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 55This error code is reported if the 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- The **destroy** function is called before the data of the last request is fully received. 187 188**Solution** 189 190Check the application permission and the size of the file to be downloaded. 191 192## 2300025 Failed to Upload Data 193 194**Error Message** 195 196Upload failed. 197 198**Description** 199 200This error code is reported if data upload fails. 201 202**Cause** 203 204The file is too large or the network is faulty. The server may reject the **STOR** command if FTP is used. 205 206**Solution** 207 208Check the file size and network status. 209 210## 2300026 Failed to Open or Read Local Data from a File or Application 211 212**Error Message** 213 214Failed to open or read local data from the file or application. 215 216**Description** 217 218This error code is reported if an error occurs while opening or reading local data from a file or application. 219 220**Cause** 221 222The application does not have the data read permission. 223 224**Solution** 225 226Check the permissions granted to the application. 227 228## 2300027 Insufficient Memory 229 230**Error Message** 231 232Out of memory. 233 234**Description** 235 236This error code is reported if the memory is insufficient. 237 238**Cause** 239 240This error code is reported if the memory is insufficient. 241 242**Solution** 243 244Check the system memory. 245 246## 2300028 Operation Timeout 247 248**Error Message** 249 250Operation timeout. 251 252**Description** 253 254This error code is reported if the operation times out. 255 256**Cause** 257 258The TCP connection or the read/write operation times out. 259 260**Solution** 261 262Rectify network faults. 263 264## 2300047 Maximum Redirections Reached 265 266**Error Message** 267 268The number of redirections reaches the maximum allowed. 269 270**Description** 271 272This error code is reported if the number of redirections reaches the maximum. 273 274**Cause** 275 276Redirection is performed too frequently. 277 278**Solution** 279 280Check the server implementation. 281 282## 2300052 No Content Returned by the Server 283 284**Error Message** 285 286The server returned nothing (no header or data). 287 288**Description** 289 290This error code is reported if no content is returned by the server. 291 292**Cause** 293 294This problem is probable due to server implementation. 295 296**Solution** 297 298Check the server implementation. 299 300## 2300055 Failed to Send Network Data 301 302**Error Message** 303 304Failed to send data to the peer. 305 306**Description** 307 308This error code is reported if an error occurs while sending network data to the peer end. 309 310**Cause** 311 312This problem is probable due to a network fault. 313 314**Solution** 315 316Rectify network faults. 317 318## 2300056 Failed to Receive Network Data 319 320**Error Message** 321 322Failed to receive data from the peer. 323 324**Description** 325 326This error code is reported if an error occurs while receiving network data from the peer end. 327 328**Cause** 329 330This problem is probable due to a network fault. 331 332**Solution** 333 334Rectify network faults. 335 336## 2300058 Local SSL Certificate Error 337 338**Error Message** 339 340Local SSL certificate error. 341 342**Description** 343 344This error code is reported if the local SSL certificate is incorrect. 345 346**Cause** 347 348The format of the SSL certificate is incorrect. 349 350**Solution** 351 352Check the format of the SSL certificate. 353 354## 2300059 Failed to Use the Specified SSL Cipher Algorithm 355 356**Error Message** 357 358The specified SSL cipher cannot be used. 359 360**Description** 361 362This error code is reported if the specified SSL cipher algorithm cannot be used. 363 364**Cause** 365 366The system does not support the cipher algorithm negotiated between the client and server. 367 368**Solution** 369 370Capture and analyze packets to check whether the cipher algorithm is supported. 371 372## 2300060 Incorrect SSL Certificate or SSH Key of the Remote Server 373 374**Error Message** 375 376Invalid SSL peer certificate or SSH remote key. 377 378**Description** 379 380This error code is reported if the SSL certificate or SSH key of the remote server is incorrect. 381 382**Cause** 383 384It is probable that the server identity verification fails because the certificate has expired. 385 386**Solution** 387 388Check whether the certificate is valid. 389 390## 2300061 Unrecognized or Incorrect HTTP Encoding Format 391 392**Error Message** 393 394Invalid HTTP encoding format. 395 396**Description** 397 398This error code is reported if the HTTP encoding format cannot be identified or is incorrect. 399 400**Cause** 401 402The HTTP encoding format is incorrect. 403 404**Solution** 405 406Check the server implementation. Currently, only gzip encoding is supported. 407 408## 2300063 Maximum File Size Exceeded 409 410**Error Message** 411 412Maximum file size exceeded. 413 414**Description** 415 416This error code is reported if the maximum file size is exceeded. 417 418**Cause** 419 420The downloaded file is too large. 421 422**Solution** 423 424Check the server implementation. 425 426## 2300070 Insufficient Server Disk Space 427 428**Error Message** 429 430Remote disk full. 431 432**Description** 433 434This error code is reported if the server disk space is insufficient. 435 436**Cause** 437 438The server disk is full. 439 440**Solution** 441 442Check the server disk space. 443 444## 2300073 Uploaded File Already Exists 445 446**Error Message** 447 448Remote file already exists. 449 450**Description** 451 452This error code is reported if the server finds that the uploaded file already exists. 453 454**Cause** 455 456The uploaded file already exists. 457 458**Solution** 459 460Check the server for files that already exist. 461 462## 2300077 No SSL CA Certificate or Access Permission 463 464**Error Message** 465 466The SSL CA certificate does not exist or is unaccessible. 467 468**Description** 469 470This error code is reported if the SSL CA certificate does not exist or the access permission is not available. 471 472**Cause** 473 474The SSL CA certificate is not available or the access permission is not granted. 475 476**Solution** 477 478Check whether the SSL CA certificate exists or the access permission is granted. 479 480## 2300078 URL Requested File Not Found 481 482**Error Message** 483 484Remote file not found. 485 486**Description** 487 488This error code is reported if the file requested by the specified URL does not exist. 489 490**Cause** 491 492The file requested by the specified URL does not exist. 493 494**Solution** 495 496Check whether the file requested by the specified URL exists. 497 498## 2300094 Identity Verification Failed 499 500**Error Message** 501 502Authentication error. 503 504**Description** 505 506This error code is reported if identity verification fails. 507 508**Cause** 509 510The specified identity verification field does not match that on the server. 511 512**Solution** 513 514Check whether the specified identity verification field matches that on the server. 515 516## 2300998 Domain Access Denied 517 518**Error Message** 519 520It is not allowed to access this domain. 521 522**Description** 523 524This error code is reported if access to a certain domain is prohibited. 525 526**Cause** 527 528An incorrect server domain name is configured for the atomic service. 529 530**Solution** 531 532Configure a correct server domain name for the atomic service. 533 534## 2300999 Unknown Error 535 536**Error Message** 537 538Unknown error. 539 540**Description** 541 542This error code is reported if an unknown error occurs. 543 544**Cause** 545 546An unknown error occurs. 547 548**Solution** 549 550Try again or contact technical support. 551