if a response to the http request is chunked (https://en.wikipedia.org/wiki/Chunked_transfer_encoding), it is not handled correctly by the serial_lte_modem.
Sometimes - e.g. if cloudflare is used, it is not possible to disable chunk encoding, so the serial_lte_modem app is unusable in these scenarios.
00> [00:03:22.707,031] <inf> httpc: Partial data received (743 bytes) 00> [00:03:22.707,061] <inf> httpc: All the data received (743 bytes) 00> [00:03:22.707,489] <inf> at_host: TX 00> 23 58 48 54 54 50 43 52 53 50 3a 37 34 33 2c 30 |#XHTTPCR SP:743,0 00> 0d 0a |.. 00> [00:03:22.709,625] <inf> at_host: TX 00> 22 7d 5d 2c 22 67 72 6f 75 70 22 3a 22 63 66 2d |"}],"gro up":"cf- 00> 6e 65 6c 22 2c 22 6d 61 78 5f 61 67 65 22 3a 36 |nel","ma x_age":6 00> 30 34 38 30 30 7d 0d 0a 4e 45 4c 3a 20 7b 22 72 |04800}.. NEL: {"r 00> 65 70 6f 72 74 5f 74 6f 22 3a 22 63 66 2d 6e 65 |eport_to ":"cf-ne 00> 6c 22 2c 22 6d 61 78 5f 61 67 65 22 3a 36 30 34 |l","max_ age":604 00> 38 30 30 7d 0d 0a 53 65 72 76 65 72 3a 20 63 6c |800}..Se rver: cl 00> 6f 75 64 66 6c 61 72 65 0d 0a 43 46 2d 52 41 59 |oudflare ..CF-RAY 00> 3a 20 35 66 31 62 30 35 63 34 39 66 63 35 64 34 |: 5f1b05 c49fc5d4 00> 33 66 2d 48 41 4d 0d 0a 0d 0a 44 65 76 69 63 65 |3f-HAM.. ..Device 00> 20 31 38 32 30 65 66 66 64 20 77 61 73 20 6e 6f | 1820eff d was no 00> 74 20 66 6f 75 6e 64 64 34 39 37 36 63 30 32 39 |t foundd 4976c029 00> 37 37 37 30 38 64 39 66 62 35 36 33 31 30 34 65 |77708d9f b563104e 00> 36 62 30 61 31 31 31 34 31 36 30 35 32 39 37 30 |6b0a1114 16052970 00> 33 34 3b 20 65 78 70 69 72 65 73 3d 53 75 6e 2c |34; expi res=Sun, 00> 20 31 33 2d 44 65 63 2d 32 30 20 31 39 3a 35 30 | 13-Dec- 20 19:50 00> 3a 33 34 20 47 4d 54 3b 20 70 61 74 68 3d 2f 3b |:34 GMT; path=/; 00> 20 64 6f 6d 61 69 6e 3d 2e 67 77 78 63 6c 6f 75 | domain= .gwxclou 00> 64 2e 63 6f 6d 3b 20 48 74 74 70 4f 6e 6c 79 3b |d.com; H ttpOnly; 00> 20 53 61 6d 65 53 69 74 65 3d 4c 61 78 0d 0a 43 | SameSit e=Lax..C 00> 46 2d 43 61 63 68 65 2d 53 74 61 74 75 73 3a 20 |F-Cache- Status: 00> 44 59 4e 41 4d 49 43 0d 0a 63 66 2d 72 65 71 75 |DYNAMIC. .cf-requ 00> 65 73 74 2d 69 64 3a 20 30 36 36 34 63 31 65 65 |est-id: 0664c1ee 00> 64 63 30 30 30 30 64 34 33 66 36 38 38 37 30 30 |dc0000d4 3f688700 00> 30 30 30 30 30 30 30 31 0d 0a 52 65 70 6f 72 74 |00000001 ..Report 00> 2d 54 6f 3a 20 7b 22 65 6e 64 70 6f 69 6e 74 73 |-To: {"e ndpoints 00> 22 3a 5b 7b 22 75 72 6c 22 3a 22 68 74 74 70 73 |":[{"url ":"https 00> 3a 5c 2f 5c 2f 61 2e 6e 65 6c 2e 63 6c 6f 75 64 |:\/\/a.n el.cloud 00> 66 6c 61 72 65 2e 63 6f 6d 5c 2f 72 65 70 6f 72 |flare.co m\/repor 00> 74 3f 73 3d 4e 65 75 57 66 46 50 6b 75 47 25 32 |t?s=NeuW fFPkuG%2 00> 46 4e 61 61 4f 4f 43 65 69 70 41 51 4d 59 75 53 |FNaaOOCe ipAQMYuS 00> 75 61 69 39 36 25 32 46 7a 4e 6c 61 49 6d 50 49 |uai96%2F zNlaImPI 00> 74 72 52 44 67 7a 45 4f 55 61 4a 41 6e 78 66 51 |trRDgzEO UaJAnxfQ 00> 75 47 4f 74 34 75 34 73 52 48 46 5a 65 74 49 67 |uGOt4u4s RHFZetIg 00> 34 34 7a 34 74 6c 54 53 45 32 57 62 49 70 42 38 |44z4tlTS E2WbIpB8 00> 46 58 43 36 67 71 57 52 5a 4c 43 38 4f 69 41 41 |FXC6gqWR ZLC8OiAA 00> 44 43 7a 70 59 77 58 49 34 77 25 33 44 25 33 44 |DCzpYwXI 4w%3D%3D 00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |........ ........ 00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |........ ........ 00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |........ ........ 00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |........ ........ 00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |........ ........ 00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |........ ........ 00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |........ ........ 00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |........ ........ 00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |........ ........ 00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |........ ........ 00> 00 00 00 00 00 00 00 |.......