(Objective-C) Making SOAP Requests using the REST API

There's no reason a SOAP request cannot be sent using the REST API. It's only a matter of adding a SOAP specific header, and providing the SOAP XML request body. The response body is the SOAP response XML.

This example sends a request to ws.cdyne.com to get city weather by zip code.

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#import <CkoRest.h>
#import <CkoXml.h>
#import <NSString.h>

// Demonstrates how to do a SOAP request using the REST API.

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// --------------------------------------------------------------------------------
// Also see Chilkat's Online WSDL Code Generator
// to generate code and SOAP Request and Response XML for each operation in a WSDL.
// --------------------------------------------------------------------------------

CkoRest *rest = [[CkoRest alloc] init];

// This is the request to be sent:

// POST /WeatherWS/Weather.asmx HTTP/1.1
// Host: wsf.cdyne.com
// Content-Type: text/xml; charset=utf-8
// Content-Length: length
// SOAPAction: "http://ws.cdyne.com/WeatherWS/GetCityWeatherByZIP"
// 
// <?xml version="1.0" encoding="utf-8"?>
// <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
//   <soap:Body>
//     <GetCityWeatherByZIP xmlns="http://ws.cdyne.com/WeatherWS/">
//       <ZIP>string</ZIP>
//     </GetCityWeatherByZIP>
//   </soap:Body>
// </soap:Envelope>

// Note: The application does not need to set the Host or Content-Length headers.
// Chilkat will automatically add these headers.

// Make the initial connection (without sending a request yet).
BOOL bTls = NO;
int port = 80;
BOOL bAutoReconnect = YES;
// In this particular case, it is important to connect to "wsf.cdyne.com", not "ws.cdyne.com"...
BOOL success = [rest Connect: @"wsf.cdyne.com" port: [NSNumber numberWithInt: port] tls: bTls autoReconnect: bAutoReconnect];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// Add request headers:
success = [rest AddHeader: @"Content-Type" value: @"text/xml; charset=utf-8"];
success = [rest AddHeader: @"SOAPAction" value: @"http://ws.cdyne.com/WeatherWS/GetCityWeatherByZIP"];

// Build the SOAP XML request body.
CkoXml *soapXml = [[CkoXml alloc] init];

soapXml.Tag = @"soap:Envelope";
success = [soapXml AddAttribute: @"xmlns:xsi" value: @"http://www.w3.org/2001/XMLSchema-instance"];
success = [soapXml AddAttribute: @"xmlns:xsd" value: @"http://www.w3.org/2001/XMLSchema"];
success = [soapXml AddAttribute: @"xmlns:soap" value: @"http://schemas.xmlsoap.org/soap/envelope/"];

[soapXml NewChild2: @"soap:Body" content: @""];
success = [soapXml GetChild2: [NSNumber numberWithInt: 0]];
[soapXml NewChild2: @"GetCityWeatherByZIP" content: @""];
success = [soapXml GetChild2: [NSNumber numberWithInt: 0]];
success = [soapXml AddAttribute: @"xmlns" value: @"http://ws.cdyne.com/WeatherWS/"];
[soapXml NewChild2: @"ZIP" content: @"60187"];
[soapXml GetRoot2];

NSLog(@"%@",[soapXml GetXml]);

// Send the SOAP request
NSString *responseXml = [rest FullRequestString: @"POST" uriPath: @"/WeatherWS/Weather.asmx" bodyText: [soapXml GetXml]];
if (rest.LastMethodSuccess != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// When successful, the response status code will equal 200.
if ([rest.ResponseStatusCode intValue] != 200) {
    // Examine the request/response to see what happened.
    NSLog(@"%@%d",@"response status code = ",[rest.ResponseStatusCode intValue]);
    NSLog(@"%@%@",@"response status text = ",rest.ResponseStatusText);
    NSLog(@"%@%@",@"response header: ",rest.ResponseHeader);
    NSLog(@"%@%@",@"response body (if any): ",responseXml);
    NSLog(@"%@",@"---");
    NSLog(@"%@%@",@"LastRequestStartLine: ",rest.LastRequestStartLine);
    NSLog(@"%@%@",@"LastRequestHeader: ",rest.LastRequestHeader);
    return;
}

CkoXml *xml = [[CkoXml alloc] init];
success = [xml LoadXml: responseXml];

// GetXml will emit XML that is nicely indented for human viewing..
NSLog(@"%@",[xml GetXml]);

// A sample response XML is shown below...

// To get some information, use ChilkatPath.  For example...
NSLog(@"%@%@",@"Temperature: ",[xml ChilkatPath: @"soap:Body|GetCityWeatherByZIPResponse|GetCityWeatherByZIPResult|Temperature|*"]);

NSLog(@"%@",@"Success.");

// <?xml version="1.0" encoding="utf-8" ?>
// <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
//     <soap:Body>
//         <GetCityWeatherByZIPResponse xmlns="http://ws.cdyne.com/WeatherWS/">
//             <GetCityWeatherByZIPResult>
//                 <Success>true</Success>
//                 <ResponseText>City Found</ResponseText>
//                 <State>IL</State>
//                 <City>Wheaton</City>
//                 <WeatherStationCity>West Chicago</WeatherStationCity>
//                 <WeatherID>10</WeatherID>
//                 <Description>Mostly Sunny</Description>
//                 <Temperature>33</Temperature>
//                 <RelativeHumidity>39</RelativeHumidity>
//                 <Wind>VRB5</Wind>
//                 <Pressure>30.33F</Pressure>
//                 <Visibility />
//                 <WindChill />
//                 <Remarks />
//             </GetCityWeatherByZIPResult>
//         </GetCityWeatherByZIPResponse>
//     </soap:Body>
// </soap:Envelope>