Diff: HTTPClient.h

Revision:

0:7aca7353eebf

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HTTPClient.h	Fri Jul 06 10:22:15 2012 +0000
@@ -0,0 +1,142 @@
+/* HTTPClient.h */
+/*
+Copyright (C) 2012 ARM Limited.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+/** \file
+HTTP Client header file
+*/
+
+#ifndef HTTP_CLIENT_H
+#define HTTP_CLIENT_H
+
+#include "api/socket.h"
+
+#define HTTP_CLIENT_DEFAULT_TIMEOUT 4000
+
+class HTTPData;
+
+#include "IHTTPData.h"
+#include "mbed.h"
+
+///HTTP client results
+enum HTTPResult
+{
+  HTTP_OK, ///<Success
+  HTTP_PROCESSING, ///<Processing
+  HTTP_PARSE, ///<url Parse error
+  HTTP_DNS, ///<Could not resolve name
+  HTTP_PRTCL, ///<Protocol error
+  HTTP_NOTFOUND, ///<HTTP 404 Error
+  HTTP_REFUSED, ///<HTTP 403 Error
+  HTTP_ERROR, ///<HTTP xxx error
+  HTTP_TIMEOUT, ///<Connection timeout
+  HTTP_CONN ///<Connection error
+};
+
+/**A simple HTTP Client
+The HTTPClient is composed of:
+- The actual client (HTTPClient)
+- Classes that act as a data repository, each of which deriving from the HTTPData class (HTTPText for short text content, HTTPFile for file I/O, HTTPMap for key/value pairs, and HTTPStream for streaming purposes)
+*/
+class HTTPClient
+{
+public:
+  ///Instantiate the HTTP client
+  HTTPClient();
+  ~HTTPClient();
+  
+#if 0 //TODO add header handlers
+  /**
+  Provides a basic authentification feature (Base64 encoded username and password)
+  Pass two NULL pointers to switch back to no authentication
+  @param user username to use for authentication, must remain valid durlng the whole HTTP session
+  @param user password to use for authentication, must remain valid durlng the whole HTTP session
+  */
+  void basicAuth(const char* user, const char* password); //Basic Authentification
+#endif
+  
+  //High Level setup functions
+  /** Execute a GET request on the url
+  Blocks until completion
+  @param url : url on which to execute the request
+  @param pDataIn : pointer to an IHTTPDataIn instance that will collect the data returned by the request, can be NULL
+  @param timeout waiting timeout in ms (osWaitForever for blocking function, not recommended)
+  @return 0 on success, NET error (<0) on failure
+  */
+  int get(const char* url, IHTTPDataIn* pDataIn, uint32_t timeout = HTTP_CLIENT_DEFAULT_TIMEOUT); //Blocking
+  
+  /** Execute a GET request on the url
+  Blocks until completion
+  This is a helper to directly get a piece of text from a HTTP result
+  @param url : url on which to execute the request
+  @param result : pointer to a char array in which the result will be stored
+  @param maxResultLen : length of the char array (including space for the NULL-terminating char)
+  @param timeout waiting timeout in ms (osWaitForever for blocking function, not recommended)
+  @return 0 on success, NET error on failure
+  */
+  int get(const char* url, char* result, size_t maxResultLen, uint32_t timeout = HTTP_CLIENT_DEFAULT_TIMEOUT); //Blocking
+
+  /** Execute a POST request on the url
+  Blocks until completion
+  @param url : url on which to execute the request
+  @param dataOut : a IHTTPDataOut instance that contains the data that will be posted
+  @param pDataIn : pointer to an IHTTPDataIn instance that will collect the data returned by the request, can be NULL
+  @param timeout waiting timeout in ms (osWaitForever for blocking function, not recommended)
+  @return 0 on success, NET error on failure
+  */
+  int post(const char* url, const IHTTPDataOut& dataOut, IHTTPDataIn* pDataIn, uint32_t timeout = HTTP_CLIENT_DEFAULT_TIMEOUT); //Blocking
+  
+  /** Get last request's HTTP response code
+  @return The HTTP response code of the last request
+  */
+  int getHTTPResponseCode();
+  
+private:
+  enum HTTP_METH
+  {
+    HTTP_GET,
+    HTTP_POST,
+    HTTP_HEAD
+  };
+
+  int connect(const char* url, HTTP_METH method, IHTTPDataOut* pDataOut, IHTTPDataIn* pDataIn, uint32_t timeout); //Execute request
+  int recv(char* buf, size_t minLen, size_t maxLen, size_t* pReadLen); //0 on success, err code on failure
+  int send(char* buf, size_t len = 0); //0 on success, err code on failure
+  int parseURL(const char* url, char* scheme, size_t maxSchemeLen, char* host, size_t maxHostLen, uint16_t* port, char* path, size_t maxPathLen); //Parse URL
+
+  //Parameters
+  int m_sock;
+  uint32_t m_timeout;
+
+  const char* m_basicAuthUser;
+  const char* m_basicAuthPassword;
+  int m_httpResponseCode;
+
+  struct sockaddr_in m_serverAddr;
+
+};
+
+//Including data containers here for more convenience
+#include "data/HTTPText.h"
+#include "data/HTTPMap.h"
+
+#endif