BufferedInputStream; import java.io.File; import
java.io.IOException; import java.io.InputStream; import
java.io.OutputStream; import java.nio.file.Files; import
java.nio.file.Path; import java.nio.file.Paths; import
java.nio.file.attribute.FileTime; import java.time.LocalDateTime;
import java.time.ZoneId; import java.time.ZoneOffset; import
java.util.ArrayList; import java.util.Arrays; import java.util.List;
import javax.servlet.ServletOutputStream; import
javax.servlet.http.HttpServletRequest; import
javax.servlet.http.HttpServletResponse; import
org.springframework.util.StringUtils;
/** * * #author David 1 */ public class MultipartFileSender {
private static final int DEFAULT_BUFFER_SIZE = 20480; // ..bytes = 20KB.
private static final long DEFAULT_EXPIRE_TIME = 604800000L; // ..ms = 1 week.
private static final String MULTIPART_BOUNDARY = "MULTIPART_BYTERANGES";
Path filepath;
HttpServletRequest request;
HttpServletResponse response;
public MultipartFileSender() {
}
public static MultipartFileSender fromPath(Path path) {
return new MultipartFileSender().setFilepath(path);
}
public static MultipartFileSender fromFile(File file) {
return new MultipartFileSender().setFilepath(file.toPath());
}
public static MultipartFileSender fromURIString(String uri) {
return new MultipartFileSender().setFilepath(Paths.get(uri));
}
//** internal setter **//
private MultipartFileSender setFilepath(Path filepath) {
this.filepath = filepath;
return this;
}
public MultipartFileSender with(HttpServletRequest httpRequest) {
request = httpRequest;
return this;
}
public MultipartFileSender with(HttpServletResponse httpResponse) {
response = httpResponse;
return this;
}
public void serveResource() throws Exception {
if (response == null || request == null) {
return;
}
if (!Files.exists(filepath)) {
System.out.println("File doesn't exist at URI : {" + filepath.toAbsolutePath().toString() + "}");
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
Long length = Files.size(filepath);
String fileName = filepath.getFileName().toString();
FileTime lastModifiedObj = Files.getLastModifiedTime(filepath);
if (StringUtils.isEmpty(fileName) || lastModifiedObj == null) {
response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
return;
}
long lastModified = LocalDateTime.ofInstant(lastModifiedObj.toInstant(),
ZoneId.of(ZoneOffset.systemDefault().getId())).toEpochSecond(ZoneOffset.UTC);
String contentType = "video/mp4";
// Validate request headers for caching ---------------------------------------------------
// If-None-Match header should contain "*" or ETag. If so, then return 304.
String ifNoneMatch = request.getHeader("If-None-Match");
if (ifNoneMatch != null && HttpUtils.matches(ifNoneMatch, fileName)) {
response.setHeader("ETag", fileName); // Required in 304.
response.sendError(HttpServletResponse.SC_NOT_MODIFIED);
return;
}
// If-Modified-Since header should be greater than LastModified. If so, then return 304.
// This header is ignored if any If-None-Match header is specified.
long ifModifiedSince = request.getDateHeader("If-Modified-Since");
if (ifNoneMatch == null && ifModifiedSince != -1 && ifModifiedSince + 1000 > lastModified) {
response.setHeader("ETag", fileName); // Required in 304.
response.sendError(HttpServletResponse.SC_NOT_MODIFIED);
return;
}
// Validate request headers for resume ----------------------------------------------------
// If-Match header should contain "*" or ETag. If not, then return 412.
String ifMatch = request.getHeader("If-Match");
if (ifMatch != null && !HttpUtils.matches(ifMatch, fileName)) {
response.sendError(HttpServletResponse.SC_PRECONDITION_FAILED);
return;
}
// If-Unmodified-Since header should be greater than LastModified. If not, then return 412.
long ifUnmodifiedSince = request.getDateHeader("If-Unmodified-Since");
if (ifUnmodifiedSince != -1 && ifUnmodifiedSince + 1000 <= lastModified) {
response.sendError(HttpServletResponse.SC_PRECONDITION_FAILED);
return;
}
// Validate and process range -------------------------------------------------------------
// Prepare some variables. The full Range represents the complete file.
Range full = new Range(0, length - 1, length);
List<Range> ranges = new ArrayList<>();
// Validate and process Range and If-Range headers.
String range = request.getHeader("Range");
if (range != null) {
// Range header should match format "bytes=n-n,n-n,n-n...". If not, then return 416.
if (!range.matches("^bytes=\\d*-\\d*(,\\d*-\\d*)*$")) {
response.setHeader("Content-Range", "bytes */" + length); // Required in 416.
response.sendError(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
return;
}
String ifRange = request.getHeader("If-Range");
if (ifRange != null && !ifRange.equals(fileName)) {
try {
long ifRangeTime = request.getDateHeader("If-Range"); // Throws IAE if invalid.
if (ifRangeTime != -1) {
ranges.add(full);
}
} catch (IllegalArgumentException ignore) {
ranges.add(full);
}
}
// If any valid If-Range header, then process each part of byte range.
if (ranges.isEmpty()) {
for (String part : range.substring(6).split(",")) {
// Assuming a file with length of 100, the following examples returns bytes at:
// 50-80 (50 to 80), 40- (40 to length=100), -20 (length-20=80 to length=100).
long start = Range.sublong(part, 0, part.indexOf("-"));
long end = Range.sublong(part, part.indexOf("-") + 1, part.length());
if (start == -1) {
start = length - end;
end = length - 1;
} else if (end == -1 || end > length - 1) {
end = length - 1;
}
// Check if Range is syntactically valid. If not, then return 416.
if (start > end) {
response.setHeader("Content-Range", "bytes */" + length); // Required in 416.
response.sendError(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
return;
}
// Add range.
ranges.add(new Range(start, end, length));
}
}
}
// Prepare and initialize response --------------------------------------------------------
// Get content type by file name and set content disposition.
String disposition = "inline";
// If content type is unknown, then set the default value.
// For all content types, see: http://www.w3schools.com/media/media_mimeref.asp
// To add new content types, add new mime-mapping entry in web.xml.
if (contentType == null) {
contentType = "application/octet-stream";
} else if (!contentType.startsWith("image")) {
// Else, expect for images, determine content disposition. If content type is supported by
// the browser, then set to inline, else attachment which will pop a 'save as' dialogue.
String accept = request.getHeader("Accept");
disposition = accept != null && HttpUtils.accepts(accept, contentType) ? "inline" : "attachment";
}
System.out.println("Content-Type : {" + contentType + "}");
// Initialize response.
response.reset();
response.setBufferSize(DEFAULT_BUFFER_SIZE);
response.setHeader("Content-Type", contentType);
response.setHeader("Content-Disposition", disposition + ";filename=\"" + fileName + "\"");
System.out.println("Content-Disposition : {" + disposition + "}");
response.setHeader("Accept-Ranges", "bytes");
response.setHeader("ETag", fileName);
response.setDateHeader("Last-Modified", lastModified);
response.setDateHeader("Expires", System.currentTimeMillis() + DEFAULT_EXPIRE_TIME);
// Send requested file (part(s)) to client ------------------------------------------------
// Prepare streams.
try (InputStream input = new BufferedInputStream(Files.newInputStream(filepath));
OutputStream output = response.getOutputStream()) {
if (ranges.isEmpty() || ranges.get(0) == full) {
// Return full file.
System.out.println("Return full file");
response.setContentType(contentType);
response.setHeader("Content-Range", "bytes " + full.start + "-" + full.end + "/" + full.total);
response.setHeader("Content-Length", String.valueOf(full.length));
Range.copy(input, output, length, full.start, full.length);
} else if (ranges.size() == 1) {
// Return single part of file.
Range r = ranges.get(0);
System.out.println("Return 1 part of file : from ({" + r.start + "}) to ({" + r.end + "})");
response.setContentType(contentType);
response.setHeader("Content-Range", "bytes " + r.start + "-" + r.end + "/" + r.total);
response.setHeader("Content-Length", String.valueOf(r.length));
response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT); // 206.
// Copy single part range.
Range.copy(input, output, length, r.start, r.length);
} else {
// Return multiple parts of file.
response.setContentType("multipart/byteranges; boundary=" + MULTIPART_BOUNDARY);
response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT); // 206.
// Cast back to ServletOutputStream to get the easy println methods.
ServletOutputStream sos = (ServletOutputStream) output;
// Copy multi part range.
for (Range r : ranges) {
System.out.println("Return multi part of file : from ({" + r.start + "}) to ({" + r.end + "})");
// Add multipart boundary and header fields for every range.
sos.println();
sos.println("--" + MULTIPART_BOUNDARY);
sos.println("Content-Type: " + contentType);
sos.println("Content-Range: bytes " + r.start + "-" + r.end + "/" + r.total);
// Copy single part range of multi part range.
Range.copy(input, output, length, r.start, r.length);
}
// End with multipart boundary.
sos.println();
sos.println("--" + MULTIPART_BOUNDARY + "--");
}
}
}
private static class Range {
long start;
long end;
long length;
long total;
/**
* Construct a byte range.
*
* #param start Start of the byte range.
* #param end End of the byte range.
* #param total Total length of the byte source.
*/
public Range(long start, long end, long total) {
this.start = start;
this.end = end;
this.length = end - start + 1;
this.total = total;
}
public static long sublong(String value, int beginIndex, int endIndex) {
String substring = value.substring(beginIndex, endIndex);
return (substring.length() > 0) ? Long.parseLong(substring) : -1;
}
private static void copy(InputStream input, OutputStream output, long inputSize, long start, long length) throws IOException {
byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
int read;
if (inputSize == length) {
// Write full range.
while ((read = input.read(buffer)) > 0) {
output.write(buffer, 0, read);
output.flush();
}
} else {
input.skip(start);
long toRead = length;
while ((read = input.read(buffer)) > 0) {
if ((toRead -= read) > 0) {
output.write(buffer, 0, read);
output.flush();
} else {
output.write(buffer, 0, (int) toRead + read);
output.flush();
break;
}
}
}
}
}
private static class HttpUtils {
/**
* Returns true if the given accept header accepts the given value.
*
* #param acceptHeader The accept header.
* #param toAccept The value to be accepted.
* #return True if the given accept header accepts the given value.
*/
public static boolean accepts(String acceptHeader, String toAccept) {
String[] acceptValues = acceptHeader.split("\\s*(,|;)\\s*");
Arrays.sort(acceptValues);
return Arrays.binarySearch(acceptValues, toAccept) > -1
|| Arrays.binarySearch(acceptValues, toAccept.replaceAll("/.*$", "/*")) > -1
|| Arrays.binarySearch(acceptValues, "*/*") > -1;
}
/**
* Returns true if the given match header matches the given value.
*
* #param matchHeader The match header.
* #param toMatch The value to be matched.
* #return True if the given match header matches the given value.
*/
public static boolean matches(String matchHeader, String toMatch) {
String[] matchValues = matchHeader.split("\\s*,\\s*");
Arrays.sort(matchValues);
return Arrays.binarySearch(matchValues, toMatch) > -1
|| Arrays.binarySearch(matchValues, "*") > -1;
}
} }
use is in your controller and make sure you are not use #RestController
you should use #Controller, and following class in void method
#RequestMapping(method = RequestMethod.GET, value = "/getFile")
public void getFile(HttpServletRequest httpRequest, HttpServletResponse httpResponse) throws Exception {
MultipartFileSender.fromPath(Paths.get("D:\8561523973120206.mp4"))
.with(httpRequest)
.with(httpResponse)
.serveResource();
}

Related

How to write Modem Drivers for non-subnero modems?

How can i use the existing modems which is not subnero with UnetStack (basically is not support UnetStack natively) ? I was gone through the post in detailed, but unfortunately had bad compilation issues. Can anyone point me to right direction ?
Below is the detailed error i encountered:
BUG! exception in phase 'semantic analysis' in source unit 'Script66.groovy' The lookup for MyModemDriver caused a failed compilation. There should not have been any compilation from this call.
Here is my code:
import org.arl.fjage.*
import org.arl.unet.*
import com.fazecast.jSerialComm.*
import org.arl.unet.api.UnetSocket
import org.arl.unet.phy.RxFrameNtf
import org.arl.unet.phy.TxFrameNtf
class PopotoModemDriver extends UnetAgent {
// Using UnetSocket to connect to network modem ('ip',port)
def sock = UnetSocket('192.168.0.42', 1100)
AgentID notify // notification topic
int plvl = 170 // default power level setting
#Override
void setup() {
notify = topic()
register Services.PHYSICAL
register Services.DATAGRAM
}
#Override
void shutdown() {
sock.close()
}
#Override
Message processRequest(Message req) {
if (req instanceof DatagramReq) {
String s = "AT+TX:" + req.to + "," + req.data.encodeHex() + "\n"
byte[] b = s.getBytes()
sock.writeBytes(b, b.length)
add new OneShotBehavior({
send new TxFrameNtf(req)
})
return new Message(req, Performative.AGREE)
}
return null
}
int getMTU() {
return 32 // frame size
}
boolean getRxEnable() {
return true
}
float getPropagationSpeed() {
return 1500 // assume sound speed is 1500 m/s
}
int getTimestampedTxDelay() {
return 0 // our modem doesn't support timestamped transmissions
}
long getTime() {
return 1000*System.currentTimeMillis() // use system clock for timing in µs
}
boolean getBusy() {
return false
}
float getRefPowerLevel() {
return 0 // our modem uses absolute power levels in dB re uPa # 1m
}
float getMaxPowerLevel() {
return 180 // our modem can transmit at max power level of 180 dB
}
float getMinPowerLevel() {
return 120 // ... and a min power level of 120 dB
}
int getMTU(int ch) {
return 32 // frame size
}
float getFrameDuration(int ch) {
return getMTU(ch)/getDataRate(ch)
}
float getPowerLevel(int ch) {
return plvl
}
int getErrorDetection(int ch) {
return 0
}
int getFrameLength(int ch) {
return getMTU(ch) // fixed frame size
}
int getMaxFrameLength(int ch) {
return getMTU(ch) // fixed frame size
}
int getFec(int ch) {
return 0
}
List getFecList(int ch) {
return null
}
float getDataRate(int ch) {
return 320.0 // data rate of 320 bps
}
float setPowerLevel(int ch, float x) {
plvl = x
if (plvl < getMinPowerLevel()) plvl = getMinPowerLevel()
if (plvl > getMaxPowerLevel()) plvl = getMaxPowerLevel()
String s = "AT+TPL:" + plvl + "\n"
byte[] b = s.getBytes()
sock.writeBytes(b, b.length)
return plvl
}
#Override
void startup() {
sock.openPort()
add new CyclicBehavior({
int n = sock.bytesAvailable()
if (n == 0) Thread.sleep(20)
else {
// data available
byte[] buf = new byte[n]
sock.readBytes(buf, n)
parseRxData(new String(buf))
}
})
}
String data = ''
void parseRxData(String s) {
data += s
int n = data.indexOf('\n')
if (n < 0) return
s = data.substring(0, n)
data = data.substring(n)
if (s.startsWith("AT+RX:")) {
int addr = s.substring(6,9) as int
byte[] bytes = s.substring(10).decodeHex()
send new RxFrameNtf(
recipient: notify,
from: addr,
data: bytes,
bits: 8*bytes.length,
rxTime: 1000*System.currentTimeMillis()
)
}
}
}
#manuignatius is right, Groovy complains about this when there is a syntax error in a dynamically loaded Groovy class.
To get a more detailed stack trace on the error, you can manually invoke the Groovy compiler. Set your CLASSPATH environment variable to include all the jars in the lib folder in your local UnetStack installation. Then simply run groovyc MyModemDriver.groovy, and it should show you compilation errors, if any. The compiled .class file that is produced on successful compilation can then be copied to the classes folder in UnetStack/modem instead of the source code.

Crawler4j With Grails App

I am making a crawler application in Groovy on Grails. I am using Crawler4j and following this tutorial.
I created a new grails project
Put the BasicCrawlController.groovy file in controllers->package
Did not create any view because I expected on doing run-app, my crawled data would appear in my crawlStorageFolder (please correct me if my understanding is flawed)
After that I just ran the application by doing run-app but I didn't see any crawling data anywhere.
Am I right in expecting some file to be created at the crawlStorageFolder location that I have given as C:/crawl/crawler4jStorage?
Do I need to create any view for this?
If I want to invoke this crawler controller from some other view on click of a submit button of a form, can I just write <g:form name="submitWebsite" url="[controller:'BasicCrawlController ']">?
I asked this because I do not have any method in this controller, so is it the right way to invoke this controller?
My code is as follows:
//All necessary imports
public class BasicCrawlController {
static main(args) throws Exception {
String crawlStorageFolder = "C:/crawl/crawler4jStorage";
int numberOfCrawlers = 1;
//int maxDepthOfCrawling = -1; default
CrawlConfig config = new CrawlConfig();
config.setCrawlStorageFolder(crawlStorageFolder);
config.setPolitenessDelay(1000);
config.setMaxPagesToFetch(100);
config.setResumableCrawling(false);
PageFetcher pageFetcher = new PageFetcher(config);
RobotstxtConfig robotstxtConfig = new RobotstxtConfig();
RobotstxtServer robotstxtServer = new RobotstxtServer(robotstxtConfig, pageFetcher);
CrawlController controller = new CrawlController(config, pageFetcher, robotstxtServer);
controller.addSeed("http://en.wikipedia.org/wiki/Web_crawler")
controller.start(BasicCrawler.class, 1);
}
}
class BasicCrawler extends WebCrawler {
final static Pattern FILTERS = Pattern
.compile(".*(\\.(css|js|bmp|gif|jpe?g"+ "|png|tiff?|mid|mp2|mp3|mp4" +
"|wav|avi|mov|mpeg|ram|m4v|pdf" +"|rm|smil|wmv|swf|wma|zip|rar|gz))\$")
/**
* You should implement this function to specify whether the given url
* should be crawled or not (based on your crawling logic).
*/
#Override
boolean shouldVisit(WebURL url) {
String href = url.getURL().toLowerCase()
!FILTERS.matcher(href).matches() && href.startsWith("http://en.wikipedia.org/wiki/Web_crawler/")
}
/**
* This function is called when a page is fetched and ready to be processed
* by your program.
*/
#Override
void visit(Page page) {
int docid = page.getWebURL().getDocid()
String url = page.getWebURL().getURL()
String domain = page.getWebURL().getDomain()
String path = page.getWebURL().getPath()
String subDomain = page.getWebURL().getSubDomain()
String parentUrl = page.getWebURL().getParentUrl()
String anchor = page.getWebURL().getAnchor()
println("Docid: ${docid} ")
println("URL: ${url} ")
println("Domain: '${domain}'")
println("Sub-domain: ' ${subDomain}'")
println("Path: '${path}'")
println("Parent page:${parentUrl} ")
println("Anchor text: ${anchor} " )
if (page.getParseData() instanceof HtmlParseData) {
HtmlParseData htmlParseData = (HtmlParseData) page.getParseData()
String text = htmlParseData.getText()
String html = htmlParseData.getHtml()
List<WebURL> links = htmlParseData.getOutgoingUrls()
println("Text length: " + text.length())
println("Html length: " + html.length())
println("Number of outgoing links: " + links.size())
}
Header[] responseHeaders = page.getFetchResponseHeaders()
if (responseHeaders != null) {
println("Response headers:")
for (Header header : responseHeaders) {
println("\t ${header.getName()} : ${header.getValue()}")
}
}
println("=============")
}
}
I'll try to translate your code into a Grails standard.
Use this under grails-app/controller
class BasicCrawlController {
def index() {
String crawlStorageFolder = "C:/crawl/crawler4jStorage";
int numberOfCrawlers = 1;
//int maxDepthOfCrawling = -1; default
CrawlConfig crawlConfig = new CrawlConfig();
crawlConfig.setCrawlStorageFolder(crawlStorageFolder);
crawlConfig.setPolitenessDelay(1000);
crawlConfig.setMaxPagesToFetch(100);
crawlConfig.setResumableCrawling(false);
PageFetcher pageFetcher = new PageFetcher(crawlConfig);
RobotstxtConfig robotstxtConfig = new RobotstxtConfig();
RobotstxtServer robotstxtServer = new RobotstxtServer(robotstxtConfig, pageFetcher);
CrawlController controller = new CrawlController(crawlConfig, pageFetcher, robotstxtServer);
controller.addSeed("http://en.wikipedia.org/wiki/Web_crawler")
controller.start(BasicCrawler.class, 1);
render "done crawling"
}
}
Use this under src/groovy
class BasicCrawler extends WebCrawler {
final static Pattern FILTERS = Pattern
.compile(".*(\\.(css|js|bmp|gif|jpe?g"+ "|png|tiff?|mid|mp2|mp3|mp4" +
"|wav|avi|mov|mpeg|ram|m4v|pdf" +"|rm|smil|wmv|swf|wma|zip|rar|gz))\$")
/**
* You should implement this function to specify whether the given url
* should be crawled or not (based on your crawling logic).
*/
#Override
boolean shouldVisit(WebURL url) {
String href = url.getURL().toLowerCase()
!FILTERS.matcher(href).matches() && href.startsWith("http://en.wikipedia.org/wiki/Web_crawler/")
}
/**
* This function is called when a page is fetched and ready to be processed
* by your program.
*/
#Override
void visit(Page page) {
int docid = page.getWebURL().getDocid()
String url = page.getWebURL().getURL()
String domain = page.getWebURL().getDomain()
String path = page.getWebURL().getPath()
String subDomain = page.getWebURL().getSubDomain()
String parentUrl = page.getWebURL().getParentUrl()
String anchor = page.getWebURL().getAnchor()
println("Docid: ${docid} ")
println("URL: ${url} ")
println("Domain: '${domain}'")
println("Sub-domain: ' ${subDomain}'")
println("Path: '${path}'")
println("Parent page:${parentUrl} ")
println("Anchor text: ${anchor} " )
if (page.getParseData() instanceof HtmlParseData) {
HtmlParseData htmlParseData = (HtmlParseData) page.getParseData()
String text = htmlParseData.getText()
String html = htmlParseData.getHtml()
List<WebURL> links = htmlParseData.getOutgoingUrls()
println("Text length: " + text.length())
println("Html length: " + html.length())
println("Number of outgoing links: " + links.size())
}
Header[] responseHeaders = page.getFetchResponseHeaders()
if (responseHeaders != null) {
println("Response headers:")
for (Header header : responseHeaders) {
println("\t ${header.getName()} : ${header.getValue()}")
}
}
println("=============")
}
}

IOException Radio is off, and Out of memory, on BlackBerry

I am performing HttpConnection in my RIM Blackberry application. I am using wi-fi connection. While performing HttpConnection sometimes it is returning data, sometimes it is giving
java.io.IOException Radio is off
and
java.io.IOException Out of memory
errors. I really do not understand what is the issue exactly. I am posting here my code snippets:
public static String getRemoteData(String url) throws ConnectionNotFoundException{
StringBuffer stringBuff=new StringBuffer();
try {
HttpConnection fconImg = (HttpConnection) Connector.open(url+ NetworkUtils.getConnectionString());
InputStream input = fconImg.openInputStream();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int k = 0;
while ((k = input.read()) != -1) {
baos.write(k);
}
byte[] byteArray = baos.toByteArray();
String s = new String(byteArray);
stringBuff.append(s.trim());
return stringBuff.toString();
} catch (Exception e) {
stringBuff.append("Exception : "+e.toString());
return stringBuff.toString();
}
}
And below is my NetworkUtils Class.
import net.rim.device.api.servicebook.ServiceBook;
import net.rim.device.api.servicebook.ServiceRecord;
import net.rim.device.api.system.CoverageInfo;
import net.rim.device.api.system.DeviceInfo;
import net.rim.device.api.system.RadioInfo;
import net.rim.device.api.system.WLANInfo;
public class NetworkUtils {
private static final String COVERAGE_CARRIER = "Carrier full Coverage";
private static final String COVERAGE_MDS = "BES coverage";
private static final String COVERAGE_NONE = "No coverage";
private static final String NOT_SUPPORTED_WAF = "Not supported by the device";
public static String logM;
/**
* Access the net.rim.device.api.system.DeviceInfo class in order to
* understand if the running system is a simulator or a real device.
* #return true if the current application is running on a Blackberry
* simulator, false otherwise
*/
public static boolean isSimulator() {
return DeviceInfo.isSimulator();
}
/**
* Give the information about the presence o a wifi bearer on the device
* #return true if the wifi communication interface bearer is supported by
* the device, false otherwise
*/
protected static boolean isWifiAvailable() {
// Log.info("Checking WIFI Availability");
boolean isWifiEnabled;
if (RadioInfo.areWAFsSupported(RadioInfo.WAF_WLAN)) {
// Log.info("WIFI Supported");
isWifiEnabled = true;
} else {
// Log.info("WIFI NOT Supported");
isWifiEnabled = false;
}
return isWifiEnabled;
}
/**
* Give information about the presence of active wifi connections.
* #return true if the device is connected to a wifi network with its wifi
* bearer, false otherwise
*/
protected static boolean isWifiActive() {
int active = RadioInfo.getActiveWAFs();
int wifi = RadioInfo.WAF_WLAN;
return active >= wifi;
}
protected static boolean isWapGprsDataBearerOffline() {
return RadioInfo.getState()==RadioInfo.STATE_OFF ||
RadioInfo.getSignalLevel() == RadioInfo.LEVEL_NO_COVERAGE;
}
public static String getNetworkCoverageReport() {
StringBuffer sb = new StringBuffer();
sb.append("\n*********************************************************");
sb.append("\nWireless Access Families:");
sb.append("\n3GPP: " + getNetworkCoverage(RadioInfo.WAF_3GPP));
sb.append("\nCDMA: " + getNetworkCoverage(RadioInfo.WAF_CDMA));
sb.append("\nWLAN: " + getNetworkCoverage(RadioInfo.WAF_WLAN));
sb.append("\nCDMA: " + getNetworkCoverage(RadioInfo.NETWORK_CDMA));
sb.append("\nBands:");
sb.append("\nCDMA_800: " + getNetworkCoverage(RadioInfo.BAND_CDMA_800));
sb.append("\nCDMA_1900: " + getNetworkCoverage(RadioInfo.BAND_CDMA_1900));
sb.append("\nNetworks:");
sb.append("\n802_11: " + getNetworkCoverage(RadioInfo.NETWORK_802_11));
sb.append("\nGPRS: " + getNetworkCoverage(RadioInfo.NETWORK_GPRS));
sb.append("\nNetwork services:");
sb.append("\nVOICE: " + getNetworkCoverage(RadioInfo.NETWORK_SERVICE_VOICE));
sb.append("\nUMTS: " + getNetworkCoverage(RadioInfo.NETWORK_SERVICE_UMTS));
sb.append("\nEDGE: " + getNetworkCoverage(RadioInfo.NETWORK_SERVICE_EDGE));
sb.append("\n*********************************************************");
return sb.toString();
}
private static String getNetworkCoverage(int networkType) {
if (RadioInfo.areWAFsSupported(networkType)) {
int status = CoverageInfo.getCoverageStatus(networkType, false);
switch (status) {
// case CoverageInfo.COVERAGE_DIRECT: //TODO if we switch back to < 4.5 we must use CARRIER
// return COVERAGE_CARRIER;//not support less ver of 4.5
case CoverageInfo.COVERAGE_MDS:
return COVERAGE_MDS;
case CoverageInfo.COVERAGE_NONE:
return COVERAGE_NONE;
default:
break;
}
}
return NOT_SUPPORTED_WAF;
}
public static boolean isDataConnectionAvailable() {
boolean ret = (isWifiAvailable()&&isWifiActive())||!isWapGprsDataBearerOffline();
return ret;
}
/**
* Determines what connection type to use and returns the necessary string to use it.
* #return A string with the connection info
*/
public static String getSubURL()
{
// This code is based on the connection code developed by Mike Nelson of AccelGolf.
// http://blog.accelgolf.com/2009/05/22/blackberry-cross-carrier-and-cross-network-http-connection
String connectionString = null;
// Simulator behavior is controlled by the USE_MDS_IN_SIMULATOR variable.
if(DeviceInfo.isSimulator())
{
logMessage("Device is a simulator and USE_MDS_IN_SIMULATOR is false");
connectionString = ";deviceside=true";
}
// Wifi is the preferred transmission method
else if(WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED)
{
logMessage("Device is connected via Wifi.");
connectionString = ";interface=wifi";
}else{
String uid = null;
ServiceBook sb = ServiceBook.getSB();
ServiceRecord[] records = sb.findRecordsByCid("WPTCP");
for (int i = 0; i < records.length; i++) {
if (records[i].isValid() && !records[i].isDisabled()) {
if (records[i].getUid() != null &&
records[i].getUid().length() != 0) {
if ((records[i].getCid().toLowerCase().indexOf("wptcp") != -1) &&
(records[i].getUid().toLowerCase().indexOf("wifi") == -1) &&
(records[i].getUid().toLowerCase().indexOf("mms") == -1) ) {
uid = records[i].getUid();
break;
}
}
}
}
if (uid != null) {
// WAP2 Connection
connectionString = ";ConnectionUID="+uid;
} else {
connectionString = ";deviceside=true";
}
}
return connectionString + ";ConnectionTimeout=60000";
}
/**
* Looks through the phone's service book for a carrier provided BIBS network
* #return The uid used to connect to that network.
*/
private static String getCarrierBIBSUid()
{
ServiceRecord[] records = ServiceBook.getSB().getRecords();
int currentRecord;
for(currentRecord = 0; currentRecord < records.length; currentRecord++)
{
if(records[currentRecord].getCid().toLowerCase().equals("ippp"))
{
if(records[currentRecord].getName().toLowerCase().indexOf("bibs") >= 0)
{
return records[currentRecord].getUid();
}
}
}
return null;
}
public static void logMessage(String str)
{
logM=str;
}
public synchronized static String getConnectionString() {
String connectionString = null;
// Simulator behaviour is controlled by the USE_MDS_IN_SIMULATOR variable.
if (DeviceInfo.isSimulator()) {
connectionString = ";deviceside=true";
}
// Wifi is the preferred transmission method
else if (WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED) {
connectionString = ";interface=wifi";
}
// Is the carrier network the only way to connect?
else if ((CoverageInfo.getCoverageStatus() & CoverageInfo.COVERAGE_DIRECT) == CoverageInfo.COVERAGE_DIRECT) {
String carrierUid = getCarrierBIBSUid();
if (carrierUid == null) {
// Has carrier coverage, but not BIBS. So use the carrier's TCP network
connectionString = ";deviceside=true";
} else {
// otherwise, use the Uid to construct a valid carrier BIBS request
connectionString = ";deviceside=false;connectionUID="+carrierUid + ";ConnectionType=mds-public";
}
}
// Check for an MDS connection instead (BlackBerry Enterprise Server)
else if ((CoverageInfo.getCoverageStatus() & CoverageInfo.COVERAGE_MDS) == CoverageInfo.COVERAGE_MDS) {
connectionString = ";deviceside=false";
}
// If there is no connection available abort to avoid hassling the user
// unnecssarily.
else if (CoverageInfo.getCoverageStatus() == CoverageInfo.COVERAGE_NONE) {
connectionString = "none";
}
// In theory, all bases are covered by now so this shouldn't be reachable.But hey, just in case ...
else {
connectionString = ";deviceside=true";
}
return connectionString;
}
}
Thanks very much in advance....
I don't know if it's the problem but you are not closing your ByteArrayOutputStream (call baos.close() ) before calling .toByteArray()

Issues with Crypto.generateMac() in SalesForce APEX

We need to make a few callouts to a service that is using OAuth 1.0 and requires each request to be signed with HMAC-SHA1.
The service doesn't have any APEX client API. Thus, we have to do it manually.
Unfortunately,
EncodingUtil.base64Encode(Crypto.generateMac('hmacSHA1', Blob.valueOf(data), Blob.valueOf(key)));
returns a different string from what we expect. We have compared the output for the same input with libraries for other languages. And the output was different.
I have no problems calling out to OAuth 1.0. Here's some sample Apex for signing your request:
EDIT: Added additional code
private Map<String,String> getUrlParams(String value)
{
Map<String,String> res = new Map<String,String>();
if(value==null || value=='')
{
return res;
}
for(String s : value.split('&'))
{
List<String> kv = s.split('=');
if(kv.size()>1)
{
res.put(kv[0],kv[1]);
}
}
return res;
}
private String createBaseString(Map<String,String> oauthParams, HttpRequest req)
{
Map<String,String> p = oauthParams.clone();
if(req.getMethod().equalsIgnoreCase('post') && req.getBody()!=null && req.getHeader('Content-Type')=='application/x-www-form-urlencoded')
p.putAll(getUrlParams(req.getBody()));
String host = req.getEndpoint();
Integer n = host.indexOf('?');
if(n > -1)
{
p.putAll(getUrlParams(host.substring(n+1)));
host = host.substring(0,n);
}
List<String> keys = new List<String>();
keys.addAll(p.keySet());
keys.sort();
String s = keys.get(0)+'='+p.get(keys.get(0));
for(Integer i=1; i<keys.size(); i++)
s = s + '&' + keys.get(i) + '=' + p.get(keys.get(i));
return req.getMethod().toUpperCase() + '&' + EncodingUtil.urlEncode(host, 'UTF-8') + '&' + EncodingUtil.urlEncode(s, 'UTF-8');
}
public void sign(HttpRequest req)
{
nonce = String.valueOf(Crypto.getRandomLong());
timestamp = String.valueOf(DateTime.now().getTime() / 1000);
refreshParameters();
String s = createBaseString(parameters, req);
Blob sig = Crypto.generateMac('HmacSHA1', Blob.valueOf(s),
Blob.valueOf(consumerSecret+'&'+ (tokenSecret!=null ? tokenSecret : '')));
signature = EncodingUtil.urlEncode(EncodingUtil.base64encode(sig), 'UTF-8');
String header = 'OAuth ';
for (String key : parameters.keySet())
{
header = header + key + '="'+parameters.get(key)+'", ';
}
header = header + 'oauth_signature="'+signature+'"';
req.setHeader('Authorization',header);
}
This might be reaching, but could there be a case-sensitivity issue? Notice I'm calling 'HmacSHA1' not 'hmacSHA1'

What is correct way to implement the HTTPConnection in Blackberry

I tired to connect my app with the remote server and pass few credentials to it, but i am always getting a same response from the server. I tried changing all the parameter value and other request header values that i am passing, but still i can't reach the exact solution. I need to you, whether am i using the correct way to ping with the server and to pass the values.
Below is the code that i am using , Please let me know if i have gone wrong somewhere.
// HttpServiceConnection.java
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import javax.microedition.io.HttpsConnection;
import net.rim.device.api.system.DeviceInfo;
import com.beacon.bb.app.util.WSMConfig;
/**
* #author N********
*
*/
public class HttpServiceCommunication {
public HttpServiceCommunication() {
System.out.println("Http Service Communication Called");
}
public String sendHttpPost(String uri, String email, String uid,
String pass) throws Exception { // Hashtable header
String response = null;
// create the connection...
System.out.println("Url    " + uri);
HttpConnection _connection = null;
String params = null;
if (DeviceInfo.isSimulator()) {
params = ";deviceside=false";
} else {
params = ";deviceside=true;interface=wifi";
}
String URL = uri + params;
System.out.println("Connecting to Http Connection ");
try {
_connection = (HttpConnection) Connector.open(URL);
} catch(Exception e){
e.printStackTrace();
}
if (_connection != null) {
_connection.setRequestMethod(HttpConnection.POST);
System.out.println("After Request Method ");
_connection.setRequestProperty("User-Agent",
"Profile/MIDP-2.0 Configuration/CLDC-1.1");
_connection.setRequestProperty("Content-Language", "en-US");
_connection.setRequestProperty("Content-type", "application/json");
// setting header if any
// if (header != null) {
// for (Enumeration en = header.keys(); en.hasMoreElements();) {
// String key = (String) en.nextElement();
// String value = (String) header.get(key);
// _connection.setRequestProperty(key, value);
_connection.setRequestProperty("email", email);
//_connection.setRequestProperty("method","login");
_connection.setRequestProperty("uid", uid);
_connection.setRequestProperty("password", pass);
//_connection.setRequestProperty("uid", uid);
// }
// }
System.out.println("Open Output Stream  ");
// System.out.println("Data is     "+data);
OutputStream _outputStream = _connection.openOutputStream();
//System.out.println("Writing data  ");
//_outputStream.write(data);
// _outputStream.flush(); // Optional, getResponseCode will flush
// Getting the response code will open the connection, send the
// request, and read the HTTP response headers.
// The headers are stored until requested.
try {
System.out.println("Response Code :" + _connection.getResponseCode());
int rc = _connection.getResponseCode();
System.out.println("Response Code :" + rc);
System.out.println("Response Code   :" + rc + " if HTTP OK    :"
+ (rc == HttpConnection.HTTP_OK));
if (rc == HttpConnection.HTTP_FORBIDDEN) {
System.out.println("FORBIDDEN");
response = WSMConfig.NOT_AUTH;
} else if (rc != HttpConnection.HTTP_OK) {
response = WSMConfig.NOT_OK;
} else if (rc == HttpConnection.HTTP_OK) {
InputStream _inputStream = _connection.openInputStream();
final int MAX_LENGTH = 128;
byte[] buf = new byte[MAX_LENGTH];
int total = 0;
while (total < MAX_LENGTH) {
int count = _inputStream.read(buf, total, MAX_LENGTH
- total);
if (count < 0) {
break;
}
total += count;
}
response = new String(buf, 0, total);
//ByteBuffer bb = new ByteBuffer(_inputStream);
//response = bb.getString();
System.out.println("Response from Server   :" + response);
// close everything out
{
if (_inputStream != null)
try {
_inputStream.close();
} catch (Exception e) {
}
if (_outputStream != null)
try {
_outputStream.close();
} catch (Exception e) {
}
if (_connection != null)
try {
_connection.close();
} catch (Exception e) {
}
}
}
else {
response = WSMConfig.SERVER_ERROR;
}
}catch(Exception e){
e.printStackTrace();
}
}
//System.out.println("Response :" + response);
return response;
}
}
I am getting a response like {"code":0,"err":"Missing 'method'."}
Any Help is Appreciable....
Thanks
Try this out when you're wanting to pass data to the server:
//encode your data to send
URLEncodedPostData encoder = new URLEncodedPostData(null, false);
encoder.encode("email", email);
encoder.encode("method", "login");
encoder.encode("uid", uid);
encoder.encode("password", pass);
//Now you open up an output stream to write to the connection
OutputStream os = _connection.openOutputStream();
os.write(encoder.getBytes();
os.flush();
And then continue with the rest of your logic

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