1*1c60b9acSAndroid Build Coastguard Worker# lws minimal http client POST 2*1c60b9acSAndroid Build Coastguard Worker 3*1c60b9acSAndroid Build Coastguard WorkerThis example demonstrates a multipart POST to 4*1c60b9acSAndroid Build Coastguard Worker 5*1c60b9acSAndroid Build Coastguard Workerhttps://libwebsockets.org/testserver/formtest 6*1c60b9acSAndroid Build Coastguard Worker 7*1c60b9acSAndroid Build Coastguard Workersetting both a form variable and uploading a 8*1c60b9acSAndroid Build Coastguard Workershort file. 9*1c60b9acSAndroid Build Coastguard Worker 10*1c60b9acSAndroid Build Coastguard WorkerThe result of the POST form processing is captured 11*1c60b9acSAndroid Build Coastguard Workerand displayed in a hexdump. 12*1c60b9acSAndroid Build Coastguard Worker 13*1c60b9acSAndroid Build Coastguard WorkerThis is programmatically POSTing to the same 14*1c60b9acSAndroid Build Coastguard Workerform you can access at 15*1c60b9acSAndroid Build Coastguard Worker 16*1c60b9acSAndroid Build Coastguard Workerhttps://libwebsockets.org/testserver 17*1c60b9acSAndroid Build Coastguard Worker 18*1c60b9acSAndroid Build Coastguard Workerin the "POST" tab with file upload. 19*1c60b9acSAndroid Build Coastguard Worker 20*1c60b9acSAndroid Build Coastguard WorkerBy default the client action occurs using http/2 if 21*1c60b9acSAndroid Build Coastguard Workeryour lws was built with `-DLWS_WITH_HTTP2=1`. 22*1c60b9acSAndroid Build Coastguard Worker 23*1c60b9acSAndroid Build Coastguard Worker## build 24*1c60b9acSAndroid Build Coastguard Worker 25*1c60b9acSAndroid Build Coastguard Worker``` 26*1c60b9acSAndroid Build Coastguard Worker $ cmake . && make 27*1c60b9acSAndroid Build Coastguard Worker``` 28*1c60b9acSAndroid Build Coastguard Worker 29*1c60b9acSAndroid Build Coastguard Worker## usage 30*1c60b9acSAndroid Build Coastguard Worker 31*1c60b9acSAndroid Build Coastguard Worker``` 32*1c60b9acSAndroid Build Coastguard Worker $ ./lws-minimal-http-client-post 33*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:10:7891] USER: LWS minimal http client - POST 34*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:10:7905] NOTICE: Creating Vhost 'default' (serving disabled), 1 protocols, IPv6 on 35*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:10:7984] NOTICE: created client ssl context for default 36*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:12:8444] USER: LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER 37*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:12:8444] USER: LWS_CALLBACK_CLIENT_HTTP_WRITEABLE 38*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:12:8445] USER: LWS_CALLBACK_CLIENT_HTTP_WRITEABLE 39*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:12:8445] USER: LWS_CALLBACK_CLIENT_HTTP_WRITEABLE 40*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1437] USER: LWS_CALLBACK_CLIENT_HTTP_WRITEABLE 41*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1440] USER: LWS_CALLBACK_CLIENT_HTTP_WRITEABLE 42*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1440] USER: RECEIVE_CLIENT_HTTP_READ: read 402 43*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 44*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 0000: 3C 68 74 6D 6C 3E 3C 62 6F 64 79 3E 3C 68 31 3E <html><body><h1> 45*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 0010: 46 6F 72 6D 20 72 65 73 75 6C 74 73 20 28 61 66 Form results (af 46*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 0020: 74 65 72 20 75 72 6C 64 65 63 6F 64 69 6E 67 29 ter urldecoding) 47*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 0030: 3C 2F 68 31 3E 3C 74 61 62 6C 65 3E 3C 74 72 3E </h1><table><tr> 48*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 0040: 3C 74 64 3E 4E 61 6D 65 3C 2F 74 64 3E 3C 74 64 <td>Name</td><td 49*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 0050: 3E 4C 65 6E 67 74 68 3C 2F 74 64 3E 3C 74 64 3E >Length</td><td> 50*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 0060: 56 61 6C 75 65 3C 2F 74 64 3E 3C 2F 74 72 3E 3C Value</td></tr>< 51*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 0070: 74 72 3E 3C 74 64 3E 3C 62 3E 74 65 78 74 3C 2F tr><td><b>text</ 52*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 0080: 62 3E 3C 2F 74 64 3E 3C 74 64 3E 31 33 3C 2F 74 b></td><td>13</t 53*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 0090: 64 3E 3C 74 64 3E 6D 79 20 74 65 78 74 20 66 69 d><td>my text fi 54*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 00A0: 65 6C 64 3C 2F 74 64 3E 3C 2F 74 72 3E 3C 74 72 eld</td></tr><tr 55*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 00B0: 3E 3C 74 64 3E 3C 62 3E 73 65 6E 64 3C 2F 62 3E ><td><b>send</b> 56*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1441] NOTICE: 00C0: 3C 2F 74 64 3E 3C 74 64 3E 30 3C 2F 74 64 3E 3C </td><td>0</td>< 57*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 00D0: 74 64 3E 4E 55 4C 4C 3C 2F 74 64 3E 3C 2F 74 72 td>NULL</td></tr 58*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 00E0: 3E 3C 74 72 3E 3C 74 64 3E 3C 62 3E 66 69 6C 65 ><tr><td><b>file 59*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 00F0: 3C 2F 62 3E 3C 2F 74 64 3E 3C 74 64 3E 30 3C 2F </b></td><td>0</ 60*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 0100: 74 64 3E 3C 74 64 3E 4E 55 4C 4C 3C 2F 74 64 3E td><td>NULL</td> 61*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 0110: 3C 2F 74 72 3E 3C 74 72 3E 3C 74 64 3E 3C 62 3E </tr><tr><td><b> 62*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 0120: 75 70 6C 6F 61 64 3C 2F 62 3E 3C 2F 74 64 3E 3C upload</b></td>< 63*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 0130: 74 64 3E 30 3C 2F 74 64 3E 3C 74 64 3E 4E 55 4C td>0</td><td>NUL 64*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 0140: 4C 3C 2F 74 64 3E 3C 2F 74 72 3E 3C 2F 74 61 62 L</td></tr></tab 65*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 0150: 6C 65 3E 3C 62 72 3E 3C 62 3E 66 69 6C 65 6E 61 le><br><b>filena 66*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 0160: 6D 65 3A 3C 2F 62 3E 20 6D 79 66 69 6C 65 2E 74 me:</b> myfile.t 67*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 0170: 78 74 2C 20 3C 62 3E 6C 65 6E 67 74 68 3C 2F 62 xt, <b>length</b 68*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 0180: 3E 20 34 34 3C 2F 62 6F 64 79 3E 3C 2F 68 74 6D > 44</body></htm 69*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 0190: 6C 3E l> 70*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] NOTICE: 71*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1442] USER: LWS_CALLBACK_COMPLETED_CLIENT_HTTP 72*1c60b9acSAndroid Build Coastguard Worker[2018/04/03 13:13:13:1455] USER: Completed 73*1c60b9acSAndroid Build Coastguard Worker``` 74*1c60b9acSAndroid Build Coastguard Worker 75