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(PHP ActiveX) (using AWS Signature Version 2) Streaming Download to FileThe main purpose of this example is to demonstrate how to use the older Signature Version 2 authentication w/ S3. It uses V2 authentication to download a file.
<?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; // The file is located in the bucket named "chilkat100", which becomes part of the domain: $success = $rest->Connect('chilkat100.s3.amazonaws.com',$port,$bTls,$bAutoReconnect); // 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'; // For AWS Signature Version 2, the following two properties need to be set: $authAws->SignatureVersion = 2; // See http://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthentication.html#ConstructingTheCanonicalizedResourceElement $authAws->CanonicalizedResourceV2 = '/chilkat100/starfish.jpg'; $success = $rest->SetAuthAws($authAws); // 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) { // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Stream') $bodyStream = new COM("Chilkat.Stream"); // The stream's sink will be a file. $bodyStream->SinkFile = 'qa_output/starfish.jpg'; // Read the response body to the stream. Given that we've // set the stream's sink to a file, it will stream directly // to the file. $success = $rest->ReadRespBodyStream($bodyStream,1); if ($success != 1) { print $rest->LastErrorText . "\n"; exit; } print 'Successfully received the JPG file.' . "\n"; } else { $errResponse = $rest->readRespBodyString(); if ($rest->LastMethodSuccess != 1) { print $rest->LastErrorText . "\n"; } else { print $errResponse . "\n"; } } ?> |
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