Thrift HTTP client in C++
Reviewed By: aditya, dweatherford
Test Plan: SMC client
git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665022 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/transport/THttpClient.h b/lib/cpp/src/transport/THttpClient.h
new file mode 100644
index 0000000..e7f88c9
--- /dev/null
+++ b/lib/cpp/src/transport/THttpClient.h
@@ -0,0 +1,88 @@
+#ifndef _THRIFT_TRANSPORT_THTTPCLIENT_H_
+#define _THRIFT_TRANSPORT_THTTPCLIENT_H_ 1
+
+#include <transport/TTransportUtils.h>
+
+namespace facebook { namespace thrift { namespace transport {
+
+/**
+ * HTTP client implementation of the thrift transport. This was irritating
+ * to write, but the alternatives in C++ land are daunting. Linking CURL
+ * requires 23 dynamic libraries last time I checked (WTF?!?). All we have
+ * here is a VERY basic HTTP/1.1 client which supports HTTP 100 Continue,
+ * chunked transfer encoding, keepalive, etc. Tested against Apache.
+ *
+ * @author Mark Slee <mcslee@facebook.com>
+ */
+class THttpClient : public TTransport {
+ public:
+ THttpClient(boost::shared_ptr<TTransport> transport, std::string host, std::string path="");
+
+ THttpClient(std::string host, int port, std::string path="");
+
+ virtual ~THttpClient();
+
+ void open() {
+ transport_->open();
+ }
+
+ bool isOpen() {
+ return transport_->isOpen();
+ }
+
+ bool peek() {
+ return transport_->peek();
+ }
+
+ void close() {
+ transport_->close();
+ }
+
+ uint32_t read(uint8_t* buf, uint32_t len);
+
+ void write(const uint8_t* buf, uint32_t len);
+
+ void flush();
+
+ private:
+ void init();
+
+ protected:
+
+ boost::shared_ptr<TTransport> transport_;
+
+ TMemoryBuffer writeBuffer_;
+ TMemoryBuffer readBuffer_;
+
+ std::string host_;
+ std::string path_;
+
+ bool readHeaders_;
+ bool chunked_;
+ uint32_t chunkSize_;
+ uint32_t contentLength_;
+
+ char* httpBuf_;
+ uint32_t httpBufPos_;
+ uint32_t httpBufSize_;
+
+ uint32_t readMoreData();
+ char* readLine(char* line);
+
+ void readHeaders();
+ void parseHeader(char* header);
+ bool parseStatusLine(char* status);
+
+ uint32_t readChunked();
+ uint32_t parseChunkSize(char* line);
+
+ char* readContent(char* pos, uint32_t size);
+
+ void refill();
+ char* shift(char* pos);
+
+};
+
+}}} // facebook::thrift::transport
+
+#endif // #ifndef _THRIFT_TRANSPORT_THTTPCLIENT_H_