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Add optional content type, content length and body parameters to post, put, and startRequest

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Also, flush client RX data in start request, if state is ready body.
This commit is contained in:
Sandeep Mistry 2016-06-22 12:10:47 -04:00
parent 4ab54b0a1a
commit c3023b25ee
7 changed files with 134 additions and 53 deletions
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93
HttpClient.cpp
View File

@ -59,17 +59,18 @@ void HttpClient::beginRequest()
iState = eRequestStarted;
}
int HttpClient::startRequest(const char* aURLPath, const char* aHttpMethod)
int HttpClient::startRequest(const char* aURLPath, const char* aHttpMethod,
const char* aContentType, int aContentLength, const byte aBody[])
{
tHttpState initialState = iState;
if (!iConnectionClose)
if (iState == eReadingBody)
{
flushClientRx();
resetState();
}
tHttpState initialState = iState;
if ((eIdle != iState) && (eRequestStarted != iState))
{
return HTTP_ERROR_API;
@ -104,12 +105,31 @@ int HttpClient::startRequest(const char* aURLPath, const char* aHttpMethod)
// Now we're connected, send the first part of the request
int ret = sendInitialHeaders(aURLPath, aHttpMethod);
if ((initialState == eIdle) && (HTTP_SUCCESS == ret))
if (HTTP_SUCCESS == ret)
{
if (aContentType)
{
sendHeader(HTTP_HEADER_CONTENT_TYPE, aContentType);
}
if (aContentLength > 0)
{
sendHeader(HTTP_HEADER_CONTENT_LENGTH, aContentLength);
}
if ((initialState == eIdle))
{
// This was a simple version of the API, so terminate the headers now
finishHeaders();
if (aBody && aContentLength > 0)
{
write(aBody, aContentLength);
}
}
// else we'll call it in endRequest or in the first call to print, etc.
}
return ret;
}
@ -231,13 +251,10 @@ void HttpClient::finishHeaders()
void HttpClient::flushClientRx()
{
if (iClient->connected())
{
while (iClient->available())
{
iClient->read();
}
}
}
void HttpClient::endRequest()
@ -250,6 +267,66 @@ void HttpClient::endRequest()
// else the end of headers has already been sent, so nothing to do here
}
int HttpClient::get(const char* aURLPath)
{
return startRequest(aURLPath, HTTP_METHOD_GET);
}
int HttpClient::get(const String& aURLPath)
{
return get(aURLPath.c_str());
}
int HttpClient::post(const char* aURLPath)
{
return startRequest(aURLPath, HTTP_METHOD_POST);
}
int HttpClient::post(const String& aURLPath)
{
return post(aURLPath.c_str());
}
int HttpClient::post(const char* aURLPath, const char* aContentType, const char* aBody)
{
return post(aURLPath, aContentType, strlen(aBody), (const byte*)aBody);
}
int HttpClient::post(const String& aURLPath, const String& aContentType, const String& aBody)
{
return post(aURLPath.c_str(), aContentType.c_str(), aBody.length(), (const byte*)aBody.c_str());
}
int HttpClient::post(const char* aURLPath, const char* aContentType, int aContentLength, const byte aBody[])
{
return startRequest(aURLPath, HTTP_METHOD_POST, aContentType, aContentLength, aBody);
}
int HttpClient::put(const char* aURLPath)
{
return startRequest(aURLPath, HTTP_METHOD_PUT);
}
int HttpClient::put(const String& aURLPath)
{
return put(aURLPath.c_str());
}
int HttpClient::put(const char* aURLPath, const char* aContentType, const char* aBody)
{
return put(aURLPath, aContentType, strlen(aBody), (const byte*)aBody);
}
int HttpClient::put(const String& aURLPath, const String& aContentType, const String& aBody)
{
return put(aURLPath.c_str(), aContentType.c_str(), aBody.length(), (const byte*)aBody.c_str());
}
int HttpClient::put(const char* aURLPath, const char* aContentType, int aContentLength, const byte aBody[])
{
return startRequest(aURLPath, HTTP_METHOD_PUT, aContentType, aContentLength, aBody);
}
int HttpClient::responseStatusCode()
{
if (iState < eRequestSent)

48
HttpClient.h
View File

@ -31,6 +31,7 @@ static const int HTTP_ERROR_INVALID_RESPONSE =-4;
#define HTTP_METHOD_PUT "PUT"
#define HTTP_METHOD_DELETE "DELETE"
#define HTTP_HEADER_CONTENT_LENGTH "Content-Length"
#define HTTP_HEADER_CONTENT_TYPE "Content-Type"
#define HTTP_HEADER_CONNECTION "Connection"
#define HTTP_HEADER_USER_AGENT "User-Agent"
@ -64,39 +65,58 @@ public:
@param aURLPath Url to request
@return 0 if successful, else error
*/
int get(const char* aURLPath)
{ return startRequest(aURLPath, HTTP_METHOD_GET); }
int get(const String& aURLPath)
{ return get(aURLPath.c_str()); }
int get(const char* aURLPath);
int get(const String& aURLPath);
/** Connect to the server and start to send a POST request.
@param aURLPath Url to request
@return 0 if successful, else error
*/
int post(const char* aURLPath)
{ return startRequest(aURLPath, HTTP_METHOD_POST); }
int post(const char* aURLPath);
int post(const String& aURLPath);
int post(const String& aURLPath)
{ return post(aURLPath.c_str()); }
/** Connect to the server and start to send a POST request
with body and content type
@param aURLPath Url to request
@param aContentType Content type of request body
@param aBody Body of the request
@return 0 if successful, else error
*/
int post(const char* aURLPath, const char* aContentType, const char* aBody);
int post(const String& aURLPath, const String& aContentType, const String& aBody);
int post(const char* aURLPath, const char* aContentType, int aContentLength, const byte aBody[]);
/** Connect to the server and start to send a PUT request.
@param aURLPath Url to request
@return 0 if successful, else error
*/
int put(const char* aURLPath)
{ return startRequest(aURLPath, HTTP_METHOD_PUT); }
int put(const char* aURLPath);
int put(const String& aURLPath);
int put(const String& aURLPath)
{ return put(aURLPath.c_str()); }
/** Connect to the server and start to send a PUT request
with body and content type
@param aURLPath Url to request
@param aContentType Content type of request body
@param aBody Body of the request
@return 0 if successful, else error
*/
int put(const char* aURLPath, const char* aContentType, const char* aBody);
int put(const String& aURLPath, const String& aContentType, const String& aBody);
int put(const char* aURLPath, const char* aContentType, int aContentLength, const byte aBody[]);
/** Connect to the server and start to send the request.
@param aURLPath Url to request
@param aHttpMethod Type of HTTP request to make, e.g. "GET", "POST", etc.
@param aContentType Content type of request body (optional)
@param aContentLength Length of request body (optional)
@param aBody Body of request (optional)
@return 0 if successful, else error
*/
int startRequest(const char* aURLPath,
const char* aHttpMethod);
const char* aHttpMethod,
const char* aContentType = NULL,
int aContentLength = -1,
const byte aBody[] = NULL);
/** Send an additional header line. This can only be called in between the
calls to startRequest and finishRequest.

2
examples/DweetGet/DweetGet.ino
View File

@ -63,9 +63,7 @@ void loop() {
// send the GET request
Serial.println("making GET request");
client.beginRequest();
client.get(path);
client.endRequest();
// read the status code of the response
statusCode = client.responseStatusCode();

9
examples/DweetPost/DweetPost.ino
View File

@ -56,6 +56,8 @@ void loop() {
String dweetName = "scandalous-cheese-hoarder";
String path = "/dweet/for/" + dweetName;
String contentType = "application/json";
// assemble the body of the POST message:
int sensorValue = analogRead(A0);
String postData = "{\"sensorValue\":\"";
@ -65,12 +67,7 @@ void loop() {
Serial.println("making POST request");
// send the POST request
client.beginRequest();
client.post(path);
client.sendHeader("Content-Type", "application/json");
client.sendHeader("Content-Length", postData.length());
client.endRequest();
client.write((const byte*)postData.c_str(), postData.length());
client.post(path, contentType, postData);
// read the status code and content length of the response
statusCode = client.responseStatusCode();

5
examples/SimpleGet/SimpleGet.ino
View File

@ -49,12 +49,9 @@ void setup() {
void loop() {
Serial.println("making GET request");
client.get("/");
// read the status code and content length of the response
client.beginRequest();
client.get("/");
client.endRequest();
statusCode = client.responseStatusCode();
contentLength = client.contentLength();

8
examples/SimplePost/SimplePost.ino
View File

@ -50,14 +50,10 @@ void setup() {
void loop() {
Serial.println("making POST request");
String contentType = "application/x-www-form-urlencoded";
String postData = "name=Alice&age=12";
client.beginRequest();
client.post("/");
client.sendHeader("Content-Type", "application/x-www-form-urlencoded");
client.sendHeader("Content-Length", postData.length());
client.endRequest();
client.write((const byte*)postData.c_str(), postData.length());
client.post("/", contentType, postData);
// read the status code and content length of the response
statusCode = client.responseStatusCode();

8
examples/SimplePut/SimplePut.ino
View File

@ -50,14 +50,10 @@ void setup() {
void loop() {
Serial.println("making PUT request");
String contentType = "application/x-www-form-urlencoded";
String putData = "name=light&age=46";
client.beginRequest();
client.put("/");
client.sendHeader("Content-Type", "application/x-www-form-urlencoded");
client.sendHeader("Content-Length", putData.length());
client.endRequest();
client.write((const byte*)putData.c_str(), putData.length());
client.put("/", contentType, putData);
// read the status code and content length of the response
statusCode = client.responseStatusCode();