Fang Bao / HTTPClient

HTTPClient

Fork of HTTPClient by Donatien Garnier

HTTPClient.cpp@11:390362de8c3f, 2012-07-30 (annotated)

Committer:
donatien
Date:
Mon Jul 30 15:16:51 2012 +0000
Revision:
11:390362de8c3f
Parent:
10:e1351de84c16
Child:
12:89d09a6db00a
Update for compat with newest Socket API

Who changed what in which revision?

UserRevisionLine numberNew contents of line
donatien 0:2ccb9960a044 1 /* HTTPClient.cpp */
donatien 10:e1351de84c16 2 /* Copyright (C) 2012 mbed.org, MIT License
donatien 10:e1351de84c16 3 *
donatien 10:e1351de84c16 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
donatien 10:e1351de84c16 5 * and associated documentation files (the "Software"), to deal in the Software without restriction,
donatien 10:e1351de84c16 6 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
donatien 10:e1351de84c16 7 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
donatien 10:e1351de84c16 8 * furnished to do so, subject to the following conditions:
donatien 10:e1351de84c16 9 *
donatien 10:e1351de84c16 10 * The above copyright notice and this permission notice shall be included in all copies or
donatien 10:e1351de84c16 11 * substantial portions of the Software.
donatien 10:e1351de84c16 12 *
donatien 10:e1351de84c16 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
donatien 10:e1351de84c16 14 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
donatien 10:e1351de84c16 15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
donatien 10:e1351de84c16 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
donatien 10:e1351de84c16 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
donatien 10:e1351de84c16 18 */
donatien 0:2ccb9960a044 19
donatien 7:4e39864f7b15 20 //Debug is disabled by default
donatien 7:4e39864f7b15 21 #if 0
donatien 11:390362de8c3f 22 #define DBG(x, ...)
donatien 11:390362de8c3f 23 #define WARN(x, ...)
donatien 11:390362de8c3f 24 #define ERR(x, ...)
donatien 7:4e39864f7b15 25 #else
donatien 11:390362de8c3f 26 #include <cstdio>
donatien 11:390362de8c3f 27 #define DBG(x, ...) std::printf("[HTTPClient : DBG]"x"\r\n", ##__VA_ARGS__);
donatien 11:390362de8c3f 28 #define WARN(x, ...) std::printf("[HTTPClient : WARN]"x"\r\n", ##__VA_ARGS__);
donatien 11:390362de8c3f 29 #define ERR(x, ...) std::printf("[HTTPClient : ERR]"x"\r\n", ##__VA_ARGS__);
donatien 7:4e39864f7b15 30 #endif
donatien 0:2ccb9960a044 31
donatien 0:2ccb9960a044 32 #define HTTP_REQUEST_TIMEOUT 30000
donatien 0:2ccb9960a044 33 #define HTTP_PORT 80
donatien 0:2ccb9960a044 34
donatien 11:390362de8c3f 35 #define OK 0
donatien 11:390362de8c3f 36
donatien 11:390362de8c3f 37 #define MIN(x,y) (((x)<(y))?(x):(y))
donatien 11:390362de8c3f 38 #define MAX(x,y) (((x)>(y))?(x):(y))
donatien 11:390362de8c3f 39
donatien 0:2ccb9960a044 40 #define CHUNK_SIZE 256
donatien 0:2ccb9960a044 41
donatien 0:2ccb9960a044 42 #include <cstring>
donatien 0:2ccb9960a044 43
donatien 11:390362de8c3f 44 #include "HTTPClient.h"
donatien 11:390362de8c3f 45
donatien 0:2ccb9960a044 46 HTTPClient::HTTPClient() :
donatien 7:4e39864f7b15 47 m_sock(), m_basicAuthUser(NULL), m_basicAuthPassword(NULL), m_httpResponseCode(0)
donatien 0:2ccb9960a044 48 {
donatien 0:2ccb9960a044 49
donatien 0:2ccb9960a044 50 }
donatien 0:2ccb9960a044 51
donatien 0:2ccb9960a044 52 HTTPClient::~HTTPClient()
donatien 0:2ccb9960a044 53 {
donatien 0:2ccb9960a044 54
donatien 0:2ccb9960a044 55 }
donatien 0:2ccb9960a044 56
donatien 0:2ccb9960a044 57 #if 0
donatien 0:2ccb9960a044 58 void HTTPClient::basicAuth(const char* user, const char* password) //Basic Authentification
donatien 0:2ccb9960a044 59 {
donatien 0:2ccb9960a044 60 m_basicAuthUser = user;
donatien 0:2ccb9960a044 61 m_basicAuthPassword = password;
donatien 0:2ccb9960a044 62 }
donatien 0:2ccb9960a044 63 #endif
donatien 0:2ccb9960a044 64
donatien 11:390362de8c3f 65 HTTPResult HTTPClient::get(const char* url, IHTTPDataIn* pDataIn, uint32_t timeout /*= HTTP_CLIENT_DEFAULT_TIMEOUT*/) //Blocking
donatien 0:2ccb9960a044 66 {
donatien 0:2ccb9960a044 67 return connect(url, HTTP_GET, NULL, pDataIn, timeout);
donatien 0:2ccb9960a044 68 }
donatien 0:2ccb9960a044 69
donatien 11:390362de8c3f 70 HTTPResult HTTPClient::get(const char* url, char* result, size_t maxResultLen, uint32_t timeout /*= HTTP_CLIENT_DEFAULT_TIMEOUT*/) //Blocking
donatien 0:2ccb9960a044 71 {
donatien 0:2ccb9960a044 72 HTTPText str(result, maxResultLen);
donatien 0:2ccb9960a044 73 return get(url, &str, timeout);
donatien 0:2ccb9960a044 74 }
donatien 0:2ccb9960a044 75
donatien 11:390362de8c3f 76 HTTPResult HTTPClient::post(const char* url, const IHTTPDataOut& dataOut, IHTTPDataIn* pDataIn, uint32_t timeout /*= HTTP_CLIENT_DEFAULT_TIMEOUT*/) //Blocking
donatien 0:2ccb9960a044 77 {
donatien 0:2ccb9960a044 78 return connect(url, HTTP_POST, (IHTTPDataOut*)&dataOut, pDataIn, timeout);
donatien 0:2ccb9960a044 79 }
donatien 0:2ccb9960a044 80
donatien 0:2ccb9960a044 81 int HTTPClient::getHTTPResponseCode()
donatien 0:2ccb9960a044 82 {
donatien 0:2ccb9960a044 83 return m_httpResponseCode;
donatien 0:2ccb9960a044 84 }
donatien 0:2ccb9960a044 85
donatien 5:791fc3dcb6c4 86 #define CHECK_CONN_ERR(ret) \
donatien 5:791fc3dcb6c4 87 do{ \
donatien 7:4e39864f7b15 88 if(ret) { \
donatien 7:4e39864f7b15 89 m_sock.close(); \
donatien 5:791fc3dcb6c4 90 ERR("Connection error (%d)", ret); \
donatien 11:390362de8c3f 91 return HTTP_CONN; \
donatien 5:791fc3dcb6c4 92 } \
donatien 5:791fc3dcb6c4 93 } while(0)
donatien 5:791fc3dcb6c4 94
donatien 5:791fc3dcb6c4 95 #define PRTCL_ERR() \
donatien 5:791fc3dcb6c4 96 do{ \
donatien 7:4e39864f7b15 97 m_sock.close(); \
donatien 5:791fc3dcb6c4 98 ERR("Protocol error"); \
donatien 11:390362de8c3f 99 return HTTP_PRTCL; \
donatien 5:791fc3dcb6c4 100 } while(0)
donatien 0:2ccb9960a044 101
donatien 11:390362de8c3f 102 HTTPResult HTTPClient::connect(const char* url, HTTP_METH method, IHTTPDataOut* pDataOut, IHTTPDataIn* pDataIn, uint32_t timeout) //Execute request
donatien 0:2ccb9960a044 103 {
donatien 0:2ccb9960a044 104 m_httpResponseCode = 0; //Invalidate code
donatien 0:2ccb9960a044 105 m_timeout = timeout;
donatien 0:2ccb9960a044 106
donatien 0:2ccb9960a044 107 char scheme[8];
donatien 0:2ccb9960a044 108 uint16_t port;
donatien 0:2ccb9960a044 109 char host[32];
donatien 0:2ccb9960a044 110 char path[64];
donatien 0:2ccb9960a044 111 //First we need to parse the url (http[s]://host[:port][/[path]]) -- HTTPS not supported (yet?)
donatien 11:390362de8c3f 112 HTTPResult res = parseURL(url, scheme, sizeof(scheme), host, sizeof(host), &port, path, sizeof(path));
donatien 11:390362de8c3f 113 if(res != HTTP_OK)
donatien 0:2ccb9960a044 114 {
donatien 11:390362de8c3f 115 ERR("parseURL returned %d", res);
donatien 11:390362de8c3f 116 return res;
donatien 0:2ccb9960a044 117 }
donatien 0:2ccb9960a044 118
donatien 0:2ccb9960a044 119 if(port == 0) //TODO do handle HTTPS->443
donatien 0:2ccb9960a044 120 {
donatien 0:2ccb9960a044 121 port = 80;
donatien 0:2ccb9960a044 122 }
donatien 0:2ccb9960a044 123
donatien 0:2ccb9960a044 124 DBG("Scheme: %s", scheme);
donatien 0:2ccb9960a044 125 DBG("Host: %s", host);
donatien 0:2ccb9960a044 126 DBG("Port: %d", port);
donatien 0:2ccb9960a044 127 DBG("Path: %s", path);
donatien 0:2ccb9960a044 128
donatien 7:4e39864f7b15 129 //Connect
donatien 7:4e39864f7b15 130 DBG("Connecting socket to server");
donatien 11:390362de8c3f 131 int ret = m_sock.connect(host, port);
donatien 0:2ccb9960a044 132 if (ret < 0)
donatien 0:2ccb9960a044 133 {
donatien 7:4e39864f7b15 134 m_sock.close();
donatien 0:2ccb9960a044 135 ERR("Could not connect");
donatien 11:390362de8c3f 136 return HTTP_CONN;
donatien 0:2ccb9960a044 137 }
donatien 0:2ccb9960a044 138
donatien 0:2ccb9960a044 139 //Send request
donatien 0:2ccb9960a044 140 DBG("Sending request");
donatien 9:ff30cc189191 141 char buf[CHUNK_SIZE];
donatien 0:2ccb9960a044 142 const char* meth = (method==HTTP_GET)?"GET":(method==HTTP_POST)?"POST":"";
donatien 9:ff30cc189191 143 snprintf(buf, sizeof(buf), "%s %s HTTP/1.1\r\nHost: %s\r\n", meth, path, host); //Write request
donatien 9:ff30cc189191 144 ret = send(buf);
donatien 0:2ccb9960a044 145 if(ret)
donatien 0:2ccb9960a044 146 {
donatien 7:4e39864f7b15 147 m_sock.close();
donatien 0:2ccb9960a044 148 ERR("Could not write request");
donatien 11:390362de8c3f 149 return HTTP_CONN;
donatien 0:2ccb9960a044 150 }
donatien 0:2ccb9960a044 151
donatien 0:2ccb9960a044 152 //Send all headers
donatien 0:2ccb9960a044 153
donatien 0:2ccb9960a044 154 //Send default headers
donatien 0:2ccb9960a044 155 DBG("Sending headers");
donatien 0:2ccb9960a044 156 if( (method == HTTP_POST) && (pDataOut != NULL) )
donatien 0:2ccb9960a044 157 {
donatien 0:2ccb9960a044 158 if( pDataOut->getIsChunked() )
donatien 0:2ccb9960a044 159 {
donatien 0:2ccb9960a044 160 ret = send("Transfer-Encoding: chunked\r\n");
donatien 5:791fc3dcb6c4 161 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 162 }
donatien 0:2ccb9960a044 163 else
donatien 0:2ccb9960a044 164 {
donatien 9:ff30cc189191 165 snprintf(buf, sizeof(buf), "Content-Length: %d\r\n", pDataOut->getDataLen());
donatien 9:ff30cc189191 166 ret = send(buf);
donatien 5:791fc3dcb6c4 167 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 168 }
donatien 0:2ccb9960a044 169 char type[48];
donatien 11:390362de8c3f 170 if( pDataOut->getDataType(type, 48) == HTTP_OK )
donatien 0:2ccb9960a044 171 {
donatien 9:ff30cc189191 172 snprintf(buf, sizeof(buf), "Content-Type: %s\r\n", type);
donatien 9:ff30cc189191 173 ret = send(buf);
donatien 5:791fc3dcb6c4 174 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 175 }
donatien 0:2ccb9960a044 176 }
donatien 9:ff30cc189191 177
donatien 0:2ccb9960a044 178 //Close headers
donatien 0:2ccb9960a044 179 DBG("Headers sent");
donatien 0:2ccb9960a044 180 ret = send("\r\n");
donatien 5:791fc3dcb6c4 181 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 182
donatien 4:c071b05ac026 183 size_t trfLen;
donatien 9:ff30cc189191 184
donatien 0:2ccb9960a044 185 //Send data (if POST)
donatien 0:2ccb9960a044 186 if( (method == HTTP_POST) && (pDataOut != NULL) )
donatien 0:2ccb9960a044 187 {
donatien 0:2ccb9960a044 188 DBG("Sending data");
donatien 0:2ccb9960a044 189 while(true)
donatien 0:2ccb9960a044 190 {
donatien 0:2ccb9960a044 191 size_t writtenLen = 0;
donatien 0:2ccb9960a044 192 pDataOut->read(buf, CHUNK_SIZE, &trfLen);
donatien 0:2ccb9960a044 193 if( pDataOut->getIsChunked() )
donatien 0:2ccb9960a044 194 {
donatien 0:2ccb9960a044 195 //Write chunk header
donatien 9:ff30cc189191 196 char chunkHeader[16];
donatien 9:ff30cc189191 197 snprintf(chunkHeader, sizeof(chunkHeader), "%X\r\n", trfLen); //In hex encoding
donatien 9:ff30cc189191 198 ret = send(chunkHeader);
donatien 5:791fc3dcb6c4 199 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 200 }
donatien 0:2ccb9960a044 201 else if( trfLen == 0 )
donatien 0:2ccb9960a044 202 {
donatien 0:2ccb9960a044 203 break;
donatien 0:2ccb9960a044 204 }
donatien 0:2ccb9960a044 205 if( trfLen != 0 )
donatien 0:2ccb9960a044 206 {
donatien 0:2ccb9960a044 207 ret = send(buf, trfLen);
donatien 5:791fc3dcb6c4 208 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 209 }
donatien 0:2ccb9960a044 210
donatien 0:2ccb9960a044 211 if( pDataOut->getIsChunked() )
donatien 0:2ccb9960a044 212 {
donatien 0:2ccb9960a044 213 ret = send("\r\n"); //Chunk-terminating CRLF
donatien 5:791fc3dcb6c4 214 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 215 }
donatien 0:2ccb9960a044 216 else
donatien 0:2ccb9960a044 217 {
donatien 0:2ccb9960a044 218 writtenLen += trfLen;
donatien 0:2ccb9960a044 219 if( writtenLen >= pDataOut->getDataLen() )
donatien 0:2ccb9960a044 220 {
donatien 0:2ccb9960a044 221 break;
donatien 0:2ccb9960a044 222 }
donatien 0:2ccb9960a044 223 }
donatien 0:2ccb9960a044 224
donatien 0:2ccb9960a044 225 if( trfLen == 0 )
donatien 0:2ccb9960a044 226 {
donatien 0:2ccb9960a044 227 break;
donatien 0:2ccb9960a044 228 }
donatien 0:2ccb9960a044 229 }
donatien 0:2ccb9960a044 230
donatien 0:2ccb9960a044 231 }
donatien 9:ff30cc189191 232
donatien 0:2ccb9960a044 233 //Receive response
donatien 0:2ccb9960a044 234 DBG("Receiving response");
donatien 4:c071b05ac026 235 ret = recv(buf, CHUNK_SIZE - 1, CHUNK_SIZE - 1, &trfLen); //Read n bytes
donatien 5:791fc3dcb6c4 236 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 237
donatien 0:2ccb9960a044 238 buf[trfLen] = '\0';
donatien 0:2ccb9960a044 239
donatien 0:2ccb9960a044 240 char* crlfPtr = strstr(buf, "\r\n");
donatien 0:2ccb9960a044 241 if(crlfPtr == NULL)
donatien 0:2ccb9960a044 242 {
donatien 5:791fc3dcb6c4 243 PRTCL_ERR();
donatien 0:2ccb9960a044 244 }
donatien 0:2ccb9960a044 245
donatien 4:c071b05ac026 246 int crlfPos = crlfPtr - buf;
donatien 0:2ccb9960a044 247 buf[crlfPos] = '\0';
donatien 0:2ccb9960a044 248
donatien 0:2ccb9960a044 249 //Parse HTTP response
donatien 0:2ccb9960a044 250 if( sscanf(buf, "HTTP/%*d.%*d %d %*[^\r\n]", &m_httpResponseCode) != 1 )
donatien 0:2ccb9960a044 251 {
donatien 0:2ccb9960a044 252 //Cannot match string, error
donatien 0:2ccb9960a044 253 ERR("Not a correct HTTP answer : %s\n", buf);
donatien 5:791fc3dcb6c4 254 PRTCL_ERR();
donatien 0:2ccb9960a044 255 }
donatien 0:2ccb9960a044 256
donatien 0:2ccb9960a044 257 if(m_httpResponseCode != 200)
donatien 0:2ccb9960a044 258 {
donatien 0:2ccb9960a044 259 //Cannot match string, error
donatien 0:2ccb9960a044 260 WARN("Response code %d", m_httpResponseCode);
donatien 5:791fc3dcb6c4 261 PRTCL_ERR();
donatien 0:2ccb9960a044 262 }
donatien 0:2ccb9960a044 263
donatien 0:2ccb9960a044 264 DBG("Reading headers");
donatien 0:2ccb9960a044 265
donatien 4:c071b05ac026 266 memmove(buf, &buf[crlfPos+2], trfLen - (crlfPos + 2) + 1); //Be sure to move NULL-terminating char as well
donatien 0:2ccb9960a044 267 trfLen -= (crlfPos + 2);
donatien 0:2ccb9960a044 268
donatien 4:c071b05ac026 269 size_t recvContentLength = 0;
donatien 4:c071b05ac026 270 bool recvChunked = false;
donatien 0:2ccb9960a044 271 //Now get headers
donatien 0:2ccb9960a044 272 while( true )
donatien 0:2ccb9960a044 273 {
donatien 0:2ccb9960a044 274 crlfPtr = strstr(buf, "\r\n");
donatien 0:2ccb9960a044 275 if(crlfPtr == NULL)
donatien 0:2ccb9960a044 276 {
donatien 4:c071b05ac026 277 if( trfLen < CHUNK_SIZE - 1 )
donatien 0:2ccb9960a044 278 {
donatien 0:2ccb9960a044 279 size_t newTrfLen;
donatien 0:2ccb9960a044 280 ret = recv(buf + trfLen, 1, CHUNK_SIZE - trfLen - 1, &newTrfLen);
donatien 0:2ccb9960a044 281 trfLen += newTrfLen;
donatien 0:2ccb9960a044 282 buf[trfLen] = '\0';
donatien 4:c071b05ac026 283 DBG("Read %d chars; In buf: [%s]", newTrfLen, buf);
donatien 5:791fc3dcb6c4 284 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 285 continue;
donatien 0:2ccb9960a044 286 }
donatien 0:2ccb9960a044 287 else
donatien 0:2ccb9960a044 288 {
donatien 5:791fc3dcb6c4 289 PRTCL_ERR();
donatien 0:2ccb9960a044 290 }
donatien 0:2ccb9960a044 291 }
donatien 0:2ccb9960a044 292
donatien 0:2ccb9960a044 293 crlfPos = crlfPtr - buf;
donatien 0:2ccb9960a044 294
donatien 0:2ccb9960a044 295 if(crlfPos == 0) //End of headers
donatien 0:2ccb9960a044 296 {
donatien 0:2ccb9960a044 297 DBG("Headers read");
donatien 4:c071b05ac026 298 memmove(buf, &buf[2], trfLen - 2 + 1); //Be sure to move NULL-terminating char as well
donatien 0:2ccb9960a044 299 trfLen -= 2;
donatien 0:2ccb9960a044 300 break;
donatien 0:2ccb9960a044 301 }
donatien 0:2ccb9960a044 302
donatien 0:2ccb9960a044 303 buf[crlfPos] = '\0';
donatien 0:2ccb9960a044 304
donatien 4:c071b05ac026 305 char key[32];
donatien 4:c071b05ac026 306 char value[32];
donatien 0:2ccb9960a044 307
donatien 4:c071b05ac026 308 key[31] = '\0';
donatien 4:c071b05ac026 309 value[31] = '\0';
donatien 4:c071b05ac026 310
donatien 4:c071b05ac026 311 int n = sscanf(buf, "%31[^:]: %31[^\r\n]", key, value);
donatien 0:2ccb9960a044 312 if ( n == 2 )
donatien 0:2ccb9960a044 313 {
donatien 0:2ccb9960a044 314 DBG("Read header : %s: %s\n", key, value);
donatien 0:2ccb9960a044 315 if( !strcmp(key, "Content-Length") )
donatien 0:2ccb9960a044 316 {
donatien 0:2ccb9960a044 317 sscanf(value, "%d", &recvContentLength);
donatien 0:2ccb9960a044 318 pDataIn->setDataLen(recvContentLength);
donatien 0:2ccb9960a044 319 }
donatien 0:2ccb9960a044 320 else if( !strcmp(key, "Transfer-Encoding") )
donatien 0:2ccb9960a044 321 {
donatien 0:2ccb9960a044 322 if( !strcmp(value, "Chunked") || !strcmp(value, "chunked") )
donatien 0:2ccb9960a044 323 {
donatien 0:2ccb9960a044 324 recvChunked = true;
donatien 0:2ccb9960a044 325 pDataIn->setIsChunked(true);
donatien 0:2ccb9960a044 326 }
donatien 0:2ccb9960a044 327 }
donatien 0:2ccb9960a044 328 else if( !strcmp(key, "Content-Type") )
donatien 0:2ccb9960a044 329 {
donatien 0:2ccb9960a044 330 pDataIn->setDataType(value);
donatien 0:2ccb9960a044 331 }
donatien 0:2ccb9960a044 332
donatien 4:c071b05ac026 333 memmove(buf, &buf[crlfPos+2], trfLen - (crlfPos + 2) + 1); //Be sure to move NULL-terminating char as well
donatien 0:2ccb9960a044 334 trfLen -= (crlfPos + 2);
donatien 0:2ccb9960a044 335
donatien 0:2ccb9960a044 336 }
donatien 0:2ccb9960a044 337 else
donatien 0:2ccb9960a044 338 {
donatien 0:2ccb9960a044 339 ERR("Could not parse header");
donatien 5:791fc3dcb6c4 340 PRTCL_ERR();
donatien 0:2ccb9960a044 341 }
donatien 0:2ccb9960a044 342
donatien 0:2ccb9960a044 343 }
donatien 0:2ccb9960a044 344
donatien 0:2ccb9960a044 345 //Receive data
donatien 0:2ccb9960a044 346 DBG("Receiving data");
donatien 0:2ccb9960a044 347 while(true)
donatien 0:2ccb9960a044 348 {
donatien 0:2ccb9960a044 349 size_t readLen = 0;
donatien 0:2ccb9960a044 350
donatien 0:2ccb9960a044 351 if( recvChunked )
donatien 0:2ccb9960a044 352 {
donatien 0:2ccb9960a044 353 //Read chunk header
donatien 0:2ccb9960a044 354 crlfPos=0;
donatien 0:2ccb9960a044 355 for(crlfPos++; crlfPos < trfLen - 2; crlfPos++)
donatien 0:2ccb9960a044 356 {
donatien 0:2ccb9960a044 357 if( buf[crlfPos] == '\r' && buf[crlfPos + 1] == '\n' )
donatien 0:2ccb9960a044 358 {
donatien 0:2ccb9960a044 359 break;
donatien 0:2ccb9960a044 360 }
donatien 0:2ccb9960a044 361 }
donatien 0:2ccb9960a044 362 if(crlfPos >= trfLen - 2) //Try to read more
donatien 0:2ccb9960a044 363 {
donatien 0:2ccb9960a044 364 if( trfLen < CHUNK_SIZE )
donatien 0:2ccb9960a044 365 {
donatien 0:2ccb9960a044 366 size_t newTrfLen;
donatien 0:2ccb9960a044 367 ret = recv(buf + trfLen, 0, CHUNK_SIZE - trfLen - 1, &newTrfLen);
donatien 0:2ccb9960a044 368 trfLen += newTrfLen;
donatien 5:791fc3dcb6c4 369 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 370 continue;
donatien 0:2ccb9960a044 371 }
donatien 0:2ccb9960a044 372 else
donatien 0:2ccb9960a044 373 {
donatien 5:791fc3dcb6c4 374 PRTCL_ERR();
donatien 0:2ccb9960a044 375 }
donatien 0:2ccb9960a044 376 }
donatien 0:2ccb9960a044 377 buf[crlfPos] = '\0';
donatien 0:2ccb9960a044 378 int n = sscanf(buf, "%x", &readLen);
donatien 0:2ccb9960a044 379 if(n!=1)
donatien 0:2ccb9960a044 380 {
donatien 0:2ccb9960a044 381 ERR("Could not read chunk length");
donatien 5:791fc3dcb6c4 382 PRTCL_ERR();
donatien 0:2ccb9960a044 383 }
donatien 0:2ccb9960a044 384
donatien 4:c071b05ac026 385 memmove(buf, &buf[crlfPos+2], trfLen - (crlfPos + 2)); //Not need to move NULL-terminating char any more
donatien 0:2ccb9960a044 386 trfLen -= (crlfPos + 2);
donatien 0:2ccb9960a044 387
donatien 0:2ccb9960a044 388 if( readLen == 0 )
donatien 0:2ccb9960a044 389 {
donatien 0:2ccb9960a044 390 //Last chunk
donatien 0:2ccb9960a044 391 break;
donatien 0:2ccb9960a044 392 }
donatien 0:2ccb9960a044 393 }
donatien 0:2ccb9960a044 394 else
donatien 0:2ccb9960a044 395 {
donatien 0:2ccb9960a044 396 readLen = recvContentLength;
donatien 0:2ccb9960a044 397 }
donatien 0:2ccb9960a044 398
donatien 0:2ccb9960a044 399 DBG("Retrieving %d bytes", readLen);
donatien 0:2ccb9960a044 400
donatien 0:2ccb9960a044 401 do
donatien 0:2ccb9960a044 402 {
donatien 0:2ccb9960a044 403 pDataIn->write(buf, MIN(trfLen, readLen));
donatien 0:2ccb9960a044 404 if( trfLen > readLen )
donatien 0:2ccb9960a044 405 {
donatien 0:2ccb9960a044 406 memmove(buf, &buf[readLen], trfLen - readLen);
donatien 0:2ccb9960a044 407 trfLen -= readLen;
donatien 0:2ccb9960a044 408 readLen = 0;
donatien 0:2ccb9960a044 409 }
donatien 0:2ccb9960a044 410 else
donatien 0:2ccb9960a044 411 {
donatien 0:2ccb9960a044 412 readLen -= trfLen;
donatien 0:2ccb9960a044 413 }
donatien 0:2ccb9960a044 414
donatien 0:2ccb9960a044 415 if(readLen)
donatien 0:2ccb9960a044 416 {
donatien 0:2ccb9960a044 417 ret = recv(buf, 1, CHUNK_SIZE - trfLen - 1, &trfLen);
donatien 5:791fc3dcb6c4 418 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 419 }
donatien 0:2ccb9960a044 420 } while(readLen);
donatien 0:2ccb9960a044 421
donatien 0:2ccb9960a044 422 if( recvChunked )
donatien 0:2ccb9960a044 423 {
donatien 0:2ccb9960a044 424 if(trfLen < 2)
donatien 0:2ccb9960a044 425 {
donatien 0:2ccb9960a044 426 size_t newTrfLen;
donatien 0:2ccb9960a044 427 //Read missing chars to find end of chunk
donatien 0:2ccb9960a044 428 ret = recv(buf, 2 - trfLen, CHUNK_SIZE, &newTrfLen);
donatien 5:791fc3dcb6c4 429 CHECK_CONN_ERR(ret);
donatien 0:2ccb9960a044 430 trfLen += newTrfLen;
donatien 0:2ccb9960a044 431 }
donatien 0:2ccb9960a044 432 if( (buf[0] != '\r') || (buf[1] != '\n') )
donatien 0:2ccb9960a044 433 {
donatien 0:2ccb9960a044 434 ERR("Format error");
donatien 5:791fc3dcb6c4 435 PRTCL_ERR();
donatien 0:2ccb9960a044 436 }
donatien 0:2ccb9960a044 437 memmove(buf, &buf[2], trfLen - 2);
donatien 0:2ccb9960a044 438 trfLen -= 2;
donatien 0:2ccb9960a044 439 }
donatien 0:2ccb9960a044 440 else
donatien 0:2ccb9960a044 441 {
donatien 0:2ccb9960a044 442 break;
donatien 0:2ccb9960a044 443 }
donatien 0:2ccb9960a044 444
donatien 0:2ccb9960a044 445 }
donatien 0:2ccb9960a044 446
donatien 7:4e39864f7b15 447 m_sock.close();
donatien 0:2ccb9960a044 448 DBG("Completed HTTP transaction");
donatien 0:2ccb9960a044 449
donatien 11:390362de8c3f 450 return HTTP_OK;
donatien 0:2ccb9960a044 451 }
donatien 0:2ccb9960a044 452
donatien 11:390362de8c3f 453 HTTPResult HTTPClient::recv(char* buf, size_t minLen, size_t maxLen, size_t* pReadLen) //0 on success, err code on failure
donatien 0:2ccb9960a044 454 {
donatien 0:2ccb9960a044 455 DBG("Trying to read between %d and %d bytes", minLen, maxLen);
donatien 0:2ccb9960a044 456 size_t readLen = 0;
donatien 7:4e39864f7b15 457
donatien 7:4e39864f7b15 458 int ret;
donatien 7:4e39864f7b15 459 while(readLen < maxLen)
donatien 0:2ccb9960a044 460 {
donatien 7:4e39864f7b15 461 if(readLen < minLen)
donatien 0:2ccb9960a044 462 {
donatien 11:390362de8c3f 463 ret = m_sock.receive_all(buf + readLen, minLen - readLen, m_timeout);
donatien 0:2ccb9960a044 464 }
donatien 7:4e39864f7b15 465 else
donatien 7:4e39864f7b15 466 {
donatien 7:4e39864f7b15 467 ret = m_sock.receive(buf + readLen, maxLen - readLen, 0);
donatien 7:4e39864f7b15 468 }
donatien 7:4e39864f7b15 469
donatien 0:2ccb9960a044 470 if( ret > 0)
donatien 0:2ccb9960a044 471 {
donatien 0:2ccb9960a044 472 readLen += ret;
donatien 0:2ccb9960a044 473 continue;
donatien 0:2ccb9960a044 474 }
donatien 0:2ccb9960a044 475 else if( ret == 0 )
donatien 0:2ccb9960a044 476 {
donatien 7:4e39864f7b15 477 break;
donatien 7:4e39864f7b15 478 }
donatien 7:4e39864f7b15 479 else
donatien 7:4e39864f7b15 480 {
donatien 7:4e39864f7b15 481 ERR("Connection error (recv returned %d)", ret);
donatien 7:4e39864f7b15 482 *pReadLen = readLen;
donatien 11:390362de8c3f 483 return HTTP_CONN;
donatien 7:4e39864f7b15 484 }
donatien 7:4e39864f7b15 485 }
donatien 7:4e39864f7b15 486 DBG("Read %d bytes", readLen);
donatien 7:4e39864f7b15 487 *pReadLen = readLen;
donatien 11:390362de8c3f 488 return HTTP_OK;
donatien 7:4e39864f7b15 489 }
donatien 7:4e39864f7b15 490
donatien 11:390362de8c3f 491 HTTPResult HTTPClient::send(char* buf, size_t len) //0 on success, err code on failure
donatien 7:4e39864f7b15 492 {
donatien 7:4e39864f7b15 493 if(len == 0)
donatien 7:4e39864f7b15 494 {
donatien 7:4e39864f7b15 495 len = strlen(buf);
donatien 7:4e39864f7b15 496 }
donatien 7:4e39864f7b15 497 DBG("Trying to write %d bytes", len);
donatien 7:4e39864f7b15 498 size_t writtenLen = 0;
donatien 7:4e39864f7b15 499
donatien 7:4e39864f7b15 500 int ret;
donatien 7:4e39864f7b15 501 do
donatien 7:4e39864f7b15 502 {
donatien 11:390362de8c3f 503 ret = m_sock.send_all(buf + writtenLen, len - writtenLen, m_timeout);
donatien 7:4e39864f7b15 504 if(ret > 0)
donatien 7:4e39864f7b15 505 {
donatien 7:4e39864f7b15 506 writtenLen += ret;
donatien 7:4e39864f7b15 507 }
donatien 7:4e39864f7b15 508 else if( ret == 0 )
donatien 7:4e39864f7b15 509 {
donatien 0:2ccb9960a044 510 WARN("Connection was closed by server");
donatien 11:390362de8c3f 511 return HTTP_CLOSED; //Connection was closed by server
donatien 0:2ccb9960a044 512 }
donatien 0:2ccb9960a044 513 else
donatien 0:2ccb9960a044 514 {
donatien 0:2ccb9960a044 515 ERR("Connection error (recv returned %d)", ret);
donatien 11:390362de8c3f 516 return HTTP_CONN;
donatien 0:2ccb9960a044 517 }
donatien 7:4e39864f7b15 518 } while(writtenLen < len);
donatien 7:4e39864f7b15 519
donatien 0:2ccb9960a044 520 DBG("Written %d bytes", writtenLen);
donatien 11:390362de8c3f 521 return HTTP_OK;
donatien 0:2ccb9960a044 522 }
donatien 0:2ccb9960a044 523
donatien 11:390362de8c3f 524 HTTPResult HTTPClient::parseURL(const char* url, char* scheme, size_t maxSchemeLen, char* host, size_t maxHostLen, uint16_t* port, char* path, size_t maxPathLen) //Parse URL
donatien 0:2ccb9960a044 525 {
donatien 0:2ccb9960a044 526 char* schemePtr = (char*) url;
donatien 0:2ccb9960a044 527 char* hostPtr = (char*) strstr(url, "://");
donatien 0:2ccb9960a044 528 if(hostPtr == NULL)
donatien 0:2ccb9960a044 529 {
donatien 0:2ccb9960a044 530 WARN("Could not find host");
donatien 11:390362de8c3f 531 return HTTP_PARSE; //URL is invalid
donatien 0:2ccb9960a044 532 }
donatien 0:2ccb9960a044 533
donatien 0:2ccb9960a044 534 if( maxSchemeLen < hostPtr - schemePtr + 1 ) //including NULL-terminating char
donatien 0:2ccb9960a044 535 {
donatien 0:2ccb9960a044 536 WARN("Scheme str is too small (%d >= %d)", maxSchemeLen, hostPtr - schemePtr + 1);
donatien 11:390362de8c3f 537 return HTTP_PARSE;
donatien 0:2ccb9960a044 538 }
donatien 0:2ccb9960a044 539 memcpy(scheme, schemePtr, hostPtr - schemePtr);
donatien 0:2ccb9960a044 540 scheme[hostPtr - schemePtr] = '\0';
donatien 0:2ccb9960a044 541
donatien 0:2ccb9960a044 542 hostPtr+=3;
donatien 0:2ccb9960a044 543
donatien 0:2ccb9960a044 544 size_t hostLen = 0;
donatien 0:2ccb9960a044 545
donatien 0:2ccb9960a044 546 char* portPtr = strchr(hostPtr, ':');
donatien 0:2ccb9960a044 547 if( portPtr != NULL )
donatien 0:2ccb9960a044 548 {
donatien 0:2ccb9960a044 549 hostLen = portPtr - hostPtr;
donatien 0:2ccb9960a044 550 portPtr++;
donatien 8:45c8da29a1cf 551 if( sscanf(portPtr, "%hu", port) != 1)
donatien 0:2ccb9960a044 552 {
donatien 0:2ccb9960a044 553 WARN("Could not find port");
donatien 11:390362de8c3f 554 return HTTP_PARSE;
donatien 0:2ccb9960a044 555 }
donatien 0:2ccb9960a044 556 }
donatien 0:2ccb9960a044 557 else
donatien 0:2ccb9960a044 558 {
donatien 0:2ccb9960a044 559 *port=0;
donatien 0:2ccb9960a044 560 }
donatien 0:2ccb9960a044 561 char* pathPtr = strchr(hostPtr, '/');
donatien 0:2ccb9960a044 562 if( hostLen == 0 )
donatien 0:2ccb9960a044 563 {
donatien 0:2ccb9960a044 564 hostLen = pathPtr - hostPtr;
donatien 0:2ccb9960a044 565 }
donatien 0:2ccb9960a044 566
donatien 0:2ccb9960a044 567 if( maxHostLen < hostLen + 1 ) //including NULL-terminating char
donatien 0:2ccb9960a044 568 {
donatien 0:2ccb9960a044 569 WARN("Host str is too small (%d >= %d)", maxHostLen, hostLen + 1);
donatien 11:390362de8c3f 570 return HTTP_PARSE;
donatien 0:2ccb9960a044 571 }
donatien 0:2ccb9960a044 572 memcpy(host, hostPtr, hostLen);
donatien 0:2ccb9960a044 573 host[hostLen] = '\0';
donatien 0:2ccb9960a044 574
donatien 0:2ccb9960a044 575 size_t pathLen;
donatien 0:2ccb9960a044 576 char* fragmentPtr = strchr(hostPtr, '#');
donatien 0:2ccb9960a044 577 if(fragmentPtr != NULL)
donatien 0:2ccb9960a044 578 {
donatien 0:2ccb9960a044 579 pathLen = fragmentPtr - pathPtr;
donatien 0:2ccb9960a044 580 }
donatien 0:2ccb9960a044 581 else
donatien 0:2ccb9960a044 582 {
donatien 0:2ccb9960a044 583 pathLen = strlen(pathPtr);
donatien 0:2ccb9960a044 584 }
donatien 0:2ccb9960a044 585
donatien 0:2ccb9960a044 586 if( maxPathLen < pathLen + 1 ) //including NULL-terminating char
donatien 0:2ccb9960a044 587 {
donatien 0:2ccb9960a044 588 WARN("Path str is too small (%d >= %d)", maxPathLen, pathLen + 1);
donatien 11:390362de8c3f 589 return HTTP_PARSE;
donatien 0:2ccb9960a044 590 }
donatien 0:2ccb9960a044 591 memcpy(path, pathPtr, pathLen);
donatien 0:2ccb9960a044 592 path[pathLen] = '\0';
donatien 0:2ccb9960a044 593
donatien 11:390362de8c3f 594 return HTTP_OK;
donatien 0:2ccb9960a044 595 }