Tcl

Example: Http.DownloadAppend method

Demonstrates the DownloadAppend method. Tcl

load ./chilkat.dll

set success 0

set success 0

set targetPath "c:/temp/qa_output/download.txt"

set http [new_CkHttp]

CkHttp_put_KeepResponseBody $http 1

# Assume the target file in the local filesystem does not yet exist.
set success [CkHttp_DownloadAppend $http "https://chilkatsoft.com/testData/helloWorld.txt" $targetPath]
set statusCode [CkHttp_get_LastStatus $http]
if {$statusCode == 0} then {
    # Unable to either send the request or get the response.
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    exit
}

# Should be 200.
puts "Response status code: $statusCode"

# Examine the contents of the file.
set sb [new_CkStringBuilder]

CkStringBuilder_LoadFile $sb $targetPath "utf-8"
puts [CkStringBuilder_getAsString $sb]

# Output: 
# Response status code: 200
# Hello World!

# Download another text file and append to the target file.
set success [CkHttp_DownloadAppend $http "https://chilkatsoft.com/testData/this_is_a_test.txt" $targetPath]
set statusCode [CkHttp_get_LastStatus $http]
if {$statusCode == 0} then {
    # Unable to either send the request or get the response.
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkStringBuilder $sb
    exit
}

# Should be 200.
puts "Response status code: $statusCode"

# Examine the contents of the file.
CkStringBuilder_LoadFile $sb $targetPath "utf-8"
puts [CkStringBuilder_getAsString $sb]

# Output:
# Response status code: 200
# Hello World!This is a Test.

# Delete the local target file.
set fac [new_CkFileAccess]

CkFileAccess_FileDelete $fac $targetPath

# Try to download a file that does not exist:
set success [CkHttp_DownloadAppend $http "https://chilkatsoft.com/testData/does_not_exist.txt" $targetPath]
set statusCode [CkHttp_get_LastStatus $http]
if {$statusCode == 0} then {
    # Unable to either send the request or get the response.
    puts [CkHttp_lastErrorText $http]
} else {
    # We got a response, and we already know it wasn't a 200 success response.
    # It should be a 404 not found.
    puts "Response status code: $statusCode"
    # Examine the response body.
    puts "Response body:"
    puts [CkHttp_lastResponseBody $http]
}


delete_CkHttp $http
delete_CkStringBuilder $sb
delete_CkFileAccess $fac