1# HTTP Error Codes 2 3> **NOTE** 4> 5> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md). 6 7## 2300001 Protocol Not Supported 8 9**Error Message** 10 11Unsupported protocol. 12 13**Description** 14 15This error code is reported if the input protocol version is not supported by the server. 16 17**Cause** 18 19The input protocol version is not supported by the server. 20 21**Solution** 22 23Specify a protocol version supported by the server. 24 25## 2300003 Incorrect URL Format 26 27**Error Message** 28 29Invalid URL format or missing URL. 30 31**Description** 32 33This error code is reported if the URL format is incorrect. 34 35**Cause** 36 37The format of the input URL is incorrect. 38 39**Solution** 40 41Specify a URL of the correct format. 42 43## 2300005 Failed to Resolve the Domain Name of the Proxy Server 44 45**Error Message** 46 47Failed to resolve the proxy name. 48 49**Description** 50 51This error code is reported if the domain name of the proxy server cannot be resolved. 52 53**Cause** 54 55The URL of the proxy server is incorrect. 56 57**Solution** 58 59Specify a URL of the correct format. 60 61## 2300006 Failed to Resolve the Domain Name of the Host 62 63**Error Message** 64 65Failed to resolve the host name. 66 67**Description** 68 69This error code is reported if the domain name of the host cannot be resolved. 70 71**Cause** 72 731. The input URL is incorrect. 74 752. The network connection is abnormal. 76 77**Solution** 78 791. Specify a URL of the correct format. 80 812. Rectify network connection faults. 82 83## 2300007 Failed to Connect to the Server 84 85**Error Message** 86 87Failed to connect to the server. 88 89**Description** 90 91This error code is reported if the server connection failed. 92 93**Cause** 94 95The format of the input URL is incorrect. 96 97**Solution** 98 99Specify a URL of the correct format. 100 101## 2300008 Invalid Data Returned by the Server 102 103**Error Message** 104 105Invalid server response. 106 107**Description** 108 109This error code is reported if the data returned by the server is invalid. 110 111**Cause** 112 113The server encounters an error and returns data in non-HTTP format. 114 115**Solution** 116 117Check the server implementation. 118 119## 2300009 Access to Remote Resources Denied 120 121**Error Message** 122 123Access to the remote resource denied. 124 125**Description** 126 127This error code is reported if the access to remote resources is denied by the server. 128 129**Cause** 130 131The access to the specified resource is denied by the server. 132 133**Solution** 134 135Check whether access to the requested resource is allowed. 136 137## 2300016 HTT2 Framing Layer Error 138 139**Error Message** 140 141Error in the HTTP2 framing layer. 142 143**Description** 144 145This error code is reported if an error occurs on the HTTP2 framing layer. 146 147**Cause** 148 149HTTP2 is not supported by the server. 150 151**Solution** 152 153Capture and analyze packets to check whether HTTP2 is supported by the server. 154 155## 2300018 Incomplete Data Returned by the Server 156 157**Error Message** 158 159Transferred a partial file. 160 161**Description** 162 163This error code is reported if data returned by the server is incomplete. 164 165**Cause** 166 167This problem is probable due to server implementation. 168 169**Solution** 170 171Check the server implementation. 172 173## 2300023 Failed to Write Received Data to a Disk or Application 174 175**Error Message** 176 177Failed to write the received data to the disk or application. 178 179**Description** 180 181This error code is reported if an error occurs while writing received data to the disk or application. 182 183**Cause** 184 185- The application does not have the permission to write files or the file to be downloaded exceeds 5 MB. 186 187- The **destroy** function is called before the data of the last request is fully received. 188 189**Solution** 190 191Check the application permission and the size of the file to be downloaded. 192 193## 2300025 Failed to Upload Data 194 195**Error Message** 196 197Upload failed. 198 199**Description** 200 201This error code is reported if data upload fails. 202 203**Cause** 204 205The file is too large or the network is faulty. The server may reject the **STOR** command if FTP is used. The error buffer usually contains the reason from the server. 206 207**Solution** 208 209Check the file size and network status. 210 211## 2300026 Failed to Open or Read Local Data from a File or Application 212 213**Error Message** 214 215Failed to open or read local data from the file or application. 216 217**Description** 218 219This error code is reported if an error occurs while opening or reading local data from a file or application. 220 221**Cause** 222 223The application does not have the data read permission. 224 225**Solution** 226 227Check the permissions granted to the application. 228 229## 2300027 Insufficient Memory 230 231**Error Message** 232 233Out of memory. 234 235**Description** 236 237This error code is reported if the memory is insufficient. 238 239**Cause** 240 241This error code is reported if the memory is insufficient. 242 243**Solution** 244 245Check the system memory. 246 247## 2300028 Operation Timeout 248 249**Error Message** 250 251Operation timeout. 252 253**Description** 254 255This error code is reported if the operation times out. 256 257**Cause** 258 259The TCP connection or the read/write operation times out. 260 261**Solution** 262 263Check whether the network is stable and the signal strength is strong. If the network is normal, check whether the server is overloaded or service processing is slow. 264 265## 2300047 Maximum Redirections Reached 266 267**Error Message** 268 269The number of redirections reaches the maximum allowed. 270 271**Description** 272 273This error code is reported if the number of redirections reaches the maximum. 274 275**Cause** 276 277Redirections are too frequent. 278 279**Solution** 280 281Check the server implementation. 282 283## 2300052 No Content Returned by the Server 284 285**Error Message** 286 287The server returned nothing (no header or data). 288 289**Description** 290 291This error code is reported if no content is returned by the server. 292 293**Cause** 294 295This problem is probable due to server implementation. 296 297**Solution** 298 299Check the server implementation. 300 301## 2300055 Failed to Send Network Data 302 303**Error Message** 304 305Failed to send data to the peer. 306 307**Description** 308 309This error code is reported if an error occurs while sending network data to the peer end. 310 311**Cause** 312 313This problem is probable due to a network fault. 314 315**Solution** 316 317Rectify network faults. 318 319## 2300056 Failed to Receive Network Data 320 321**Error Message** 322 323Failed to receive data from the peer. 324 325**Description** 326 327This error code is reported if an error occurs while receiving network data from the peer end. 328 329**Cause** 330 331This problem is probable due to a network fault. 332 333**Solution** 334 335Rectify network faults. 336 337## 2300058 Local SSL Certificate Error 338 339**Error Message** 340 341Local SSL certificate error. 342 343**Description** 344 345This error code is reported if the local SSL certificate is incorrect. 346 347**Cause** 348 349The format of the SSL certificate is incorrect. 350 351**Solution** 352 353Check the format of the SSL certificate. 354 355## 2300059 Failed to Use the Specified SSL Cipher Algorithm 356 357**Error Message** 358 359The specified SSL cipher cannot be used. 360 361**Description** 362 363This error code is reported if the specified SSL cipher algorithm cannot be used. 364 365**Cause** 366 367The system does not support the cipher algorithm negotiated between the client and server. 368 369**Solution** 370 371Capture and analyze packets to check whether the cipher algorithm is supported. 372 373## 2300060 Incorrect SSL Certificate or SSH Key of the Remote Server 374 375**Error Message** 376 377Invalid SSL peer certificate or SSH remote key. 378 379**Description** 380 381This error code is reported if the SSL certificate or SSH key of the remote server is incorrect. 382 383**Cause** 384 385It is probable that the server identity verification fails because the certificate has expired. 386 387**Solution** 388 389Check whether the certificate is valid. 390 391## 2300061 Unrecognized or Incorrect HTTP Encoding Format 392 393**Error Message** 394 395Invalid HTTP encoding format. 396 397**Description** 398 399This error code is reported if the HTTP encoding format cannot be identified or is incorrect. 400 401**Cause** 402 403The HTTP encoding format is incorrect. 404 405**Solution** 406 407Check the server implementation. Currently, only gzip encoding is supported. 408 409## 2300063 Maximum File Size Exceeded 410 411**Error Message** 412 413Maximum file size exceeded. 414 415**Description** 416 417This error code is reported if the maximum file size is exceeded. 418 419**Cause** 420 421The downloaded file is too large. 422 423**Solution** 424 425Check the server implementation. 426 427## 2300070 Insufficient Server Disk Space 428 429**Error Message** 430 431Remote disk full. 432 433**Description** 434 435This error code is reported if the server disk space is insufficient. 436 437**Cause** 438 439The server disk is full. 440 441**Solution** 442 443Check the server disk space. 444 445## 2300073 Uploaded File Already Exists 446 447**Error Message** 448 449Remote file already exists. 450 451**Description** 452 453This error code is reported if the server finds that the uploaded file already exists. 454 455**Cause** 456 457The uploaded file already exists. 458 459**Solution** 460 461Check the server for files that already exist. 462 463## 2300077 No SSL CA Certificate or Access Permission 464 465**Error Message** 466 467The SSL CA certificate does not exist or is unaccessible. 468 469**Description** 470 471This error code is reported if the SSL CA certificate does not exist or the access permission is not available. 472 473**Cause** 474 475The SSL CA certificate is not available or the access permission is not granted. 476 477**Solution** 478 479Check whether the SSL CA certificate exists or the access permission is granted. 480 481## 2300078 URL Requested File Not Found 482 483**Error Message** 484 485Remote file not found. 486 487**Description** 488 489This error code is reported if the file requested by the specified URL does not exist. 490 491**Cause** 492 493This error code is reported if the file requested by the specified URL does not exist. 494 495**Solution** 496 497Check whether the file requested by the specified URL exists. 498 499## 2300094 Identity Verification Failed 500 501**Error Message** 502 503Authentication error. 504 505**Description** 506 507This error code is reported if identity verification fails. 508 509**Cause** 510 511The specified identity verification field does not match that on the server. 512 513**Solution** 514 515Check whether the specified identity verification field matches that on the server. 516 517## 2300997 Plaintext HTTP Access Intercepted 518 519**Error Message** 520 521Cleartext traffic not permitted. 522 523**Description** 524 525This error code is reported if plaintext HTTP access is intercepted. 526 527**Cause** 528 529The plaintext access is not allowed in the **network_config.json** file. 530 531**Solution** 532 533Check the setting of the **cleartextTrafficPermitted** field in the **network_config.json** file. 534 535## 2300998 Domain Access Denied 536 537**Error Message** 538 539It is not allowed to access this domain. 540 541**Description** 542 543This error code is reported if access to a certain domain is prohibited. 544 545**Cause** 546 547An incorrect server domain name is configured for the atomic service. 548 549**Solution** 550 551Configure a correct server domain name for the atomic service. 552 553## 2300999 Unknown Error 554 555**Error Message** 556 557Unknown error. 558 559**Description** 560 561This error code is reported if an unknown error occurs. 562 563**Cause** 564 565An unknown error occurs. 566 567**Solution** 568 569Try again or contact technical support. 570