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(PHP ActiveX) REST Read Response with Stream APIDemonstrates how to make a REST call that returns a binary body, and to receive the body through a stream API.
<?php // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Rest') $rest = new COM("Chilkat.Rest"); // Connect to the Amazon AWS REST server. $bTls = 1; $port = 443; $bAutoReconnect = 1; $success = $rest->Connect('s3.amazonaws.com',$port,$bTls,$bAutoReconnect); // ---------------------------------------------------------------------------- // Important: For buckets created in regions outside us-east-1, // there are three important changes that need to be made. // See Working with S3 Buckets in Non-us-east-1 Regions for the details. // ---------------------------------------------------------------------------- // Provide AWS credentials for the REST call. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.AuthAws') $authAws = new COM("Chilkat.AuthAws"); $authAws->AccessKey = 'AWS_ACCESS_KEY'; $authAws->SecretKey = 'AWS_SECRET_KEY'; $authAws->ServiceName = 's3'; $success = $rest->SetAuthAws($authAws); // Set the bucket name via the HOST header. // In this case, the bucket name is "chilkat100". $rest->Host = 'chilkat100.s3.amazonaws.com'; // Send the request to download the JPG. $success = $rest->SendReqNoBody('GET','/starfish.jpg'); if ($success != 1) { print $rest->LastErrorText . "\n"; exit; } // Read the response header. $responseStatusCode = $rest->ReadResponseHeader(); if ($responseStatusCode < 0) { print $rest->LastErrorText . "\n"; exit; } print 'Response status code = ' . $responseStatusCode . "\n"; // We expect a 200 response status if the JPG data is coming. // Otherwise, we'll get a string response body with an error message(or no response body). if ($responseStatusCode != 200) { $errResponse = $rest->readRespBodyString(); if ($rest->LastMethodSuccess != 1) { print $rest->LastErrorText . "\n"; } else { print $errResponse . "\n"; } exit; } // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Stream') $bodyStream = new COM("Chilkat.Stream"); // Set a 10 second read timeout for the stream. // (Give up if no data arrives within 10 seconds after calling a read method.) $bodyStream->ReadTimeoutMs = 10000; // Create a background thread task to read the response body (which feeds // it to the bodyStream object.) // readResponseBodyTask is a Chilkat.Task $readResponseBodyTask = $rest->ReadRespBodyStreamAsync($bodyStream,1); // Start the task. $success = $readResponseBodyTask->Run(); // The application can now read the bodyStream... while (($bodyStream->EndOfStream != 1)) { // Read the next chunk of bytes (whatever is immediately available, // or wait for more data (up to 10 seconds because we set the stream's ReadTimeoutMs property) $nextChunk = $bodyStream->ReadBytes(); if ($bodyStream->LastMethodSuccess != 1) { print 'Failed to receive more response data.' . "\n"; // Make sure the background task is aborted/cancelled. $success = $readResponseBodyTask->Cancel(); exit; } // OK.. the app has the next chunk of the body, and may do whatever it wishes with it... } print 'Successfully received the entire response body.' . "\n"; ?> |
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