Norimasa Okamoto
WIZ820io（W5200) network interface、EthernetNetIf compatible.
example
#include "WIZ820ioNetIf.h"
#include "HTTPClient.h"
#include "HTTPServer.h"
#if defined(TARGET_KL25Z)
WIZ820ioNetIf eth(PTD2,PTD3,PTD1,PTD0,PTD5);
#endif
HTTPClient http;
HTTPStream stream;
void callback(HTTPResult r){
printf("callback %d %s\n", r, HTTPClient::ResultStr(r));
}
int main() {
int err = eth.setup();
if (err < 0) {
printf("setup error %d\n", err);
exit(-1);
}
HTTPServer svr;
svr.addHandler<SimpleHandler>("/");
svr.bind(80);
const char* uri = "http://va009039-mbed.appspot.com/kl25z/";
http.get(uri, &stream, callback);
uint8_t buf[256];
int total = 0;
stream.readNext(buf, sizeof(buf));
while(1) {
if(stream.readable()) {
int len = stream.readLen();
total += len;
printf("%d %d\n", total, len);
stream.readNext(buf, sizeof(buf));
}
Net::poll();
}
}
Diff: NetServices/services/http/client/data/HTTPStream.h
- Revision:
- 1:22b9052d864d
diff -r bdeec5f86894 -r 22b9052d864d NetServices/services/http/client/data/HTTPStream.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/NetServices/services/http/client/data/HTTPStream.h Sun Mar 24 11:25:31 2013 +0000
@@ -0,0 +1,83 @@
+
+/*
+Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+
+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.
+*/
+
+#ifndef HTTP_STREAM_H
+#define HTTP_STREAM_H
+
+#include "../HTTPData.h"
+#include "mbed.h"
+
+/** \file
+HTTP Stream data source/sink header file
+*/
+
+typedef uint8_t byte;
+
+///HTTP Client Streaming tool
+/**
+This class allows you to stream data from the web using a persisting HTTP connection.
+To use it properly you must use a non-blocking HTTPClient method.
+*/
+class HTTPStream : public HTTPData //Streaming buf
+{
+public:
+ ///Instantiates the object
+ HTTPStream();
+ virtual ~HTTPStream();
+
+ ///Starts to read into buffer
+ /**
+ Passes a buffer of address @a buf and size @a size to the instance.
+ When it receives data it will be stored in this buffer.
+ When the buffer is full it throttles the client until this function is called again.
+ */
+ void readNext(byte* buf, int size);
+
+ ///Returns whether there is data available to read
+ bool readable();
+
+ ///Returns the actual length of the payload written in the buffer
+ int readLen();
+
+ virtual void clear();
+
+protected:
+ virtual int read(char* buf, int len);
+ virtual int write(const char* buf, int len);
+
+ virtual string getDataType(); //Internet media type for Content-Type header
+ virtual void setDataType(const string& type); //Internet media type from Content-Type header
+
+ virtual bool getIsChunked(); //For Transfer-Encoding header
+ virtual void setIsChunked(bool chunked); //From Transfer-Encoding header
+
+ virtual int getDataLen(); //For Content-Length header
+ virtual void setDataLen(int len); //From Content-Length header, or if the transfer is chunked, next chunk length
+
+private:
+ byte* m_buf;
+ int m_size; //Capacity
+ int m_len; //Length
+};
+
+#endif