- Tue Mar 21, 2017 6:43 pm
#64070
This demo sketch posts a 256 byte file named data.bin to posttestserver.com.
Serial console should look like this.
Serial console should look like this.
Code: Select all
[SETUP] WAIT 1...
[HTTP] begin...
[HTTP] Content-Type: multipart/form-data; boundary=--71413ad5e199e91ccd838
[HTTP] POST...419
[HTTP] POST... code: 200
Successfully dumped 0 post variables.
View it at http://www.posttestserver.com/data/...
Post body was 0 chars long.
Code: Select all
/**
* BasicHTTPClientPostUpload.ino
*
* See http://posttestserver.com/ for the HTTP server details.
*
* Use HTTP multipart form-data to upload a 256 byte file.
*
* References:
* https://tools.ietf.org/html/rfc7230
* https://tools.ietf.org/html/rfc7231
*/
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266HTTPClient.h>
const uint8_t PROGMEM Post_Data[] = {
0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,
0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,
0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,
0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,
0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f,
0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5a,0x5b,0x5c,0x5d,0x5e,0x5f,
0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,
0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f,
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f,
0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,
0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7,0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0xbe,0xbf,
0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,
0xd0,0xd1,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xdb,0xdc,0xdd,0xde,0xdf,
0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xeb,0xec,0xed,0xee,0xef,
0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff
};
const char PROGMEM CONTENT_HEADERS[] =
"\r\nContent-Disposition: form-data; name=\"testfile\"; filename=\"data.bin\"\r\n"
"Content-Type: application/octet\r\n\r\n";
#define USE_SERIAL Serial
ESP8266WiFiMulti WiFiMulti;
void setup() {
USE_SERIAL.begin(115200);
// USE_SERIAL.setDebugOutput(true);
USE_SERIAL.println();
USE_SERIAL.println();
USE_SERIAL.println();
for(uint8_t t = 4; t > 0; t--) {
USE_SERIAL.printf("[SETUP] WAIT %d...\n", t);
USE_SERIAL.flush();
delay(1000);
}
WiFiMulti.addAP("SSID", "password");
}
void loop() {
// wait for WiFi connection
if((WiFiMulti.run() == WL_CONNECTED)) {
HTTPClient http;
int httpCode;
char body[2048];
char boundary[32] = "----";
randomSeed(micros() + analogRead(A0));
for (int i = 0; i < 3; i++) {
ltoa(random(0x7FFFFFF), boundary + strlen(boundary), 16);
}
USE_SERIAL.print("[HTTP] begin...\n");
// Use posttestserver.com
http.begin("http://posttestserver.com/post.php");
strcpy(body, "multipart/form-data; boundary=");
strcat(body, &boundary[2]);
USE_SERIAL.printf("[HTTP] Content-Type: %s\n", body);
http.addHeader("Content-Type", body, false, true);
// WARNING: Make sure body[] is big enough to hold the post data and
// headers.
strcpy(body, boundary);
strcat_P(body, CONTENT_HEADERS);
int content_length = strlen(body);
// Append binary post data to headers. Note binary data may include '\0'
// so C string functions can no longer be used on this buffer.
memcpy_P(body+content_length, Post_Data, sizeof(Post_Data));
content_length += sizeof(Post_Data);
memcpy(body+content_length, "\r\n", 2);
content_length += 2;
memcpy(body+content_length, boundary, strlen(boundary));
content_length += strlen(boundary);
memcpy(body+content_length, "--\r\n", 4);
content_length += 4;
USE_SERIAL.printf("[HTTP] POST...%d\n", content_length);
// start connection and send multipart/form-data
httpCode = http.POST((uint8_t*)body, content_length);
// httpCode will be negative on error
if(httpCode > 0) {
// HTTP header has been send and Server response header has been handled
USE_SERIAL.printf("[HTTP] POST... code: %d\n", httpCode);
// file found at server
if(httpCode == HTTP_CODE_OK) {
String payload = http.getString();
USE_SERIAL.println(payload);
}
} else {
USE_SERIAL.printf("[HTTP] POST... failed, error: %s\n", http.errorToString(httpCode).c_str());
}
http.end();
}
delay(10000);
}
