add examples/BasicHttpClient/BasicHttpClient.ino

fix get size
only fingerprint when strlen > 0

Author: Links2004

libraries/ESP8266httpClient/examples/BasicHttpClient/BasicHttpClient.ino

@@ -0,0 +1,77 @@
+/**
+ * BasicHttpClient.ino
+ *
+ *  Created on: 24.05.2015
+ *
+ */
+
+#include <Arduino.h>
+
+#include <ESP8266WiFi.h>
+#include <ESP8266WiFiMulti.h>
+
+#include <ESP8266httpClient.h>
+
+
+ESP8266WiFiMulti WiFiMulti;
+
+void setup() {
+    Serial.begin(115200);
+
+
+    Serial.println();
+    Serial.println();
+    Serial.println();
+
+
+      for(uint8_t t = 4; t > 0; t--) {
+          Serial.printf("[SETUP] WAIT %d...\n", t);
+          Serial.flush();
+          delay(1000);
+      }
+
+    WiFiMulti.addAP("SSID", "PASSWORD");
+
+    //WiFi.disconnect();
+    while(WiFiMulti.run() != WL_CONNECTED) {
+        delay(100);
+    }
+}
+
+void loop() {
+    if((WiFiMulti.run() == WL_CONNECTED)) {
+        httpClient http;
+
+        Serial.print("[HTTP] begin...\n");
+
+        http.begin("192.168.1.12", 80, "/test.html");
+
+        Serial.print("[HTTP] GET...\n");
+        if(http.GET()) {
+
+            Serial.print("[HTTP] GET... ok.\n");
+
+            size_t len = http.getSize();
+
+            uint8_t buff[128] = { 0 };
+            WiFiClient stream = http.getStream();
+            while(http.connected() && len > 0) {
+                size_t size = stream.available();
+                int c = stream.readBytes(buff, ((size > 128) ? 128 : size));
+
+                Serial.write(buff, c);
+                len -= c;
+
+                delay(0);
+            }
+            Serial.println();
+            Serial.print("[HTTP] connection closed or file end.\n");
+
+        } else {
+
+            Serial.print("[HTTP] GET... fail.\n");
+        }
+
+        delay(10000);
+    }
+}

libraries/ESP8266httpClient/src/ESP8266httpClient.cpp

@@ -36,7 +36,7 @@ httpClient::httpClient() {
     _currentHeaders = NULL;
 
     _returnCode = 0;
-    _size = 0;
+    _size = -1;
 }
 
 httpClient::~httpClient() {
@@ -51,11 +51,18 @@ httpClient::~httpClient() {
 }
 
 void httpClient::begin(const char *host, uint16_t port, const char * url, bool https, const char * httpsFingerprint) {
+
     _host = host;
     _port = port;
     _url = url;
     _https = https;
     _httpsFingerprint = httpsFingerprint;
+
+    _returnCode = 0;
+    _size = -1;
+
+    _Headers = "";
+
 }
 
 void httpClient::begin(String host, uint16_t port, String url, bool https, String httpsFingerprint) {
@@ -121,6 +128,15 @@ int httpClient::POST(String payload) {
     return POST((uint8_t *) payload.c_str(), payload.length());
 }
 
+
+/**
+ * size of message body / payload
+ * @return -1 if no info or > 0 when Content-Length is set by server
+ */
+int httpClient::getSize(void) {
+    return _size;
+}
+
 /**
  * returns the stram of the tcp connection
  * @return WiFiClient
@@ -194,13 +210,7 @@ bool httpClient::hasHeader(const char* name) {
     return false;
 }
 
-/**
- * size of message body / payload
- * @return 0 if no info or > 0 when Content-Length is set by server
- */
-size_t httpClient::getSize(void) {
-    return _size;
-}
+
 
 /**
  * init TCP connection and handle ssl verify if needed
@@ -209,7 +219,7 @@ size_t httpClient::getSize(void) {
 bool httpClient::connect(void) {
 
     if(connected()) {
-        DEBUG_HTTPCLIENT("[HTTP-Client] connect. already connected!\n");
+        DEBUG_HTTPCLIENT("[HTTP-Client] connect. already connected, reuse!\n");
         return true;
     }
 
@@ -229,7 +239,7 @@ bool httpClient::connect(void) {
 
     DEBUG_HTTPCLIENT("[HTTP-Client] connected to %s:%u.\n", _host.c_str(), _port);
 
-    if(_https) {
+    if(_https && _httpsFingerprint.length() > 0) {
         if(_tcps->verify(_httpsFingerprint.c_str(), _host.c_str())) {
             DEBUG_HTTPCLIENT("[HTTP-Client] https certificate matches\n");
         } else {

libraries/ESP8266httpClient/src/ESP8266httpClient.h

@@ -59,7 +59,7 @@ class httpClient {
         bool hasHeader(const char* name);  // check if header exists
 
 
-        size_t getSize(void);
+        int getSize(void);
 
         WiFiClient & getStream(void);
 
@@ -89,7 +89,7 @@ class httpClient {
         size_t           _headerKeysCount;
 
         int _returnCode;
-        size_t _size;
+        int _size;
 
 
         bool connect(void);