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Add scripts in the CreateSession for capturing the session ID and assign it to a parameter.
A CreateSession request looks like the following:
web_custom_request("CreateSession", "URL=http://192.168.178.125:5001/api/ServerApi/CreateSession", "Method=POST", "Resource=0", "RecContentType=application/json", "Referer=", "Snapshot=t60.inf", "Mode=HTTP", "EncType=application/json;charset=UTF-8", "Body={\"version\":\"1.0\",\"requestid\":\"52C33A54-6687-40ef-ACA8-4FC34B8066CE\",\"appname\": \"psapi4loadrunner\",\"namespace\":\"Psapi4loadrunner\",\"session\":null,\"type\":31,\ "transaction\":null,\"content\":{\"createsession\":{\"securestring\":\"" "eyJ0aW1lc3RhbXAiOjE2MjQyNjk4MjYsInBheWxvYWQiOiJuQStOK1ZKb1pqRkxFRzBsT0QzMnAzZmtsVlc2Qk xydGZuQ2FqcUJvcTNTY0FORDdYeDZmTDFnMVFGUFhNdk9EVGpWTjgyVERLOTdSMHhHVEhSMmxXZz09Iiwic2lnbm F0dXJlIjoiOUpicHc2OUFwWFYxcEg4UTEraDRodHh4SHlGVnptS2lhWmdNZmJQS1pP UmdBVW9JcHdoTzNTY2krbnltV2NTZ2lidzUyZHhsYjluQlpjQXgyUmd4S2c9PSJ9\"}}}", LAST);
You need to add the following code above the CreateSession request:
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Add a web_set_max_html_param_len function to be the first line in the script file. It would set the maximum length of the HTML string which LoadRunner can retrieve:
web_set_max_html_param_len("262144");
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Add a web_reg_save_param function above CreateRequest to capture the session ID and assign it to the parameter “gs_SessionID”.
web_reg_save_param("gs_SessionID","LB=\"sessionid\":\"","RB=\"},\"graceperiod","Search=Body",LAST);
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Replace the session ID with the parameter every time it occurs.
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Identify the session ID that needs to be correlated. You may do a global search in the script for “session” which is followed by the session ID.
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Replace every occurrence of the session ID with the parameter <gs_SessionID>.
Taking the ConnectAndCreateTransaction request as an example. The following is the original request. You see the session ID is the string following the “session”.
web_custom_request("ConnectAndCreateTransaction", "URL=http://192.168.178.125:5001/api/ServerApi/ConnectAndCreateTransaction", "Method=POST", "Resource=0", "RecContentType=application/json", "Referer=", "Snapshot=t65.inf", "Mode=HTTP", "EncType=application/json;charset=UTF-8", "Body={\"version\":\"1.0\",\"requestid\":\"D024C3D8-FE54-490e-BAB6-23F8CAB3D8F3\",\"appname\":\"psapi4loadrunner\", \"namespace\":\"Psapi4loadrunner\",\"session\":\"""eyJ0aW1lc3RhbXAiOjE2MjQyNjk4MjgsInBheWxvYWQiOiJ3bmFMV0FuZ2 14S2RnQlhqbFVqQlRNNmswRVUxN2gwaFhpb3pEbm9SakkyOUtkYk9kWlMwWGgxeWtPdTlYRFI5QTFITXZKTVcvRW9IbEppQjY4MVhBQXhHU3U rZlA0Y3YvOEVjMWF5OVNxTzlSUFpEYjJPYTIrektQUmRPSXV2L25yVXYwdDhGNmpzRUY0TzVqUTROMmVhc1piY0c5NkpJTUVCUi9jK25OUEFE cTNiZ1BxWTZtL2dodlhBYW84U3AiLCJzaWduYXR1cmUiOiJQTEo3WDJaRnBVV1FyOXcvK1dwaG4rWnRWK3BPc0taRUhwd0ZReWNYQ2tkZ3RVS WRuUW52QVh5VlgvUUpDTlZFZUVFR0twcGtIOUs0c3FQTDB3SVZqQT09In0=\",\"type\":7,\"transaction\":null,\"content\": {\"connect""\":{\"cachegroup\":\"\",\"cachename\":\"\",\"transactionname\":\"sqlca\",\"params\":\"""eyJ0aW1lc 3RhbXAiOjE2MjQyNjk4MjgsInBheWxvYWQiOiJQK1kvMk5yWmVTUWY0dElIempGMy9vdlk0VFhWY0NWNlFrd2UxVGJkSENHTFNnc2R0allOZU dtNDN2WlB6dFFCLzk0Ulk4dVFOYkNISnZqblltQ3RoTUZCRFJaS21YZmtDWExPRkdjbWt2WXFkSXBEcDRhN0NLUDBVK1gxOGhQQVhiNjJoSXA 3aWp2S0FkZEpNOFU3QmxXbEI5MGx4ZEp5OVVTNU00NzZhaGxZMlRSYlF1NTlWcksxdER0VngxbERKRU80cGFvRVVkM0cxQk5RbUtrcVBqaTda MDFPNDZ3UmNvVVp6MlB1TXkrUG1VNVlvWmF0eUhxRjN3ZExyRlZLIiwic2lnbmF0dXJlIjoiVGJoR2dEeEtLWFg2V3V6bTIwei94WXdKb2FFW TNvUlgxSTkzeDJiS1lncjd0MmFXcmxaUkp0TTh6dEZpVUc4R1Y3VTgrdk""xZL2pQK29lZGxTdW0yWWc9PSJ9\"}}}", LAST);
After replacing the occurrence of the session ID with the parameter <gs_SessionID>, the script will look like the following:
web_custom_request("ConnectAndCreateTransaction", "URL=http://192.168.178.125:5001/api/ServerApi/ConnectAndCreateTransaction", "Method=POST", "Resource=0", "RecContentType=application/json", "Referer=", "Snapshot=t65.inf", "Mode=HTTP", "EncType=application/json;charset=UTF-8", "Body={\"version\":\"1.0\",\"requestid\":\"D024C3D8-FE54-490e-BAB6-23F8CAB3D8F3\", \"appname\":\"psapi4loadrunner\",\"namespace\":\"Psapi4loadrunner\", \"session\":\"""<gs_SessionID>\",\"type\":7,\"transaction\":null,\"content\" :{\"connect""\":{\"cachegroup\":\"\",\"cachename\":\"\",\"transactionname\":\"sqlca\",\"params\":\ """eyJ0aW1lc3RhbXAiOjE2MjQyNjk4MjgsInBheWxvYWQiOiJQK1kvMk5yWmVTUWY0dElIempGMy9vdlk0VFhWY0NWNlFrd2U xVGJkSENHTFNnc2R0allOZUdtNDN2WlB6dFFCLzk0Ulk4dVFOYkNISnZqblltQ3RoTUZCRFJaS21YZmtDW ExPRkdjbWt2WXFkSXBEcDRhN0NLUDBVK1gxOGhQQVhiNjJoSXA3aWp2S0FkZEpNOFU3QmxXbEI5MGx4ZEp5OVVTNU00NzZhaGx ZMlRSYlF1NTlWcksxdER0VngxbERKRU80cGFvRVVkM0cxQk5RbUtrcVBqaTdaMDFPNDZ3UmNvVVp6MlB1T XkrUG1VNVlvWmF0eUhxRjN3ZExyRlZLIiwic2lnbmF0dXJlIjoiVGJoR2dEeEtLWFg2V3V6bTIwei94WXdKb2FFWTNvUlgxSTk zeDJiS1lncjd0MmFXcmxaUkp0TTh6dEZpVUc4R1Y3VTgrdk""xZL2pQK29lZGxTdW0yWWc9PSJ9\"}}}", LAST);
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